GigaDevice Semiconductor Inc.
GD32F103xx
ARM® Cortex™-M3 32-bit MCU
Datasheet
GD32F103xx Datasheet
Table of Contents
Table of Contents ........................................................................................................... 1
List of Figures ................................................................................................................ 3
List of Tables .................................................................................................................. 4
1. General description ................................................................................................. 5
2. Device overview ....................................................................................................... 6
2.1. Device information .......................................................................................................... 6
2.2. Block diagram ................................................................................................................. 9
2.3. Pinouts and pin assignment ........................................................................................ 11
2.4. Memory map .................................................................................................................. 15
2.5. Clock tree ...................................................................................................................... 19
2.6. Pin definitions ............................................................................................................... 20
2.6.1.
GD32F103Zx LQFP144 pin definitions ................................................................................. 20
2.6.2.
GD32F103Vx LQFP100 pin definitions ................................................................................ 28
2.6.3.
GD32F103Rx LQFP64 pin definitions .................................................................................. 35
2.6.4.
GD32F103Cx LQFP48 pin definitions .................................................................................. 39
2.6.5.
GD32F103Tx QFN36 pin definitions .................................................................................... 42
3. Functional description .......................................................................................... 44
3.1. ARM® Cortex™-M3 core............................................................................................... 44
3.2. On-chip memory ........................................................................................................... 44
3.3. Clock, reset and supply management ......................................................................... 45
3.4. Boot modes ................................................................................................................... 45
3.5. Power saving modes .................................................................................................... 47
3.6. Analog to digital converter (ADC) ................................................................................ 47
3.7. Digital to analog converter (DAC) ................................................................................ 48
3.8. DMA ............................................................................................................................... 48
3.9. General-purpose inputs/outputs (GPIOs) .................................................................... 48
3.10.
Timers and PWM generation ................................................................................. 49
3.11.
Real time clock (RTC) ............................................................................................ 50
3.12.
Inter-integrated circuit (I2C) .................................................................................. 50
3.13.
Serial peripheral interface (SPI) ............................................................................ 51
3.14.
Universal synchronous asynchronous receiver transmitter (USART) ............... 51
1
GD32F103xx Datasheet
3.15.
Inter-IC sound (I2S) ................................................................................................ 51
3.16.
Secure digital input and output card interface (SDIO) ......................................... 52
3.17.
Universal serial bus full-speed device (USBD) .................................................... 52
3.18.
Controller area network (CAN) .............................................................................. 52
3.19.
External memory controller (EXMC) ..................................................................... 52
3.20.
Debug mode ........................................................................................................... 53
3.21.
Package and operation temperature ..................................................................... 53
4. Electrical characteristics ....................................................................................... 54
4.1. Absolute maximum ratings .......................................................................................... 54
4.2. Recommended DC characteristics .............................................................................. 54
4.3. Power consumption ...................................................................................................... 55
4.4. EMC characteristics ...................................................................................................... 60
4.5. Power supply supervisor characteristics.................................................................... 60
4.6. Electrical sensitivity ..................................................................................................... 62
4.7. External clock characteristics...................................................................................... 63
4.8. Internal clock characteristics ....................................................................................... 64
4.9. PLL characteristics ....................................................................................................... 65
4.10.
Memory characteristics ......................................................................................... 65
4.11.
GPIO characteristics .............................................................................................. 65
4.12.
ADC characteristics ............................................................................................... 67
4.13.
DAC characteristics ............................................................................................... 67
4.14.
I2C characteristics ................................................................................................. 67
4.15.
