D at a S he e t, V 1. 0 , M ay 20 0 1
C 1 6 4C M /S M
16 -B it S in gl e -C hi p Mi cro c on tro ll e r
Mi cro c on tr ol le rs
N e v e r
s t o p
t h i n k i n g .
Edition 2001-05
Published by Infineon Technologies AG,
St.-Martin-Strasse 53,
D-81541 München, Germany
© Infineon Technologies AG 2001.
All Rights Reserved.
Attention please!
The information herein is given to describe certain components and shall not be considered as warranted
characteristics.
Terms of delivery and rights to technical change reserved.
We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding
circuits, descriptions and charts stated herein.
Infineon Technologies is an approved CECC manufacturer.
Information
For further information on technology, delivery terms and conditions and prices please contact your nearest
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Due to technical requirements components may contain dangerous substances. For information on the types in
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Infineon Technologies Components may only be used in life-support devices or systems with the express written
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and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may
be endangered.
D at a S he e t, V 1. 0 , M ay 20 0 1
C 1 6 4C M /S M
16 -B it S in gl e -C hi p Mi cro c on tro ll e r
Mi cro c on tr ol le rs
N e v e r
s t o p
t h i n k i n g .
C164CM
Revision History:
2001-05
Previous Version:
---
Page
V1.0
Subjects (major changes since last revision)
Controller Area Network (CAN): License of Robert Bosch GmbH
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16-Bit Single-Chip Microcontroller
C166 Family
C164CM
C164CM, C164SM
• High Performance 16-bit CPU with 4-Stage Pipeline
– 80 ns Instruction Cycle Time at 25 MHz CPU Clock
– 400 ns Multiplication (16 × 16 bit), 800 ns Division (32 / 16 bit)
– Enhanced Boolean Bit Manipulation Facilities
– Additional Instructions to Support HLL and Operating Systems
– Register-Based Design with Multiple Variable Register Banks
– Single-Cycle Context Switching Support
– 16 MBytes Total Linear Address Space for Code and Data
– 1024 Bytes On-Chip Special Function Register Area
• 16-Priority-Level Interrupt System with 32 Sources, Sample-Rate down to 40 ns
• 8-Channel Interrupt-Driven Single-Cycle Data Transfer Facilities via
Peripheral Event Controller (PEC)
• Clock Generation via on-chip PLL (factors 1:1.5/2/2.5/3/4/5),
via prescaler or via direct clock input
• On-Chip Memory Modules
– 2 KBytes On-Chip Internal RAM (IRAM)
– 32 KBytes On-Chip Program Mask ROM or OTP Memory
• On-Chip Peripheral Modules
– 8-Channel 10-bit A/D Converter with Programmable Conversion Time
down to 7.8 µs
– 12-Channel General Purpose Capture/Compare Unit (CAPCOM2)
– Capture/Compare Unit for flexible PWM Signal Generation (CAPCOM6)
(3/6 Capture/Compare Channels and 1 Compare Channel)
– Multi-Functional General Purpose Timer Unit with 3 Timers
– Two Serial Channels (Synchronous/Asynchronous and High-Speed-Synchronous)
– On-Chip CAN Interface (Rev. 2.0B active) with 15 Message Objects
(Full CAN/Basic CAN)
– On-Chip Real Time Clock
• Up to 64 KBytes External Address Space for Code and Data
– Programmable External Bus Characteristics for Different Address Ranges
– Multiplexed External Address/Data Bus with
- 8-Bit Data Bus Width (2 KBytes Address Space, A10 … A0, Serial Interfaces)
- 16-Bit Data Bus Width (64 KBytes Address Space, A15 … A0)
• Idle, Sleep, and Power Down Modes with Flexible Power Management
• Programmable Watchdog Timer and Oscillator Watchdog
• Up to 50 General Purpose I/O Lines
Data Sheet
1
V1.0, 2001-05
C164CM
C164SM
• Supported by a Large Range of Development Tools like C-Compilers,
Macro-Assembler Packages, Emulators, Evaluation Boards, HLL-Debuggers,
Simulators, Logic Analyzer Disassemblers, Programming Boards
• On-Chip Bootstrap Loader
• 64-Pin TQFP Package, 0.5 mm pitch
This document describes several derivatives of the C164 group. Table 1 enumerates
these derivatives and summarizes the differences. As this document refers to all of these
derivatives, some descriptions may not apply to a specific product.
Table 1
C164CM Derivative Synopsis
Derivative1)
Program
Memory
CAPCOM6
CAN Interf.
Operating
Frequency
SAK-C164CM-4RF
SAF-C164CM-4RF
32 KByte ROM
Full function
CAN1
20 MHz
SAK-C164CM-4R25F
SAF-C164CM-4R25F
32 KByte ROM
Full function
CAN1
25 MHz
SAK-C164SM-4RF
SAF-C164SM-4RF
32 KByte ROM
Full function
---
20 MHz
SAK-C164SM-4R25F
SAF-C164SM-4R25F
32 KByte ROM
Full function
---
25 MHz
SAK-C164CM-4EF
SAF-C164CM-4EF
32 KByte OTP
Full function
CAN1
20 MHz
1)
This Data Sheet is valid for ROM(less) devices starting with and including design step AA, and for OTP devices
starting with and including design step AA.
For simplicity all versions are referred to by the term C164CM throughout this document.
Data Sheet
2
V1.0, 2001-05
C164CM
C164SM
Ordering Information
The ordering code for Infineon microcontrollers provides an exact reference to the
required product. This ordering code identifies:
• the derivative itself, i.e. its function set, the temperature range, and the supply voltage
• the package and the type of delivery.
For the available ordering codes for the C164CM please refer to the “Product Catalog
Microcontrollers”, which summarizes all available microcontroller variants.
Note: The ordering codes for Mask-ROM versions are defined for each product after
verification of the respective ROM code.
Introduction
The C164CM derivatives of the Infineon C166 Family of full featured single-chip CMOS
microcontrollers are especially suited for cost sensitive applications. They combine high
CPU performance (up to 12.5 million instructions per second) with high peripheral
functionality and enhanced IO-capabilities. They also provide clock generation via PLL
and various on-chip memory modules such as program ROM or OTP, internal RAM, and
extension RAM.
VAREF VAGND VDD
VSS
XTAL1
Port 0
16 Bit
XTAL2
Port 1
16 Bit
RSTIN
C164CM
Port 8
4 Bit
NMI
Port 5
8 Bit
Port 20
6 Bit
MCL04954
Figure 1
Data Sheet
Logic Symbol
3
V1.0, 2001-05
C164CM
C164SM
P5.2/AN2/T3EUD
P5.1/AN1
P5.0/AN0
VAREF
VAGND
P8.3/CC19IO/CAN_TxD
P8.2/CC18IO/CAN_RxD
P8.1/CC17IO/CAN_TxD
P8.0/CC16IO/CAN_RxD
P1.15/CC27IO
P1.14/CC26IO
P1.13/CC25IO
P1.12/CC24IO
VSS
XTAL1
XTAL2
Pin Configuration
(top view)
P5.3/AN3/T3IN
P5.4/AN4/T2EUD
P5.5/AN5/T4EUD
P5.6/AN6/T2IN
P5.7/AN7/T4IN (TRSEL)
VSS
VDD
VSS
P0.7/AD7
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
NMI
RSTIN
P20.0/RD
P20.1/WR
P20.4/ALE
P20.5/EA/Vpp
VDD
P0.15/AD15/SCLK
P0.14/AD14/MTSR
P0.13/AD13/MRST
P0.12/AD12/RxD0
P0.11/AD11/TxD0
P0.10/AD10
P0.9/AD9
P0.8/AD8
VDD
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
1
48
2
47
46
3
4
45
44
5
6
43
7
42
41
8
C164CM
40
9
10
39
11
38
37
12
13
36
14
35
15
34
16
33
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
VDD
P1.11/EX3IN/T7IN/CC31IO
P1.10/CC6POS2/EX2IN/CC30IO
P1.9/CC6POS1/EX1IN/CC29IO
P1.8/CC6POS0/EX0IN/CC28IO
P1.7/CTRAP
P1.6/COUT63
P1.5/COUT62
P1.4/CC62
P1.3/COUT61
P1.2/CC61
P1.1/COUT60
P1.0/CC60
P20.12/RSTOUT
P20.8/CLKOUT/FOUT
VSS
MCP04955
Figure 2
*) The marked pins of Port 8 can have CAN interface lines assigned to them. Table 2 on
the pages below lists the possible assignments.
Data Sheet
4
V1.0, 2001-05
C164CM
C164SM
Table 2
Pin Definitions and Functions
Symbol Pin
No.
Input
Outp.
Function
PORT0
IO
PORT0 consists of the two 8-bit bidirectional I/O ports P0L
and P0H. It is bit-wise programmable for input or output via
direction bits. For a pin configured as input, the output driver
is put into high-impedance state.
In case of an external bus configuration, PORT0 serves as
the address (A) and address/data (AD) bus in multiplexed
bus modes.
A(D)15
Most Significant Address(/Data) Line
SCLK
SSC Master Clock Output / Slave Clock Input.
A(D)14
Address(/Data) Line
MTSR
SSC Master-Transmit/Slave-Receive Outp./Inp.
A(D)13
Address(/Data) Line
MRST
SSC Master-Receive/Slave-Transmit Inp./Outp.
A(D)12
Address(/Data) Line
RxD0
ASC0 Data Input (Async.) or Inp./Outp. (Sync.)
A(D)11
Address(/Data) Line
TxD0
ASC0 Clock/Data Output (Async./Sync.)
A(D)10
Address(/Data) Line
A(D)9
Address(/Data) Line
A(D)8
Address(/Data) Line
AD7
Address/Data Line
AD6
Address/Data Line
AD5
Address/Data Line
AD4
Address/Data Line
AD3
Address/Data Line
AD2
Address/Data Line
AD1
Address/Data Line
AD0
Least Significant Address/Data Line
P0H.7
8
P0H.6
9
P0H.5
10
P0H.4
11
P0H.3
12
P0H.2
P0H.1
P0H.0
P0L.7
P0L.6
P0L.5
P0L.4
P0L.3
P0L.2
P0L.1
P0L.0
13
14
15
18
19
20
21
22
23
24
25
(I)/O
I/O
(I)/O
I/O
(I)/O
I/O
(I)/O
I/O
(I)/O
O
(I)/O
(I)/O
(I)/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
NMI
26
I
Data Sheet
Non-Maskable Interrupt Input. A high to low transition at this
pin causes the CPU to vector to the NMI trap routine. When
the PWRDN (power down) instruction is executed, the NMI
pin must be low in order to force the C164CM into power
down mode. If NMI is high, when PWRDN is executed, the
part will continue to run in normal mode.
If not used, pin NMI should be pulled high externally.
5
V1.0, 2001-05
C164CM
C164SM
Table 2
Pin Definitions and Functions (cont’d)
Symbol Pin
No.
Input
Outp.
Function
RSTIN
I/O
Reset Input with Schmitt-Trigger characteristics. A low level
at this pin while the oscillator is running resets the C164CM.
An internal pullup resistor permits power-on reset using only
a capacitor connected to VSS.
A spike filter suppresses input pulses 100 ns safely pass the filter. The minimum duration for a
safe recognition should be 100 ns + 2 CPU clock cycles.
In bidirectional reset mode (enabled by setting bit BDRSTEN
in register SYSCON) the RSTIN line is internally pulled low
for the duration of the internal reset sequence upon any reset
(HW, SW, WDT). See note below this table.
27
Note: To let the reset configuration of PORT0 settle and to
let the PLL lock a reset duration of ca. 1 ms is
recommended.
Data Sheet
6
V1.0, 2001-05
C164CM
C164SM
Table 2
Pin Definitions and Functions (cont’d)
Symbol Pin
No.
Input
Outp.
Function
P20
IO
Port 20 is a 6-bit bidirectional I/O port (no P20.5 output driver
in the OTP versions). It is bit-wise programmable for input or
output via direction bits. For a pin configured as input, the
output driver is put into high-impedance state.
The following Port 20 pins also serve for alternate functions:
RD
External Memory Read Strobe, activated for
every external instruction or data read access.
External Memory Write Strobe, activated for
WR
every external data write access.
ALE
Address Latch Enable Output.
Can be used for latching the address into external memory
or an address latch in the multiplexed bus modes.
External Access Enable pin.
EA
A low level at this pin during and after Reset forces the
C164CM to latch the configuration from PORT0 and pin RD,
and to begin instruction execution out of external memory.
A high level forces the C164CM to latch the configuration
from pins RD, ALE, and WR, and to begin instruction
execution out of the internal program memory.
“ROMless” versions must have this pin tied to ‘0’.
VPP
OTP Programming voltage
The OTP versions of the C164CM receive the programming
voltage via this pin. (No output driver for P20.5 in this case!)
CLKOUT System Clock Output (= CPU Clock),
FOUT
Programmable Frequency Output
RSTOUT Internal Reset Indication Output. This pin is set
to a low level when the part is executing either a hardware-,
a software- or a watchdog timer reset. RSTOUT remains low
until the EINIT (end of initialization) instruction is executed.
P20.0
28
O
P20.1
29
O
P20.4
30
O
P20.5
31
I
–
P20.8
34
P20.12 35
Data Sheet
O
O
O
7
V1.0, 2001-05
C164CM
C164SM
Table 2
Pin Definitions and Functions (cont’d)
Symbol Pin
No.
