NUC029
ARM® Cortex® -M0
32-bit Microcontroller
NuMicro® Family
NUC029 Series
Datasheet
Nuvoton is providing this document only for reference purposes of NuMicro microcontroller based
system design. Nuvoton assumes no responsibility for errors or omissions.
All data and specifications are subject to change without notice.
For additional information or questions, please contact: Nuvoton Technology Corporation.
www.nuvoton.com
Dec. 11, 2017
Page 1 of 102
Rev 1.04
NUC029 SERIES DATASHEET
The information described in this document is the exclusive intellectual property of
Nuvoton Technology Corporation and shall not be reproduced without permission from Nuvoton.
NUC029
Table of Contents
LIST OF FIGURES ..................................................................................................... 6
LIST OF TABLES ....................................................................................................... 7
1 GENERAL DESCRIPTION ..................................................................................... 8
2 FEATURES ............................................................................................................ 9
3 ABBREVIATIONS ................................................................................................ 13
4 PARTS INFORMATION LIST AND PIN CONFIGURATION ................................ 14
4.1 NuMicro® NUC029 Series Selection Guide ................................................. 14
4.2 Pin Configuration ................................................................................ 16
4.2.1 NuMicro® NUC029 Pin Diagram ................................................................... 16
4.3 Pin Description .................................................................................. 20
4.3.1 NuMicro® NUC029 Pin Description ............................................................... 20
5 FUNCTIONAL DESCRIPTION ............................................................................. 27
5.1 ARM® Cortex® -M0 Core ....................................................................... 27
5.2 System Manager ................................................................................ 29
5.2.1 Overview .............................................................................................. 29
5.2.2 System Reset ........................................................................................ 29
5.2.3 System Power Distribution ......................................................................... 30
5.2.4 System Memory Map ............................................................................... 31
NUC029 SERIES DATASHEET
5.2.5 Whole System Memory Mapping .................................................................. 34
5.2.6 System Timer (SysTick) ............................................................................ 36
5.2.7 Nested Vectored Interrupt Controller (NVIC) .................................................... 36
5.3 Clock Controller of NuMicro® NUC029xAN .................................................. 41
5.3.1 Overview .............................................................................................. 41
5.3.2 System Clock and SysTick Clock ................................................................. 44
5.3.3 Power-down Mode Clock ........................................................................... 45
5.3.4 Frequency Divider Output .......................................................................... 46
5.4 Clock Controller of NuMicro® NUC029FAE ................................................. 47
5.4.1 Overview .............................................................................................. 47
5.4.2 System Clock and SysTick Clock ................................................................. 48
5.4.3 ISP Clock Source Selection ........................................................................ 49
5.4.4 Module Clock Source Selection ................................................................... 49
5.4.5 Power-down Mode Clock ........................................................................... 50
5.5 Flash Memory Controller (FMC) .............................................................. 51
5.5.1 Overview .............................................................................................. 51
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NUC029
5.5.2 Features .............................................................................................. 51
5.6 External Bus Interface (EBI) (NUC029LAN/NUC029NAN Only) ......................... 52
5.6.1 Overview .............................................................................................. 52
5.6.2 Features .............................................................................................. 52
5.7 General Purpose I/O (GPIO) .................................................................. 53
5.7.1 Overview .............................................................................................. 53
5.7.2 Features .............................................................................................. 53
5.8 Timer Controller (TIMER) ...................................................................... 54
5.8.1 Overview .............................................................................................. 54
5.8.2 Features .............................................................................................. 54
5.9 PWM Generator and Capture Timer (PWM) (NUC029xAN Only)........................ 55
5.9.1 Overview .............................................................................................. 55
5.9.2 Features .............................................................................................. 56
5.10 Enhanced PWM Generator (NUC029FAE Only) ........................................... 57
5.10.1 Overview .............................................................................................. 57
5.10.2 Features .............................................................................................. 57
5.11 Watchdog Timer (WDT) ........................................................................ 59
5.11.1 Overview .............................................................................................. 59
5.11.2 Features .............................................................................................. 59
5.12 Window Watchdog Timer (WWDT) (NUC029xAN Only) .................................. 60
5.12.2 Features .............................................................................................. 60
5.13 UART Interface Controller (UART) ........................................................... 61
5.13.1 Overview .............................................................................................. 61
5.13.2 Features .............................................................................................. 61
5.14 I2C Serial Interface Controller (I2C) ........................................................... 62
5.14.1 Overview .............................................................................................. 62
5.14.2 Features .............................................................................................. 62
5.15 Serial Peripheral Interface (SPI) .............................................................. 63
5.15.1 Overview .............................................................................................. 63
5.15.2 Features .............................................................................................. 63
5.16 Analog-to-Digital Converter (ADC) ........................................................... 64
5.16.1 Overview .............................................................................................. 64
5.16.2 Features .............................................................................................. 64
5.17 Analog Comparator (ACMP)................................................................... 66
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5.12.1 Overview .............................................................................................. 60
NUC029
5.17.1 Overview .............................................................................................. 66
5.17.2 Features .............................................................................................. 66
5.18 Hardware Divider (HDIV) (NUC029xAN Only) .............................................. 67
5.18.1 Overview .............................................................................................. 67
5.18.2 Features .............................................................................................. 67
6 APPLICATION CIRCUIT ...................................................................................... 68
7 NUC029XAN ELECTRICAL CHARACTERISTICS .............................................. 69
7.1 Absolute Maximum Ratings ................................................................... 69
7.2 DC Electrical Characteristics .................................................................. 70
7.3 AC Electrical Characteristics .................................................................. 74
7.3.1 External Input Clock ................................................................................. 74
7.3.2 External 4~24 MHz High Speed Crystal (HXT) .................................................. 74
7.3.3 Internal 22.1184 MHz High Speed RC Oscillator (HIRC) ...................................... 75
7.3.4 Internal 10 kHz Low Speed RC Oscillator (LIRC) ............................................... 75
7.4 Analog Characteristics ......................................................................... 76
7.4.1 12-bit SAR ADC Specification ..................................................................... 76
7.4.2 LDO and Power Management Specification ..................................................... 77
7.4.3 Low Voltage Reset Specification .................................................................. 78
7.4.4 Brown-out Detector Specification ................................................................. 78
7.4.5 Power-on Reset Specification ..................................................................... 78
NUC029 SERIES DATASHEET
7.4.6 Temperature Sensor Specification ................................................................ 80
7.4.7 Comparator Specification........................................................................... 80
7.5 Flash DC Electrical Characteristics ........................................................... 81
8 NUC029FAE ELECTRICAL CHARACTERISTICS .............................................. 82
8.1 Absolute Maximum Ratings ................................................................... 82
8.2 DC Electrical Characteristics .................................................................. 83
8.3 AC Electrical Characteristics .................................................................. 87
8.3.1 External Input Clock ................................................................................. 87
8.3.2 External 4~24 MHz High Speed Crystal (HXT) .................................................. 87
8.3.3 Internal 22.1184 MHz High Speed RC Oscillator (HIRC) ...................................... 88
8.3.4 Internal 10 kHz Low Speed RC Oscillator (LIRC) ............................................... 89
8.4 Analog Characteristics ......................................................................... 90
8.4.1 10-bit SAR ADC Specification ..................................................................... 90
8.4.2 LDO and Power Management Specification ..................................................... 91
8.4.3 Low Voltage Reset Specification .................................................................. 92
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NUC029
8.4.4 Brown-out Detector Specification ................................................................. 92
8.4.5 Power-on Reset Specification ..................................................................... 92
8.4.6 Comparator Specification........................................................................... 94
8.5 Flash DC Electrical Characteristics ........................................................... 95
9 PACKAGE DIMENSIONS .................................................................................... 96
9.1 48-pin LQFP (7x7x1.4 mm) .................................................................... 96
9.2 48-pin QFN (7x7x0.8 mm) ..................................................................... 97
9.3 33-pin QFN (5x5x0.75 mm) .................................................................... 98
9.4 33-pin QFN (4x4x0.75 mm) .................................................................... 99
9.5 20-pin TSSOP (6.5x4.4x1.2 mm) ........................................................... 100
10 REVISION HISTORY .......................................................................................... 101
NUC029 SERIES DATASHEET
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NUC029
LIST OF FIGURES
Figure 4-1 NuMicro® NUC029 Series Selection Code ................................................................... 15
Figure 4-2 NuMicro® NUC029LAN LQFP 48-pin Diagram............................................................. 16
Figure 4-3 NuMicro® NUC029NAN QFN 48-pin Diagram .............................................................. 17
Figure 4-4 NuMicro® NUC029ZAN/NUC029TAN QFN 33-pin Diagram ........................................ 18
Figure 4-5 NuMicro® NUC029FAE TSSOP 20-pin Diagram .......................................................... 19
Figure 5-1 Functional Controller Diagram ...................................................................................... 27
Figure 5-2 NuMicro® NUC029xAN Power Distribution Diagram .................................................... 30
Figure 5-3 NuMicro® NUC029FAE Power Distribution Diagram .................................................... 31
Figure 5-4 NuMicro® NUC029xAN Whole System Memory Mapping ............................................ 34
Figure 5-5 NuMicro® NUC029FAE Whole System Memory Mapping ........................................... 35
Figure 5-6 NuMicro® NUC029xAN Clock Generator Block Diagram ............................................. 41
Figure 5-7 NuMicro® NUC029xAN Clock Source Controller Overview (1/2) ................................. 42
Figure 5-8 NuMicro® NUC029xAN Clock Source Controller Overview (2/2) ................................. 43
Figure 5-9 NuMicro® NUC029xAN System Clock Block Diagram ................................................. 44
Figure 5-10 NuMicro® NUC029xAN SysTick Clock Control Block Diagram .................................. 44
Figure 5-11 NuMicro® NUC029xAN Clock Source of Frequency Divider ...................................... 46
Figure 5-12 NuMicro® NUC029xAN Frequency Divider Block Diagram ........................................ 46
Figure 5-13 NuMicro® NUC029FAE Clock Generator Block Diagram ........................................... 47
Figure 5-14 NuMicro® NUC029FAE System Clock Block Diagram ............................................... 48
Figure 5-15 NuMicro® NUC029FAE SysTick Clock Control Block Diagram .................................. 48
NUC029 SERIES DATASHEET
Figure 5-16 NuMicro® NUC029FAE AHB Clock Source for HCLK ................................................ 49
Figure 5-17 NuMicro® NUC029FAE Peripherals Clock Source Selection for PCLK ..................... 50
Figure 7-1 NUC029xAN Typical Crystal Application Circuit .......................................................... 75
Figure 7-2 NUC029xAN Power-up Ramp Condition ...................................................................... 79
Figure 8-1 NUC029FAE Typical Crystal Application Circuit .......................................................... 88
Figure 8-2 NUC029xAN Power-up Ramp Condition ...................................................................... 93
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NUC029
LIST OF TABLES
Table 1-1 NuMicro® NUC029 Series Difference List ........................................................................ 8
Table 3-1 List of Abbreviations....................................................................................................... 13
Table 4-1 NuMicro® NUC029 Series Selection Guide ................................................................... 14
Table 5-1 NuMicro® NUC029xAN Address Space Assignments for On-Chip Controllers ............. 32
Table 5-2 NuMicro® NUC029FAE Address Space Assignments for On-Chip Controllers ............ 33
Table 5-3 Exception Model ............................................................................................................ 37
Table 5-4 NuMicro® NUC029xAN System Interrupt Map............................................................... 38
Table 5-5 NuMicro® NUC029FAE System Interrupt Map .............................................................. 39
Table 5-6 Vector Table Format ...................................................................................................... 40
Table 5-7 NuMicro® NUC029FAE Peripheral Clock Source Selection Table ................................ 50
NUC029 SERIES DATASHEET
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NUC029
1
GENERAL DESCRIPTION
The NuMicro® NUC029 series 32-bit microcontroller is embedded with ARM® Cortex® -M0 core for
industrial control and applications which need rich communication interfaces or require high
performance, high integration, and low cost. The Cortex® -M0 is the newest ARM® embedded
processor with 32-bit performance at a cost equivalent to the traditional 8-bit microcontroller. The
NuMicro® NUC029 series includes four part numbers: NUC029LAN, NUC029NAN, NUC029ZAN,
NUC029TAN and NUC029FAE.
The NUC029LAN/NUC029NAN/NUC029ZAN/NUC029TAN can run up to 50 MHz and operate at
2.5V ~ 5.5V, -40℃ ~ 85℃, and the NUC029FAE can run up to 24 MHz and operate at 2.5V ~
5.5V, -40℃ ~ 105℃. Therefore, the NUC029 series can afford to support a variety of industrial
control and applications which need high CPU performance.
The NUC029LAN/NUC029NAN/NUC029ZAN/NUC029TAN offers 64K/64K/32K bytes flash, 4
Kbytes Data Flash, 4 Kbytes flash for the ISP, and 4 Kbytes SRAM. The NUC029FAE offers 16
Kbytes flash, size configurable Data Flash (shared with program flash), 2 Kbytes flash for the ISP,
and 2K-bytes SRAM.
Many system level peripheral functions, such as I/O Port, EBI (External Bus Interface), Timer,
UART, SPI, I2C, PWM, ADC, WDT (Watchdog Timer), WWDT (Window Watchdog Timer), Analog
Comparator and Brown-out Detector, have been incorporated into the NUC029 series in order to
reduce component count, board space and system cost. These useful functions make the
NUC029 series powerful for a wide range of applications.
Additionally, the NuMicro® NUC029 series is equipped with ISP (In-System Programming) and
ICP (In-Circuit Programming) functions, and IAP (In-Application Programming), which allow the
user to update the program memory without removing the chip from the actual end product.
NUC029LAN/NUC029NAN/
NUC029ZAN/NUC029TAN
NUC029FAE
Core
Up to 50 MHz
Up to 24 MHz
Operating Temp.