SPI characteristics ................................................................................................. 68
5. Package information.............................................................................................. 69
5.1. QFN package outline dimensions ................................................................................ 69
5.2. LQFP package outline dimensions .............................................................................. 70
6. Ordering Information ............................................................................................. 72
7. Revision History..................................................................................................... 74
2
GD32F103xx Datasheet
List of Figures
Figure 2-1. GD32F103x4/6/8/B block diagram ........................................................................................... 9
Figure 2-2. GD32F103xC/D/E/F/G/I/K block diagram .............................................................................. 10
Figure 2-3. GD32F103Zx LQFP144 pinouts .............................................................................................. 11
Figure 2-4. GD32F103Vx LQFP100 pinouts ............................................................................................. 12
Figure 2-5. GD32F103Rx LQFP64 pinouts .............................................................................................. 13
Figure 2-6. GD32F103Cx LQFP48 pinouts .............................................................................................. 13
Figure 2-7. GD32F103Tx QFN36 pinouts ................................................................................................. 14
Figure 2-8. GD32F103xx clock tree .......................................................................................................... 19
Figure 5-1. QFN package outline.............................................................................................................. 69
Figure 5-2. LQFP package outline............................................................................................................ 70
3
GD32F103xx Datasheet
List of Tables
Table 2-1. GD32F103xx devices features and peripheral list .................................................................. 6
Table 2-2. GD32F103xx devices features and peripheral list (continued) ............................................. 7
Table 2-3. GD32F103xx devices features and peripheral list (continued) ............................................. 8
Table 2-4. GD32F103xx memory map ...................................................................................................... 15
Table 2-5. GD32F103Zx LQFP144 pin definitions ................................................................................... 20
Table 2-6. GD32F103Vx LQFP100 pin definitions ................................................................................... 28
Table 2-7. GD32F103Rx LQFP64 pin definitions .................................................................................... 35
Table 2-8. GD32F103Cx LQFP48 pin definitions .................................................................................... 39
Table 2-9. GD32F103Tx QFN36 pin definitions ....................................................................................... 42
Table 4-1. Absolute maximum ratings ..................................................................................................... 54
Table 4-2. DC operating conditions ......................................................................................................... 54
Table 4-3. Power consumption characteristics (for GD32F103x4/6/8/B devices) ............................... 55
Table 4-4. Power consumption characteristics (for GD32F103xC/D/E/F/G/I/K devices) .................... 56
Table 4-5. Power consumption of peripherals (for GD32F103x4/6/8/B devices) ................................. 57
Table 4-6. Power consumption of peripherals (for GD32F103xC/D/E/F/G/I/K devices) ...................... 58
Table 4-7. EMS characteristics ................................................................................................................. 60
Table 4-8. EMI characteristics .................................................................................................................. 60
Table 4-9. Power supply supervisor characteristics (for GD32F103x4/6/8/B devices) ....................... 60
Table 4-10. Power supply supervisor characteristics (for GD32F103xC/D/E/F/G/I/K devices) .......... 60
Table 4-11. ESD characteristics ............................................................................................................... 62
Table 4-12. Static latch-up characteristics .............................................................................................. 62
Table 4-13. High speed external clock (HXTAL) generated from a crystal/ceramic characteristics . 63
Table 4-14. Low speed external clock (LXTAL) generated from a crystal/ceramic characteristics .. 63
Table 4-15. High speed internal clock (IRC8M) characteristics ............................................................ 64
Table 4-16. Low speed internal clock (IRC40K) characteristics ........................................................... 64
Table 4-17. PLL characteristics ................................................................................................................ 65
Table 4-18. Flash memory characteristics .............................................................................................. 65
Table 4-19. I/O port characteristics (for GD32F103x4/6/8/B devices) ................................................... 65
Table 4-20. I/O port characteristics (for GD32F103xC/D/E/F/G/I/K devices) ........................................ 66
Table 4-21. ADC characteristics ............................................................................................................... 67
Table 4-22. DAC characteristics ............................................................................................................... 67
Table 4-23. I2C characteristics ................................................................................................................. 67
Table 4-24. Standard SPI characteristics ................................................................................................ 68
Table 5-1. QFN package dimensions ....................................................................................................... 69
Table 5-2. LQFP package dimensions ..................................................................................................... 71
Table 6-1. Part ordering code for GD32F103xx devices ........................................................................ 72
Table 7-1. Revision history ....................................................................................................................... 74
4
GD32F103xx Datasheet
1.
General description
The GD32F103xx device is a 32-bit general-purpose microcontroller based on the ARM®
Cortex™-M3 RISC core with best ratio in terms of processing power, reduced power
consumption and peripheral set. The Cortex™-M3 is a next generation processor core which
is tightly coupled with a Nested Vectored Interrupt Controller (NVIC), SysTick timer and
advanced debug support.