Input
Outp.
Function
PORT1
IO
P1L.0
P1L.1
P1L.2
P1L.3
P1L.4
P1L.5
P1L.6
P1L.7
36
37
38
39
40
41
42
43
I/O
O
I/O
O
I/O
O
O
I
P1H.0
44
P1H.1
45
P1H.2
46
P1H.3
47
P1H.4
P1H.5
P1H.6
P1H.7
52
53
54
55
I
I
I/O
I
I
I/O
I
I
I/O
I
I
I/O
I/O
I/O
I/O
I/O
PORT1 consists of the two 8-bit bidirectional I/O ports P1L
and P1H. It is bit-wise programmable for input or output via
direction bits. For a pin configured as input, the output driver
is put into high-impedance state.
The following PORT1 pins also serve for alt. functions:
CC60
CAPCOM6: Input / Output of Channel 0
COUT60 CAPCOM6: Output of Channel 0
CC61
CAPCOM6: Input / Output of Channel 1
COUT61 CAPCOM6: Output of Channel 1
CC62
CAPCOM6: Input / Output of Channel 2
COUT62 CAPCOM6: Output of Channel 2
COUT63 Output of 10-bit Compare Channel
CAPCOM6: Trap Input
CTRAP
CTRAP is an input pin with an internal pullup resistor. A low
level on this pin switches the CAPCOM6 compare outputs to
the logic level defined by software (if enabled).
CC6POS0 CAPCOM6: Position 0 Input,
EX0IN
Fast External Interrupt 0 Input,
CC28IO
CAPCOM2: CC28 Capture Inp./Compare Outp.
CC6POS1 CAPCOM6: Position 1 Input,
EX1IN
Fast External Interrupt 1 Input,
CC29IO
CAPCOM2: CC29 Capture Inp./Compare Outp.
CC6POS2 CAPCOM6: Position 2 Input,
EX2IN
Fast External Interrupt 2 Input,
CC30IO
CAPCOM2: CC30 Capture Inp./Compare Outp.
EX3IN
Fast External Interrupt 3 Input,
T7IN
CAPCOM2: Timer T7 Count Input,
CC31IO
CAPCOM2: CC31 Capture Inp./Compare Outp.
CC24IO
CAPCOM2: CC24 Capture Inp./Compare Outp.
CC25IO
CAPCOM2: CC25 Capture Inp./Compare Outp.
CC26IO
CAPCOM2: CC26 Capture Inp./Compare Outp.
CC27IO
CAPCOM2: CC27 Capture Inp./Compare Outp.
XTAL2
XTAL1
49
50
O
I
XTAL2:
XTAL1:
Data Sheet
Output of the oscillator amplifier circuit.
Input to the oscillator amplifier and input to
the internal clock generator
To clock the device from an external source, drive XTAL1,
while leaving XTAL2 unconnected. Minimum and maximum
high/low and rise/fall times specified in the AC
Characteristics must be observed.
8
V1.0, 2001-05
C164CM
C164SM
Table 2
Pin Definitions and Functions (cont’d)
Symbol Pin
No.
Input
Outp.
Function
P8
IO
Port 8 is a 4-bit bidirectional I/O port. It is bit-wise
programmable for input or output via direction bits. For a pin
configured as input, the output driver is put into highimpedance state. Port 8 outputs can be configured as push/
pull or open drain drivers.
The following Port 8 pins also serve for alternate functions:
CC16IO
CAPCOM2: CC16 Capture Inp./Compare Outp.,
CAN1_RxD CAN1 Receive Data Input
CC17IO
CAPCOM2: CC17 Capture Inp./Compare Outp.,
CAN1_TxD CAN1 Transmit Data Output
CC18IO
CAPCOM2: CC18 Capture Inp./Compare Outp.,
CAN1_RxD CAN1 Receive Data Input
CC19IO
CAPCOM2: CC19 Capture Inp./Compare Outp.,
CAN1_TxD CAN1 Transmit Data Output
P8.0
56
P8.1
57
P8.2
58
P8.3
59
I/O
I
I/O
O
I/O
I
I/O
O
Note: The CAN interface lines are only available in the
C164CM.
P5
I
P5.0
P5.1
P5.2
P5.3
P5.4
P5.5
P5.6
P5.7
62
63
64
1
2
3
4
5
I
I
I
I
I
I
I
I
Port 5 is an 8-bit input-only port with Schmitt-Trigger
characteristic.
The pins of Port 5 also serve as analog input channels for the
A/D converter, or they serve as timer inputs:
AN0
AN1
AN2,
T3EUD GPT1 Timer T3 Ext. Up/Down Ctrl. Inp.
AN3,
T3IN
GPT1 Timer T3 Count Input
AN4,
T2EUD GPT1 Timer T5 Ext. Up/Down Ctrl. Inp.
AN5,
T4EUD GPT1 Timer T4 Ext. Up/Down Ctrl. Inp.
AN6,
T2IN
GPT1 Timer T2 Count Input
AN7,
T4IN
GPT1 Timer T4 Count Input
VAGND
VAREF
VDD
60
–
Reference ground for the A/D converter.
61
–
Reference voltage for the A/D converter.
7, 16,
32, 48
–
Digital Supply Voltage:
+5 V during normal operation and idle mode.
≥2.5 V during power down mode.
VSS
6, 17,
33, 51
–
Digital Ground.
Data Sheet
9
V1.0, 2001-05
C164CM
C164SM
Note: The following behavior differences must be observed when the bidirectional reset
is active:
• Bit BDRSTEN in register SYSCON cannot be changed after EINIT and is cleared
automatically after a reset.
• The reset indication flags always indicate a long hardware reset.
• The PORT0 configuration is treated as if it were a hardware reset. In particular, the
bootstrap loader may be activated when P0L.4 is low.
• Pin RSTIN may only be connected to external reset devices with an open drain output
driver.
• A short hardware reset is extended to the duration of the internal reset sequence.
Data Sheet
10
V1.0, 2001-05
C164CM
C164SM
Functional Description
The architecture of the C164CM combines advantages of both RISC and CISC
processors and of advanced peripheral subsystems in a very well-balanced way. In
addition the on-chip memory blocks allow the design of compact systems with maximum
performance.
The following block diagram gives an overview of the different on-chip components and
of the advanced, high bandwidth internal bus structure of the C164CM.
Note: All time specifications refer to a CPU clock of 25 MHz
(see definition in the AC Characteristics section).
16
Data
ROM / OTP
32 KByte
32
16
CPU
Instr. / Data
Data
Dual Port
C166-Core
ProgMem
16
IRAM
Internal
RAM
2 KByte
Osc / PLL
PEC
XTAL
External Instr. / Data
Interrupt Controller 16-Level
Priority
RTC
WDT
6
Port 20
EBC
Interrupt Bus
Peripheral Data Bus
16
ADC
ASC0
SSC
10-Bit
8
Channels
(USART)
(SPI)
XBUS Control
External Bus
Control
Port 0
16
GPT1
CCOM2 CCOM6
T2
T7
T12
T3
T8
T13
T4
BRGen
Port 8
CAN
Rev 2.0B active
On-Chip XBUS (16-Bit Demux)
16
4
BRGen
Port 5
Port 1
16
8
MCB04323_4cm
Figure 3
Block Diagram
The program memory, the internal RAM (IRAM) and the set of generic peripherals are
connected to the CPU via separate buses. A fourth bus, the XBUS, connects external
resources as well as additional on-chip resoures, the X-Peripherals (see Figure 3).
The XBUS resources (CAN) of the C164CM can be enabled or disabled during
initialization by setting the general X-Peripheral enable bit XPEN (SYSCON.2). Modules
that are disabled consume neither address space nor port pins.
Data Sheet
11
V1.0, 2001-05
C164CM
C164SM
Memory Organization
The memory space of the C164CM is configured in a Von Neumann architecture which
means that code memory, data memory, registers and I/O ports are organized within the
same linear address space which includes 16 MBytes. The entire memory space can be
accessed bytewise or wordwise. Particular portions of the on-chip memory have
additionally been made directly bitaddressable.
The C164CM incorporates 32 KBytes of on-chip OTP memory or on-chip maskprogrammable ROM (not in the ROM-less derivative, of course) for code or constant
data. The on-chip ROM/OTP can be mapped either to segment 0 or segment 1.
The OTP memory can be programmed by the CPU itself (in system, e.g. during booting)
or directly via an external interface (e.g. before assembly). The programming time is
approx. 100 µs per word. An external programming voltage VPP = 11.5 V must be
supplied for this purpose (via pin EA/VPP).
2 KBytes of on-chip Internal RAM (IRAM) are provided as a storage for user defined
variables, for the system stack, general purpose register banks and even for code. A
register bank can consist of up to 16 wordwide (R0 to R15) and/or bytewide (RL0, RH0,
…, RL7, RH7) so-called General Purpose Registers (GPRs).
1024 bytes (2 × 512 bytes) of the address space are reserved for the Special Function
Register areas (SFR space and ESFR space). SFRs are wordwide registers which are
used for controlling and monitoring functions of the different on-chip units. Unused SFR
addresses are reserved for future members of the C166 Family.
In order to meet the needs of designs where more memory is required than is provided
on chip, up to 64 KBytes of external RAM and/or ROM can be connected to the
microcontroller.
Data Sheet
12
V1.0, 2001-05
C164CM
C164SM
External Bus Controller
All of the external memory accesses are performed by a particular on-chip External Bus
Controller (EBC). It can be programmed either to Single Chip Mode when no external
memory is required, or to one of two different external memory access modes, which are
as follows:
– 16-bit Addresses, 16-bit Data, Multiplexed
– 11-bit Addresses, 8-bit Data, Multiplexed
Both addresses and data use PORT0 for input/output.
Important timing characteristics of the external bus interface (Memory Cycle Time,
Memory Tri-State Time, Length of ALE and Read Write Delay) have been made
programmable to allow the user the adaption of a wide range of different types of
memories and external peripherals.
In addition, up to 4 independent address windows may be defined (via register pairs
ADDRSELx / BUSCONx) which control the access to different resources with different
bus characteristics. These address windows are arranged hierarchically where
BUSCON4 overrides BUSCON3 and BUSCON2 overrides BUSCON1. All accesses to
locations not covered by these 4 address windows are controlled by BUSCON0.
Note: The programmable bus features and the window mechanism are standard
features of the C166 architecture. Due to the C164CM’s limited external address
space, however, they can be utilized only to a small extend.
The C164CM will preferably be used in single-chip mode. Applications which require
access to external resources such as peripherals or small memories, will use the 8-bit
data bus with 11-bit address bus in most cases. In this case the upper pins of PORT0
can be used for the serial interfaces. If a wider address or a 16-bit data bus is required
the serial interfaces cannot be used.
Data Sheet
13
V1.0, 2001-05
C164CM
C164SM
Central Processing Unit (CPU)
The main core of the CPU consists of a 4-stage instruction pipeline, a 16-bit arithmetic
and logic unit (ALU) and dedicated SFRs. Additional hardware has been spent for a
separate multiply and divide unit, a bit-mask generator and a barrel shifter.
Based on these hardware provisions, most of the C164CM’s instructions can be
executed in just one machine cycle which requires 2 CPU clocks (4 TCL). For example,
shift and rotate instructions are always processed during one machine cycle
independent of the number of bits to be shifted. All multiple-cycle instructions have been
optimized so that they can be executed very fast as well: branches in 2 cycles, a
16 × 16 bit multiplication in 5 cycles and a 32-/16-bit division in 10 cycles. Another
pipeline optimization, the so-called ‘Jump Cache’, reduces the execution time of
repeatedly performed jumps in a loop from 2 cycles to 1 cycle.
CPU
Internal
RAM
SP
STKOV
STKUN
MDH
MDL
R15
Exec. Unit
Instr. Ptr.
Instr. Reg.
Mul/Div-HW
Bit-Mask Gen
General
4-Stage
Pipeline
R15
Purpose
ALU
32
ROM
16
(16-bit)
Barrel - Shifter
Registers
R0
PSW
SYSCON
Context Ptr.
BUSCON 0
BUSCON 1
BUSCON 2
BUSCON 3
BUSCON 4
ADDRSEL 1
ADDRSEL 2
ADDRSEL 3
ADDRSEL 4
Data Page Ptr.
Code Seg. Ptr.
R0
16
MCB02147
Figure 4
Data Sheet
CPU Block Diagram
14
V1.0, 2001-05
C164CM
C164SM
The CPU has a register context consisting of up to 16 wordwide GPRs at its disposal.
These 16 GPRs are physically allocated within the on-chip RAM area. A Context Pointer
(CP) register determines the base address of the active register bank to be accessed by
the CPU at any time. The number of register banks is only restricted by the available
internal RAM space. For easy parameter passing, a register bank may overlap others.
A system stack of up to 1024 words is provided as a storage for temporary data. The
system stack is allocated in the on-chip RAM area, and it is accessed by the CPU via the
stack pointer (SP) register. Two separate SFRs, STKOV and STKUN, are implicitly
compared against the stack pointer value upon each stack access for the detection of a
stack overflow or underflow.