-40℃ ~ +85℃
-40℃ ~ +105℃
Hardware Divider
√
-
Supports PLL as clock source
-
-
Supports external 32.768 kHz crystal
oscillator as clock source
√
-
PWM
PWM Generator and Capture Timer
Enhanced PWM Generator
ADC
12-bit SAR ADC with 760 kSPS (Supports Single,
Burst, Single-Cycle, and Continuous Scan mode)
10-bit SAR ADC with 300 kSPS (Only
supports Single mode)
EBI
√
-
Built-in Temp.Sensor
√
-
Item
NUC029 SERIES DATASHEET
Clock Control
Window WDT
Table 1-1 NuMicro® NUC029 Series Difference List
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NUC029
2
FEATURES
ARM® Cortex® -M0 core
–
–
–
–
–
–
–
Runs up to 50 MHz
One 24-bit system timer
Supports Low Power Sleep mode
A single-cycle 32-bit hardware multiplier
NVIC for the 32 interrupt inputs, each with 4-levels of priority
Supports Serial Wire Debug (SWD) interface and two watchpoints/four breakpoints
Provides hardware divider and supports signed 32-bit dividend, 16-bit divisor
operation(NUC029xAN only)
Operating voltage ranges from 2.5 V to 5.5 V
Memory
– 16/32/64 KB Flash for program memory (APROM)
– Up to 4 KB Flash for loader (LDROM)
– Up to 4 KB SRAM for internal scratch-pad RAM (SRAM)
– 4 KB Flash for data memory (Data Flash) (NUC029xAN only)
– Configurable Data Flash (NUC029FAE only)
Clock Control
–
–
Programmable system clock source
22.1184 MHz internal oscillator
Dynamically calibrating the HIRC OSC to 22.1184 MHz ±3% from -40℃ to 105℃
by external 32.768 kHz crystal oscillator (LXT) (NUC029FAE only)
– 4~24 MHz external crystal input
– 10 kHz low-power oscillator for Watchdog Timer and wake-up in Sleep mode
– PLL allows CPU operation up to the maximum 50 MHz (NUC029xAN only)
– 32.768 kHz external crystal input (LXT) for Power-down wake-up and system operation
clock (NUC029FAE only)
GPIO
Up to 40 general-purpose I/O (GPIO) pins for LQFP/QFN 48-pin package
Four I/O modes:
Quasi-bidirectional
Push-pull output
Open-drain output
Input only with high impendence
– TTL/Schmitt trigger input selectable
– I/O pin can be configured as interrupt source with edge/level setting
– Supports high driver and high sink I/O mode
– Configurable I/O mode after POR
Timer
–
–
–
–
–
–
–
–
Dec. 11, 2017
Up to four sets of 32-bit timers with 24-bit up counter and one 8-bit prescale counter
Independent clock source for each timer
Provides up to four timer counting modes: one-shot, periodic, toggle and continuous
counting
24-bit up counter value is readable through TDR (Timer Data Register)
Supports event counting function to count the input event from external counter pin
24-bit capture value is readable through TCAP (Timer Capture Data Register)
Supports external capture pin for interval measurement
Supports external capture pin to reset 24-bit up counter
Supports chip wake-up from Idle/Power-down mode if a timer interrupt signal is
generated
Supports internal capture triggered while internal ACMP output signal transition
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NUC029 SERIES DATASHEET
–
–
NUC029
(NUC029xAN only)
– Supports Inter-Timer trigger mode (NUC029xAN only)
– Supports internal signal (CPO0, CPO1) for interval measurement (NUC029FAE only)
WDT (Watchdog Timer)
–
–
–
–
Multiple clock sources
Supports wake-up from Power-down or Sleep mode
Interrupt or reset selectable on watchdog time-out
Time-out reset delay period can be selected to 3/18/130/1026 * WDT_CLK
(NUC029xAN only)
WWDT (Window Watchdog Timer) (NUC029xAN only)
– 6-bit down counter with 11-bit pre-scale for wide range window selected
PWM Generator and Capture Timer (NUC029xAN only)
–
Up to four built-in 16-bit PWM generators, providing eight PWM outputs or four
complementary paired PWM outputs
– Individual clock source, clock divider, 8-bit pre-scalar and dead-zone generator for
each PWM generator
– PWM interrupt synchronized to PWM period
– 16-bit digital Capture timers with rising/falling capture inputs
– Supports capture interrupt
– Internal 10 kHz to PWM clock source
– Polar inverse function
– Center-aligned type function
– Timer duty interrupt enable function
– Two kinds of PWM interrupt period type selection
– Two kinds of PWM interrupt duty type selection
– Period/duty trigger ADC function
– PWM Timer synchronous start function
Enhanced PWM Generator (NUC029FAE only)
NUC029 SERIES DATASHEET
– Independent 16-bit PWM duty control units with maximum three outputs
– Supports group/synchronous/independent/ complementary modes
– Supports One-shot or Auto-reload mode
– Supports Edge-aligned and Center-aligned type
– Programmable dead-zone insertion between complementary channels
– Each output has independent polarity setting control
– Hardware fault brake protections
– Supports duty, period, and fault break interrupts
– Supports duty/period trigger ADC conversion
– Timer comparing matching event trigger PWM to do phase change
– Supports comparator event trigger PWM to force PWM output low for current period
– Provides interrupt accumulation function
UART
–
–
–
–
–
–
–
SPI
–
–
Dec. 11, 2017
Up to two sets of UART devices
Programmable baud-rate generator
Buffered receiver and transmitter, each with 16 bytes FIFO
Optional flow control function (CTS and RTS)
Supports IrDA(SIR) function
Supports RS-485 function
Supports LIN function (NUC029xAN only)
Up to two sets of SPI devices
Supports Master/Slave mode
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NUC029
–
–
–
–
–
–
–
–
–
I2C
Full-duplex synchronous serial data transfer
Provides 3 wire function
Variable length of transfer data from 8 to 32 bits
MSB or LSB first data transfer
Rx latching data can be either at rising edge or at falling edge of serial clock
Tx sending data can be either at rising edge or at falling edge of serial clock
Supports Byte Suspend mode in 32-bit transmission
4-level depth FIFO buffer
PLL clock source (NUC029xAN only)
Up to two sets of I2C modules
Supports Master/Slave mode
Bi-directional data transfer between masters and slaves
Multi-master bus (no central master)
Arbitration between simultaneously transmitting masters without corruption of serial
data on the bus
– Serial clock synchronization allows devices with different bit rates to communicate via
one serial bus
– Serial clock synchronization can be used as a handshake mechanism to suspend and
resume serial transfer
– Programmable clocks allow versatile rate control
– Supports 7-bit addressing mode
– Supports multiple address recognition (four slave addresses with mask option)
– Supports Power-down wake-up function
– Supports FIFO function (NUC029FAE only)
ADC
–
–
–
–
–
–
–
–
–
–
Dec. 11, 2017
Up to four sets of Comparator analog modules
External input or internal band-gap voltage selectable at negative node
Interrupt when compared results change
Power-down wake-up
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NUC029 SERIES DATASHEET
12-bit SAR ADC with 760 kSPS for NUC029xAN, and 10-bit SAR ADC with 300 kSPS
for NUC029FAE
– Up to eight single-end analog input channels
Or four differential analog input channels (NUC029xAN only)
– Four operation modes (NUC029FAE only support Single mode)
Single mode: A/D conversion is performed one time on a specified channel
Burst mode: A/D converter samples and converts the specified single channel
and sequentially stores the result in FIFO
Single-cycle Scan mode: A/D conversion is performed only one cycle on all
specified channels with the sequence from the smallest numbered channel to
the largest numbered channel
Continuous Scan mode: A/D converter continuously performs Single-cycle Scan
mode until software stops A/D conversion
– An A/D conversion can be started by:
Software Write 1 to ADST bit
External pin (STADC)
PWM trigger with optional start delay period
– Each conversion result is held in data register with valid and overrun indicators
– Each channel has individual data register (NUC029xAN only)
– Conversion result can be compared with specified value and user can select whether
to generate an interrupt when conversion result matches the compare register setting
– Internal temperature sensor output (NUC029xAN only)
Analog Comparator
NUC029
EBI (External Bus Interface) for external memory-mapped device access (NUC029LAN/
NUC029NAN only)
– Accessible space: 64 KB in 8-bit mode or 128 KB in 16-bit mode
– Supports 8-bit or 16-bit data width
– Supports byte-write in 16-bit data width
ISP (In-System Programming) and ICP (In-Circuit Programming)
IAP (In-Application Programming)
One built-in temperature sensor with 1℃ resolution (NUC029xAN only)
BOD (Brown-out Detector)
– With 4 levels: 4.4V/3.7V/2.7V/2.2V
– Supports Brown-out interrupt and reset option
96-bit unique ID (UID)
LVR (Low Voltage Reset)
– Threshold voltage level: 2.0V
Operating Temperature:
–
–
NUC029LAN/NUC029NAN/NUC029ZAN/NUC029TAN: -40℃~85℃
NUC029FAE:-40℃~105℃
Reliability: EFT > ± 4 KV, ESD HBM pass 4 KV
Packages:
–
–
All Green package (RoHS)
48-pin LQFP, 48-pin QFN, 33-pin QFN, 20-pin TSSOP
NUC029 SERIES DATASHEET
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NUC029
3
ABBREVIATIONS
Description
ACMP
Analog Comparator Controller
ADC
Analog-to-Digital Converter
APB
Advanced Peripheral Bus
AHB
Advanced High-Performance Bus
BOD
Brown-out Detection
EBI
External Bus Interface
FIFO
First In, First Out
FMC
Flash Memory Controller
GPIO
General-Purpose Input/Output
HCLK
The Clock of Advanced High-Performance Bus
HIRC
22.1184 MHz Internal High Speed RC Oscillator
HXT
4~24 MHz External High Speed Crystal Oscillator
IAP
In Application Programming
ICP
In Circuit Programming
ISP
In System Programming
LDO
Low Dropout Regulator
LIN
Local Interconnect Network
LIRC
10 kHz internal low speed RC oscillator (LIRC)
LXT
32.768 kHz External Low Speed Crystal Oscillator
NVIC
Nested Vectored Interrupt Controller
PCLK
The Clock of Advanced Peripheral Bus
PLL
Phase-Locked Loop
PWM
Pulse Width Modulation
SPI
Serial Peripheral Interface
SPS
Samples per Second
TMR
Timer Controller
UART
Universal Asynchronous Receiver/Transmitter
UCID
Unique Customer ID
USB
Universal Serial Bus
WDT
Watchdog Timer
WWDT
Window Watchdog Timer
NUC029 SERIES DATASHEET
Acronym
Table 3-1 List of Abbreviations
Dec. 11, 2017
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NUC029
4
PARTS INFORMATION LIST AND PIN CONFIGURATION
4.1 NuMicro® NUC029 Series Selection Guide
RAM (KB)
Data Flash (KB)
ISP ROM (KB)
I/O
Timer (32-Bit)
UART
SPI
I2C
PWM (16-bit)
ADC (12-bit)
ADC (10-bit)
Comparator
WDT
WWDT
EBI
PLL
32.768 kHz
Crystal Oscillator
ISP/ICP/IAP
Package
Operating
Temperature
Range(℃)
NUC029LAN
64
4
4
4
40
4
2
2
2
8
8
-
4
√
√
√
√
-
√
LQFP48
-40 to +85
NUC029NAN
64
4
4
4
40
4
2
2
2
8
8
-
4
√
√
√
√
-
√
QFN48
-40 to +85
QFN33
(5x5)
QFN33
(4x4)
Part Number
APROM (KB)
Connectivity
NUC029ZAN
64
4
4
4
24
4
2
1
2
5
5
-
3*
√
√
-
√
-
√
NUC029TAN
32
4
4
4
24
4
2
1
2
5
5
-
3*
√
√
-
√
-
√
NUC029FAE
16
2
Config.
2
17
2
1
1
1
3
-
4 2** √
-
-
-
√
√
TSSOP20
-40 to +85
-40 to +85
-40 to +105
Table 4-1 NuMicro® NUC029 Series Selection Guide
Note:
*: ACMP3 only has positive and negative input.
**: ACMP0 only has positive and negative input, and ACMP1 only has positive input.
NUC029 SERIES DATASHEET
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NUC029
NUC 029 X X X
CPU core
ARM Cortex M0
Part Number
Temperature
N: - 40℃ ~ + 85 ℃
E: - 40℃ ~ +105 ℃
Reserved
Package
L: LQFP 48
N: QFN 48
Z: QFN 33 (5x5)
T: QFN 33 (4x4)
F: TSSOP 20
Figure 4-1 NuMicro® NUC029 Series Selection Code
NUC029 SERIES DATASHEET
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NUC029
4.2 Pin Configuration
4.2.1 NuMicro® NUC029 Pin Diagram
4.2.1.1
NuMicro® NUC029LAN LQFP 48 pin
PWM2, P4.2
ACMP0_N, SPISS0,AIN4,P1.4
TXD1,AIN3,P1.3
RXD1,AIN2, P1.2
nWRH, T3,AIN1,P1.1
nWRL, T2,AIN0,P1.0
AVDD
VDD
ACMP3_P, TXD1, CTS1, AD0, P0.0
ACMP3_N, RXD1, RTS1, AD1, P0.1
TXD, CTS0, AD2, P0.2
RXD, RTS0, AD3, P0.3
48
47
46
45
44
43
42
41
40
39
38
37
1
36
P4.1, PWM1, T3EX
ACMP2_N, MISO_0, AIN6, P1.6
2
35
P0.4, AD4, SPISS1
ACMP2_P, SPICLK0, AIN7, P1.7
3
34
P0.5, AD5, MOSI_1
nRST
4
33
P0.6, AD6, MISO_1
ACMP1_N, RXD, P3.0
5
32
P0.7, AD7, SPICLK1
AVSS
6
31
P4.7, ICE_DAT
ACMP1_P, TXD, P3.1
7
30
P4.6, ICE_CLK
T0EX, STADC, nINT0, P3.2
8
29
P4.5, ALE, SDA1
T1EX, MCLK, nINT1, P3.3
9
28
P4.4, nCS, SCL1
SDA0, T0, P3.4
10
27
P2.7, AD15, PWM7
CKO, SCL0, T1, P3.5
11
26
P2.6, AD14, PWM6, ACMP1_O
PWM3, P4.3
12
25
P2.5, AD13, PWM5, SDA1
LQFP-48 pin
18
19
20
21
22
23
24
VSS
LDO_CAP
P2.0, AD8, PWM0
P2.1, AD9, PWM1
P2.2, AD10, PWM2
P2.3, AD11, PWM3
P2.4, AD12, PWM4, SCL1
P4.0, PWM0, T2EX
XTAL2
17
15
P3.7, nRD
XTAL1
14
P3.6, nWR, CKO, ACMP0_O
16
13
NUC029 SERIES DATASHEET
ACMP0_P, MOSI_0, AIN5, P1.5
Figure 4-2 NuMicro® NUC029LAN LQFP 48-pin Diagram
Dec. 11, 2017
Page 16 of 102
Rev 1.04
NUC029
P4.2, PWM2
P1.4, AIN4, SPISS0, ACMP0_N
P1.3, AIN3, TXD1
P1.2, AIN2, RXD1
P1.1, AIN1, T3, nWRH
P1.0, AIN0, T2, nWRL
AVDD
VDD
P0.0, AD0, CTS1, TXD1, ACMP3_P
P0.1, AD1, RTS1, RXD1, ACMP3_N
P0.2, AD2, CTS0, TXD
P0.3, AD3, RTS0, RXD
47
46
45
44
43
42
41
40
39
38
37
NuMicro® NUC029NAN QFN 48 pin
48
4.2.1.2
ACMP0_P, MOSI_0, AIN5, P1.5
1
36
P4.1, PWM1, T3EX
ACMP2_N, MISO_0, AIN6, P1.6
2
35
P0.4, AD4, SPISS1
ACMP2_P, SPICLK0, AIN7, P1.7
3
34
P0.6, AD6, MISO_1
nRST
4
33
P0.7, AD7, SPICLK1
ACMP1_N, RXD, P3.0
5
32
P4.7, ICE_DAT
31
P4.6, ICE_CLK
30
LDO_CAP
AVSS
6
ACMP1_P, TXD, P3.1
7
T0EX, STADC, nINT0, P3.2
8
29
P4.5, ALE, SDA1
T1EX, MCLK, nINT1, P3.3
9
28
P4.4, nCS, SCL1
10
27
P2.7, AD15, PWM7
26
P2.6, AD14, PWM6, ACMP1_O
25
P2.5, AD13, PWM5, SDA1
SDA0, T0, P3.4
QFN48
CKO, SCL0, T1, P3.5 11
49 VSS
22
23
24
PWM3, AD11, P2.3
SCL1, PWM4, AD12, P2.4
T2EX, PWM0, P4.0
21
19
20
18
LDO_CAP
PWM0, AD8, P2.0
PWM1, AD9, P2.1
17
PWM2, AD10, P2.2
16
15
XTAL2
VSS
14
nRD, P3.7
XTAL1
13
NUC029 SERIES DATASHEET
ACMP0_O, CKO, nWR, P3.6
PWM3, P4.3 12
Figure 4-3 NuMicro® NUC029NAN QFN 48-pin Diagram
Dec. 11, 2017
Page 17 of 102
Rev 1.04
NUC029
4.2.1.3
NuMicro® NUC029ZAN/NUC029TAN QFN 33 pin
ACMP3_N, RXD1, RTS1, P0.1
ACMP3_P, TXD1, CTS1, P0.0
VDD
AVDD
AIN0, T2, P1.0
RXD1, AIN2, P1.2
TXD1, AIN3, P1.3
ACMP0_N, AIN4, P1.4
32 31 30 29 28 27 26 25
ACMP0_P, AIN5, P1.5
1
24 P0.4, SPISS1
nRST
2
23 P0.5, MOSI_1
ACMP1_N, RXD, P3.0
3
22 P0.6, MISO_1
AVSS
4
ACMP1_P, TXD, P3.1
5
T0EX, STADC, nINT0, P3.2
6
19 P4.6, ICE_CLK
SDA0, T0, P3.4
7
18 P2.6, PWM6, ACMP1_O
CKO, SCL0, T1, P3.5
8
21 P0.7, SPICLK1
QFN-33 Pin
20 P4.7, ICE_DAT
33 VSS
9
17 P2.5, PWM5, SDA1
10 11 12 13 14 15 16
P2.4, PWM4, SCL1
P2.3, PWM3
P2.2, PWM2
LDO_CAP
VSS
XTAL1
XTAL2
P3.6, CKO, ACMP0_O
NUC029 SERIES DATASHEET
Figure 4-4 NuMicro® NUC029ZAN/NUC029TAN QFN 33-pin Diagram
Dec. 11, 2017
Page 18 of 102
Rev 1.04
NUC029
4.2.1.4
NuMicro® NUC029FAE TSSOP 20 pin
ACMP0_P,RXD,AIN2,P1.2
1
20 VDD
ACMP0_P,TXD,AIN3,P1.3
2
19 P0.4,SPISS0,PWM5
ACMP0_N,AIN4,P1.4
3
18 P0.5,MOSI_0
ACMP0_P,AIN5,P1.5
4
nRST
5
ACMP1_P,T0EX,STADC,nINT0,P3.2
6
ACMP1_P,SDA0,T0,P3.4
7
14 P4.6,ICE_CLK
ACMP1_P,SCL0,T1,P3.5
8
13 P2.5,PWM3
XTAL2,P5.1
9
12 P2.4,PWM2
TSSOP-20
Pin
XTAL1,P5.0 10
17 P0.6,MISO_0
16 P0.7,SPICLK0
15 P4.7,ICE_DAT
11 Vss
Figure 4-5 NuMicro® NUC029FAE TSSOP 20-pin Diagram
NUC029 SERIES DATASHEET
Dec. 11, 2017
Page 19 of 102
Rev 1.04
NUC029
4.3 Pin Description
4.3.1 NuMicro® NUC029 Pin Description
Pin No.