The GD32F103xx device incorporates the ARM® Cortex™-M3 32-bit processor core
operating at 108 MHz frequency with Flash accesses zero wait states to obtain maximum
efficiency. It provides up to 3 MB on-chip Flash memory and up to 96 KB SRAM memory. An
extensive range of enhanced I/Os and peripherals connected to two APB buses. The devices
offer up to three 12-bit ADCs, up to two 12-bit DACs, up to ten general 16-bit timers, two basic
timers plus two PWM advanced timer, as well as standard and advanced communication
interfaces: up to three SPIs, two I2Cs, three USARTs, two UARTs, two I2Ss, an USBD, a
CAN and a SDIO.
The device operates from a 2.6 to 3.6 V power supply and available in –40 to +85 °C
temperature range. Several power saving modes provide the flexibility for maximum
optimization between wakeup latency and power consumption, an especially important
consideration in low power applications.
The above features make the GD32F103xx devices suitable for a wide range of applications,
especially in areas such as industrial control, motor drives, power monitor and alarm systems,
consumer and handheld equipment, POS, vehicle GPS, video intercom, PC peripherals and
so on.
5
GD32F103xx Datasheet
2.
Device overview
2.1.
Device information
Table 2-1. GD32F103xx devices features and peripheral list
GD32F103xx
Part Number
T4
T6
T8
TB
C4
C6
C8
CB
R4
R6
R8
RB
V8
VB
Flash (KB)
16
32
64
128
16
32
64
128
16
32
64
128
64
128
SRAM (KB)
6
10
20
20
6
10
20
20
6
10
20
20
20
20
2
2
3
3
2
2
3
3
2
2
3
3
3
3
(1-2)
(1-2)
(1-3)
(1-3)
(1-2)
(1-2)
(1-3)
(1-3)
(1-2)
(1-2)
(1-3)
(1-3)
(1-3)
(1-3)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
(0)
(0)
(0)
(0)
(0)
(0)
(0)
(0)
(0)
(0)
(0)
(0)
(0)
(0)
SysTick
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Watchdog
2
2
2
2
2
2
2
2
2
2
2
2
2
2
RTC
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
3
3
2
2
3
3
3
3
(0-1)
(0-1)
(0-1)
(0-1)
(0-1)
(0-1)
(0-2)
(0-2)
(0-1)
(0-1)
(0-2)
(0-2)
(0-2)
(0-2)
1
1
1
1
1
1
2
2
1
1
2
2
2
2
(0)
(0)
(0)
(0)
(0)
(0)
(0-1)
(0-1)
(0)
(0)
(0-1)
(0-1)
(0-1)
(0-1)
1
1
1
1
1
1
2
2
1
1
2
2
2
2
(0)
(0)
(0)
(0)
(0)
(0)
(0-1)
(0-1)
(0)
(0)
(0-1)
(0-1)
(0-1)
(0-1)
CAN
1
1
1
1
1
1
1
1
1
1
1
1
1
1
USBD
1
1
1
1
1
1
1
1
1
1
1
1
1
1
GPIO
26
26
26
26
37
37
37
37
51
51
51
51
80
80
EXMC
0
0
0
0
0
0
0
0
0
0
0
0
1
1
EXTI
16
16
16
16
16
16
16
16
16
16
16
16
16
16
Units
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Channels
10
10
10
10
10
10
10
10
16
16
16
16
16
16
General
timer(16bit)
Timers
Advanced
timer(16bit)
ADC
Connectivity
USART
I2C
SPI
Package
QFN36
LQFP48
LQFP64