The high performance offered by the hardware implementation of the CPU can efficiently
be utilized by a programmer via the highly efficient C164CM instruction set which
includes the following instruction classes:
–
–
–
–
–
–
–
–
–
–
–
–
Arithmetic Instructions
Logical Instructions
Boolean Bit Manipulation Instructions
Compare and Loop Control Instructions
Shift and Rotate Instructions
Prioritize Instruction
Data Movement Instructions
System Stack Instructions
Jump and Call Instructions
Return Instructions
System Control Instructions
Miscellaneous Instructions
The basic instruction length is either 2 or 4 bytes. Possible operand types are bits, bytes
and words. A variety of direct, indirect or immediate addressing modes are provided to
specify the required operands.
Data Sheet
15
V1.0, 2001-05
C164CM
C164SM
Interrupt System
With an interrupt response time within a range from just 5 to 12 CPU clocks (in case of
internal program execution), the C164CM is capable of reacting very fast to the
occurrence of non-deterministic events.
The architecture of the C164CM supports several mechanisms for fast and flexible
response to service requests that can be generated from various sources internal or
external to the microcontroller. Any of these interrupt requests can be programmed to
being serviced by the Interrupt Controller or by the Peripheral Event Controller (PEC).
In contrast to a standard interrupt service where the current program execution is
suspended and a branch to the interrupt vector table is performed, just one cycle is
‘stolen’ from the current CPU activity to perform a PEC service. A PEC service implies a
single byte or word data transfer between any two memory locations with an additional
increment of either the PEC source or the destination pointer. An individual PEC transfer
counter is implicity decremented for each PEC service except when performing in the
continuous transfer mode. When this counter reaches zero, a standard interrupt is
performed to the corresponding source related vector location. PEC services are very
well suited, for example, for supporting the transmission or reception of blocks of data.
The C164CM has 8 PEC channels each of which offers such fast interrupt-driven data
transfer capabilities.
A separate control register which contains an interrupt request flag, an interrupt enable
flag and an interrupt priority bitfield exists for each of the possible interrupt sources. Via
its related register, each source can be programmed to one of sixteen interrupt priority
levels. Once having been accepted by the CPU, an interrupt service can only be
interrupted by a higher prioritized service request. For the standard interrupt processing,
each of the possible interrupt sources has a dedicated vector location.
Fast external interrupt inputs are provided to service external interrupts with high
precision requirements. These fast interrupt inputs feature programmable edge
detection (rising edge, falling edge or both edges).
Software interrupts are supported by means of the ‘TRAP’ instruction in combination with
an individual trap (interrupt) number.
Table 3 shows all of the possible C164CM interrupt sources and the corresponding
hardware-related interrupt flags, vectors, vector locations and trap (interrupt) numbers.
Note: Interrupt nodes which are not used by associated peripherals, may be used to
generate software controlled interrupt requests by setting the respective interrupt
request bit (xIR).
Data Sheet
16
V1.0, 2001-05
C164CM
C164SM
Table 3
C164CM Interrupt Nodes
Source of Interrupt or
PEC Service Request
Enable
Flag
Interrupt
Vector
Vector
Location
Trap
Number
Fast External Interrupt 0 CC8IR
CC8IE
CC8INT
00’0060H
18H
Fast External Interrupt 1 CC9IR
CC9IE
CC9INT
00’0064H
19H
Fast External Interrupt 2 CC10IR
CC10IE
CC10INT
00’0068H
1AH
Fast External Interrupt 3 CC11IR
CC11IE
CC11INT
00’006CH
1BH
GPT1 Timer 2
T2IR
T2IE
T2INT
00’0088H
22H
GPT1 Timer 3
T3IR
T3IE
T3INT
00’008CH
23H
GPT1 Timer 4
T4IR
T4IE
T4INT
00’0090H
24H
A/D Conversion
Complete
ADCIR
ADCIE
ADCINT
00’00A0H
28H
A/D Overrun Error
ADEIR
ADEIE
ADEINT
00’00A4H
29H
ASC0 Transmit
S0TIR
S0TIE
S0TINT
00’00A8H
2AH
ASC0 Transmit Buffer
S0TBIR
S0TBIE
S0TBINT
00’011CH
47H
ASC0 Receive
S0RIR
S0RIE
S0RINT
00’00ACH
2BH
ASC0 Error
S0EIR
S0EIE
S0EINT
00’00B0H
2CH
SSC Transmit
SCTIR
SCTIE
SCTINT
00’00B4H
2DH
SSC Receive
SCRIR
SCRIE
SCRINT
00’00B8H
2EH
SSC Error
SCEIR
SCEIE
SCEINT
00’00BCH
2FH
CAPCOM Register 16
CC16IR
CC16IE
CC16INT
00’00C0H
30H
CAPCOM Register 17
CC17IR
CC17IE
CC17INT
00’00C4H
31H
CAPCOM Register 18
CC18IR
CC18IE
CC18INT
00’00C8H
32H
CAPCOM Register 19
CC19IR
CC19IE
CC19INT
00’00CCH
33H
CAPCOM Register 24
CC24IR
CC24IE
CC24INT
00’00E0H
38H
CAPCOM Register 25
CC25IR
CC25IE
CC25INT
00’00E4H
39H
CAPCOM Register 26
CC26IR
CC26IE
CC26INT
00’00E8H
3AH
CAPCOM Register 27
CC27IR
CC27IE
CC27INT
00’00ECH
3BH
CAPCOM Timer 7
T7IR
T7IE
T7INT
00’00F4H
3DH
CAPCOM Timer 8
T8IR
T8IE
T8INT
00’00F8H
3EH
CAPCOM6 Interrupt
CC6IR
CC6IE
CC6INT
00’00FCH
3FH
CAN Interface 1
XP0IR
XP0IE
XP0INT
00’0100H
40H
PLL/OWD and RTC
XP3IR
XP3IE
XP3INT
00’010CH
43H
Data Sheet
Request
Flag
17
V1.0, 2001-05
C164CM
C164SM
Table 3
C164CM Interrupt Nodes (cont’d)
Source of Interrupt or
PEC Service Request
Request
Flag
Enable
Flag
Interrupt
Vector
Vector
Location
Trap
Number
CAPCOM 6 Timer 12
T12IR
T12IE
T12INT
00’0134H
4DH
CAPCOM 6 Timer 13
T13IR
T13IE
T13INT
00’0138H
4EH
CAPCOM 6 Emergency
CC6EIR
CC6EIE
CC6EINT
00’013CH
4FH
Data Sheet
18
V1.0, 2001-05
C164CM
C164SM
The C164CM also provides an excellent mechanism to identify and to process
exceptions or error conditions that arise during run-time, so-called ‘Hardware Traps’.
Hardware traps cause immediate non-maskable system reaction which is similar to a
standard interrupt service (branching to a dedicated vector table location). The
occurrence of a hardware trap is additionally signified by an individual bit in the trap flag
register (TFR). Except when another higher prioritized trap service is in progress, a
hardware trap will interrupt any actual program execution. In turn, hardware trap services
can normally not be interrupted by standard or PEC interrupts.
Table 4 shows all of the possible exceptions or error conditions that can arise during runtime:
Table 4
Hardware Trap Summary
Exception Condition
Trap
Flag
Reset Functions:
– Hardware Reset
– Software Reset
– W-dog Timer Overflow
–
Class A Hardware Traps:
– Non-Maskable Interrupt NMI
– Stack Overflow
STKOF
– Stack Underflow
STKUF
Class B Hardware Traps:
– Undefined Opcode
– Protected Instruction
Fault
– Illegal Word Operand
Access
– Illegal Instruction
Access
– Illegal External Bus
Access
Trap
Vector
Vector
Location
Trap
Number
Trap
Priority
RESET
RESET
RESET
00’0000H
00’0000H
00’0000H
00H
00H
00H
III
III
III
NMITRAP 00’0008H
STOTRAP 00’0010H
STUTRAP 00’0018H
02H
04H
06H
II
II
II
UNDOPC BTRAP
PRTFLT BTRAP
00’0028H
00’0028H
0AH
0AH
I
I
ILLOPA
BTRAP
00’0028H
0AH
I
ILLINA
BTRAP
00’0028H
0AH
I
ILLBUS
BTRAP
00’0028H
0AH
I
Reserved
–
–
[2CH –
3CH]
[0BH –
0FH]
–
Software Traps
– TRAP Instruction
–
–
Any
Any
[00’0000H – [00H –
00’01FCH] 7FH]
in steps
of 4H
Data Sheet
19
Current
CPU
Priority
V1.0, 2001-05
C164CM
C164SM
The Capture/Compare Unit CAPCOM2
The general purpose CAPCOM2 unit supports generation and control of timing
sequences on up to 12 channels with a maximum resolution of 16 TCL. The CAPCOM
units are typically used to handle high speed I/O tasks such as pulse and waveform
generation, pulse width modulation (PMW), Digital to Analog (D/A) conversion, software
timing, or time recording relative to external events.
Two 16-bit timers (T7/T8) with reload registers provide two independent time bases for
the capture/compare register array.
Each dual purpose capture/compare register, which may be individually allocated to
either CAPCOM timer and programmed for capture or compare function, has one port
pin associated with it which serves as an input pin for triggering the capture function, or
as an output pin to indicate the occurrence of a compare event.
When a capture/compare register has been selected for capture mode, the current
contents of the allocated timer will be latched (‘capture’d) into the capture/compare
register in response to an external event at the port pin which is associated with this
register. In addition, a specific interrupt request for this capture/compare register is
generated. Either a positive, a negative, or both a positive and a negative external signal
transition at the pin can be selected as the triggering event. The contents of all registers
which have been selected for one of the five compare modes are continuously compared
with the contents of the allocated timers. When a match occurs between the timer value
and the value in a capture/compare register, specific actions will be taken based on the
selected compare mode.
Table 5
Compare Modes (CAPCOM)
Compare Modes
Function
Mode 0
Interrupt-only compare mode;
several compare interrupts per timer period are possible
Mode 1
Pin toggles on each compare match;
several compare events per timer period are possible
Mode 2
Interrupt-only compare mode;
only one compare interrupt per timer period is generated
Mode 3
Pin set ‘1’ on match; pin reset ‘0’ on compare time overflow;
only one compare event per timer period is generated
Double
Register Mode
Two registers operate on one pin; pin toggles on each compare
match;
several compare events per timer period are possible.
Registers CC16 & CC24 ➞ pin CC16IO
Registers CC17 & CC25 ➞ pin CC17IO
Registers CC18 & CC26 ➞ pin CC18IO
Registers CC19 & CC27 ➞ pin CC19IO
Data Sheet
20
V1.0, 2001-05
C164CM
C164SM
The Capture/Compare Unit CAPCOM6
The CAPCOM6 unit supports generation and control of timing sequences on up to three
16-bit capture/compare channels plus one 10-bit compare channel.
In compare mode the CAPCOM6 unit provides two output signals per channel which
have inverted polarity and non-overlapping pulse transitions. The compare channel can
generate a single PWM output signal and is further used to modulate the capture/
compare output signals.
In capture mode the contents of compare timer 12 is stored in the capture registers upon
a signal transition at pins CCx.
Compare timers T12 (16-bit) and T13 (10-bit) are free running timers which are clocked
by the prescaled CPU clock.
Mode
Select Register
CC6MSEL
Offset Register
T12OF
Compare
Timer T12
16-Bit
Trap Register
CC Channel 1
CC61
CC Channel 2
CC62
CTRAP
CC60
COUT60
CC Channel 0
CC60
Control
fCPU
Prescaler
Period Register
T12P
Port
Control
Logic
CC61
COUT61
CC62
COUT62
fCPU
Prescaler
Control Register
CTCON
Compare
Timer T13
10-Bit
Compare Register
CMP13
COUT63
Block
Commutation
Control
CC6MCON.H
Period Register
T13P
CC6POS0
CC6POS1
CC6POS2
MCB04109
The timer registers (T12, T13) are not directly accessible.
The period and offset registers are loading a value into the timer registers.
Figure 5
CAPCOM6 Block Diagram
For motor control applications both subunits may generate versatile multichannel PWM
signals which are basically either controlled by compare timer 12 or by a typical hall
sensor pattern at the interrupt inputs (block commutation).
Data Sheet
21
V1.0, 2001-05
C164CM
C164SM
General Purpose Timer (GPT) Unit
The GPT unit represents a very flexible multifunctional timer/counter structure which
may be used for many different time related tasks such as event timing and counting,
pulse width and duty cycle measurements, pulse generation, or pulse multiplication.
The GPT unit incorporates three 16-bit timers. Each timer may operate independently in
a number of different modes, or may be concatenated with another timer.
Each of the three timers T2, T3, T4 of module GPT1 can be configured individually for
one of four basic modes of operation, which are Timer, Gated Timer, Counter, and
Incremental Interface Mode. In Timer Mode, the input clock for a timer is derived from
the CPU clock, divided by a programmable prescaler, while Counter Mode allows a timer
to be clocked in reference to external events.
Pulse width or duty cycle measurement is supported in Gated Timer Mode, where the
operation of a timer is controlled by the ‘gate’ level on an external input pin. For these
purposes, each timer has one associated port pin (TxIN) which serves as gate or clock
input. The maximum resolution of the timers in module GPT1 is 16 TCL.
The count direction (up/down) for each timer is programmable by software or may
additionally be altered dynamically by an external signal on a port pin (TxEUD) to
facilitate e.g. position tracking.
In Incremental Interface Mode the GPT1 timers (T2, T3, T4) can be directly connected
to the incremental position sensor signals A and B via their respective inputs TxIN and
TxEUD. Direction and count signals are internally derived from these two input signals,
so the contents of the respective timer Tx corresponds to the sensor position. The third
position sensor signal TOP0 can be connected to an interrupt input.