LQFP/QFN
48-pin
QFN
33-pin
1
Pin Name
Pin
Type
Description
P1.5
I/O
General purpose digital I/O pin.
AIN5
AI
ADC5 analog input.
ACMP0_P
AI
Comparator0 positive input pin.
MOSI_0
I/O
SPI0 MISO (Master Out, Slave In) pin.
P1.6
I/O
General purpose digital I/O pin.
AIN6
AI
ADC6 analog input.
MISO_0
I/O
SPI0 MISO (Master In, Slave Out) pin.
ACMP2_N
AI
Comparator2 negative input pin.
P1.7
I/O
General purpose digital I/O pin.
AIN7
AI
ADC7 analog input.
SPICLK0
I/O
SPI0 serial clock pin.
ACMP2_P
AI
Comparator2 positive input pin.
1
－
2
3
4
－
－
2
nRST
P3.0
NUC029 SERIES DATASHEET
5
6
7
8
9
10
3
4
5
I
(ST)
I/O
External reset input: active LOW, with an internal pull-up. Set this pin
low reset chip to initial state.
General purpose digital I/O pin.
[2]
I
ACMP1_N
AI
Comparator1 negative input pin.
AVSS
AP
Ground pin for analog circuit.
P3.1
I/O
General purpose digital I/O pin.
TXD
[2]
O
Data transmitter output pin for UART0.
ACMP1_P
AI
Comparator1 positive input pin
P3.2
I/O
General purpose digital I/O pin.
RXD
Data receiver input pin for UART0.
nINT0
I
External interrupt0 input pin.
STADC
I
ADC external trigger input.
T0EX
I
Timer0 external capture/reset trigger input pin.
P3.3
I/O
6
General purpose digital I/O pin.
nINT1
I
External interrupt1 input pin.
MCLK
O
EBI external clock output pin.
TIEX
I
Timer1 external capture/reset trigger input pin.
P3.4
I/O
－
7
Dec. 11, 2017
General purpose digital I/O pin.
Page 20 of 102
Rev 1.04
NUC029
Pin No.
LQFP/QFN
48-pin
11
QFN
33-pin
Pin Name
I/O
Timer0 external event counter input pin
SDA0
i/O
I2C0 data input/output pin.
P3.5
I/O
General purpose digital I/O pin.
T1
I/O
Timer1 external event counter input pin.
SCL0
I/O
I C0 clock I/O pin.
CKO
O
Frequency divider output pin.
P4.3
I/O
General purpose digital I/O pin.
I/O
PWM3 output/Capture input.
I/O
General purpose digital I/O pin.
8
[2]
P3.6
14
2
－
PWM3
13
Description
T0
[2]
12
Pin
Type
9
CKO
[2]
O
Frequency divider output pin.
－
ACMP0_O
O
Analog comparator0 output pin.
nWR
O
EBI write enable output pin.
P3.7
I/O
General purpose digital I/O pin.
nRD
O
EBI read enable output pin.
O
External 4~24 MHz (high speed) crystal output pin.
－
15
10
XTAL2
16
11
XTAL1
I
(ST)
External 4~24 MHz (high speed) crystal input pin.
12
VSS
P
Ground pin for digital circuit.
LDO_CAP
P
LDO output pin.
NUC029 SERIES DATASHEET
17
33
18
19
13
－
P2.0
I/O
General purpose digital I/O pin.
AD8
I/O
EBI Address/Data bus bit8
I/O
PWM0 output/Capture input.
P2.1
I/O
General purpose digital I/O pin.
AD9
I/O
EBI Address/Data bus bit9
I/O
PWM1 output/Capture input.
I/O
General purpose digital I/O pin.
I/O
PWM2 output/Capture input.
AD10
I/O
EBI Address/Data bus bit10.
P2.3
I/O
General purpose digital I/O pin.
I/O
PWM3 output/Capture input.
PWM0
20
－
PWM1
[2]
[2]
P2.2
14
PWM2
21
－
15
PWM3
22
23
[2]
[2]
－
AD11
I/O
EBI Address/Data bus bit11.
16
P2.4
I/O
General purpose digital I/O pin.
Dec. 11, 2017
Page 21 of 102
Rev 1.04
NUC029
Pin No.
LQFP/QFN
48-pin
QFN
33-pin
Pin Name
PWM4
24
－
17
PWM4 output/Capture input.
I/O
I C1 clock I/O pin.
AD12
I/O
EBI Address/Data bus bit12.
P4.0
I/O
General purpose digital I/O pin.
I/O
PWM0 output/Capture input.
[2]
PWM0
I
P2.5
I/O
General purpose digital I/O pin.
PWM5
I/O
PWM5 output/Capture input.
i/O
I2C1 data input/output pin.
AD13
I/O
EBI Address/Data bus bit13.
P2.6
I/O
General purpose digital I/O pin.
PWM6
I/O
PWM6 output/Capture input.
ACMP1_O
O
Analog comparator1 output pin.
AD14
I/O
EBI Address/Data bus bit14.
P2.7
I/O
General purpose digital I/O pin.
AD15
I/O
EBI Address/Data bus bit15.
PWM7
I/O
PWM7 output/Capture input.
P4.4
I/O
General purpose digital I/O pin.
O
EBI chip select enable output pin.
I/O
I C1 clock I/O pin.
I/O
General purpose digital I/O pin.
O
EBI address latch enable output pin.
i/O
I2C1 data input/output pin.
I/O
General purpose digital I/O pin.
SDA1
18
[2]
2
T2EX
25
－
Description
I/O
SCL1
－
Pin
Type
[2]
Timer2 external capture/reset trigger input pin.
26
－
27
NUC029 SERIES DATASHEET
28
－
－
nCS
SCL1
[2]
P4.5
29
－
ALE
SDA1
[2]
P4.6
30
19
ICE_CLK
31
2
I
Serial Wired Debugger Clock pin.
P4.7
I/O
General purpose digital I/O pin.
ICE_DAT
I/O
Serial Wired Debugger Data pin.
P0.7
I/O
General purpose digital I/O pin.
SPICLK1
I/O
SPI1 serial clock pin.
AD7
I/O
EBI Address/Data bus bit7.
P0.6
I/O
General purpose digital I/O pin.
MISO_1
I/O
SPI1 MISO (Master In, Slave Out) pin.
20
21
32
－
33
22
Dec. 11, 2017
Page 22 of 102
Rev 1.04
NUC029
Pin No.
LQFP/QFN
48-pin
QFN
33-pin
－
Pin Name
Pin
Type
Description
AD6
I/O
EBI Address/Data bus bit6.
P0.5
I/O
General purpose digital I/O pin.
MOSI_1
I/O
SPI1 MISO (Master Out, Slave In) pin.
AD5
I/O
EBI Address/Data bus bit5.
P0.4
I/O
General purpose digital I/O pin.
SPISS1
I/O
SPI1 slave select pin.
AD4
I/O
EBI Address/Data bus bit4.
I/O
General purpose digital I/O pin.
I/O
PWM1 output/Capture input.
23
34
－
24
35
－
P4.1
36
37
－
PWM1
[2]
T3EX
I
P0.3
I/O
General purpose digital I/O pin.
AD3
I/O
EBI Address/Data bus bit3.
O
Request to Send output pin for UART0.
I
Data receiver input pin for UART0.
－
RTS0
RXD
38
Timer3 external capture/reset trigger input pin.
[2]
P0.2
I/O
General purpose digital I/O pin.
AD2
I/O
EBI Address/Data bus bit2.
－
CTS0
Clear to Send input pin for UART0.
TXD
O
Data transmitter output pin for UART0.
P0.1
I/O
General purpose digital I/O pin.
O
Request to Send output pin for UART1.
I
Data receiver input pin for UART1.
[2]
RTS1
NUC029 SERIES DATASHEET
I
25
RXD1
39
[2]
ACMP3_N
AI
Comparator3 negative input pin.
AD1
I/O
EBI Address/Data bus bit1.
P0.0
I/O
General purpose digital I/O pin.
CTS1
I
Clear to Send input pin for UART1.
O
Data transmitter output pin for UART1.
ACMP3_P
AI
Comparator3 positive input pin.
－
AD0
I/O
EBI Address/Data bus bit0.
41
27
VDD
P
42
28
AVDD
AP
Power supply for internal analog circuit.
43
29
P1.0
I/O
General purpose digital I/O pin.
－
26
TXD1
40
Dec. 11, 2017
[2]
Power supply for I/O ports and LDO source for internal PLL and digital
circuit.
Page 23 of 102
Rev 1.04
NUC029
Pin No.
LQFP/QFN
48-pin
QFN
33-pin
Pin Name
Pin
Type
Description
AIN0
AI
ADC0 analog input.
T2
I/O
Timer2 external event counter input pin.
－
nWRL
O
EBI low byte write enable output pin.
－
P1.1
I/O
General purpose digital I/O pin.
AIN1
AI
ADC1 analog input.
T3
I/O
Timer3 external event counter input pin.
nWRH
O
EBI high byte write enable output pin.
P1.2
I/O
General purpose digital I/O pin.
AIN2
AI
ADC2 analog input.
44
45
30
RXD1
[2]
P1.3
46
31
Data receiver input pin for UART1.
I/O
General purpose digital I/O pin.
AI
ADC3 analog input.
O
Data transmitter output pin for UART1.
P1.4
I/O
General purpose digital I/O pin.
AIN4
AI
ADC4 analog input.
ACMP0_N
AI
Comparator0 negative input pin.
SPISS0
I/O
SPI0 slave select pin.
P4.2
I/O
General purpose digital I/O pin.
I/O
PWM2 output/Capture input.
AIN3
TXD1
32
I
[2]
47
－
NUC029 SERIES DATASHEET
48
－
PWM2
[2]
Note1: Pin Type I = Digital Input, O = Digital Output; AI = Analog Input; P = Power Pin; AP = Analog Power; ST = Schmitt trigger
Note2: The PWM0 ~ PWM3, RXD, TXD, RXD1, TXD1, SCL1, SDA1 and CKO can be assigned to different pins. However, a pin
function can only be assigned to a pin at the same time, i.e. software cannot assign RXD to P0.3 and P3.0 at the same time.
Dec. 11, 2017
Page 24 of 102
Rev 1.04
NUC029
Pin No.
TSSOP
20-pin
Pin Name
Pin
Type
Description
P1.2
I/O
General purpose digital I/O pin.
AIN2
AI
ADC2 analog input.
RXD
I
1
Data receiver input pin for UART0.
ACMP0_P
AI
Comparator0 positive input pin.
P1.3
I/O
General purpose digital I/O pin.
AIN3
AI
ADC3 analog input.
TXD
O
Data transmitter output pin for UART0.
ACMP0_P
AI
Comparator0 positive input pin.
P1.4
I/O
General purpose digital I/O pin.
AIN4
AI
ADC4 analog input.
ACMP0_N
AI
Comparator0 negative input pin.
P1.5
I/O
General purpose digital I/O pin.
AIN5
AI
ADC5 analog input.
ACMP0_P
AI
Comparator0 positive input pin.
AVSS
AP
Ground pin for analog circuit.
2
3
4
5
nRST
P3.2
(ST)
I/O
External reset input: active LOW, with an internal pull-up. Set this pin low reset
chip to initial state.
General purpose digital I/O pin.
nINT0
I
External interrupt0 input pin.
STADC
I
ADC external trigger input.
T0EX
I
Timer0 external capture/reset trigger input pin.
ACMP1_P
AI
Comparator1 positive input pin
P3.4
I/O
General purpose digital I/O pin.
T0
I/O
Timer0 external event counter input pin
SDA0
i/O
I2C0 data input/output pin.
ACMP1_P
AI
Comparator1 positive input pin
P3.5
I/O
General purpose digital I/O pin.
T1
I/O
Timer1 external event counter input pin.
SCL0
I/O
I C0 clock I/O pin.
ACMP1_P
AI
Comparator1 positive input pin
P5.1
I/O
General purpose digital I/O pin.
XTAL2
O
External 4~24 MHz (high speed) crystal output pin.
P5.0
I/O
General purpose digital I/O pin.
NUC029 SERIES DATASHEET
6
I
7
8
2
9
10
Dec. 11, 2017
Page 25 of 102
Rev 1.04
NUC029
Pin No.
TSSOP
20-pin
Pin Name
XTAL1
11
Pin
Type
I
(ST)
Description
External 4~24 MHz (high speed) crystal input pin.
VSS
P
Ground pin for digital circuit.
P2.4
I/O
General purpose digital I/O pin.
PWM2
I/O
PWM0 output.
P2.5
I/O
General purpose digital I/O pin.
PWM3
I/O
PWM3 output.
P4.6
I/O
General purpose digital I/O pin.
12
13
14
ICE_CLK
I
Serial Wired Debugger Clock pin.