LQFP100
6
GD32F103xx Datasheet
Table 2-2. GD32F103xx devices features and peripheral list (continued)
GD32F103xx
Part Number
RC
RD
RE
RF
RG
RI
RK
VC
VD
VE
VF
VG
VI
VK
Flash (KB)
256 384 512
768 1024 2048 3072 256
384 512 768 1024 2048 3072
SRAM (KB)
48
64
64
96
96
96
96
48
64
64
96
96
96
96
4
4
4
10
10
10
10
4
4
4
10
10
10
10
(1-4)
(1-4)
(1-4)
(1-4,8-13)
(1-4,8-13)
(1-4,8-13)
(1-4,8-13)
(1-4)
(1-4)
(1-4)
(1-4,8-13)
(1-4,8-13)
(1-4,8-13)
(1-4,8-13)
2
2
2
2
2
2
2
2
2
2
2
2
2
2
(0,7)
(0,7)
(0,7)
(0,7)
(0,7)
(0,7)
(0,7)
(0,7)
(0,7)
(0,7)
(0,7)
(0,7)
(0,7)
(0,7)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
(5-6)
(5-6)
(5-6)
(5-6)
(5-6)
(5-6)
(5-6)
(5-6)
(5-6)
(5-6)
(5-6)
(5-6)
(5-6)
(5-6)
Watchdog
2
2
2
2
2
2
2
2
2
2
2
2
2
2
RTC
1
1
1
1
1
1
1
1
1
1
1
1
1
1
USART
3
3
3
3
3
3
3
3
3
3
3
3
3
3
UART
2
2
2
2
2
2
2
2
2
2
2
2
2
2
I2C
2
2
2
2
2
2
2
2
2
2
2
2
2
2
General
timer(16bit)
Advanced
Timers
timer(16bit)
SysTick
Basic
timer(16-
Connectivity
bit)
3
3
3
3
3
3
3
3
3
3
3
3
3
3
(0-2)
(0-2)
(0-2)
(0-2)
(0-2)
(0-2)
(0-2)
(0-2)
(0-2)
(0-2)
(0-2)
(0-2)
(0-2)
(0-2)
CAN
1
1
1
1
1
1
1
1
1
1
1
1
1
1
USBD
1
1
1
1
1
1
1
1
1
1
1
1
1
1
SPI
2
2
2
2
2
2
2
2
2
2
2
2
2
2
(1-2)
(1-2)
(1-2)
(1-2)
(1-2)
(1-2)
(1-2)
(1-2)
(1-2)
(1-2)
(1-2)
(1-2)
(1-2)
(1-2)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
GPIO
51
51
51
51
51
51
51
80
80
80
80
80
80
80
EXMC
0
0
0
0
0
0
0
1
1
1
1
1
1
1
EXTI
16
16
16
16
16
16
16
16
16
16
16
16
16
16
Units
3
3
3
3
3
3
3
3
3
3
3
3
3
3
Channels
16
16
16
16
16
16
16
16
16
16
16
16
16
16
DAC
2
2
2
2
2
2
2
2
2
2
2
2
2
2
I2S
ADC
SDIO
Package
LQFP64
LQFP100
7
GD32F103xx Datasheet
Table 2-3. GD32F103xx devices features and peripheral list (continued)
GD32F103xx
Part Number
ZD
ZE
ZF
ZG
ZI
ZK
Flash (KB)
256
384
512
768
1024
2048
3072
SRAM (KB)
48
64
64
96
96
96
96
General
4
4
4
10
10
10
10
timer(16-bit)
(1-4)
(1-4)
(1-4)
(1-4,8-13)
(1-4,8-13)
(1-4,8-13)
(1-4,8-13)
Advanced
2
2
2
2
2
2
2
timer(16-bit)
(0,7)
(0,7)
(0,7)
(0,7)
(0,7)
(0,7)
(0,7)
SysTick
1
1
1
1
1
1
1
Connectivity
Timers
ZC
Basic timer(16-
2
2
2
2
2
2
2
bit)
(5-6)
(5-6)
(5-6)
(5-6)
(5-6)
(5-6)
(5-6)
Watchdog
2
2
2
2
2
2
2
RTC
1
1
1
1
1
1
1
USART
3
3
3
3
3
3
3
UART
2
2
2
2
2
2
2
I2C
2
2
2
2
2
2
2
3
3
3
3
3
3
3
(0-2)
(0-2)
(0-2)
(0-2)
(0-2)
(0-2)
(0-2)
CAN
1
1
1
1
1
1
1
USBD
1
1
1
1
1
1
1
SPI
2
2
2
2
2
2
2
(1-2)
(1-2)
(1-2)
(1-2)
(1-2)
(1-2)
(1-2)
1
1
1
1
1
1
1
GPIO
112
112
112
112
112
112
112
EXMC
1
1
1
1
1
1
1
EXTI
16
16
16
16
16
16
16
Units
3
3
3
3
3
3
3
Channels
21
21
21
21
21
21
21
2
2
2
2
2
2
2
I2S
ADC
SDIO
DAC
Package
LQFP144
8
GD32F103xx Datasheet
2.2.