Timer T3 has an output toggle latch (T3OTL) which changes its state on each timer overflow/underflow. The state of this latch may be used internally to clock timers T2 and T4
for measuring long time periods with high resolution.
In addition to their basic operating modes, timers T2 and T4 may be configured as reload
or capture registers for timer T3. When used as capture or reload registers, timers T2
and T4 are stopped. The contents of timer T3 is captured into T2 or T4 in response to a
signal at their associated input pins (TxIN). Timer T3 is reloaded with the contents of T2
or T4 triggered either by an external signal or by a selectable state transition of its toggle
latch T3OTL.
Data Sheet
22
V1.0, 2001-05
C164CM
C164SM
T2EUD
fCPU
U/D
2n : 1
T2IN
Interrupt
Request
(T2IR)
GPT1 Timer T2
T2
Mode
Control
Reload
Capture
fCPU
Interrupt
Request
(T3IR)
2n : 1
Toggle FF
T3
Mode
Control
T3IN
GPT1 Timer T3
T3OTL
U/D
T3EUD
Other
Timers
Capture
Reload
T4IN
fCPU
2n : 1
T4
Mode
Control
GPT1 Timer T4
Interrupt
Request
(T4IR)
U/D
T4EUD
Mct04825_4.vsd
n = 3 … 10
Figure 6
Data Sheet
Block Diagram of GPT1
23
V1.0, 2001-05
C164CM
C164SM
Real Time Clock
The Real Time Clock (RTC) module of the C164CM consists of a chain of 3 divider
blocks, a fixed 8:1 divider, the reloadable 16-bit timer T14, and the 32-bit RTC timer
(accessible via registers RTCH and RTCL). The RTC module is directly clocked with the
on-chip oscillator frequency divided by 32 via a separate clock driver (fRTC = fOSC/32)
and is therefore independent from the selected clock generation mode of the C164CM.
All timers count up.
The RTC module can be used for different purposes:
• System clock to determine the current time and date
• Cyclic time based interrupt
• 48-bit timer for long term measurements
T14REL
Reload
T14
8:1
f RTC
Interrupt
Request
RTCH
RTCL
MCD04432
Figure 7
RTC Block Diagram
Note: The registers associated with the RTC are not affected by a reset in order to
maintain the correct system time even when intermediate resets are executed.
Data Sheet
24
V1.0, 2001-05
C164CM
C164SM
A/D Converter
For analog signal measurement, a 10-bit A/D converter with 8 multiplexed input channels
and a sample and hold circuit has been integrated on-chip. It uses the method of
successive approximation. The sample time (for loading the capacitors) and the
conversion time is programmable and can so be adjusted to the external circuitry.
Overrun error detection/protection is provided for the conversion result register
(ADDAT): either an interrupt request will be generated when the result of a previous
conversion has not been read from the result register at the time the next conversion is
complete, or the next conversion is suspended in such a case until the previous result
has been read.
For applications which require less than 8 analog input channels, the remaining channel
inputs can be used as digital input port pins.
The A/D converter of the C164CM supports four different conversion modes. In the
standard Single Channel conversion mode, the analog level on a specified channel is
sampled once and converted to a digital result. In the Single Channel Continuous mode,
the analog level on a specified channel is repeatedly sampled and converted without
software intervention. In the Auto Scan mode, the analog levels on a prespecified
number of channels (standard or extension) are sequentially sampled and converted. In
the Auto Scan Continuous mode, the number of prespecified channels is repeatedly
sampled and converted. In addition, the conversion of a specific channel can be inserted
(injected) into a running sequence without disturbing this sequence. This is called
Channel Injection Mode.
The Peripheral Event Controller (PEC) may be used to automatically store the
conversion results into a table in memory for later evaluation, without requiring the
overhead of entering and exiting interrupt routines for each data transfer.
After each reset and also during normal operation the ADC automatically performs
calibration cycles. This automatic self-calibration constantly adjusts the converter to
changing operating conditions (e.g. temperature) and compensates process variations.
These calibration cycles are part of the conversion cycle, so they do not affect the normal
operation of the A/D converter.
In order to decouple analog inputs from digital noise and to avoid input trigger noise
those pins used for analog input can be disconnected from the digital IO or input stages
under software control. This can be selected for each pin separately via register P5DIDIS
(Port 5 Digital Input Disable).
Data Sheet
25
V1.0, 2001-05
C164CM
C164SM
Serial Channels
Serial communication with other microcontrollers, processors, terminals or external
peripheral components is provided by two serial interfaces with different functionality, an
Asynchronous/Synchronous Serial Channel (ASC0) and a High-Speed Synchronous
Serial Channel (SSC).
The ASC0 is upward compatible with the serial ports of the Infineon 8-bit microcontroller
families and supports full-duplex asynchronous communication at up to 781 Kbit/s and
half-duplex synchronous communication at up to 3.1 Mbit/s (@ 25 MHz CPU clock).
A dedicated baud rate generator allows to set up all standard baud rates without
oscillator tuning. For transmission, reception and error handling 4 separate interrupt
vectors are provided. In asynchronous mode, 8- or 9-bit data frames are transmitted or
received, preceded by a start bit and terminated by one or two stop bits. For
multiprocessor communication, a mechanism to distinguish address from data bytes has
been included (8-bit data plus wake up bit mode).
In synchronous mode, the ASC0 transmits or receives bytes (8 bits) synchronously to a
shift clock which is generated by the ASC0. The ASC0 always shifts the LSB first. A loop
back option is available for testing purposes.
A number of optional hardware error detection capabilities has been included to increase
the reliability of data transfers. A parity bit can automatically be generated on
transmission or be checked on reception. Framing error detection allows to recognize
data frames with missing stop bits. An overrun error will be generated, if the last
character received has not been read out of the receive buffer register at the time the
reception of a new character is complete.
The SSC supports full-duplex synchronous communication at up to 6.25 Mbit/s
(@ 25 MHz CPU clock). It may be configured so it interfaces with serially linked
peripheral components. A dedicated baud rate generator allows to set up all standard
baud rates without oscillator tuning. For transmission, reception and error handling
3 separate interrupt vectors are provided.
The SSC transmits or receives characters of 2 … 16 bits length synchronously to a shift
clock which can be generated by the SSC (master mode) or by an external master (slave
mode). The SSC can start shifting with the LSB or with the MSB and allows the selection
of shifting and latching clock edges as well as the clock polarity.
A number of optional hardware error detection capabilities has been included to increase
the reliability of data transfers. Transmit and receive error supervise the correct handling
of the data buffer. Phase and baudrate error detect incorrect serial data.
Data Sheet
26
V1.0, 2001-05
C164CM
C164SM
CAN-Module
The integrated CAN-Module handles the completely autonomous transmission and
reception of CAN frames in accordance with the CAN specification V2.0 part B (active),
i.e. the on-chip CAN-Modules can receive and transmit standard frames with 11-bit
identifiers as well as extended frames with 29-bit identifiers.
The module provides Full CAN functionality on up to 15 message objects. Message
object 15 may be configured for Basic CAN functionality. Both modes provide separate
masks for acceptance filtering which allows to accept a number of identifiers in Full CAN
mode and also allows to disregard a number of identifiers in Basic CAN mode. All
message objects can be updated independent from the other objects and are equipped
for the maximum message length of 8 bytes.
The bit timing is derived from the XCLK and is programmable up to a data rate of 1 Mbit/
s. Each CAN-Module uses two pins of Port 4 or Port 8 to interface to an external bus
transceiver. The interface pins are assigned via software.
Note: When the CAN interface is assigned to Port 8, the respective CAPCOM IO lines
on Port 8 cannot be used.
Watchdog Timer
The Watchdog Timer represents one of the fail-safe mechanisms which have been
implemented to prevent the controller from malfunctioning for longer periods of time.
The Watchdog Timer is always enabled after a reset of the chip, and can only be
disabled in the time interval until the EINIT (end of initialization) instruction has been
executed. Thus, the chip’s start-up procedure is always monitored. The software has to
be designed to service the Watchdog Timer before it overflows. If, due to hardware or
software related failures, the software fails to do so, the Watchdog Timer overflows and
generates an internal hardware reset and pulls the RSTOUT pin low in order to allow
external hardware components to be reset.
The Watchdog Timer is a 16-bit timer, clocked with the system clock divided by 2/4/128/
256. The high byte of the Watchdog Timer register can be set to a prespecified reload
value (stored in WDTREL) in order to allow further variation of the monitored time
interval. Each time it is serviced by the application software, the high byte of the
Watchdog Timer is reloaded. Thus, time intervals between 20 µs and 336 ms can be
monitored (@ 25 MHz).
The default Watchdog Timer interval after reset is 5.24 ms (@ 25 MHz).
Data Sheet
27
V1.0, 2001-05
C164CM
C164SM
Parallel Ports
The C164CM provides up to 50 I/O lines which are organized into four input/output ports
and one input port. All port lines are bit-addressable, and all input/output lines are
individually (bit-wise) programmable as inputs or outputs via direction registers. The I/O
ports are true bidirectional ports which are switched to high impedance state when
configured as inputs. The output drivers of Port 8 can be configured (pin by pin) for push/
pull operation or open-drain operation via a control register. During the internal reset, all
port pins are configured as inputs.
All port lines have programmable alternate input or output functions associated with
them. All port lines that are not used for these alternate functions may be used as general
purpose IO lines.
PORT0 may be used as address and data lines when accessing external memory. Also
the serial interfaces ASC0 and SSC use the upper pins of P0H.
Ports P1L, P1H, and P8 are associated with the capture inputs or compare outputs of
the CAPCOM units and/or serve as external interrupt inputs.
Port 5 is used for the analog input channels to the A/D converter or timer control signals.
Port 20 includes the bus control signals RD, WR, ALE, the configuration input EA, the
the system control output RSTOUT, and the system clock output CLKOUT (or the
programmable frequency output FOUT).
The edge characteristics (transition time) and driver characteristics (output current) of
the C164CM’s port drivers can be selected via the Port Output Control registers
(POCONx).
Data Sheet
28
V1.0, 2001-05
C164CM
C164SM
Oscillator Watchdog
The Oscillator Watchdog (OWD) monitors the clock signal generated by the on-chip
oscillator (either with a crystal or via external clock drive). For this operation the PLL
provides a clock signal which is used to supervise transitions on the oscillator clock. This
PLL clock is independent from the XTAL1 clock. When the expected oscillator clock
transitions are missing the OWD activates the PLL Unlock/OWD interrupt node and
supplies the CPU with the PLL clock signal. Under these circumstances the PLL will
oscillate with its basic frequency.
In direct drive mode the PLL base frequency is used directly (fCPU = 2 … 5 MHz).
In prescaler mode the PLL base frequency is divided by 2 (fCPU = 1 … 2.5 MHz).
Note: The CPU clock source is only switched back to the oscillator clock after a
hardware reset.
The oscillator watchdog can be disabled by setting bit OWDDIS in register SYSCON.
In this case (OWDDIS = ‘1’) the PLL remains idle and provides no clock signal, while the
CPU clock signal is derived directly from the oscillator clock or via prescaler or SDD. Also
no interrupt request will be generated in case of a missing oscillator clock.
Note: At the end of a reset bit OWDDIS reflects the inverted level of pin RD at that time.
Thus the oscillator watchdog may also be disabled via hardware by (externally)
pulling the RD line low upon a reset, similar to the standard reset configuration via
PORT0.
Data Sheet
29
V1.0, 2001-05
C164CM
C164SM
Power Management
The C164CM provides several means to control the power it consumes either at a given
time or averaged over a certain timespan. Three mechanisms can be used (partly in
parallel):
• Power Saving Modes switch the C164CM into a special operating mode (control via
instructions).
Idle Mode stops the CPU while the peripherals can continue to operate.
Sleep Mode and Power Down Mode stop all clock signals and all operation (RTC may
optionally continue running). Sleep Mode can be terminated by external interrupt
signals.
• Clock Generation Management controls the distribution and the frequency of
internal and external clock signals (control via register SYSCON2).
Slow Down Mode lets the C164CM run at a CPU clock frequency of fOSC/1 … 32 (half
for prescaler operation) which drastically reduces the consumed power. The PLL can
be optionally disabled while operating in Slow Down Mode.
External circuitry can be controlled via the programmable frequency output FOUT.
• Peripheral Management permits temporary disabling of peripheral modules (control
via register SYSCON3).
Each peripheral can separately be disabled/enabled. A group control option disables
a major part of the peripheral set by setting one single bit.
The on-chip RTC supports intermittend operation of the C164CM by generating cyclic
wakeup signals. This offers full performance to quickly react on action requests while the
intermittend sleep phases greatly reduce the average power consumption of the system.
Data Sheet
30
V1.0, 2001-05
C164CM
C164SM
Instruction Set Summary
Table 6 lists the instructions of the C164CM in a condensed way.
The various addressing modes that can be used with a specific instruction, the operation
of the instructions, parameters for conditional execution of instructions, and the opcodes
for each instruction can be found in the “C166 Family Instruction Set Manual”.
This document also provides a detailed description of each instruction.