P4.7
I/O
General purpose digital I/O pin.
ICE_DAT
I/O
Serial Wired Debugger Data pin.
P0.7
I/O
General purpose digital I/O pin.
SPICLK0
I/O
SPI0 serial clock pin.
P0.6
I/O
General purpose digital I/O pin.
MISO_0
I/O
SPI0 MISO (Master In, Slave Out) pin.
P0.5
I/O
General purpose digital I/O pin.
MOSI_0
I/O
SPI0 MISO (Master Out, Slave In) pin.
P0.4
I/O
General purpose digital I/O pin.
SPISS0
I/O
SPI1 slave select pin.
PWM5
I/O
PWM5 output.
15
16
17
18
NUC029 SERIES DATASHEET
19
20
VDD
P
Power supply for I/O ports and LDO source for internal PLL and digital circuit.
Note1: Pin Type I = Digital Input, O = Digital Output; AI = Analog Input; P = Power Pin; AP = Analog Power; ST = Schmitt trigger
Dec. 11, 2017
Page 26 of 102
Rev 1.04
NUC029
5
FUNCTIONAL DESCRIPTION
5.1 ARM® Cortex® -M0 Core
The Cortex® -M0 processor is a configurable, multistage, 32-bit RISC processor, which has an
AMBA AHB-Lite interface and includes an NVIC component. It also has optional hardware debug
functionality. The processor can execute Thumb code and is compatible with other Cortex® -M
profile processor. The profile supports two modes -Thread mode and Handler mode. Handler
mode is entered as a result of an exception. An exception return can only be issued in Handler
mode. Thread mode is entere d on Reset, and can be entered as a result of an exception return.
Figure 5-1 shows the functional controller of processor.
Cortex® -M0 Components
Cortex®-M0 processor
Nested
Vectored
Interrupt
Controller
(NVIC)
Interrupts
Debug
Cortex®-M0
Processor
Core
Wakeup
Interrupt
Controller
(WIC)
Bus Matrix
Breakpoint
and
Watchpoint
Unit
Debugger
Interface
AHB-Lite
Interface
Debug
Access
Port
(DAP)
Serial Wire or
JTAG Debug Port
NUC029 SERIES DATASHEET
Figure 5-1 Functional Controller Diagram
The implemented device provides the following components and features:
Dec. 11, 2017
A low gate count processor:
-
ARMv6-M Thumb® instruction set
-
Thumb-2 technology
-
ARMv6-M compliant 24-bit SysTick timer
-
A 32-bit hardware multiplier
-
System interface supported with little-endian data accesses
-
Ability to have deterministic, fixed-latency, interrupt handling
-
Load/store-multiples and multicycle-multiplies that can be abandoned and
restarted to facilitate rapid interrupt handling
-
C Application Binary Interface compliant exception model. This is the ARMv6-M,
C Application Binary Interface (C-ABI) compliant exception model that enables
the use of pure C functions as interrupt handlers
-
Low Power Sleep mode entry using Wait For Interrupt (WFI), Wait For Event
(WFE) instructions, or the return from interrupt sleep-on-exit feature
NVIC:
Page 27 of 102
Rev 1.04
NUC029
-
32 external interrupt inputs, each with four levels of priority
-
Dedicated Non-maskable Interrupt (NMI) input
-
Supports for both level-sensitive and pulse-sensitive interrupt lines
-
Supports Wake-up Interrupt Controller (WIC) and, providing Ultra-low Power
Sleep mode
Debug support
-
Four hardware breakpoints
-
Two watchpoints
-
Program Counter Sampling Register (PCSR) for non-intrusive code profiling
-
Single step and vector catch capabilities
Bus interfaces:
-
Single 32-bit AMBA-3 AHB-Lite system interface that provides simple integration
to all system peripherals and memory
-
Single 32-bit slave port that supports the DAP (Debug Access Port)
NUC029 SERIES DATASHEET
Dec. 11, 2017
Page 28 of 102
Rev 1.04
NUC029
5.2 System Manager
5.2.1 Overview
System management includes the following sections:
System Resets
System Power Architecture
System Memory Map
System management registers for Part Number ID, chip reset and on-chip controllers
reset , multi-functional pin control
System Timer (SysTick)
Nested Vectored Interrupt Controller (NVIC)
System Control registers
5.2.2 System Reset
The system reset can be issued by one of the following listed events. For these reset event flags
can be read by RSTSRC register.
–
Power-on Reset (POR)
–
Low level on the RESET pin (nRST)
–
Watchdog Time-out Reset (WDT)
–
Low Voltage Reset (LVR)
–
Brown-out Detector Reset (BOD)
Software Reset
–
MCU Reset - SYSRESETREQ(AIRCR[2])
–
Cortex® -M0 Core One-shot Reset - CPU_RST(IPRSTC1[1])
–
Chip One-shot Reset - Chip_RST(IPRSTC1[0])
NUC029 SERIES DATASHEET
Hardware Reset
Note: ISPCON.BS keeps the original value after MCUReset and CPU Reset.
Dec. 11, 2017
Page 29 of 102
Rev 1.04
NUC029
5.2.3 System Power Distribution
In this chip, the power distribution is divided into three segments.
Analog power from AVDD and AVSS provides the power for analog components
operation. AVDD must be equal to VDD to avoid leakage current.
Digital power from VDD and VSS supplies the power to the I/O pins and internal
regulator which provides a fixed 1.8 V power for digital operation.
Build-in a capacitor for internal voltage regulator. (NUC029FAE only)
The output of internal voltage regulator, LDO_CAP, requires an external capacitor which should
be located close to the corresponding pin. Analog power (AVDD) should be the same voltage level
with the digital power (VDD). Figure 5-2 shows the NuMicro® NUC029xAN power distribution and
Figure 5-3 shows the NuMicro® NUC029FAE power distribution.
Analog Comparator
AVDD
12-bit
SAR-ADC
Low
Voltage
Reset
AVSS
Temperature
Sensor
FLASH
Digital Logic
Brown
Out
Detector
Internal
22.1184 MHz and
10 kHz Oscillator
LDO_CAP
1.8V
1uF
POR18
5V to 1.8V
LDO
NUC029 SERIES DATASHEET
PLL
IO cell
GPIO Pins
POR50
VDD VSS
NuMicro® NUC029xAN Power Distribution
Figure 5-2 NuMicro® NUC029xAN Power Distribution Diagram
Dec. 11, 2017
Page 30 of 102
Rev 1.04
NUC029
Analog Comparator
10-bit
SAR-ADC
Low
Voltage
Reset
FLASH
Digital Logic
Brown
Out
Detector
Internal
22.1184 MHz and
10 kHz Oscillator
1.8V
500pF
POR18
5V to 1.8V
LDO
IO cell
GPIO Pins
VDD VSS
NuMicro® NUC029FAE Power Distribution
Figure 5-3 NuMicro® NUC029FAE Power Distribution Diagram
The NuMicro® NUC029 series provides 4G-byte addressing space. The memory locations
assigned to each on-chip controllers are shown in the following table. The detailed register
definition, addressing space, and programming detailed will be described in the following sections
for each on-chip peripheral. The NuMicro® NUC029 series only supports little-endian data format.
Address Space
Token
Controllers
0x0000_0000 – 0x0000_FFFF
FLASH_BA
FLASH Memory Space (64 KB)
0x2000_0000 – 0x2000_0FFF
SRAM_BA
SRAM Memory Space (4 KB)
Flash and SRAM Memory Space
EBI Space (0x6000_0000 ~ 0x6001_FFFF) (NUC029LAN/NUC029NAN Only)
0x6000_0000 – 0x6001_FFFF
EBI_BA
External Memory Space (128 KB )
AHB Controllers Space (0x5000_0000 ~ 0x501F_FFFF)
0x5000_0000 – 0x5000_01FF
Dec. 11, 2017
GCR_BA
System Global Control Registers
Page 31 of 102
Rev 1.04
NUC029 SERIES DATASHEET
5.2.4 System Memory Map
NUC029
0x5000_0200 – 0x5000_02FF
CLK_BA
Clock Control Registers
0x5000_0300 – 0x5000_03FF
INT_BA
Interrupt Multiplexer Control Registers
0x5000_4000 – 0x5000_7FFF
GPIO_BA
GPIO (P0 ~ P4) Control Registers
0x5000_C000 – 0x5000_FFFF
FMC_BA
Flash Memory Control Registers
0x5001_0000 – 0x5001_03FF
EBI_CTL_BA
EBI Control Registers (NUC029LAN/NUC029NAN only)
0x5001_4000 – 0x5001_7FFF
HDIV_BA
Hardware Divider Register (NUC029xAN only)
APB Controllers Space (0x4000_0000 ~ 0x400F_FFFF)
NUC029 SERIES DATASHEET
0x4000_4000 – 0x4000_40FF
WDT_BA
Watchdog Timer Control Registers
0x4000_4100 – 0x4000_7FFF
WWDT_BA
Window Watchdog Timer Control Registers (NUC029xAN only)
0x4001_0000 – 0x4001_3FFF
TMR01_BA
Timer0/Timer1 Control Registers
0x4002_0000 – 0x4002_3FFF
I2C0_BA
I C0 Interface Control Registers
0x4003_0000 – 0x4003_3FFF
SPI0_BA
SPI0 with master/slave function Control Registers
0x4003_4000 – 0x4003_7FFF
SPI1_BA
SPI1 with master/slave function Control Registers
0x4004_0000 – 0x4004_3FFF
PWMA_BA
PWM0/1/2/3 Control Registers
0x4005_0000 – 0x4005_3FFF
UART0_BA
UART0 Control Registers
0x400D_0000 – 0x400D_3FFF
ACMP01_BA
Analog Comparator0/ Analog Comparator1 Control Registers
0x400E_0000 – 0x400E_FFFF
ADC_BA
Analog-Digital-Converter (ADC) Control Registers
0x4011_0000 – 0x4011_3FFF
TMR23_BA
Timer2/Timer3 Control Registers
0x4012_0000 – 0x4012_3FFF
I2C1_BA
I C1 Interface Control Registers (Nuc029xAN only)
0x4014_0000 – 0x4014_3FFF
PWMB_BA
PWM4/5/6/7 Control Registers
0x4015_0000 – 0x4015_3FFF
UART1_BA
UART1 Control Registers
0x401D_0000 – 0x401D_3FFF
ACMP23_BA
Analog Comparator2/ Analog Comparator3 Control Registers
2
2
System Controllers Space (0xE000_E000 ~ 0xE000_EFFF)
0xE000_E010 – 0xE000_E0FF
SYST_BA
System Timer Control Registers
0xE000_E100 – 0xE000_ECFF
NVIC_BA
External Interrupt Controller Control Registers
0xE000_ED00 – 0xE000_ED8F
SCB_BA
System Control Registers
Table 5-1 NuMicro® NUC029xAN Address Space Assignments for On-Chip Controllers
Address Space
Token
Controllers
0x0000_0000 – 0x0000_3FFF
FLASH_BA
FLASH Memory Space (16 KB)
0x2000_0000 – 0x2000_0FFF
SRAM_BA
SRAM Memory Space (2 KB)
Flash and SRAM Memory Space
AHB Controllers Space (0x5000_0000 ~ 0x501F_FFFF)
0x5000_0000 – 0x5000_01FF
GCR_BA
System Global Control Registers
0x5000_0200 – 0x5000_02FF
CLK_BA
Clock Control Registers
Dec. 11, 2017
Page 32 of 102
Rev 1.04
NUC029
0x5000_0300 – 0x5000_03FF
INT_BA
Interrupt Multiplexer Control Registers
0x5000_4000 – 0x5000_7FFF
GP_BA
GPIO (P0 ~ P5) Control Registers
0x5000_C000 – 0x5000_FFFF
FMC_BA
Flash Memory Control Registers
APB Controllers Space (0x4000_0000 ~ 0x401F_FFFF)
0x4000_4000 – 0x4000_7FFF
WDT_BA
Watchdog Timer Control Registers
0x4001_0000 – 0x4001_3FFF
TMR_BA
Timer0/Timer1 Control Registers
0x4002_0000 – 0x4002_3FFF
I2C_BA
I C Interface Control Registers
0x4003_0000 – 0x4003_3FFF
SPI_BA
SPI with master/slave function Control Registers
0x4004_0000 – 0x4004_3FFF
PWMA_BA
PWM Control Registers
0x4005_0000 – 0x4005_3FFF
UART_BA
UART Control Registers
0x400D_0000 – 0x400D_3FFF
ACMP_BA
Analog Comparator Control Registers
0x400E_0000 – 0x400E_3FFF
ADC_BA
Analog-Digital-Converter (ADC) Control Registers
2
System Controllers Space (0xE000_E000 ~ 0xE000_EFFF)
0xE000_E010 – 0xE000_E0FF
SCS_BA
System Timer Control Registers
0xE000_E100 – 0xE000_ECFF
SCS_BA
External Interrupt Controller Control Registers
SCB_BA
System Control Registers
0xE000_ED00 – 0xE000_ED8F
®
Table 5-2 NuMicro NUC029FAE Address Space Assignments for On-Chip Controllers
NUC029 SERIES DATASHEET
Dec. 11, 2017
Page 33 of 102
Rev 1.04
NUC029
5.2.5 Whole System Memory Mapping
0xFFFF_FFFF
4 GB
Reserved
System Control
Reserved
|
System Control
0xE000_F000
System Control Block
0xE000_ED00
SCB_BA
0xE000_EFFF
External Interrupt Controller
0xE000_E100
NVIC_BA
0xE000_E000
System Timer Control
0xE000_E010
SYST_BA
0xE000_DFFF
System Control Space
0xE000_E000
SCS_BA
|
0x6002_0000
0x6001_FFFF
EBI
0x6000_0000
0x5FFF_FFFF
Reserved
|
0x5020_0000
AHB peripherals
0x501F_FFFF
Hardware Divider Control
0x5001_4000
HDIV_BA
0x5000_0000
EBI Control
0x5001_0000
EBI_CTL_BA
0x4FFF_FFFF
FMC
0x5000_C000
FLASH_BA
GPIO Control
0x5000_4000
GPIO_BA
Interrupt Multiplexer Control
0x5000_0300
INT_BA
0x4020_0000
Clock Control
0x5000_0200
CLK_BA
0x401F_FFFF
System Global Control
0x5000_0000
GCR_BA
ACMPB Control
0x401D_0000
ACMP23_BA
UART1 Control
0x4015_0000
UART1_BA
0x2000_1000
PWM4/5/6/7 Control
0x4014_0000
PWMB_BA
0x2000_0FFF
I2C1 Control
0x4012_0000
I2C1_BA
Timer2/Timer3 Control
0x4011_0000
TMR23_BA
ADC Control
0x400E_0000
ADC_BA
ACMPA Control
0x400D_0000
ACMP01_BA
0x2000_0000
UART0 Control
0x4005_0000
UART0_BA
0x1FFF_FFFF
PWM0/1/2/3 Control
0x4004_0000
PWMA_BA
SPI1 Control
0x4003_4000
SPI1_BA
SPI0 Control
0x4003_0000
SPI0_BA
0x0001_0000
I2C Control
0x4002_0000
I2C0_BA
0x0000_FFFF
Timer0/Timer1 Control
0x4001_0000
TMR01_BA
0x0000_7FFF
WDT Control
0x4000_4100
WWDT_BA
0x0000_0000
WWDT Control
0x4000_4000
WDT_BA
AHB
Reserved
APB
|
|
1 GB
0x4000_0000
0x3FFF_FFFF
Reserved
4 KB SRAM
NUC029 SERIES DATASHEET
0.5 GB
Reserved
64 KB on-chip Flash
(NUC029LAN/NUC029NAN)
0 GB
32 KB on-chip Flash
(NUC029ZAN/NUC029TAN)
|
|
|
APB peripherals
Figure 5-4 NuMicro® NUC029xAN Whole System Memory Mapping
Dec. 11, 2017
Page 34 of 102
Rev 1.04
NUC029
System Control
4 GB
0xFFFF_FFFF
Reserved
|
0xE000_F000
System C ontrol
System C ontrol
0xE000_ED00
SC S_BA
External Interrupt C ontrol
0xE000_E100
SC S_BA
System Timer C ontrol
0xE000_E010
SC S_BA
0xE000_EFFF
0xE000_E000
0xE000_E00F
Reserved
|
0x6002_0000
0x6001_FFFF
Reserved
0x6000_0000
0x5FFF_FFFF
Reserved
|
0x5020_0000
AHB
Reserved
AHB peripherals
0x501F_FFFF
FMC
0x5000_C 000
FMC _BA
0x5000_0000
GPIO C ontrol
0x5000_4000
GP_BA
0x4FFF_FFFF
Interrupt Multiplexer C ontrol
0x5000_0300
INT_BA
C lock C ontrol
0x5000_0200
C LK_BA
System Global C ontrol
0x5000_0000
GC R_BA
ADC C ontrol
0x400E_0000
ADC _BA
AC MP C ontrol
0x400D_0000
C MP_BA
UART C ontrol
0x4005_0000
UART_BA
0x2000_0800
PWM C ontrol
0x4004_0000
PWM_BA
0x2000_07FF
SPI C ontrol
0x4003_0000
SPI_BA
0x2000_0000
I2C C ontrol
0x4002_0000
I2C _BA
0x1FFF_FFFF
Timer0/Timer1 C ontrol
0x4001_0000
TMR_BA
WDT C ontrol
0x4000_4000
WDT_BA
|
0x4020_0000
0x401F_FFFF
APB
|
1 GB
0x4000_0000
0x3FFF_FFFF
APB peripherals
Reserved
0.5 GB
|
2 KB SRAM
Reserved
|
NUC029 SERIES DATASHEET
0x0000_4000
0 GB
16 KB on-chip Flash
(NUC 029FAE)
0x0000_3FFF
0x0000_0000
Figure 5-5 NuMicro® NUC029FAE Whole System Memory Mapping
Dec. 11, 2017
Page 35 of 102
Rev 1.04
NUC029
5.2.6 System Timer (SysTick)
The Cortex® -M0 includes an integrated system timer, SysTick, which provides a simple, 24-bit
clear-on-write, decrementing, wrap-on-zero counter with a flexible control mechanism. The
counter can be used as a Real Time Operating System (RTOS) tick timer or as a simple counter.