Block diagram
Figure 2-1. GD32F103x4/6/8/B block diagram
TPIU
SW/JTAG
Flash
Memory
Controller
Ibus
Flash
Memory
PLL
Fmax: 108MHz
Dbus
FMC
Master
DMA0 7chs
AHB Matrix: Fmax =
108MHz
NVIC
ICode DCode System
ARM Cortex-M3
Processor
Fmax: 108MHz
POR/PDR
Master
EXMC
Slave
Slave
LDO
1.2V
RCU
AHB Peripherals
Slave
Slave
CRC
SRAM
Controller
AHB to APB
Bridge 2
IRC
8MHz
SRAM
HXTAL
4-16MHz
AHB to APB
Bridge 1
LVD
Interrput request
CAN0
USART0
Slave
12-bit
SAR ADC
Slave
WWDGT
ADC0
TIMER1
ADC1
TIMER2
GPIOA
TIMER3
GPIOB
GPIOC
GPIOD
APB1: Fmax = 54MHz
SPI0
APB2: Fmax = 108MHz
Powered By V DDA
Powered By V DDA
SPI1
USART1
USART2
GPIOE
I2C0
TIMER0
I2C1
EXTI
USBD
FWDGT
RTC
9
GD32F103xx Datasheet
Figure 2-2. GD32F103xC/D/E/F/G/I/K block diagram
POR/PDR
TPIU
SW/JTAG
DMA0
7chs
DMA1
5chs
Ibus
Dbus
Master
Master
AHB Matrix: Fmax = 108MHz
NVIC
ICode DCode System
ARM Cortex-M3
Processor
Fmax: 108MHz
PLL
Master
Flash Memory
Controller 1
Flash
Memory
Flash Memory
Controller 2
Flash
Memory
FMC
CRC
Fmax: 108MHz
LDO
1.2V
RCU
IRC
8MHz
AHB Peripherals
Slave
EXMC
HXTAL
4-16MHz
Slave
Slave
SRAM
Controller
SRAM
SDIO
LVD
Slave
Slave
AHB to APB
Bridge 2
AHB to APB
Bridge 1
Powered By V DDA
Interrput request
CAN0
USART0
Slave
SPI0
Slave
WWDGT
TIMER1
ADC0
12-bit
SAR ADC
GPIOB
GPIOC
APB1: Fmax = 54MHz
GPIOA
TIMER3
APB2: Fmax = 108MHz
ADC2
Powered By V DDA
TIMER2
ADC1
TIMER4
TIMER11
TIMER12
TIMER13
GPIOD
SPI1/I2S1
GPIOE
SPI2/I2S2
GPIOF
USART1
GPIOG
USART2
TIMER0
UART3
TIMER7
UART4
TIMER8
I2C0
TIMER9
TIMER5
I2C1
TIMER10
TIMER6
USBD
EXTI
DAC0
DAC1
FWDGT
RTC
: Blocks are available in GD32F103xF/G/I/K devices
10
GD32F103xx Datasheet
2.3.
Pinouts and pin assignment
Figure 2-3. GD32F103Zx LQFP144 pinouts
PA14
PA15
PC10
PC11
PC12
PD0
PD1
PD2
PD3
PD4
PD5
VSS_10
VDD_10
PD6
PD7
PG9
PG10
PG11
PG12
PG13
PG14
VSS_11
VDD_11
PG15
PB4
PB3
PB5
PB6
PB7
BOOT0
PB8
PB9
PE0
PE1
VSS_3
VDD_3
144143142141140139138137136135134133 132131130129128127126125124123122121120 119118117116115114113112111110109
PE2
1
108
PE3
PE4
2
107
VSS_2
3
106
NC
PE5
PE6
4
105
PA13
5
104
PA12
VBAT
6
103
PA11
PC13-TAMPER-RTC
PC14-OSC32IN
7
102
PA10
8
101
PA9
PC15-OSC32OUT
9
100
PA8
PF0
10
99
PC9
PF1
11
98
PC8
PF2
12
97
PC7
PF3
PF4
13
96
PC6
14
95
VDD_9
VDD_2
PF5
15
94
VSS_9
VSS_5
16
93
PG8
VDD_5
17
92
PG7
91
PG6
90
PG5
89
PG4
GigaDevice GD32F103Zx
LQFP144
PF6
18
PF7
19
PF8
20
PF9
21
88
PG3
PF10
22
87
PG2
OSCIN
23
86
PD15
OSCOUT
24
85
PD14
NRST
25
84
VDD_8
PC0
26
83
VSS_8
PC1
27
82
PD13
PC2
28
81
PD12
PC3
VSSA
29
80
PD11
30
79
PD10
VREFVREF+
31
78
PD9
32
77
PD8
VDDA
33
76
PB15
PA0_WKUP
34
75
PB14
PA1
35
74
PB13
PA2
36
73
PB12