Table 6
Mnemonic
ADD(B)
ADDC(B)
SUB(B)
SUBC(B)
MUL(U)
DIV(U)
DIVL(U)
CPL(B)
NEG(B)
AND(B)
OR(B)
XOR(B)
BCLR
BSET
BMOV(N)
BAND, BOR,
BXOR
BCMP
BFLDH/L
CMP(B)
CMPD1/2
CMPI1/2
PRIOR
SHL / SHR
ROL / ROR
ASHR
Data Sheet
Instruction Set Summary
Description
Add word (byte) operands
Add word (byte) operands with Carry
Subtract word (byte) operands
Subtract word (byte) operands with Carry
(Un)Signed multiply direct GPR by direct GPR (16-16-bit)
(Un)Signed divide register MDL by direct GPR (16-/16-bit)
(Un)Signed long divide reg. MD by direct GPR (32-/16-bit)
Complement direct word (byte) GPR
Negate direct word (byte) GPR
Bitwise AND, (word/byte operands)
Bitwise OR, (word/byte operands)
Bitwise XOR, (word/byte operands)
Clear direct bit
Set direct bit
Move (negated) direct bit to direct bit
AND/OR/XOR direct bit with direct bit
Bytes
2/4
2/4
2/4
2/4
2
2
2
2
2
2/4
2/4
2/4
2
2
4
4
Compare direct bit to direct bit
Bitwise modify masked high/low byte of bit-addressable
direct word memory with immediate data
Compare word (byte) operands
Compare word data to GPR and decrement GPR by 1/2
Compare word data to GPR and increment GPR by 1/2
Determine number of shift cycles to normalize direct
word GPR and store result in direct word GPR
Shift left/right direct word GPR
Rotate left/right direct word GPR
Arithmetic (sign bit) shift right direct word GPR
4
4
31
2/4
2/4
2/4
2
2
2
2
V1.0, 2001-05
C164CM
C164SM
Table 6
Instruction Set Summary (cont’d)
Mnemonic
MOV(B)
MOVBS
MOVBZ
JMPA, JMPI,
JMPR
JMPS
J(N)B
JBC
JNBS
CALLA, CALLI,
CALLR
CALLS
PCALL
TRAP
PUSH, POP
SCXT
RET
RETS
RETP
RETI
SRST
IDLE
PWRDN
SRVWDT
DISWDT
EINIT
ATOMIC
EXTR
EXTP(R)
EXTS(R)
NOP
Data Sheet
Description
Move word (byte) data
Move byte operand to word operand with sign extension
Move byte operand to word operand with zero extension
Jump absolute/indirect/relative if condition is met
Bytes
2/4
2/4
2/4
4
Jump absolute to a code segment
Jump relative if direct bit is (not) set
Jump relative and clear bit if direct bit is set
Jump relative and set bit if direct bit is not set
Call absolute/indirect/relative subroutine if condition is met
4
4
4
4
4
Call absolute subroutine in any code segment
Push direct word register onto system stack and call
absolute subroutine
Call interrupt service routine via immediate trap number
Push/pop direct word register onto/from system stack
Push direct word register onto system stack and update
register with word operand
Return from intra-segment subroutine
Return from inter-segment subroutine
Return from intra-segment subroutine and pop direct
word register from system stack
Return from interrupt service subroutine
Software Reset
Enter Idle Mode
Enter Power Down Mode (supposes NMI-pin being low)
Service Watchdog Timer
Disable Watchdog Timer
Signify End-of-Initialization on RSTOUT-pin
Begin ATOMIC sequence
Begin EXTended Register sequence
Begin EXTended Page (and Register) sequence
Begin EXTended Segment (and Register) sequence
Null operation
4
4
32
2
2
4
2
2
2
2
4
4
4
4
4
4
2
2
2/4
2/4
2
V1.0, 2001-05
C164CM
C164SM
Special Function Registers Overview
Table 7 lists all SFRs which are implemented in the C164CM in alphabetical order.
Bit-addressable SFRs are marked with the letter “b” in column “Name”. SFRs within the
Extended SFR-Space (ESFRs) are marked with the letter “E” in column “Physical
Address”. Registers within on-chip X-peripherals are marked with the letter “X” in column
“Physical Address”.
An SFR can be specified via its individual mnemonic name. Depending on the selected
addressing mode, an SFR can be accessed via its physical address (using the Data
Page Pointers), or via its short 8-bit address (without using the Data Page Pointers).
Table 7
Name
C164CM Registers, Ordered by Name
Physical
Address
8-Bit Description
Addr.
Reset
Value
ADCIC
b FF98H
CCH
A/D Converter End of Conversion
Interrupt Control Register
0000H
ADCON
b FFA0H
D0H
A/D Converter Control Register
0000H
ADDAT
FEA0H
50H
A/D Converter Result Register
0000H
ADDAT2
F0A0H
A/D Converter 2 Result Register
0000H
ADDRSEL1
FE18H
E 50H
0CH
Address Select Register 1
0000H
ADDRSEL2
FE1AH
0DH
Address Select Register 2
0000H
ADDRSEL3
FE1CH
0EH
Address Select Register 3
0000H
ADDRSEL4
FE1EH
0FH
Address Select Register 4
0000H
b FF9AH
CDH
A/D Converter Overrun Error Interrupt
Control Register
0000H
BUSCON0 b FF0CH
86H
Bus Configuration Register 0
0000H
BUSCON1 b FF14H
8AH
Bus Configuration Register 1
0000H
BUSCON2 b FF16H
8BH
Bus Configuration Register 2
0000H
BUSCON3 b FF18H
8CH
Bus Configuration Register 3
0000H
BUSCON4 b FF1AH
8DH
Bus Configuration Register 4
0000H
ADEIC
C1BTR
EF04H
X ---
CAN1 Bit Timing Register
C1CSR
EF00H
X ---
CAN1 Control / Status Register
C1GMS
EF06H
X ---
CAN1 Global Mask Short
C1LARn
EFn4H
X ---
CAN Lower Arbitration Register (msg. n) UUUUH
C1LGML
EF0AH
X ---
CAN Lower Global Mask Long
UUUUH
C1LMLM
EF0EH
X ---
CAN Lower Mask of Last Message
UUUUH
Data Sheet
33
UUUUH
XX01H
UFUUH
V1.0, 2001-05
C164CM
C164SM
Table 7
C164CM Registers, Ordered by Name (cont’d)
Name
Physical
Address
C1MCFGn
EFn6H
X ---
CAN Message Configuration Register
(msg. n)
C1MCRn
EFn0H
X ---
CAN Message Control Register (msg. n) UUUUH
C1PCIR
EF02H
X ---
CAN1 Port Control / Interrupt Register
C1UARn
EFn2H
X ---
CAN Upper Arbitration Register (msg. n) UUUUH
C1UGML
EF08H
X ---
CAN Upper Global Mask Long
UUUUH
C1UMLM
EF0CH
X ---
CAN Upper Mask of Last Message
UUUUH
CC16
FE60H
30H
b F160H
CC16IC
CC17
CC17IC
CC18
CC18IC
CC19
CC19IC
CC20
CC20IC
CC21
CC21IC
CC22
CC22IC
CC23
CC23IC
CC24
CC24IC
CC25
CC25IC
CC26
CC26IC
CC27
Data Sheet
8-Bit Description
Addr.
Reset
Value
UUH
XXXXH
CAPCOM Register 16
0000H
E B0H
31H
CAPCOM Reg. 16 Interrupt Ctrl. Reg.
0000H
CAPCOM Register 17
0000H
E B1H
32H
CAPCOM Reg. 17 Interrupt Ctrl. Reg.
0000H
CAPCOM Register 18
0000H
E B2H
33H
CAPCOM Reg. 18 Interrupt Ctrl. Reg.
0000H
CAPCOM Register 19
0000H
CAPCOM Reg. 19 Interrupt Ctrl. Reg.
0000H
FE68H
E B3H
34H
CAPCOM Register 20
0000H
b F168H
E B4H
CAPCOM Reg. 20 Interrupt Ctrl. Reg.
0000H
FE6AH
35H
CAPCOM Register 21
0000H
CAPCOM Reg. 21 Interrupt Ctrl. Reg.
0000H
CAPCOM Register 22
0000H
CAPCOM Reg. 22 Interrupt Ctrl. Reg.
0000H
CAPCOM Register 23
0000H
FE62H
b F162H
FE64H
b F164H
FE66H
b F166H
b F16AH
E B5H
FE6CH
36H
b F16CH E B6H
FE6EH
37H
b F16EH
E B7H
38H
CAPCOM Reg. 23 Interrupt Ctrl. Reg.
0000H
CAPCOM Register 24
0000H
E B8H
39H
CAPCOM Reg. 24 Interrupt Ctrl. Reg.
0000H
CAPCOM Register 25
0000H
E B9H
3AH
CAPCOM Reg. 25 Interrupt Ctrl. Reg.
0000H
CAPCOM Register 26
0000H
E BAH
3BH
CAPCOM Reg. 26 Interrupt Ctrl. Reg.
0000H
CAPCOM Register 27
0000H
FE70H
b F170H
FE72H
b F172H
FE74H
b F174H
FE76H
34
V1.0, 2001-05
C164CM
C164SM
Table 7
Name
CC27IC
CC28
CC28IC
CC29
CC29IC
CC30
CC30IC
CC31
CC31IC
C164CM Registers, Ordered by Name (cont’d)
Physical
Address
8-Bit Description
Addr.
b F176H
E BBH
FE78H
3CH
b F178H
E BCH
FE7AH
3DH
b F184H E C2H
FE7CH
3EH
b F18CH
E C6H
FE7EH
3FH
b F194H E CAH
Reset
Value
CAPCOM Reg. 27 Interrupt Ctrl. Reg.
0000H
CAPCOM Register 28
0000H
CAPCOM Reg. 28 Interrupt Ctrl. Reg.
0000H
CAPCOM Register 29
0000H
CAPCOM Reg. 29 Interrupt Ctrl. Reg.
0000H
CAPCOM Register 30
0000H
CAPCOM Reg. 30 Interrupt Ctrl. Reg.
0000H
CAPCOM Register 31
0000H
CAPCOM Reg. 31 Interrupt Ctrl. Reg.
0000H
CC60
FE30H
18H
CAPCOM 6 Register 0
0000H
CC61
FE32H
19H
CAPCOM 6 Register 1
0000H
CC62
FE34H
1AH
CAPCOM 6 Register 2
0000H
CC6EIC
b F188H
E C4H
CAPCOM 6 Emergency Interrupt Control
Register
0000H
CC6CIC
b F17EH
E BFH
99H
CAPCOM 6 Interrupt Control Register
0000H
CAPCOM 6 Mode Control Register
00FFH
b FF36H
9BH
CAPCOM 6 Mode Interrupt Ctrl. Reg.
0000H
F036H
E 1BH
CAPCOM 6 Mode Select Register
0000H
CC8IC
b FF88H
C4H
External Interrupt 0 Control Register
0000H
CC9IC
b FF8AH
C5H
External Interrupt 1 Control Register
0000H
CCM4
b FF22H
91H
CAPCOM Mode Control Register 4
0000H
CCM5
b FF24H
92H
CAPCOM Mode Control Register 5
0000H
CCM6
b FF26H
93H
CAPCOM Mode Control Register 6
0000H
CCM7
b FF28H
94H
CAPCOM Mode Control Register 7
0000H
CMP13
FE36H
1BH
CAPCOM 6 Timer 13 Compare Reg.
0000H
CP
FE10H
08H
CPU Context Pointer Register
FC00H
CSP
FE08H
04H
CPU Code Segment Pointer Register
(8 bits, not directly writeable)
0000H
CTCON
b FF30H
98H
CAPCOM 6 Compare Timer Ctrl. Reg.
1010H
DP0H
b F102H
E 81H
CC6MCON b FF32H
CC6MIC
CC6MSEL
Data Sheet
P0H Direction Control Register
35
00H
V1.0, 2001-05
C164CM
C164SM
Table 7
Name
C164CM Registers, Ordered by Name (cont’d)
Physical
Address
8-Bit Description
Addr.
Reset
Value
DP0L
b F100H
E 80H
P0L Direction Control Register
00H
DP1H
b F106H
E 83H
P1H Direction Control Register
00H
DP1L
b F104H
P1L Direction Control Register
00H
DP20
b FFB6H
E 82H
DBH
Port 20 Direction Control Register
00H
DP8
EBH
Port 8 Direction Control Register
00H
DPP0
b FFD6H
FE00H
00H
CPU Data Page Pointer 0 Reg. (10 bits)
0000H
DPP1
FE02H
01H
CPU Data Page Pointer 1 Reg. (10 bits)
0001H
DPP2
FE04H
02H
CPU Data Page Pointer 2 Reg. (10 bits)
0002H
DPP3
FE06H
03H
CPU Data Page Pointer 3 Reg. (10 bits)
0003H
EXICON
b F1C0H
External Interrupt Control Register
0000H
EXISEL
b F1DAH
E E0H
E EDH
External Interrupt Source Select Reg.