When system timer is enabled, it will count down from the value in the SysTick Current Value
Register (SYST_CVR) to 0, and reload (wrap) to the value in the SysTick Reload Value Register
(SYST_RVR) on the next clock cycle, then decrement on subsequent clocks. When the counter
transitions to 0, the COUNTFLAG status bit is set. The COUNTFLAG bit clears on reads.
The SYST_CVR value is UNKNOWN on reset. Software should write to the register to clear it to 0
before enabling the feature. This ensures the timer will count from the SYST_RVR value rather
than an arbitrary value when it is enabled.
If the SYST_RVR is 0, the timer will be maintained with a current value of 0 after it is reloaded
with this value. This mechanism can be used to disable the feature independently from the timer
enable bit.
For more detailed information, please refer to the “ARM® Cortex® -M0 Technical Reference
Manual” and “ARM® v6-M Architecture Reference Manual”.
5.2.7 Nested Vectored Interrupt Controller (NVIC)
The Cortex® -M0 provides an interrupt controller as an integral part of the exception mode, named
as “Nested Vectored Interrupt Controller (NVIC)”, which is closely coupled to the processor core
and provides following features:
Nested and Vectored interrupt support
Automatic processor state saving and restoration
Reduced and deterministic interrupt latency
NUC029 SERIES DATASHEET
The NVIC prioritizes and handles all supported exceptions. All exceptions are handled in “Handler
Mode”. This NVIC architecture supports 32 (IRQ[31:0]) discrete interrupts with 4 levels of priority.
All of the interrupts and most of the system exceptions can be configured to different priority
levels. When an interrupt occurs, the NVIC will compare the priority of the new interrupt to the
current running one’s priority. If the priority of the new interrupt is higher than the current one, the
new interrupt handler will override the current handler.
When an interrupt is accepted, the starting address of the interrupt service routine (ISR) is fetched
from a vector table in memory. There is no need to determine which interrupt is accepted and
branch to the starting address of the correlated ISR by software. While the starting address is
fetched, NVIC will also automatically save processor state including the registers “PC, PSR, LR,
R0~R3, R12” to the stack. At the end of the ISR, the NVIC will restore the mentioned registers
from stack and resume the normal execution. Thus it will take less and deterministic time to
process the interrupt request.
The NVIC supports “Tail Chaining” which handles back-to-back interrupts efficiently without the
overhead of states saving and restoration and therefore reduces delay time in switching to
pending ISR at the end of current ISR. The NVIC also supports “Late Arrival” which improves the
efficiency of concurrent ISRs. When a higher priority interrupt request occurs before the current
ISR starts to execute (at the stage of state saving and starting address fetching), the NVIC will
give priority to the higher one without delay penalty. Thus it advances the real-time capability.
For more detailed information, please refer to the “ARM® Cortex® -M0 Technical Reference
Manual” and “ARM® v6-M Architecture Reference Manual”.
Dec. 11, 2017
Page 36 of 102
Rev 1.04
NUC029
5.2.7.1
Exception Model and System Interrupt Map
The following table lists the exception model supported by NuMicro® NUC029 series. Software
can set four levels of priority on some of these exceptions as well as on all interrupts. The highest
user-configurable priority is denoted as “0” and the lowest priority is denoted as “3”. The default
priority of all the user-configurable interrupts is “0”. Note that priority “0” is treated as the fourth
priority on the system, after three system exceptions “Reset”, “NMI” and “Hard Fault”.
Exception Name
Vector Number
Priority
Reset
1
-3
NMI
2
-2
Hard Fault
3
-1
Reserved
4 ~ 10
Reserved
SVCall
11
Configurable
Reserved
12 ~ 13
Reserved
PendSV
14
Configurable
SysTick
15
Configurable
Interrupt (IRQ0 ~ IRQ31)
16 ~ 47
Configurable
Table 5-3 Exception Model
NUC029 SERIES DATASHEET
Dec. 11, 2017
Page 37 of 102
Rev 1.04
NUC029
Vector
Number
Interrupt Number
(Bit In Interrupt
Registers)
Interrupt
Name
Source
Module
1 ~ 15
-
-
-
16
0
BOD_INT
Brown-out
17
1
WDT_INT
18
2
19
Interrupt Description
System exceptions
Power-Down
Wake-Up
-
NUC029 SERIES DATASHEET
Brown-out low voltage detected interrupt
Yes
WDT
Watchdog Timer interrupt
Yes
EINT0
GPIO
External signal interrupt from P3.2 pin
Yes
3
EINT1
GPIO
External signal interrupt from P3.3 pin
Yes
20
4
P0/1_INT
GPIO
External signal interrupt from P0[7:0]/P1[7:0]
Yes
21
5
P2/3/4_INT
GPIO
External signal interrupt from
P2[7:0]/P3[7:0]/P4[7:0], except P3.2 and P3.3
Yes
22
6
PWMA_INT
PWM0~3
PWM0, PWM1, PWM2 and PWM3 interrupt
No
23
7
PWMB_INT
PWM4~7
PWM4, PWM5, PWM6 and PWM7 interrupt
No
24
8
TMR0_INT
TMR0
Timer0 interrupt
Yes
25
9
TMR1_INT
TMR1
Timer1 interrupt
Yes
26
10
TMR2_INT
TMR2
Timer2interrupt
Yes
27
11
TMR3_INT
TMR3
Timer3 interrupt
Yes
28
12
UART0_INT
UART0
UART0 interrupt
Yes
29
13
UART1_INT
UART1
UART1 interrupt
Yes
30
14
SPI0_INT
SPI0
SPI0 interrupt
No
31
15
SPI1_INT
SPI1
SPI1 interrupt
No
32 ~ 33
16 ~ 17
-
-
34
18
I2C0_INT
I C0
2
2
Reserved
-
2
Yes
2
Yes
I C0 interrupt
35
19
I2C1_INT
I C1
I C1 interrupt
36 ~ 40
20 ~ 24
-
-
41
25
ACMP01_INT
ACMP0/1
Analog Comparator0 or Comparator1 interrupt
Yes
42
26
ACMP23_INT
ACMP2/3
Analog Comparator2 or Comparator3 interrupt
Yes
43
27
-
-
44
28
PWRWU_INT
CLKC
Clock controller interrupt for chip wake-up from
Power-down state
Yes
45
29
ADC_INT
ADC
ADC interrupt
No
46 ~ 47
30 ~ 31
-
-
Reserved
Reserved
Reserved
-
-
-
Table 5-4 NuMicro® NUC029xAN System Interrupt Map
Dec. 11, 2017
Page 38 of 102
Rev 1.04
NUC029
Vector
Number
Interrupt Number
(Bit In Interrupt
Registers)
Interrupt
Name
Source
Module
1 ~ 15
-
-
-
16
0
BOD_INT
Brown-out
17
1
WDT_INT
18
2
19
Interrupt Description
System exceptions
Power-Down
Wake-Up
-
Brown-out low voltage detected interrupt
Yes
WDT
Watchdog Timer interrupt
Yes
EINT0
GPIO
External signal interrupt from P3.2 pin
Yes
3
-
-
20
4
P0/1_INT
GPIO
External signal interrupt from P0[7:0]/P1[7:0]
Yes
21
5
P2/3/4_INT
GPIO
External signal interrupt from
P2[7:0]/P3[7:0]/P4[7:0], except P3.2
Yes
22
6
PWM_INT
PWM
PWM interrupt
No
23
7
BRAKE_INT
PWM
PWM interrupt
No
24
8
TMR0_INT
TMR0
Timer0 interrupt
Yes
25
9
TMR1_INT
TMR1
Timer1 interrupt
Yes
26 ~ 27
10 ~ 11
-
-
28
12
UART_INT
UART
29
13
-
-
30
14
SPI_INT
SPI
31
15
-
-
32
16
GP5_INT
GPIO
External signal interrupt from P5
Yes
33
17
HIRC
HIRC trim interrupt
NO
34
18
I2C_INT
IC
35 ~ 40
19 ~ 24
-
-
41
25
ACMP_INT
ACMP
42 ~ 43
26 ~ 27
-
-
44
28
PWRWU_INT
CLKC
Clock controller interrupt for chip wake-up from
Power-down state
Yes
45
29
ADC_INT
ADC
ADC interrupt
No
46 ~ 47
30 ~ 31
-
HIRC_TRIM_
2
-
Reserved
UART interrupt
Reserved
SPI interrupt
Reserved
2
I C interrupt
Reserved
Analog Comparator interrupt
Reserved
Reserved
-
Yes
No
-
Yes
Yes
-
-
®
Table 5-5 NuMicro NUC029FAE System Interrupt Map
Dec. 11, 2017
Page 39 of 102
Rev 1.04
NUC029 SERIES DATASHEET
INT
Reserved
NUC029
5.2.7.2
Vector Table
When an interrupt is accepted, the processor will automatically fetch the starting address of the
interrupt service routine (ISR) from a vector table in memory. For ARMv6-M, the vector table base
address is fixed at 0x00000000. The vector table contains the initialization value for the stack
pointer on reset, and the entry point addresses for all exception handlers. The vector number on
previous page defines the order of entries in the vector table associated with exception handler
entry as illustrated in previous section.
Vector Table Word Offset
0
Vector Number
Description
SP_main – The Main stack pointer
Exception Entry Pointer using that Vector Number
Table 5-6 Vector Table Format
5.2.7.3
Operation Description
NVIC interrupts can be enabled and disabled by writing to their corresponding Interrupt SetEnable or Interrupt Clear-Enable register bit-field. The registers use a write-1-to-enable and write1-to-clear policy, both registers reading back the current enabled state of the corresponding
interrupts. When an interrupt is disabled, interrupt assertion will cause the interrupt to become
Pending, however, the interrupt will not activate. If an interrupt is Active when it is disabled, it
remains in its Active state until cleared by reset or an exception return. Clearing the enable bit
prevents new activations of the associated interrupt.
NVIC interrupts can be pended/un-pended using a complementary pair of registers to those used
to enable/disable the interrupts, named the Set-Pending Register and Clear-Pending Register
respectively. The registers use a write-1-to-enable and write-1-to-clear policy, both registers
reading back the current pended state of the corresponding interrupts. The Clear-Pending
Register has no effect on the execution status of an Active interrupt.
NUC029 SERIES DATASHEET
NVIC interrupts are prioritized by updating an 8-bit field within a 32-bit register (each register
supporting four interrupts).
The general registers associated with the NVIC are all accessible from a block of memory in the
System Control Space and will be described in next section.
Dec. 11, 2017
Page 40 of 102
Rev 1.04
NUC029
5.3 Clock Controller of NuMicro® NUC029xAN
5.3.1 Overview
The clock controller generates the clocks for the whole chip, including system clocks and all
peripheral clocks. The clock controller also implements the power control function with the
individually clock ON/OFF control, clock source selection and clock divider. The chip enters
Power-down mode when Cortex® -M0 core executes the WFI instruction only if the
PWR_DOWN_EN (PWRCON[7]) bit and PD_WAIT_CPU (PWRCON[8]) bit are both set to 1.
After that, chip enters Power-down mode and wait for wake-up interrupt source triggered to leave
Power-down mode. In the Power-down mode, the clock controller turns off the 4~24 MHz external
high speed crystal oscillator (HXT) and 22.1184 MHz internal high speed RC oscillator (HIRC)to
reduce the overall system power consumption. The following figures show the clock generator
and the overview of the clock source control.
The clock generator consists of 4 clock sources as listed below:
4~24 MHz external high speed crystal oscillator (HXT)
Programmable PLL output clock frequency (PLL source can be selected from external
4~24 MHz external high speed crystal oscillator (HXT) or 22.1184 MHz internal high
speed RC oscillator (HIRC)) (PLL FOUT)
22.1184 MHz internal high speed RC oscillator (HIRC)
10 kHz internal low speed RC oscillator (LIRC)
XTL12M_EN (PWRCON[0])
HXT
XTAL1
PLL_SRC (PLLCON[19])
4~24 MHz HXT
0
OSC22M_EN (PWRCON[2])
PLL
PLL FOUT
1
22.1184 MHz
HIRC
HIRC
OSC10K_EN(PWRCON[3])
LIRC
10 kHz
LIRC
Legend:
HXT = 4~24 MHz external high speed crystal oscillator
HIRC = 22.1184 MHz internal high speed RC oscillator
LIRC = 10 kHz internal low speed RC oscillator
Note: Before clock switching, both the pre-selected and newly selected clock sources must be
turned on and stable.