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72
VDD_1
VSS_1
PB11
PB10
PE15
PE13
PE14
PE12
PE11
VDD_7
PE10
VSS_7
PE8
PE9
PE7
PG1
PG0
PF15
PF14
VDD_6
PF13
VSS_6
PF12
PB2
PF11
PB1
PC5
PB0
PA7
PC4
PA6
PA5
VDD_4
PA4
VSS_4
PA3
11
GD32F103xx Datasheet
Figure 2-4. GD32F103Vx LQFP100 pinouts
PA14
PA15
PC10
PC11
PC12
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PB4
PB3
PB5
PB6
PB7
BOOT0
PB8
PB9
PE0
PE1
VSS_3
VDD_3
PE2
1
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
75
PE3
PE4
2
74
VSS_2
3
73
NC
PE5
PE6
4
72
PA13
5
71
PA12
VBAT
6
PC13-TAMPER-RTC
PC14-OSC32IN
7
70
69
PA10
8
68
PA9
PC15-OSC32OUT
9
67
PA8
VSS_5
10
66
PC9
VDD_5
11
65
PC8
64
PC7
63
PC6
14
62
PD15
OSCIN
12
GigaDevice GD32F103Vx
LQFP100
VDD_2
PA11
OSCOUT
NRST
PC0
13
15
61
PD14
PC1
16
60
PD13
PC2
PC3
17
59
PD12
18
58
PD11
VSSA
19
57
PD10
VREFVREF+
20
56
PD9
21
55
PD8
VDDA
22
54
PB15
PA0-WKUP
23
53
PB14
PA1
24
52
PB13
PA2
25
51
PB12
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
VSS_1
VDD_1
PB11
PB10
PE15
PE14
PE13
PE11
PE12
PE10
PE9
PE8
PE7
PB2
PB1
PC5
PB0
PA7
PC4
PA6
PA5
PA4
VDD_4
PA3
VSS_4
12
GD32F103xx Datasheet
Figure 2-5. GD32F103Rx LQFP64 pinouts
PA14
PA15
PC10
PC11
PD2
PC12
PB3
PB4
PB5
PB6
PB7
BOOT0
PB8
PB9
VSS_3
VDD_3
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
VBAT
1
48
VDD_2
PC13-TAMPER-RTC
2
47
VSS_2
PC14-OSC32IN
3
46
PA13
PC15-OSC32OUT
PD0-OSCIN
4
45
PA12
5
44
PA11
PD1 OSCOUT
6
43
PA10
NRST
PC0
7
42
PA9
PC1
9
PC2
PC3
VSSA
GigaDevice GD32F103Rx
LQFP64
41
PA8
40
PC9
10
39
PC8
11
38
PC7
12
37
PC6
VDDA
13
36
PB15
PA0-WKUP
14
35
PB14
PA1
15
34
PB13
PA2
16
33
PB12
8
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
PA15
PA14
VDD_1
PB2
VSS_1
PB1
PB11
PB0
PB3
PB10
PC5
PB4
PC4
PA7
PA6
PA5
PA4
VDD_4
VSS_4
PA3
Figure 2-6. GD32F103Cx LQFP48 pinouts
PB5
PB6
PB7
BOOT0
PB8
PB9
VSS_3
VDD_3
48 47 46 45 44 43 42 41 40 39 38 37
VBAT
1
36
VDD_2
PC13-TAMPER-RTC
2
35
VSS_2
PC14-OSC32IN
3
34
PA13
PC15-OSC32OUT
PD0-OSCIN
4
33
PA12
5
32
PA11
PD1-OSCOUT
NRST
VSSA
6
31
PA10
30
PA9
8
29
VDDA
9
28
PA8
PB15
PA0-WKUP
10
27
PB14
PA1
PA2
11
26
PB13
25
PB12
GigaDevice GD32F103Cx
LQFP48
7
12
13 14 15 16 17 18 19 20 21 22 23 24
VSS_1
VDD_1
PB11
PB10
PB2
PB1
PA7
PB0
PA6
PA5
PA4
PA3
13
GD32F103xx Datasheet
Figure 2-7. GD32F103Tx QFN36 pinouts
PA2
PA14
PA1
PA15
PA0-WKUP
PB3
PB4
VDDA
PB5
OSCOUT/PD1
NRST
VSSA
PB6
OSCIN/PD0
PB7
BOOT0
VSS_3
VDD_3
36 35 34 33 32 31 30 29 28
1
27
2
26
VDD_2
3
25
PA13
24
5 GigaDevice GD32F103Tx 23
QFN36
6
22
7
21
PA12
PA9
8
PA8
4
20
9
19
10 11 12 13 14 15 16 17 18
VSS_2
PA11
PA10
VDD_1
VSS_1
PB2
PB1
PB0
PA7
PA6
PA5
PA4
PA3
14
GD32F103xx Datasheet
2.4.