0000H
FOCON
b FFAAH
D5H
Frequency Output Control Register
0000H
IDCHIP
F07CH
E 3EH
Identifier
XXXXH
IDMANUF
F07EH
E 3FH
Identifier
1820H
IDMEM
F07AH
E 3DH
Identifier
X008H
IDPROG
F078H
Identifier
XXXXH
IDMEM2
F076H
E 3CH
E 3BH
Identifier
0000H
Interrupt Subnode Control Register
0000H
CPU Multiply Divide Control Register
0000H
ISNC
b F1DEH
MDC
b FF0EH
E EFH
87H
MDH
FE0CH
06H
CPU Multiply Divide Reg. – High Word
0000H
MDL
FE0EH
07H
CPU Multiply Divide Reg. – Low Word
0000H
ODP8
b F1D6H
ONES
b FF1EH
E EBH
8FH
Port 8 Open Drain Control Register
00H
Constant Value 1’s Register (read only)
FFFFH
OPAD
EDC2H X ---
OTP Progr. Interface Address Register
0000H
OPCTRL
EDC0H X ---
OTP Progr. Interface Control Register
0007H
OPDAT
EDC4H X ---
OTP Progr. Interface Data Register
0000H
P0H
b FF02H
81H
Port 0 High Reg. (Upper half of PORT0)
00H
P0L
b FF00H
80H
Port 0 Low Reg. (Lower half of PORT0)
00H
P1H
b FF06H
83H
Port 1 High Reg. (Upper half of PORT1)
00H
P1L
b FF04H
82H
Port 1 Low Reg. (Lower half of PORT1)
00H
Data Sheet
36
V1.0, 2001-05
C164CM
C164SM
Table 7
Name
C164CM Registers, Ordered by Name (cont’d)
Physical
Address
8-Bit Description
Addr.
Reset
Value
P5
b FFA2H
D1H
Port 5 Register (read only)
P5DIDIS
b FFA4H
D2H
Port 5 Digital Input Disable Register
P20
b FFB4H
DAH
Port 20 Register (6 bits)
00H
P8
EAH
Port 8 Register (4 bits)
00H
PECC0
b FFD4H
FEC0H
60H
PEC Channel 0 Control Register
0000H
PECC1
FEC2H
61H
PEC Channel 1 Control Register
0000H
PECC2
FEC4H
62H
PEC Channel 2 Control Register
0000H
PECC3
FEC6H
63H
PEC Channel 3 Control Register
0000H
PECC4
FEC8H
64H
PEC Channel 4 Control Register
0000H
PECC5
FECAH
65H
PEC Channel 5 Control Register
0000H
PECC6
FECCH
66H
PEC Channel 6 Control Register
0000H
PECC7
FECEH
67H
PEC Channel 7 Control Register
0000H
POCON0H
F082H
E 41H
Port P0H Output Control Register
0011H
POCON0L
F080H
E 40H
Port P0L Output Control Register
0011H
POCON1H
F086H
E 43H
Port P1H Output Control Register
0011H
POCON1L
F084H
Port P1L Output Control Register
0011H
POCON20
F0AAH
E 42H
E 55H
Port P20 Output Control Register
0000H
POCON8
F092H
E 49H
88H
Port P8 Output Control Register
0022H
CPU Program Status Word
0000H
PSW
b FF10H
RP0H
b F108H
RSTCON
RTCH
E 84H
b F1E0H m --F0D6H E 6BH
RTCL
F0D4H
S0BG
FEB4H
E 6AH
5AH
S0CON
b FFB0H
S0EIC
S0RBUF
Data Sheet
XXXXH
0000H
System Startup Config. Reg. (Rd. only)
Reset Control Register
XXH
00XXH
RTC High Register
no
RTC Low Register
no
Serial Channel 0 Baud Rate Generator
Reload Register
0000H
D8H
Serial Channel 0 Control Register
0000H
b FF70H
B8H
Serial Channel 0 Error Interrupt Ctrl.
Reg.
0000H
FEB2H
59H
Serial Channel 0 Receive Buffer Reg.
(read only)
37
XXXXH
V1.0, 2001-05
C164CM
C164SM
Table 7
Name
C164CM Registers, Ordered by Name (cont’d)
Physical
Address
8-Bit Description
Addr.
Reset
Value
Serial Channel 0 Receive Interrupt
Control Register
0000H
Serial Channel 0 Transmit Buffer
Interrupt Control Register
0000H
S0RIC
b FF6EH
B7H
S0TBIC
b F19CH
E CEH
FEB0H
58H
Serial Channel 0 Transmit Buffer Reg.
(write only)
0000H
b FF6CH
B6H
Serial Channel 0 Transmit Interrupt
Control Register
0000H
SP
FE12H
09H
CPU System Stack Pointer Register
FC00H
SSCBR
F0B4H
SSC Baudrate Register
0000H
SSC Control Register
0000H
SSC Error Interrupt Control Register
0000H
S0TBUF
S0TIC
SSCCON
b FFB2H
E 5AH
D9H
SSCEIC
b FF76H
BBH
SSCRB
F0B2H
E 59H
SSCRIC
b FF74H
BAH
SSCTB
F0B0H
SSCTIC
b FF72H
E 58H
B9H
STKOV
FE14H
STKUN
SSC Receive Buffer
XXXXH
SSC Receive Interrupt Control Register
0000H
SSC Transmit Buffer
0000H
SSC Transmit Interrupt Control Register
0000H
0AH
CPU Stack Overflow Pointer Register
FA00H
FE16H
0BH
CPU Stack Underflow Pointer Register
FC00H
b FF12H
89H
CPU System Configuration Register
SYSCON1 b F1DCH
E EEH
E E8H
CPU System Configuration Register 1
0000H
CPU System Configuration Register 2
0000H
E EAH
E C8H
CPU System Configuration Register 3
0000H
CAPCOM 6 Timer 12 Interrupt Ctrl. Reg.
0000H
CAPCOM 6 Timer 12 Offset Register
0000H
CAPCOM 6 Timer 12 Period Register
0000H
SYSCON
SYSCON2 b F1D0H
SYSCON3 b F1D4H
T12IC
b F190H
1)
0xx0H
T12OF
F034H
T12P
F030H
E 1AH
E 18H
b F198H
E CCH
CAPCOM 6 Timer 13 Interrupt Ctrl. Reg.
0000H
0000H
T13IC
T13P
F032H
E 19H
CAPCOM 6 Timer 13 Period Register
T14
F0D2H
RTC Timer 14 Register
no
T14REL
F0D0H
E 69H
E 68H
RTC Timer 14 Reload Register
no
T2
FE40H
20H
GPT1 Timer 2 Register
0000H
b FF40H
A0H
GPT1 Timer 2 Control Register
0000H
T2CON
Data Sheet
38
V1.0, 2001-05
C164CM
C164SM
Table 7
Name
C164CM Registers, Ordered by Name (cont’d)
8-Bit Description
Addr.
Reset
Value
b FF60H
B0H
GPT1 Timer 2 Interrupt Control Register
0000H
FE42H
21H
GPT1 Timer 3 Register
0000H
T3CON
b FF42H
A1H
GPT1 Timer 3 Control Register
0000H
T3IC
b FF62H
B1H
GPT1 Timer 3 Interrupt Control Register
0000H
FE44H
22H
GPT1 Timer 4 Register
0000H
T4CON
b FF44H
A2H
GPT1 Timer 4 Control Register
0000H
T4IC
b FF64H
B2H
GPT1 Timer 4 Interrupt Control Register
0000H
F050H
E 28H
90H
CAPCOM Timer 7 Register
0000H
CAPCOM Timer 7 and 8 Ctrl. Reg.
0000H
E BDH
E 2AH
CAPCOM Timer 7 Interrupt Ctrl. Reg.
0000H
CAPCOM Timer 7 Reload Register
0000H
CAPCOM Timer 8 Register
0000H
b F17CH
E 29H
E BEH
CAPCOM Timer 8 Interrupt Ctrl. Reg.
0000H
F056H
E 2BH
CAPCOM Timer 8 Reload Register
0000H
T2IC
T3
T4
T7
Physical
Address
T78CON
b FF20H
T7IC
b F17AH
T7REL
F054H
T8
F052H
T8IC
T8REL
TFR
b FFACH
D6H
Trap Flag Register
0000H
TRCON
b FF34H
9AH
CAPCOM 6 Trap Enable Ctrl. Reg.
00XXH
WDT
FEAEH
57H
Watchdog Timer Register (read only)
0000H
WDTCON
FFAEH
D7H
Watchdog Timer Control Register
XP0IC
b F186H
CAN1 Module Interrupt Control Register
0000H
XP1IC
b F18EH
E C3H
E C7H
Unassigned Interrupt Control Reg.
0000H
XP3IC
b F19EH
PLL/RTC Interrupt Control Register
0000H
ZEROS
b FF1CH
E CFH
8EH
Constant Value 0’s Register (read only)
0000H
1)
The system configuration is selected during reset.
2)
The reset value depends on the indicated reset source.
2)
00xxH
Note: The three registers of the OTP programming interface are, of course, only
implemented in the OTP versions of the C164CM.
Data Sheet
39
V1.0, 2001-05
C164CM
C164SM
Absolute Maximum Ratings
Table 8
Absolute Maximum Rating Parameters
Parameter
Symbol
Limit Values
min.
Unit
Notes
max.
TST
TJ
VDD
-65
150
°C
–
-40
150
°C
under bias
-0.5
6.5
V
–
Voltage on any pin with
respect to ground (VSS)
VIN
-0.5
VDD + 0.5 V
–
Input current on any pin
during overload condition
–
-10
10
mA
–
Absolute sum of all input
currents during overload
condition
–
–
|100|
mA
–
Power dissipation
PDISS
–
1.5
W
–
Storage temperature
Junction temperature
Voltage on VDD pins with
respect to ground (VSS)
Note: Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in
the operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
During absolute maximum rating overload conditions (VIN > VDD or VIN < VSS) the
voltage on VDD pins with respect to ground (VSS) must not exceed the values
defined by the absolute maximum ratings.
Data Sheet
40
V1.0, 2001-05
C164CM
C164SM
Operating Conditions
The following operating conditions must not be exceeded in order to ensure correct
operation of the C164CM. All parameters specified in the following sections refer to
these operating conditions, unless otherwise noticed.
Table 9
Operating Condition Parameters
Parameter
Digital supply voltage
Symbol
VDD
VSS
IOV
Overload current
Absolute sum of overload Σ|IOV|
Limit Values
Unit Notes
min.
max.
4.5
5.5
V
Active mode,
fCPUmax = 25 MHz
2.51)
5.5
V
PowerDown mode
V
Reference voltage
Digital ground voltage
0
–
±5
mA
Per pin2)3)
–
50
mA
3)
currents
External Load
Capacitance
CL
–
100
pF
Pin drivers in
default mode4)
Ambient temperature
TA
0
70
°C
SAB-C164CM …
-40
85
°C
SAF-C164CM …
-40
125
°C
SAK-C164CM …
1)
Output voltages and output currents will be reduced when VDD leaves the range defined for active mode.
2)
Overload conditions occur if the standard operatings conditions are exceeded, i.e. the voltage on any pin
exceeds the specified range (i.e. VOV > VDD + 0.5 V or VOV < VSS - 0.5 V). The absolute sum of input overload
currents on all pins may not exceed 50 mA. The supply voltage must remain within the specified limits.
Proper operation is not guaranteed if overload conditions occur on functional pins line XTAL1, RD, WR, etc.
3)
Not 100% tested, guaranteed by design and characterization.
4)
The timing is valid for pin drivers operating in default current mode (selected after reset). Reducing the output
current may lead to increased delays or reduced driving capability (CL).
Data Sheet
41
V1.0, 2001-05
C164CM
C164SM
Parameter Interpretation
The parameters listed in the following partly represent the characteristics of the C164CM
and partly its demands on the system. To aid in interpreting the parameters right, when
evaluating them for a design, they are marked in column “Symbol”:
CC (Controller Characteristics):
The logic of the C164CM will provide signals with the respective characteristics.
SR (System Requirement):
The external system must provide signals with the respective characteristics to the
C164CM.
DC Characteristics
(Operating Conditions apply)1)
Parameter
Symbol
Limit Values
min.
Unit Test Conditions
max.
Input low voltage (TTL,
all except XTAL1)
VIL
0.2 VDD V
- 0.1
–
Input low voltage XTAL1
VIL2 SR -0.5
0.3 VDD V
VIH SR 0.2 VDD VDD + V
–
Input high voltage (TTL,
all except RSTIN, XTAL1)
SR -0.5
+ 0.9
–
0.5
Input high voltage RSTIN
(when operated as input)
VIH1 SR 0.6 VDD VDD +
Input high voltage XTAL1
VIH2 SR 0.7 VDD VDD +
V
–
V
–
1.0
V
0.45
V
–
V
IOL ≤ IOLmax3)
IOL ≤ IOLnom3)4)
IOH ≥ IOHmax3)
–
V
IOH ≥ IOHnom3)4)
±200
nA
0 V < VIN < VDD
±500
nA
0.45 V < VIN <
0.5
0.5
Output low voltage2)
VOL CC –
–
Output high voltage5)
VOH CC VDD 1.0
VDD 0.45
IOZ1 CC –
Input leakage current (all other) IOZ2 CC –
Input leakage current (Port 5)
RSTIN inactive current6)
RSTIN active current6)
RD/WR inact. current9)
RD/WR active current9)
Data Sheet
IRSTH7)
IRSTL8)
IRWH7)
IRWL8)
–
-10
µA
-100
–
µA
–
-40
µA
-500
–
µA
42
VDD
VIN = VIH1
VIN = VIL
VOUT = 2.4 V
VOUT = VOLmax
V1.0, 2001-05
C164CM
C164SM
DC Characteristics (cont’d)
(Operating Conditions apply)1)
Parameter
Symbol
ALE inactive current
9)
7)
9)
ALE active current
PORT0 configuration current10)
XTAL1 input current
Pin capacitance11)
(digital inputs/outputs)
IALEL
IALEH8)
IP0H7)
IP0L8)
IIL CC
CIO CC
Limit Values
Unit Test Conditions
min.
max.