Figure 5-6 NuMicro® NUC029xAN Clock Generator Block Diagram
Dec. 11, 2017
Page 41 of 102
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NUC029 SERIES DATASHEET
XTAL2
NUC029
HIRC
111
LIRC
CPUCLK
CPU
011
PLL FOUT
010
Reserved
HDIV
1/(HCLK_N+1)
HCLK
EBI
ACMP0
ACMP1
ACMP2
ACMP3
001
HXT
PCLK
000
CLKSEL0[2:0]
I2C0
I2C1
HIRC
FMC
HCLK
1
PLL FOUT
SPI0
SPI1
0
CLKSEL1[4:5]
HIRC
11
HCLK
10
PLL FOUT
1/(ADC_N+1)
ADC
1/(UART_N+1)
UART 0-2
01
HXT
00
CLKSEL1[3:2]
NUC029 SERIES DATASHEET
HIRC
11
PLL FOUT
HXT
01
00
CLKSEL1[25:24]
LIRC
BOD
Legend:
HXT = 4~24 MHz external high speed crystal oscillator
HIRC = 22.1184 MHz internal high speed RC oscillator
LIRC = 10 kHz internal low speed RC oscillator
Note: Before clock switching, both the pre-selected and newly selected clock sources must be
turned on and stable.
Figure 5-7 NuMicro® NUC029xAN Clock Source Controller Overview (1/2)
Dec. 11, 2017
Page 42 of 102
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NUC029
HIRC
111
LIRC
101
T0~T3
011
HCLK
010
HXT
TMR 0
TMR 1
TMR 2
TMR 3
000
CLKSEL1[22:20]
CLKSEL1[18:16]
CLKSEL1[14:12]
CLKSEL1[10:8]
HIRC
1/2
111
HCLK
1/2
011
HXT
1/2
010
CPUCLK
1
SysTick
Reserved
001
HXT
000
0
SYST_CSR[2]
CLKSEL0[5:3]
HIRC
11
HCLK
10
Reserved
01
HXT
00
FDIV
PWM 6-7
PWM 4-5
PWM 2-3
PWM 0-1
LIRC
HCLK/2048
LIRC
HCLK
1/2048
Reserved
11
WWDT
10
CLKSEL2[17:16]
11
10
WDT
01
CLKSEL1[1:0]
Legend:
HXT = 4~24 MHz external high speed crystal oscillator
HIRC = 22.1184 MHz internal high speed RC oscillator
LIRC = 10 kHz internal low speed RC oscillator
Note: Before clock switching, both the pre-selected and newly selected clock sources must be
turned on and stable.
Figure 5-8 NuMicro® NUC029xAN Clock Source Controller Overview (2/2)
Dec. 11, 2017
Page 43 of 102
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NUC029 SERIES DATASHEET
CLKSEL2[7:2]
CLKSEL1[31:28]
NUC029
5.3.2 System Clock and SysTick Clock
The system clock has 4 clock sources which were generated from clock generator block. The
clock source switch depends on the register HCLK_S (CLKSEL0[2:0]). The block diagram is
shown in Figure 5-9.
HCLK_S (CLKSEL0[2:0])
22.1184 MHz
HIRC
111
10 kHz LIRC
011
PLL FOUT
CPUCLK
010
1/(HCLK_N+1)
Reserved
001
4~24 MHz HXT
HCLK_N (CLKDIV[3:0])
HCLK
PCLK
CPU
AHB
APB
000
CPU in Power Down Mode
Legend:
HXT = 4~24 MHz external high speed crystal oscillator
HIRC = 22.1184 MHz internal high speed RC oscillator
LIRC = 10 kHz internal low speed RC oscillator
Note: Before clock switching, both the pre-selected and newly selected clock sources must be
turned on and stable.
Figure 5-9 NuMicro® NUC029xAN System Clock Block Diagram
NUC029 SERIES DATASHEET
The clock source of SysTick in Cortex® -M0 core can use CPU clock or external clock
(SYST_CSR[2]). If using external clock, the SysTick clock (STCLK) has 4 clock sources. The
clock source switch depends on the setting of the register STCLK_S (CLKSEL0[5:3]). The block
diagram is shown in Figure 5-10.
STCLK_S (CLKSEL0[5:3])
22.1184 MHz
HCLK
4~24 MHz
32.768 kHz
4~24 MHz
1/2
111
1/2
011
1/2
010
STCLK
001
000
Note: Before clock switching, both the pre-selected and newly selected clock sources must be
turned on and stable.
Figure 5-10 NuMicro® NUC029xAN SysTick Clock Control Block Diagram
Dec. 11, 2017
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NUC029
5.3.3 Power-down Mode Clock
When chip enters Power-down mode, system clocks, some clock sources, and some peripheral
clocks will be disabled. Some clock sources and peripherals clocks are still active in Power-down
mode.
The clocks still kept active are listed below:
Clock Generator
-
10 kHz internal low speed RC oscillator clock (LIRC)
Peripherals Clock (when 10 kHz intertnal low speed RC oscillator is adopted as clock
source)
NUC029 SERIES DATASHEET
Dec. 11, 2017
Page 45 of 102
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NUC029
5.3.4 Frequency Divider Output
This device is equipped with a power-of-2 frequency divider which is composed by16 chained
divide-by-2 shift registers. One of the 16 shift register outputs selected by a sixteen to one
multiplexer is reflected to CKO pin. Therefore there are 16 options of power-of-2 divided clocks
with the frequency from Fin/21 to Fin/216 where Fin is input clock frequency to the clock divider.
The output formula is Fout = Fin/2(N+1), where Fin is the input clock frequency, Fout is the clock
divider output frequency and N is the 4-bit value in FSEL (FRQDIV[3:0]).
When writing 1 to DIVIDER_EN (FRQDIV[4]), the chained counter starts to count. When writing 0
to DIVIDER_EN (FRQDIV[4]), the chained counter continuously runs till divided clock reaches low
state and stay in low state.
FRQDIV_S (CLKSEL2[3:2])
22.1184 MHz
HIRC
HCLK
FDIV_EN (APBCLK[6])
11
FRQDIV_CLK
10
10 kHz LIRC
4~24 MHz HXT
01
Legend:
HXT = 4~24 MHz external high speed crystal oscillator
HIRC = 22.1184 MHz internal high speed RC oscillator
LIRC = 10 kHz internal low speed RC oscillator
00
Note: Before clock switching, both the pre-selected and newly selected clock sources must be
turned on and stable.
NUC029 SERIES DATASHEET
Figure 5-11 NuMicro® NUC029xAN Clock Source of Frequency Divider
DIVIDER_EN
(FRQDIV[4])
Enable
divide-by-2 counter
FRQDIV_CLK
1/2
1/22
FSEL
(FRQDIV[3:0])
16 chained
divide-by-2 counter
1/23
…...
1/215
1/216
0000
0001
:
:
1110
1111
16 to 1
MUX
CKO
Figure 5-12 NuMicro® NUC029xAN Frequency Divider Block Diagram
Dec. 11, 2017
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NUC029
5.4 Clock Controller of NuMicro® NUC029FAE
5.4.1 Overview
The clock controller generates the clocks for the whole chip, including system clocks and all
peripheral clocks. The clock controller also implements the power control function with the
individually clock ON/OFF control, clock source selection and clock divider. The chip enters
Power-down mode when Cortex® -M0 core executes the WFI instruction only if the
PWR_DOWN_EN (PWRCON[7]) bit and PD_WAIT_CPU (PWRCON[8]) bit are both set to 1.
After that, chip enters Power-down mode and wait for wake-up interrupt source triggered to leave
Power-down mode. In the Power-down mode, the clock controller turns off the 4~24 MHz external
high speed crystal oscillator (HXT) and 22.1184 MHz internal high speed RC oscillator (HIRC)to
reduce the overall system power consumption. The following figures show the clock generator
and the overview of the clock source control.
The clock generator consists of 3 clock sources as listed below:
4~24 MHz external high speed crystal oscillator (HXT) or 32.768 kHz external low
speed crystal oscillator (LXT)
22.1184 MHz internal high speed RC oscillator (HIRC)
10 kHz internal low speed RC oscillator (LIRC)
XTLCLK_EN (PWRCON[1:0])
XTAL1
XTAL2
HXT or LXT
4~24 MHz HXT
or
32.768 kHz LXT
HIRC
22.1184 MHz
HIRC
OSC10K_EN(PWRCON[3])
LIRC
10 kHz
LIRC
Legend:
HXT = 4~24 MHz external high speed crystal oscillator
LXT = 32.768 kHz external low speed crystal oscillator
HIRC = 22.1184 MHz internal high speed RC oscillator
LIRC = 10 kHz internal low speed RC oscillator
Note: Before clock switching, both the pre-selected and newly selected clock sources must be
turned on and stable.
Figure 5-13 NuMicro® NUC029FAE Clock Generator Block Diagram
Dec. 11, 2017
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NUC029 SERIES DATASHEET
OSC22M_EN (PWRCON[2])
NUC029
5.4.2 System Clock and SysTick Clock
The system clock has 3 clock sources which were generated from clock generator block. The
clock source switch depends on the register HCLK_S (CLKSEL0[2:0]). The block diagram is
shown in Figure 5-14.
HCLK_S (CLKSEL0[2:0])
22.1184 MHz
HIRC
111
10 kHz LIRC
011
Reserved
CPUCLK
010
Reserved
4~24 MHz HXT or
32.768 kHz LXT
1/(HCLK_N+1)
001
HCLK_N (CLKDIV[3:0])
HCLK
PCLK
CPU
AHB
APB
000
CPU in Power Down Mode
Legend:
HXT = 4~24 MHz external high speed crystal oscillator
HIRC = 22.1184 MHz internal high speed RC oscillator
LIRC = 10 kHz internal low speed RC oscillator
Note: Before clock switching, both the pre-selected and newly selected clock sources must be
turned on and stable.
Figure 5-14 NuMicro® NUC029FAE System Clock Block Diagram
NUC029 SERIES DATASHEET
The clock source of SysTick in Cortex® -M0 core can use CPU clock or external clock
(SYST_CSR[2]). If using external clock, the SysTick clock (STCLK) has 4 clock sources. The
clock source switch depends on the setting of the register STCLK_S (CLKSEL0[5:3]). The block
diagram is shown in Figure 5-15.
STCLK_S (CLKSEL0[5:3])
22.1184 MHz
HCLK
4~24 MHz
32.768 kHz
4~24 MHz
1/2
111
1/2
011
1/2
010
STCLK
001
000
Note: Before clock switching, both the pre-selected and newly selected clock sources must be
turned on and stable.
Figure 5-15 NuMicro® NUC029FAE SysTick Clock Control Block Diagram
Dec. 11, 2017
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NUC029
5.4.3 ISP Clock Source Selection
The clock source of ISP is from AHB clock (HCLK). Please refer to the register AHBCLK.
HCLK
ISP (In System
Programmer)
ISP_EN (AHBCLK[2])
Figure 5-16 NuMicro® NUC029FAE AHB Clock Source for HCLK
5.4.4 Module Clock Source Selection
The peripheral clock has different clock source switch settings depending on different peripherals.
PCLK
Watch Dog Timer
WDT_EN (APBCLK[0])
Timer0
TMR0_EN (APBCLK[2])
Timer1
TMR1_EN (APBCLK[3])
Frequency Divider
FDIV_EN (APBCLK[6])
SPI
SPI_EN (APBCLK[12])
Dec. 11, 2017
NUC029 SERIES DATASHEET
I2C
I2C_EN (APBCLK[8])
UART_EN (APBCLK[16])
UART
PWM01_EN (APBCLK[20])
PWM01
PWM23_EN (APBCLK[21])
PWM23
PWM45_EN (APBCLK[22])
PWM45
ADC_EN (APBCLK[28])
ADC
CMP_EN (APBCLK[30])
ACMP
Page 49 of 102
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NUC029
Figure 5-17 NuMicro® NUC029FAE Peripherals Clock Source Selection for PCLK
Ext. CLK (HXT Or
LXT)
HIRC
LIRC
PCLK
WDT
Yes
No
Yes
Yes
Timer0
Yes
Yes
Yes
Yes
Timer1
Yes
Yes
Yes
Yes
IC
No
No
No
Yes
SPI
No
No
No
Yes
UART
Yes
Yes
No
No
PWM
No
No
No
Yes
ADC
Yes
Yes
No
Yes
ACMP
No
No
No
Yes
2
Table 5-7 NuMicro® NUC029FAE Peripheral Clock Source Selection Table
5.4.5 Power-down Mode Clock
When chip enters Power-down mode, system clocks, some clock sources, and some peripheral
clocks will be disabled. Some clock sources and peripherals clocks are still active in Power-down
mode.
The clocks still kept active are listed below:
Clock Generator
-
10 kHz internal low speed RC oscillator clock (LIRC)
NUC029 SERIES DATASHEET
32.768 kHz external low speed crystal oscillator (LXT) clock (If PD_32K = 1 and
XTLCLK_EN[1:0] = 10)
Peripherals Clock (When 10 kHz low speed oscillator is adopted as clock source)
Dec. 11, 2017
-
Watchdog Clock
-
Timer 0/1 Clock
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NUC029
5.5 Flash Memory Controller (FMC)
5.5.1 Overview
The NuMicro® NUC029 series has 64/32/16K bytes on-chip embedded Flash for application
program memory (APROM) that can be updated through ISP procedure. The In-SystemProgramming (ISP) function enables user to update program memory when chip is soldered on
PCB. After chip is powered on, Cortex® -M0 CPU fetches code from APROM or LDROM decided
by boot select (CBS) in CONFIG0.
The NuMicro® NUC029 series also provides additional Data Flash for user to store some
application dependent data before chip power off. The NUC029xAN provides additional 4 Kbytes
DATA Flash, and NUC029FAE provides Data Flash that is shared with APROM and its start
address is configurable and defined by user in CONFIG1.
5.5.2
Features
Runs up to 50 MHz with zero wait cycle for continuous address read access
64/32/16 KB application program memory (APROM)
Up to 4KB In-System-Programming (ISP) loader program memory (LDROM)
Fixed 4KB Data Flash for NUC029xAN
Configurable Data Flash size and Programmable Data Flash start address for
NUC029FAE
All embedded flash memory supports 512 bytes page erase
Supports In-Application-Programming (IAP) to switch code between APROM and
LDROM without reset
In-System-Programming (ISP) to update on-chip Flash
NUC029 SERIES DATASHEET
Dec. 11, 2017
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NUC029
5.6 External Bus Interface (EBI) (NUC029LAN/NUC029NAN Only)
5.6.1 Overview
The NuMicro® NUC029LAN/NUC029NAN has an external bus interface (EBI) to access external
device. To save the connections between external device and this chip, EBI support address bus
and data bus multiplex mode. Also, address latch enable (ALE) signal is used to differentiate the
address and data cycle.
5.6.2 Features
Supports external devices with maximum 64 KB size (8-bit data width) / 128 KB (16bit data width)
Supports variable external bus base clock (MCLK) which based on HCLK
Supports 8-bit or 16-bit data width
Supports variable data access time (tACC), address latch enable time (tALE) and
address hold time (tAHD)
Supports address bus and data bus multiplex mode to save the address pins
Supports configurable idle cycle for different access condition: Write command finish
(W2X), Read-to-Read (R2R)
Supports zero address hold time with read/write operation and write buffer for write
operation to enhance read/write performance
NUC029 SERIES DATASHEET
Dec. 11, 2017
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NUC029
5.7 General Purpose I/O (GPIO)
5.7.1 Overview
The NuMicro® NUC029 series has up to 40 General Purpose I/O pins to be shared with other
function pins depending on the chip configuration. These 40 pins are arranged in 6 ports named
as P0, P1, P2, P3, P4 and P5. Each port has the maximum of 8 pins. Each of the 40 pins is
independent and has the corresponding register bits to control the pin mode function and data.