–
40
µA
500
–
µA
–
-10
µA
-100
–
µA
–
±20
µA
–
10
pF
VOUT = VOLmax
VOUT = 2.4 V
VIN = VIHmin
VIN = VILmax
0 V < VIN < VDD
f = 1 MHz
TA = 25 °C
1)
Keeping signal levels within the levels specified in this table, ensures operation without overload conditions.
For signal levels outside these specifications also refer to the specification of the overload current IOV.
2)
For pin RSTIN this specification is only valid in bidirectional reset mode.
3)
The maximum deliverable output current of a port driver depends on the selected output driver mode, see
Table 10, Current Limits for Port Output Drivers. The limit for pin groups must be respected.
4)
As a rule, with decreasing output current the output levels approach the respective supply level (VOL → VSS,
VOH → VDD). However, only the levels for nominal output currents are guaranteed.
5)
This specification is not valid for outputs which are switched to open drain mode. In this case the respective
output will float and the voltage results from the external circuitry.
6)
These parameters describe the RSTIN pullup, which equals a resistance of ca. 50 to 250 kΩ.
7)
The maximum current may be drawn while the respective signal line remains inactive.
8)
The minimum current must be drawn in order to drive the respective signal line active.
9)
This specification is valid during Reset and during Adapt-mode.
10)
This specification is valid during Reset if required for configuration, and during Adapt-mode.
11)
Not 100% tested, guaranteed by design and characterization.
Table 10
Current Limits for Port Output Drivers
Port Output Driver
Mode
Maximum Output Current
(IOLmax, -IOHmax)1)
Nominal Output Current
(IOLnom, -IOHnom)
Strong driver
10 mA
2.5 mA
Medium driver
4.0 mA
1.0 mA
Weak driver
0.5 mA
0.1 mA
1)
An output current above |IOXnom | may be drawn from up to three pins at the same time.
For any group of 16 neighboring port output pins the total output current in each direction (ΣIOL and Σ-IOH)
must remain below 50 mA.
Data Sheet
43
V1.0, 2001-05
C164CM
C164SM
Power Consumption C164CM (ROM)
(Operating Conditions apply)
Parameter
Symbol
Limit Values
min.
max.
Unit Test
Conditions
Power supply current (active)
with all peripherals active
IDD
–
1+
mA
2.5 × fCPU
RSTIN = VIL
fCPU in [MHz]1)
Idle mode supply current
with all peripherals active
IIDX
–
1+
mA
1.1 × fCPU
RSTIN = VIH1
fCPU in [MHz]1)
Idle mode supply current
with all peripherals deactivated,
PLL off, SDD factor = 32
IIDO2)
–
500 +
50 × fOSC
µA
RSTIN = VIH1
fOSC in [MHz]1)
Sleep and Power-down mode
supply current with RTC running
IPDR2)
–
200 +
25 × fOSC
µA
–
50
µA
VDD = VDDmax
fOSC in [MHz]3)
VDD = VDDmax3)
Sleep and Power-down mode
IPDO
supply current with RTC disabled
1)
The supply current is a function of the operating frequency. This dependency is illustrated in Figure 9.
These parameters are tested at VDDmax and maximum CPU clock with all outputs disconnected and all inputs
at VIL or VIH.
2)
This parameter is determined mainly by the current consumed by the oscillator (see Figure 8). This current,
however, is influenced by the external oscillator circuitry (crystal, capacitors). The values given refer to a typical
circuitry and may change in case of a not optimized external oscillator circuitry.
3)
This parameter is tested including leakage currents. All inputs (including pins configured as inputs) at 0 V to
0.1 V or at VDD - 0.1 V to VDD, VREF = 0 V, all outputs (including pins configured as outputs) disconnected.
Power Consumption C164CM (OTP)
(Operating Conditions apply)
Parameter
Symbol
min.
max.
Power supply current (active)
with all peripherals active
IDD
–
10 +
3.5 × fCPU
mA
RSTIN = VIL
fCPU in [MHz]1)
Idle mode supply current
with all peripherals active
IIDX
–
5+
mA
1.25 × fCPU
RSTIN = VIH1
fCPU in [MHz]1)
Idle mode supply current
with all peripherals deactivated,
PLL off, SDD factor = 32
IIDO2) –
µA
RSTIN = VIH1
fOSC in [MHz]1)
Data Sheet
Limit Values
44
500 +
50 × fOSC
Unit Test
Conditions
V1.0, 2001-05
C164CM
C164SM
Power Consumption C164CM (OTP) (cont’d)
(Operating Conditions apply)
Parameter
Symbol
min.
max.
Sleep and Power-down mode
supply current with RTC running
IPDR2)
–
200 +
25 × fOSC
µA
–
50
µA
Sleep and Power-down mode
IPDO
supply current with RTC disabled
Limit Values
Unit Test
Conditions
VDD = VDDmax
fOSC in [MHz]3)
VDD = VDDmax3)
1)
The supply current is a function of the operating frequency. This dependency is illustrated in Figure 10.
These parameters are tested at VDDmax and maximum CPU clock with all outputs disconnected and all inputs
at VIL or VIH.
2)
This parameter is determined mainly by the current consumed by the oscillator (see Figure 8). This current,
however, is influenced by the external oscillator circuitry (crystal, capacitors). The values given refer to a typical
circuitry and may change in case of a not optimized external oscillator circuitry.
3)
This parameter is tested including leakage currents. All inputs (including pins configured as inputs) at 0 V to
0.1 V or at VDD - 0.1 V to VDD, VREF = 0 V, all outputs (including pins configured as outputs) disconnected.
Ι
µA
1500
1250
I IDOmax
1000
I IDOtyp
750
500
I PDRmax
250
I PDOmax
0
0
4
8
12
16
MHz f OSC
MCD04433
Figure 8
Data Sheet
Idle and Power Down Supply Current as a Function of Oscillator
Frequency
45
V1.0, 2001-05
C164CM
C164SM
I [mA]
100
80
IDD5max
IDD5typ
60
40
IIDX5max
IIDX5typ
20
10
Figure 9
Data Sheet
15
20
25
fCPU [MHz]
Supply/Idle Current as a Function of Operating Frequency
for ROM Derivatives
46
V1.0, 2001-05
C164CM
C164SM
I [mA]
IDD5max
100
IDD5typ
80
60
IIDX5max
40
IIDX5typ
20
10
Figure 10
Data Sheet
15
20
25
fCPU [MHz]
Supply/Idle Current as a Function of Operating Frequency
for OTP Derivatives
47
V1.0, 2001-05
C164CM
C164SM
AC Characteristics
Definition of Internal Timing
The internal operation of the C164CM is controlled by the internal CPU clock fCPU. Both
edges of the CPU clock can trigger internal (e.g. pipeline) or external (e.g. bus cycles)
operations.
The specification of the external timing (AC Characteristics) therefore depends on the
time between two consecutive edges of the CPU clock, called “TCL” (see Figure 11).
Phase Locked Loop Operation
fOSC
TCL
fCPU
TCL
Direct Clock Drive
fOSC
TCL
fCPU
TCL
Prescaler Operation
fOSC
TCL
fCPU
TCL
Figure 11
MCT04338
Generation Mechanisms for the CPU Clock
The CPU clock signal fCPU can be generated from the oscillator clock signal fOSC via
different mechanisms. The duration of TCLs and their variation (and also the derived
external timing) depends on the used mechanism to generate fCPU. This influence must
be regarded when calculating the timings for the C164CM.
Note: The example for PLL operation shown in Figure 11 refers to a PLL factor of 4.
The used mechanism to generate the basic CPU clock is selected by bitfield CLKCFG
in register RP0H.7-5.
Upon a long hardware reset register RP0H is loaded with the logic levels present on the
upper half of PORT0 (P0H), i.e. bitfield CLKCFG represents the logic levels on pins
Data Sheet
48
V1.0, 2001-05
C164CM
C164SM
P0.15-13 (P0H.7-5). Register RP0H can be loaded from the upper half of register
RSTCON under software control.
Table 11 associates the combinations of these three bits with the respective clock
generation mode.
Table 11
C164CM Clock Generation Modes
CLKCFG1) CPU Frequency
(RP0H.7-5) fCPU = fOSC × F
fOSC × 4
1 1 1
1 1 0
1 0 1
1 0 0
0 1 1
0 1 0
0 0 1
0 0 0
fOSC × 3
fOSC × 2
fOSC × 5
fOSC × 1
fOSC × 1.5
fOSC / 2
fOSC × 2.5
External Clock
Input Range2)
Notes
2.5 to 6.25 MHz
Default configuration
3.33 to 8.33 MHz
–
5 to 12.5 MHz
–
2 to 5 MHz
–
1 to 25 MHz
Direct drive3)
6.66 to 16.66 MHz
–
2 to 50 MHz
CPU clock via prescaler
4 to 10 MHz
–
1)
Please note that pin P0.15 (corresponding to RP0H.7) is inverted in emulation mode, and thus also in EHM.
2)
The external clock input range refers to a CPU clock range of 10 … 25 MHz.
3)
The maximum frequency depends on the duty cycle of the external clock signal.
Prescaler Operation
When prescaler operation is configured (CLKCFG = 001B) the CPU clock is derived from
the internal oscillator (input clock signal) by a 2:1 prescaler.
The frequency of fCPU is half the frequency of fOSC and the high and low time of fCPU (i.e.
the duration of an individual TCL) is defined by the period of the input clock fOSC.
The timings listed in the AC Characteristics that refer to TCLs therefore can be
calculated using the period of fOSC for any TCL.
Phase Locked Loop
When PLL operation is configured (via CLKCFG) the on-chip phase locked loop is
enabled and provides the CPU clock (see Table 11). The PLL multiplies the input
frequency by the factor F which is selected via the combination of pins P0.15-13 (i.e.
fCPU = fOSC × F). With every F’th transition of fOSC the PLL circuit synchronizes the CPU
clock to the input clock. This synchronization is done smoothly, i.e. the CPU clock
frequency does not change abruptly.
Data Sheet
49
V1.0, 2001-05
C164CM
C164SM
Due to this adaptation to the input clock the frequency of fCPU is constantly adjusted so
it is locked to fOSC. The slight variation causes a jitter of fCPU which also effects the
duration of individual TCLs.
The timings listed in the AC Characteristics that refer to TCLs therefore must be
calculated using the minimum TCL that is possible under the respective circumstances.
The actual minimum value for TCL depends on the jitter of the PLL. As the PLL is
constantly adjusting its output frequency so it corresponds to the applied input frequency
(crystal or oscillator) the relative deviation for periods of more than one TCL is lower than
for one single TCL (see formula and Figure 12).
For a period of N × TCL the minimum value is computed using the corresponding
deviation DN:
(N × TCL)min = N × TCLNOM - DN; DN [ns] = ±(13.3 + N × 6.3)/fCPU [MHz],
where N = number of consecutive TCLs and 1 ≤ N ≤ 40.
So for a period of 3 TCLs @ 25 MHz (i.e. N = 3): D3 = (13.3 + 3 × 6.3)/25 = 1.288 ns,
and (3TCL)min = 3TCLNOM - 1.288 ns = 58.7 ns (@ fCPU = 25 MHz).
This is especially important for bus cycles using waitstates and e.g. for the operation of
timers, serial interfaces, etc. For all slower operations and longer periods (e.g. pulse train
generation or measurement, lower baudrates, etc.) the deviation caused by the PLL jitter
is neglectible.
Note: For all periods longer than 40 TCL the N = 40 value can be used (see Figure 12).
Max. jitter DN
ns
±30
This approximated formula is valid for
1<
–N<
– 40 and 10 MHz <
– fCPU <
– 25 MHz.
10 MHz
±26.5
±20
16 MHz
20 MHz
25 MHz
±10
±1
1
10
20
30
40
N
MCD04455
Figure 12
Data Sheet
Approximated Maximum Accumulated PLL Jitter
50
V1.0, 2001-05
C164CM
C164SM
Direct Drive
When direct drive is configured (CLKCFG = 011B) the on-chip phase locked loop is
disabled and the CPU clock is directly driven from the internal oscillator with the input
clock signal.
The frequency of fCPU directly follows the frequency of fOSC so the high and low time of
fCPU (i.e. the duration of an individual TCL) is defined by the duty cycle of the input clock
fOSC.
The timings listed below that refer to TCLs therefore must be calculated using the
minimum TCL that is possible under the respective circumstances. This minimum value
can be calculated via the following formula:
TCLmin = 1/fOSC × DCmin
(DC = duty cycle)
For two consecutive TCLs the deviation caused by the duty cycle of fOSC is compensated
so the duration of 2TCL is always 1/fOSC. The minimum value TCLmin therefore has to
be used only once for timings that require an odd number of TCLs (1, 3, …). Timings that
require an even number of TCLs (2, 4, …) may use the formula 2TCL = 1/fOSC.
Data Sheet
51
V1.0, 2001-05
C164CM
C164SM
AC Characteristics
External Clock Drive XTAL1
(Operating Conditions apply)
Table 12
External Clock Drive Characteristics
Parameter
Symbol
min.
Oscillator period
High time2)
Low time
2)
Rise time
2)
2)
Fall time
tOSC
t1
t2
t3
t4
Prescaler
2:1
Direct Drive
1:1
PLL
1:N
Unit
max.
min.
max.
min.
max.
–
20
–
601)
5001)
ns
SR 203)
–
6
–
10
–
ns
3)
–
6
–
10
–
ns
SR –
8
–
5
–
10
ns
SR –
8
–
5
–
10
ns
SR 40
SR 20
1)
The minimum and maximum oscillator periods for PLL operation depend on the selected CPU clock generation
mode. Please see respective table above.
2)
The clock input signal must reach the defined levels VIL2 and VIH2.
3)
The minimum high and low time refers to a duty cycle of 50%. The maximum operating frequency (fCPU) in
direct drive mode depends on the duty cycle of the clock input signal.
t1
t3
t4
VIH2
0.5 VDD
VIL
t2
t OSC
MCT02534
Figure 13
External Clock Drive XTAL1
Note: If the on-chip oscillator is used together with a crystal, the oscillator frequency is
limited to a range of 4 MHz to 16 MHz.
It is strongly recommended to measure the oscillation allowance (or margin) in the
final target system (layout) to determine the optimum parameters for the oscillator
operation. Please refer to the limits specified by the crystal supplier.
When driven by an external clock signal it will accept the specified frequency
range. Operation at lower input frequencies is possible but is guaranteed by
design only (not 100% tested).
Data Sheet
52
V1.0, 2001-05
C164CM
C164SM
A/D Converter Characteristics
(Operating Conditions apply)
Table 13
A/D Converter Characteristics
Parameter
Analog reference supply
Analog reference ground
Analog input voltage range
Basic clock frequency
Conversion time
Symbol
VAREF SR
VAGNDSR
VAIN SR
fBC
tC
CC
Limit Values
Unit Test
Conditions
min.
max.
4.0
VSS - 0.1
VAGND
VDD + 0.1 V
VSS + 0.2 V
VAREF
V
0.5
6.25
–
40 tBC + –
tS + 2tCPU
4)
3328 tBC
–
5)
1)
–
2)
MHz 3)
tCPU = 1 / fCPU
Calibration time after reset
tCAL
Total unadjusted error
TUE CC –
±2
LSB 1)
Internal resistance of
reference voltage source
RAREF SR –
tBC / 60
kΩ
tBC in [ns]6)7)
kΩ
tS in [ns]7)8)
pF
7)
CC –
- 0.25
Internal resistance of analog RASRC SR –
source
ADC input capacitance
CAIN CC –
tS / 450
- 0.25
33
1)
TUE is tested at VAREF = 5.0 V, VAGND = 0 V, VDD = 4.9 V. It is guaranteed by design for all other voltages
within the defined voltage range.
If the analog reference supply voltage exceeds the power supply voltage by up to 0.2 V
(i.e. VAREF = VDD = +0.2 V) the maximum TUE is increased to ±3 LSB. This range is not 100% tested.
The specified TUE is guaranteed only if the absolute sum of input overload currents on Port 5 pins (see IOV
specification) does not exceed 10 mA.
During the reset calibration sequence the maximum TUE may be ±4 LSB.
2)
VAIN may exceed VAGND or VAREF up to the absolute maximum ratings. However, the conversion result in
these cases will be X000H or X3FFH, respectively.
3)
The limit values for fBC must not be exceeded when selecting the CPU frequency and the ADCTC setting.
4)
This parameter includes the sample time tS, the time for determining the digital result and the time to load the
result register with the conversion result.
Values for the basic clock tBC depend on programming and can be taken from Table 14.
This parameter depends on the ADC control logic. It is not a real maximum value, but rather a fixum.
5)
During the reset calibration conversions can be executed (with the current accuracy). The time required for
these conversions is added to the total reset calibration time.
6)
During the conversion the ADC’s capacitance must be repeatedly charged or discharged. The internal
resistance of the reference voltage source must allow the capacitance to reach its respective voltage level
within each conversion step. The maximum internal resistance results from the programmed conversion
timing.
7)
Not 100% tested, guaranteed by design and characterization.
Data Sheet
53
V1.0, 2001-05
C164CM
C164SM
8)
During the sample time the input capacitance CAIN can be charged/discharged by the external source. The
internal resistance of the analog source must allow the capacitance to reach its final voltage level within tS.
After the end of the sample time tS, changes of the analog input voltage have no effect on the conversion result.
Values for the sample time tS depend on programming and can be taken from Table 14.
Sample time and conversion time of the C164CM’s A/D Converter are programmable.
Table 14 should be used to calculate the above timings.
The limit values for fBC must not be exceeded when selecting ADCTC.
Table 14
A/D Converter Computation Table
ADCON.15|14
(ADCTC)
A/D Converter
Basic Clock fBC
ADCON.13|12 Sample time
tS
(ADSTC)
00
fCPU / 4
fCPU / 2
fCPU / 16
fCPU / 8
00
01
10
11
01
10
11
tBC × 8
tBC × 16
tBC × 32
tBC × 64
Converter Timing Example:
Assumptions:
Basic clock
Sample time
Conversion time
Data Sheet
fCPU
fBC
tS
tC
= 25 MHz (i.e. tCPU = 40 ns), ADCTC = ‘00’, ADSTC = ‘00’.
= fCPU/4 = 6.25 MHz, i.e. tBC = 160 ns.
= tBC × 8 = 1280 ns.
= tS + 40 tBC + 2 tCPU = (1280 + 6400 + 80) ns = 7.8 µs.
54
V1.0, 2001-05
C164CM
C164SM
Testing Waveforms
2.4 V
1.8 V
1.8 V
Test Points
0.8 V
0.8 V
0.45 V
AC inputs during testing are driven at 2.4 V for a logic ’1’ and 0.45 V for a logic ’0’.
Timing measurements are made at VIH min for a logic ’1’ and VIL max for a logic ’0’.
MCA04414
Figure 14
Input Output Waveforms
VLoad + 0.1 V
VOH - 0.1 V
Timing
Reference
Points
VLoad - 0.1 V
VOL + 0.1 V
For timing purposes a port pin is no longer floating when a 100 mV change from load voltage occurs,
but begins to float when a 100 mV change from the loaded VOH / VOL level occurs ( I OH / I OL = 20 mA).
MCA00763
Figure 15
Data Sheet
Float Waveforms
55
V1.0, 2001-05
C164CM
C164SM
Memory Cycle Variables
The timing tables below use three variables which are derived from the BUSCONx
registers and represent the special characteristics of the programmed memory cycle.
The following table describes, how these variables are to be computed.
Table 15
Memory Cycle Variables
Description
Symbol
Values
ALE Extension
tA
tC
tF
TCL ×
Memory Cycle Time Waitstates
Memory Tristate Time
2TCL × (15 - )
2TCL × (1 - )
Note: Please respect the maximum operating frequency of the respective derivative.
AC Characteristics
Multiplexed Bus
(Operating Conditions apply)
ALE cycle time = 6 TCL + 2tA + tC + tF (120 ns at 25 MHz CPU clock without waitstates)
Parameter
Symbol
Max. CPU Clock
Variable CPU Clock Unit
= 25 MHz
1 / 2TCL = 1 to 25 MHz
min.
max.
min.
max.
ALE high time
t5
CC 10 + tA
–
TCL - 10
+ tA
–
ns
Address setup to ALE
t6
CC 4 + tA
–
TCL - 16
+ tA
–
ns
Address hold after ALE
t7
CC 10 + tA
–
TCL - 10
+ tA
–
ns
ALE falling edge to RD,
WR (with RW-delay)
t8
CC 10 + tA
–
TCL - 10
+ tA
–
ns
ALE falling edge to RD,
WR (no RW-delay)
t9
CC -10 + tA –
-10 + tA
–
ns
Address float after RD,
WR (with RW-delay)
t10 CC –
6
–
6
ns
Address float after RD,
WR (no RW-delay)
t11 CC –
26
–
TCL + 6
ns
RD, WR low time
(with RW-delay)
t12 CC 30 + tC
–
2TCL - 10
+ tC
–
ns
Data Sheet
56
V1.0, 2001-05
C164CM
C164SM
Multiplexed Bus (cont’d)
(Operating Conditions apply)
ALE cycle time = 6 TCL + 2tA + tC + tF (120 ns at 25 MHz CPU clock without waitstates)
Parameter
Symbol
Max. CPU Clock
Variable CPU Clock Unit
= 25 MHz
1 / 2TCL = 1 to 25 MHz
min.
max.
min.
max.
RD, WR low time
(no RW-delay)
t13 CC 50 + tC
–
3TCL - 10
+ tC
–
ns
RD to valid data in
(with RW-delay)
t14 SR –
20 + tC
–
2TCL - 20
+ tC
ns
RD to valid data in
(no RW-delay)
t15 SR –
40 + tC
–
3TCL - 20
+ tC
ns
ALE low to valid data in
t16 SR –
40 + tA
+ tC
–
3TCL - 20
+ tA + tC
ns
Address to valid data in
t17 SR –
50 + 2tA –
+ tC
4TCL - 30
+ 2t A + t C
ns
Data hold after RD
rising edge
t18 SR 0
–
0
–
ns
Data float after RD
t19 SR –
26 + tF
–
2TCL - 14
+ tF
ns
Data valid to WR
t22 CC 20 + tC
–
2TCL - 20
+ tC
–
ns
Data hold after WR
t23 CC 26 + tF
–
2TCL - 14
+ tF
–
ns
ALE rising edge after RD, t25 CC 26 + tF
WR
–
2TCL - 14
+ tF
–
ns
t27 CC 26 + tF
–
2TCL - 14
+ tF
–
ns
Address hold after RD,
WR
Data Sheet
57
V1.0, 2001-05
C164CM
C164SM
t5
t16
t25
ALE
t17
(A10-A8)
t27
Address
t6
t7
t19
Read Cycle
BUS
t18
Address
t8
Data In
t10
t14
RD
t12
Write Cycle
BUS
t23
Address
t8
Data Out
t10
t22
WR
t12
Figure 16
Data Sheet
External Memory Cycle:
Multiplexed Bus, With Read/Write Delay, Normal ALE
58
V1.0, 2001-05
C164CM
C164SM
t5
t16
t25
t17
t27
ALE
(A10-A8)
Address
t6
t7
t19
Read Cycle
BUS
t18
Address
Data In
t10
t8
t14
RD
t12
Write Cycle
BUS
t23
Address
Data Out
t10
t8
t22
WR
t12
Figure 17
External Memory Cycle:
Multiplexed Bus, With Read/Write Delay, Extended ALE
Data Sheet
59
V1.0, 2001-05
C164CM
C164SM
t5
t16
t25
ALE
t17
t27
(A10-A8)
Address
t6
t7
t19
Read Cycle
BUS
t18
Address
t9
Data In
t11
RD
t15
t13
Write Cycle
BUS
t23
Address
t9
Data Out
t11
t22
WR
t13
Figure 18
Data Sheet
External Memory Cycle:
Multiplexed Bus, No Read/Write Delay, Normal ALE
60
V1.0, 2001-05
C164CM
C164SM
t5
t16
t25
t17
t27
ALE
(A10-A8)
Address
t6
t7
t19
Read Cycle
BUS
t18
Address
Data In
t9
t11
RD
t15
t13
Write Cycle
BUS
t23
Address
Data Out
t9
t11
t22
WR
t13
Figure 19
External Memory Cycle:
Multiplexed Bus, No Read/Write Delay, Extended ALE
Data Sheet
61
V1.0, 2001-05
C164CM
C164SM
AC Characteristics
CLKOUT
(Operating Conditions apply)
Parameter
Symbol
t29
t30
CLKOUT high time
CLKOUT low time
t31
CLKOUT rise time
t32
t33
CLKOUT fall time
CLKOUT rising edge to t34
CLKOUT cycle time
Max. CPU Clock
Variable CPU Clock Unit
= 25 MHz
1 / 2TCL = 1 to 25 MHz
min.
max.
min.
max.
CC
40
40
2TCL
2TCL
ns
CC
14
–
TCL - 6
–
ns
CC
10
–
TCL - 10
–
ns
CC
–
4
–
4
ns
CC
–
4
–
4
ns
CC
0 + tA
10 + tA
0 + tA
10 + tA
ns
ALE falling edge
Running cycle1)
t32
CLKOUT
t33
t30
t29
t31
t34
ALE
Command
RD, WR
Figure 20
MUX/Tristate 3)
4)
2)
CLKOUT Timing
Notes
1) Cycle as programmed, including MCTC waitstates (Example shows 0 MCTC WS).
2) The leading edge of the respective command depends on RW-delay.
3)
Multiplexed bus modes have a MUX waitstate added after a bus cycle, and an additional MTTC waitstate may
be inserted here.
For a multiplexed bus with MTTC waitstate this delay is 2 CLKOUT cycles.
4)
The next external bus cycle may start here.
Data Sheet
62
V1.0, 2001-05
C164CM
C164SM
Package Outlines
GPP09297
P-TQFP-64-4
(Plastic Metric Quad Flat Package)
Sorts of Packing
Package outlines for tubes, trays etc. are contained in our
Data Book “Package Information”.
SMD = Surface Mounted Device
Data Sheet
63
Dimensions in mm
V1.0, 2001-05
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