The I/O type of each of I/O pins can be configured by software individually as Input, Push-pull
output, Open-drain output or Quasi-bidirectional mode. Each I/O pin has a very weak individual
pull-up resistor which is about 110~300 K for VDD is from 5.0 V to 2.5 V.
5.7.2 Features
Four I/O modes:
-
Quasi-bidirectional
-
Push-Pull output
-
Open-Drain output
-
Input only with high impendence
TTL/Schmitt trigger input selectable by Px_TYPE[15:0] in Px_MFP[23:16]
I/O pin configured as interrupt source with edge/level setting
Configurable default I/O mode of all pins after reset by CIOINI(CONFIG[10]) setting
-
For NUC029xAN:
If CIOINI is 0, all GPIO pins in input tri-state mode after chip reset
If CIOINI is 1, all GPIO pins in Quasi-bidirectional mode after chip reset
(Default)
-
For NUC029FAE:
If CIOINI is 0, all GPIO pins in Quasi-bidirectional mode after chip reset
If CIOINI is 1, all GPIO pins in input tri-state mode after chip reset (Default)
I/O pin internal pull-up resistor enabled only in Quasi-bidirectional I/O mode
Enabling the pin interrupt function will also enable the pin wake-up function.
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After reset, the I/O mode of all pins are stay in Quasi-bidirectional mode and
each port data register Px_DOUT[7:0] resets to 0x000_00FF.
NUC029
5.8 Timer Controller (TIMER)
5.8.1 Overview
The timer controller includes up to 4 sets 32-bit timers, TIMER0 ~ TIMER3, allowing user to easily
implement a timer control for applications. The timer can perform functions, such as frequency
measurement, delay timing, clock generation, and event counting by external input pins, and
interval measurement by external capture pins.
5.8.2 Features
NUC029 SERIES DATASHEET
Up to 4 sets of 32-bit timers with 24-bit up counter and one 8-bit prescale counter
Independent clock source for each timer
Provides four timer counting modes: one-shot, periodic, toggle and continuous
counting
Time-out period = (Period of timer clock input) * (8-bit prescale counter + 1) * (24-bit
TCMP)
Maximum counting cycle time = (1 / T MHz) * (28) * (224), T is the period of timer clock
24-bit up counter value is readable through TDR (Timer Data Register)
Supports event counting function to count the event from external counter pin (T0~T3)
24-bit capture value is readable through TCAP (Timer Capture Data Register)
Supports external pin capture (T0EX~T3EX) for interval measurement
Supports external pin capture (T0EX~T3EX) for reset 24-bit up counter
Supports chip wake-up from Idle/Power-down mode if a timer interrupt signal is
generated
Supports internal capture triggered while internal ACMP output signal transition
(NUC029xAN only)
Supports Inter-Timer trigger mode (NUC029xAN only)
Supports internal signal (CPO0, CPO1) for interval measurement (NUC029FAE only)
Dec. 11, 2017
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NUC029
5.9 PWM Generator and Capture Timer (PWM) (NUC029xAN Only)
5.9.1 Overview
The NuMicro® NUC029xAN has 2 sets of PWM group supporting a total of 4 sets of PWM
generators that can be configured as 8 independent PWM outputs, PWM0~PWM7, or as 4
complementary PWM pairs, (PWM0, PWM1), (PWM2, PWM3), (PWM4, PWM5) and (PWM6,
PWM7) with 4 programmable Dead-zone generators.
Each PWM generator has one 8-bit prescaler, one clock divider with 5 divided frequencies (1, 1/2,
1/4, 1/8, 1/16), two PWM Timers including two clock selectors, two 16-bit PWM counters for PWM
period control, two 16-bit comparators for PWM duty control and one Dead-zone generator. The 4
sets of PWM generators provide 8 independent PWM interrupt flags set by hardware when the
corresponding PWM period down counter reaches 0. Each PWM interrupt source with its
corresponding enable bit can cause CPU to request PWM interrupt. The PWM generators can be
configured as one-shot mode to produce only one PWM cycle signal or auto-reload mode to
output PWM waveform continuously.
When DZEN01 (PCR[4]) is set, PWM0 and PWM1 perform complementary PWM paired function;
the paired PWM period, duty and Dead-time are determined by PWM0 timer and Dead-zone
generator 0. Similarly, the complementary PWM pairs of (PWM2, PWM3), (PWM4, PWM5) and
(PWM6, PWM7) are controlled by PWM2, PWM4 and PWM6 timers and Dead-zone generator 2,
4 and 6, respectively.
To prevent PWM driving output pin with unsteady waveform, the 16-bit period down counter and
16-bit comparator are implemented with double buffer. When user writes data to
counter/comparator buffer registers, the updated value will be load into the 16-bit down counter/
comparator at the time down counter reaching 0. The double buffering feature avoids glitch at
PWM outputs.
When the 16-bit period down counter reaches 0, the interrupt request is generated. If PWM-timer
is set as auto-reload mode, when the down counter reaches 0, it is reloaded with PWM Counter
Register (CNRx) automatically then starts decreasing, repeatedly. If the PWM-timer is set as oneshot mode, the down counter will stop and generate one interrupt request when it reaches 0.
The alternate feature of the PWM-timer is digital input Capture function. If Capture function is
enabled the PWM output pin is switched as capture input mode. The Capture0 and PWM0 share
one timer which is included in PWM0 and the Capture1 and PWM1 share PWM1 timer, and etc.
Therefore user must setup the PWM-timer before enable Capture feature. After capture feature is
enabled, the capture always latched PWM-counter to Capture Rising Latch Register (CRLR)
when input channel has a rising transition and latched PWM-counter to Capture Falling Latch
Register (CFLR) when input channel has a falling transition. Capture channel 0 interrupt is
programmable by setting CRL_IE0 (CCR0[1]) (Rising latch Interrupt enable) and CFL_IE0
(CCR0[2]) (Falling latch Interrupt enable) to decide the condition of interrupt occur. Capture
channel 1 has the same feature by setting CRL_IE1 (CCR0[17]) and CFL_IE1 (CCR0[18]). And
capture channel 2 to channel 3 on each group have the same feature by setting the
corresponding control bits in CCR2. For each group, whenever Capture issues Interrupt 0/1/2/3,
the PWM counter 0/1/2/3 will be reload at this moment.
The maximum captured frequency that PWM can capture is confined by the capture interrupt
latency. When capture interrupt occurred, software will do at least three steps, including: Read
PIIR to get interrupt source and Read CRLRx/CFLRx(x=0~3) to get capture value and finally write
1 to clear PIIR to 0. If interrupt latency will take time T0 to finish, the capture signal mustn’t
transition during this interval (T0). In this case, the maximum capture frequency will be 1/T0.
Dec. 11, 2017
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NUC029 SERIES DATASHEET
The value of PWM counter comparator is used for pulse high width modulation. The counter
control logic changes the output to high level when down-counter value matches the value of
compare register.
NUC029
5.9.2 Features
5.9.2.1
5.9.2.2
PWM Function:
Up to 2 PWM groups (PWMA/PWMB) to support 8 PWM channels or 4
complementary PWM paired channels
Each PWM group has two PWM generators with each PWM generator supporting one
8-bit prescaler, one clock divider, two PWM-timers, one Dead-zone generator and two
PWM outputs.
Up to 16-bit resolution
One-shot or Auto-reload mode
Edge-aligned type or Center-aligned type option
PWM trigger ADC start-to-conversion
Capture Function:
Timing control logic shared with PWM Generators
Supports 8 Capture input channels shared with 8 PWM output channels
Each channel supports one rising latch register (CRLRx), one falling latch register
(CFLRx) and Capture interrupt flag (CAPIFx)
NUC029 SERIES DATASHEET
Dec. 11, 2017
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NUC029
5.10 Enhanced PWM Generator (NUC029FAE Only)
5.10.1 Overview
The NuMicro® NUC029FAE has built one PWM unit which is specially designed for motor driving
control applications. The PWM unit supports six PWM generators which can be configured as
three independent PWM outputs, PWM2, PWM3 and PWM5, or as three complementary PWM
pairs, (PWM0, PWM1), (PWM2, PWM3) and (PWM4, PWM5) with three programmable deadzone generators.
Every complementary PWM pairs share one 8-bit prescaler. There are six clock dividers providing
five divided frequencies (1, 1/2, 1/4, 1/8, 1/16) for each channel. Each PWM output has
independent 16-bit counter for PWM period control, and 16-bit comparators for PWM duty control.
The six PWM generators provide twelve independent PWM interrupt flags which are set by
hardware when the corresponding PWM period counter comparison matched period and duty.
Each PWM interrupt source with its corresponding enable bit can request PWM interrupt. The
PWM generators can be configured as One-shot mode to produce only one PWM cycle signal or
Auto-reload mode to output PWM waveform continuously.
To prevent PWM driving output pin with unsteady waveform, the 16-bit period down counter and
16-bit comparator are implemented with double buffer. When user writes data to
counter/comparator buffer registers, the updated value will be loaded into the 16-bit down
counter/ comparator at the end of current period. The double buffering feature avoids glitch at
PWM outputs.
Besides PWM, Motor controlling also need Timer, ACMP and ADC to work together. In order to
control motor more precisely, we provide some registers that not only configure PWM but also
Timer, ADC and ACMP, by doing so, it can save more CPU time and control motor with ease
especially in BLDC.
5.10.2 Features
The PWM unit supports the following features:
Independent 16-bit PWM duty control units with maximum six port pins:
-
Three independent PWM outputs –PWM2, PWM3 and PWM5
-
Three complementary PWM pairs, with each pin in a pair mutually complement
to each other and capable of programmable dead-zone insertion – (PWM0,
PWM1), (PWM2, PWM3) and (PWM4, PWM5)
Group control bit – PWM2 and PWM4 are synchronized with PWM0, PWM3 and
PWM5 are synchronized with PWM1
One-shot (only support edge alignment mode) or Auto-reload mode PWM
Up to 16-bit resolution
Supports Edge-aligned and Center-aligned mode
Programmable dead-zone insertion between complementary paired PWMs
Each pin of PWM0 to PWM5 has independent polarity setting control
Hardware fault brake protections
-
Dec. 11, 2017
Two Interrupt source types:
Page 57 of 102
Rev 1.04
NUC029 SERIES DATASHEET
NUC029
Synchronously requested at PWM frequency when down counter
comparison matched (edge- and center-aligned mode) or underflow (edgealigned mode)
Requested when external fault brake asserted
BKP0: EINT0 or CPO1
The PWM signals before polarity control stage are defined in the view of positive logic.
The PWM ports is active high or active low are controlled by polarity control register
Supports independently rising CMR matching (in Center-aligned mode), CNR
matching (in Center-aligned mode), falling CMR matching, period matching to trigger
ADC conversion
Timer comparing matching event trigger PWM to do phase change in BLDC
application
Supports ACMP output event trigger PWM to force PWM output at most one period
low, this feature is usually for step motor control
Provides interrupt accumulation function
NUC029 SERIES DATASHEET
Dec. 11, 2017
Page 58 of 102
Rev 1.04
NUC029
5.11 Watchdog Timer (WDT)
5.11.1 Overview
The purpose of Watchdog Timer is to perform a system reset when system runs into an unknown
state. This prevents system from hanging for an infinite period of time. Besides, this Watchdog
Timer supports the function to wake-up system from Idle/Power-down mode.
5.11.2 Features
18-bit free running up counter for Watchdog Timer time-out interval.
Selectable time-out interval (24 ~ 218) WDT_CLK cycle and the time-out interval period
is 104 ms ~ 26.3168 s if WDT_CLK = 10 kHz.
System kept in reset state for a period of (1 / WDT_CLK) * 63
Supports Watchdog Timer reset delay period (NUC029xAN only)
-
Selectable it includes (1026、130、18 or 3) * WDT_CLK reset delay period
Supports to force Watchdog Timer enabled after chip powered on or reset while
CWDTEN (CONFIG0[31] Watchdog Enable) bit is set to 0 (NUC029xAN only)
Supports Watchdog Timer time-out wake-up function only if WDT clock source is
selected as 10 kHz
NUC029 SERIES DATASHEET
Dec. 11, 2017
Page 59 of 102
Rev 1.04
NUC029
5.12 Window Watchdog Timer (WWDT) (NUC029xAN Only)
5.12.1 Overview
The NuMicro® NUC029xAN supports The Window Watchdog Timer (WWDT). WWDT is used to
perform a system reset within a specified window period to prevent software run to uncontrollable
status by any unpredictable condition.
5.12.2 Features
6-bit down counter value WWDTCVAL (WWDTVAL[5:0]) and 6-bit compare window
value WINCMP (WWDTCR[21:16]) to make the WWDT time-out window period
flexible
Supports 4-bit value to programmable maximum 11-bit prescale counter period of
WWDT counter
NUC029 SERIES DATASHEET
Dec. 11, 2017
Page 60 of 102
Rev 1.04
NUC029
5.13 UART Interface Controller (UART)
5.13.1 Overview
The NuMicro® NUC029 series provides up to 2 channels of Universal Asynchronous
Receiver/Transmitters (UART). UART Controller performs Normal Speed UART, and supports
flow control function. The UART Controller performs a serial-to-parallel conversion on data
received from the peripheral, and a parallel-to-serial conversion on data transmitted from the
CPU. The UART controller also supports IrDA SIR Function and RS-485 function mode. The
NUC029xAN also supports LIN master/slave function mode. Each UART Controller channel
supports six types of interrupts. NUC029xAN has seventh interrupt, LIN receiver break field
detected interrupt (LIN_RX_BREAK_INT).
5.13.2 Features
Full duplex, asynchronous communications
Separates receive / transmit 16/16 bytes entry FIFO for data payloads
Supports hardware auto flow control/flow control function (CTS, RTS) and
programmable RTS flow control trigger level
Programmable receiver buffer trigger level
Supports programmable baud-rate generator for each channel individually
Supports CTS wake-up function
Supports 8-bit receiver buffer time-out detection function
Programmable transmitting data delay time between the last stop and the next start bit
by setting DLY (UA_TOR [15:8]) register
Supports break error, frame error, parity error and receive / transmit buffer overflow
detect function
Fully programmable serial-interface characteristics
-
Programmable data bit length, 5-, 6-, 7-, 8-bit character
-
Programmable parity bit, even, odd, no parity or stick parity bit generation and
detection
-
Programmable stop bit length, 1, 1.5, or 2 stop bit generation
Supports IrDA SIR function mode
-
Supports 3-/16-bit duration for normal mode
Supports RS-485 function mode.
-
Supports RS-485 9-bit mode
Dec. 11, 2017
Supports hardware or software enable to control RS-485 transmission direction
by programming RTS pin
Supports LIN function mode (NUC029xAN only)
-
Supports LIN master/slave mode
-
Supports programmable break generation function for transmitter
-
Supports break detect function for receiver
Page 61 of 102
Rev 1.04
NUC029 SERIES DATASHEET
NUC029
5.14 I2C Serial Interface Controller (I2C)
5.14.1 Overview
I2C is a two-wire, bi-directional serial bus that provides a simple and efficient method of data
exchange between devices. The I2C standard is a true multi-master bus including collision
detection and arbitration that prevents data corruption if two or more masters attempt to control
the bus simultaneously.
5.14.2 Features
The I2C bus uses two wires (SDA and SCL) to transfer information between devices connected to
the bus. The main features of the I2C bus include:
NUC029 SERIES DATASHEET
Supports up to two I2C serial interface controller
Master/Slave mode
Bidirectional data transfer between masters and slaves
Multi-master bus (no central master)
Arbitration between simultaneously transmitting masters without corruption of serial
data on the bus
Serial clock synchronization allow devices with different bit rates to communicate via
one serial bus
Serial clock synchronization used as a handshake mechanism to suspend and
resume serial transfer
Built-in a 14-bit time-out counter requesting the I2C interrupt if the I2C bus hangs up
and timer-out counter overflows.
Programmable clocks allow for versatile rate control
Supports 7-bit addressing mode
Supports multiple address recognition ( four slave address with mask option)
Supports Power-down wake-up function
Support FIFO function (NUC029FAE only)
Dec. 11, 2017
Page 62 of 102
Rev 1.04
NUC029
5.15 Serial Peripheral Interface (SPI)
5.15.1 Overview
The Serial Peripheral Interface (SPI) is a synchronous serial data communication protocol that
operates in full duplex mode. Devices communicate in Master/Slave mode with the 4-wire bidirection interface. The NuMicro® NUC029 series contains up to 2 sets of SPI controllers
performing a serial-to-parallel conversion on data received from a peripheral device, and a
parallel-to-serial conversion on data transmitted to a peripheral device. Each set of SPI controller
can be configured as a master or a slave device.
5.15.2 Features
Up to 2 sets of SPI controllers
Supports Master or Slave mode operation
Configurable bit length of a transaction word from 8 to 32 bits
Provides separate 4-layer depth transmit and receive FIFO buffers
Supports MSB first or LSB first transfer sequence
Supports the Byte Reorder function
Supports Byte or Word Suspend mode
Supports Slave 3-wire mode
Supports PLL clock source (NUC029xAN only)
NUC029 SERIES DATASHEET
Dec. 11, 2017
Page 63 of 102
Rev 1.04
NUC029
5.16 Analog-to-Digital Converter (ADC)
5.16.1 Overview
The NuMicro® NUC029xAN contains one 12-bit successive approximation analog-to-digital
converters (SAR A/D converter) with 8 input channels, and The NuMicro® NUC029FAE contains
one 10-bit successive approximation analog-to-digital converters (SAR A/D converter) with 8 input
channels.
The A/D converter of NUC029xAN supports four operation modes: Single, Burst, Single-cycle
Scan and Continuous Scan mode, and the A/D converter of NUC029xAN only supports Single
mode.
The A/D converter can be started by software, PWM trigger and external STADC pin.
5.16.2 Features
Analog input voltage range: 0~AVDD
12-bit resolution and 10-bit accuracy is guaranteed (NUC029xAN only)
10-bit resolution and 8-bit accuracy is guaranteed (NUC029FAE only)
Up to 8 single-end analog input channels
-
Or 4 differential analog input channels (NUC029xAN only)
Up to 760 kSPS sample rate for NUC029xAN
300 KSPS (VDD 4.5V - 5.5V) and 200 KSPS (VDD 2.5V - 5.5V) conversion rate for
NUC029FAE
Four operating modes (NUC029FAE only supports Single mode)
NUC029 SERIES DATASHEET
-
Single mode: A/D conversion is performed one time on a specified channel
-
Burst mode: A/D converter samples and converts the specified single channel
and sequentially stores the result in FIFO.
-
Single-cycle Scan mode: A/D conversion is performed one cycle on all specified
channels with the sequence from the smallest numbered channel to the largest
numbered channel
-
Continuous Scan mode: A/D converter continuously performs Single-cycle scan
mode until software stops A/D conversion
An A/D conversion can be started by:
-
Writing 1 to ADST bit (ADCR[11]) through software
-
PWM trigger with optional start delay period
-
External pin STADC
Each conversion result is held in data register with valid and overrun indicators
Each channel has individual data regiter (NUC029xAN only)
The conversion result can be compared with specify value and user can select
whether to generate an interrupt when conversion result matches the compare
register setting
Channel 7 supports 3 input sources:
Dec. 11, 2017
-
external analog voltage
-
internal Band-gap voltage
Page 64 of 102
Rev 1.04
NUC029
-
internal temperature sensor output (NUC029xAN only)
NUC029 SERIES DATASHEET
Dec. 11, 2017
Page 65 of 102
Rev 1.04
NUC029
5.17 Analog Comparator (ACMP)
5.17.1 Overview
The NuMicro® NUC029 series contains up to four sets of comparators which can be used in a
number of different configurations. The comparator output is logic 1 when positive input voltage is
greater than negative input voltage; otherwise the output is logic 0. Each comparator can be
configured to generate interrupt request when the comparator output value changes.
5.17.2 Features
Up to four sets of Comparator analog modules
Analog input voltage range: 0~ VDD
Supports Hysteresis function
Optional internal reference voltage source for each comparator negative input
Two interrupt vectors for the four analog comparators
External input or internal band-gap voltage selectable at negative node
Interrupt when compared results change
Power-down wake-up
NUC029 SERIES DATASHEET
Dec. 11, 2017
Page 66 of 102
Rev 1.04
NUC029
5.18 Hardware Divider (HDIV) (NUC029xAN Only)
5.18.1 Overview
The NuMicro® NUC029xAN has the hardware divider (HDIV). HDIV is useful to the high
performance application. The hardware divider is a signed, integer divider with both quotient and
remainder outputs.
5.18.2 Features
Signed (two’s complement) integer calculation
32-bit dividend with 16-bit divisor calculation capacity
32-bit quotient and 32-bit remainder outputs (16-bit remainder with sign extends to 32bit)
Divided by zero warning flag
6 HCLK clocks taken for one cycle calculation
Write divisor to trigger calculation
Waiting for calculation ready automatically when reading quotient and remainder
NUC029 SERIES DATASHEET
Dec. 11, 2017
Page 67 of 102
Rev 1.04
NUC029
6
APPLICATION CIRCUIT
DVCC
[1]
AVCC
SPISS0
SPICLK0
MISO_0
AVDD
DVCC
Power
FB
VDD
CS
CLK
MISO
MOSI
MOSI_0
VDD
SPI Device
VSS
0.1uF
0.1uF
VSS
DVCC
FB
DVCC
AVSS
4.7K
4.7K
CLK
SCL0
VDD
ICE_CLK
ICE_DAT
nRST
VSS
SWD
Interface
SDA0
VDD
DIO
I2C Device
VSS
20p
XTAL1
Crystal
D
ALE
4~24 MHz
crystal
20p
LATCH
NUC029LAN
LQFP48
XTAL2
Q
64K x 16-bit
SRAM
Addr[15:0]
En
nCE
nOE
nWE
nLB
nUB
nCS
nRD
nWR
nWRL
nWRH
EBI
DVCC
Data[15:0]
AD[15:0]
Reset
Circuit
10K
RS232 Transceiver
PC COM Port
nRST
10uF/25V
RXD
ROUT
TXD
TIN
RIN
TOUT
UART
NUC029 SERIES DATASHEET
LDO_CAP
1uF
Note: For the SPI device, the NUC029xAN chip
supply voltage must be equal to SPI device
working voltage. For example, when the SPI
Flash working voltage is 3.3 V, the NUC029xAN
chip supply voltage must also be 3.3V.
LDO
Dec. 11, 2017
Page 68 of 102
Rev 1.04
NUC029
7
NUC029XAN ELECTRICAL CHARACTERISTICS
7.1 Absolute Maximum Ratings
SYMBOL
PARAMETER
MIN.
MAX
UNIT
VDDVSS
-0.3
+7.0
V
VIN
VSS-0.3
VDD+0.3
V
1/tCLCL
4
24
MHz
Operating Temperature
TA
-40
+85
C
Storage Temperature
TST
-55
+150
C
Maximum Current into VDD
IDD
-
120
mA
Maximum Current out of VSS
ISS
-
120
mA
-
35
mA
-
35
mA
Maximum Current sunk by total I/O pins
-
100
mA
Maximum Current sourced by total I/O pins
-
100
mA
DC Power Supply
Input Voltage
Oscillator Frequency
Maximum Current sunk by a I/O pin
Maximum Current sourced by a I/O pin
IIO
Note: Exposure to conditions beyond those listed under absolute maximum ratings may adversely affects the lift and reliability
of the device.
NUC029 SERIES DATASHEET
Dec. 11, 2017
Page 69 of 102
Rev 1.04
NUC029
7.2 DC Electrical Characteristics
(VDD-VSS=5.5 V, TA = 25C)
SPECIFICATION
PARAMETER
SYM.
TEST CONDITIONS
MIN. TYP. MAX. UNIT
Operation Voltage
Power Ground
LDO Output Voltage
Band-gap Voltage
Allowed Voltage Difference for VDD
and AVDD
Operating Current
VDD
2.5
-
5.5
V
-0.3
-
-
V
1.62
1.8
1.98
V
VDD > 2.5V
1.16 1.20
1.24
V
VDD = 2.5 V ~ 5.5 V, TA = 25C
1.14 1.20
1.24
V
VDD-AVDD
-0.3
0
0.3
V
IDD1
-
21
-
mA
VSS
AVSS
VLDO
while(1){}
Excuted from Flash
NUC029 SERIES DATASHEET
Operating Current
while(1){}
Excuted from Flash
Operating Current
while(1){}
Excuted from Flash
Operating Current
while(1){}
Excuted from Flash
Dec. 11, 2017
-
VDD
HXT
HIRC
PLL
All digital
modules
5.5V
12 MHz
X
V
V
15
-
mA
5.5V
12 MHz
X
V
X
IDD3
-
20
-
mA
3.3V
12 MHz
X
V
V
IDD4
-
13
-
mA
3.3V
12 MHz
X
V
X
IDD5
-
6.6
-
mA
VDD
HXT
HIRC
PLL
All digital
modules
5.5V
X
V
X
V
IDD6
-
3.7
-
mA
5.5V
X
V
X
X
IDD7
-
6.4
-
mA
3.3V
X
V
X
V
IDD8
-
3.6
-
mA
3.3V
X
V
X
X
IDD9
-
5.4
-
mA
VDD
HXT
HIRC
PLL
All digital
modules
5.5V
12 MHz
X
X
V
IDD10
-
3.6
-
mA
5.5V
12 MHz
X
X
X
IDD11
-
4.0
-
mA
3.3V
12 MHz
X
X
V
IDD12
-
2.3
-
mA
3.3V
12 MHz
X
X
X
IDD13
-
3.3
-
mA
VDD
HXT
HIRC
PLL
All digital
modules
5.5V
4 MHz
X
X
V
Normal Run Mode
HCLK = 4 MHz
TA = -40C ~ 85C
-
Normal Run Mode
HCLK = 12 MHz
VDD = 2.5 V ~ 5.5 V,
IDD2
Normal Run Mode
HCLK = 22.184 MHz
-
VBG
Normal Run Mode
HCLK = 50 MHz
VDD = 2.5V ~ 5.5V up to 50 MHz
IDD14
-
2.5
-
mA
5.5V
4 MHz
X
X
X
IDD15
-
2.0
-
mA
3.3V
4 MHz
X
X
V
IDD16
-
1.3
-
mA
3.3V
4 MHz
X
X
X
Page 70 of 102
Rev 1.04
NUC029
SPECIFICATION
PARAMETER
SYM.
TEST CONDITIONS
MIN. TYP. MAX. UNIT
Operating Current
IDD17
-
110
-
A
Normal Run Mode
HCLK = 10 kHz
while(1){}
Excuted from Flash
HCLK = 50 MHz
HCLK= 22.1184 MHz
5.5V
X
X
PLL
All digital
modules
V
X
V[4]
HIRC LIRC
-
105
-
A
5.5V
X
X
V
X
X
IDD19
-
92
-
A
3.3V
X
X
V
X
V[4]
IDD20
-
90
-
A
3.3V
X
X
V
X
X
IIDLE1
-
17
-
mA
VDD
HXT
HIRC
PLL
All digital
modules
5.5V
12 MHz
X
V
V
IIDLE2
-
10
-
mA
5.5V
12 MHz
X
V
X
IIDLE3
-
15
-
mA
3.3V
12 MHz
X
V
V
IIDLE4
-
8
-
mA
3.3V
12 MHz
X
V
X
IIDLE5
-
4.5
-
mA
VDD
HXT
HIRC
PLL
All digital
modules
5.5V
X
V
X
V
Operating Current
Idle Mode
HXT
IDD18
Operating Current
Idle Mode
VDD
IIDLE6
-
1.6
-
mA
5.5V
X
V
X
X
IIDLE7
-
4.4
-
mA
3.3V
X
V
X
V
IIDLE8
-
1.6
-
mA
3.3V
X
V
X
X
IIDLE9
-
4.1
-
mA
VDD
HXT
HIRC
PLL
All digital
modules
5.5V
12 MHz
X
X
V
Operating Current
IIDLE10
-
2.4
-
mA
5.5V
12 MHz
X
X
X
HCLK = 12 MHz
IIDLE11
-
2.8
-
mA
3.3V
12 MHz
X
X
V
IIDLE12
-
1.2
-
mA
3.3V
12 MHz
X
X
X
IIDLE13
-
2.9
-
mA
VDD
HXT
HIRC
PLL
All digital
modules
5.5V
4 MHz
X
X
V
Operating Current
Idle Mode
IIDLE14
-
2.1
-
mA
5.5V
4 MHz
X
X
X
HCLK = 4 MHz
IIDLE15
-
1.6
-
mA
3.3V
4 MHz
X
X
V
IIDLE16
-
0.9
-
mA
3.3V
4 MHz
X
X
X
IIDLE17
-
106
-
A
VDD
HXT HIRC LIRC
PLL
All digital
modules
5.5V
X
X
V
X
V[4]
Operating Current
Idle Mode
HCLK = 10 kHz
Standby Current
Dec. 11, 2017
IIDLE18
-
104
-
A
5.5V
X
X
V
X
X
IIDLE19
-
90
-
A
3.3V
X
X
V
X
V[4]
IIDLE20
-
89
-
A
3.3V
X
X
V
X
X
IPWD1
-
10
-
A
Page 71 of 102
VDD = 5.5V, All oscillators and analog blocks turned
off
Rev 1.04
NUC029 SERIES DATASHEET
Idle Mode
NUC029
SPECIFICATION
PARAMETER
SYM.
TEST CONDITIONS
MIN. TYP. MAX. UNIT
Power-down Mode
(Deep Sleep Mode)
Logic 0 Input Current P0/1/2/3/4
(Quasi-bidirectional mode)
Logic 1 to 0 Transition Current
P0/1/2/3/4 (Quasi-bidirectional
mode)
IPWD2
-
8
-
IIL
-
-65
-75
-
-690 -750
ITL
[3]
Input Leakage Current P0/1/2/3/4
ILK
Input Low Voltage P0/1/2/3/4 (TTL
input)
VIL1
Input High Voltage P0/1/2/3/4 (TTL
input)
Input Low Voltage XTAL1
[*2]
Input High Voltage XTAL1
[*2]
Negative going threshold
(Schmitt input), nRST
NUC029 SERIES DATASHEET
Positive going threshold
(Schmitt input), nRST
Internal nRST Pin Pull-up Resistor
Negative going threshold
(Schmitt input), P0/1/2/3/4
Positive going threshold
(Schmitt input), P0/1/2/3/4
Source Current P0/1/2/3/4 (Quasibidirectional Mode)
Source Current P0/1/2/3/4 (Pushpull Mode)
Sink Current P0/1/2/3/4 (Quasibidirectional and Push-pull Mode)
Dec. 11, 2017
-1
-
+1
-0.3
-
0.8
A
VDD = 3.3V, All oscillators and analog blocks turned
off
A VDD = 5.5V, VIN = 0V
A VDD = 5.5V, VIN = 2.0V
A
VDD = 5.5V, 0
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