Memory map
Table 2-4. GD32F103xx memory map
Pre-defined
Regions
Bus
External
device
AHB
Address
Peripherals
0xA000 0000 - 0xA000 0FFF
EXMC - SWREG
0x9000 0000 - 0x9FFF FFFF
EXMC - PC CARD
0x7000 0000 - 0x8FFF FFFF
EXMC - NAND
0x6000 0000 - 0x6FFF FFFF
NOR/PSRAM/SRA
External RAM
EXMC -
M
Peripheral
AHB
0x5000 0000 - 0x5003 FFFF
Reserved
0x4008 0000 - 0x4FFF FFFF
Reserved
0x4004 0000 - 0x4007 FFFF
Reserved
0x4002 BC00 - 0x4003 FFFF
Reserved
0x4002 B000 - 0x4002 BBFF
Reserved
0x4002 A000 - 0x4002 AFFF
Reserved
0x4002 8000 - 0x4002 9FFF
Reserved
0x4002 6800 - 0x4002 7FFF
Reserved
0x4002 6400 - 0x4002 67FF
Reserved
0x4002 6000 - 0x4002 63FF
Reserved
0x4002 5000 - 0x4002 5FFF
Reserved
0x4002 4000 - 0x4002 4FFF
Reserved
0x4002 3C00 - 0x4002 3FFF
Reserved
0x4002 3800 - 0x4002 3BFF
Reserved
0x4002 3400 - 0x4002 37FF
Reserved
0x4002 3000 - 0x4002 33FF
CRC
0x4002 2C00 - 0x4002 2FFF
Reserved
0x4002 2800 - 0x4002 2BFF
Reserved
0x4002 2400 - 0x4002 27FF
Reserved
0x4002 2000 - 0x4002 23FF
FMC
0x4002 1C00 - 0x4002 1FFF
Reserved
0x4002 1800 - 0x4002 1BFF
Reserved
0x4002 1400 - 0x4002 17FF
Reserved
0x4002 1000 - 0x4002 13FF
RCU
0x4002 0C00 - 0x4002 0FFF
Reserved
0x4002 0800 - 0x4002 0BFF
Reserved
0x4002 0400 - 0x4002 07FF
DMA1
0x4002 0000 - 0x4002 03FF
DMA0
0x4001 8400 - 0x4001 FFFF
Reserved
0x4001 8000 - 0x4001 83FF
SDIO
15
GD32F103xx Datasheet
Pre-defined
Regions
Bus
APB2
APB1
Address
Peripherals
0x4001 7C00 - 0x4001 7FFF
Reserved
0x4001 7800 - 0x4001 7BFF
Reserved
0x4001 7400 - 0x4001 77FF
Reserved
0x4001 7000 - 0x4001 73FF
Reserved
0x4001 6C00 - 0x4001 6FFF
Reserved
0x4001 6800 - 0x4001 6BFF
Reserved
0x4001 5C00 - 0x4001 67FF
Reserved
0x4001 5800 - 0x4001 5BFF
Reserved
0x4001 5400 - 0x4001 57FF
TIMER10
0x4001 5000 - 0x4001 53FF
TIMER9
0x4001 4C00 - 0x4001 4FFF
TIMER8
0x4001 4800 - 0x4001 4BFF
Reserved
0x4001 4400 - 0x4001 47FF
Reserved
0x4001 4000 - 0x4001 43FF
Reserved
0x4001 3C00 - 0x4001 3FFF
ADC2
0x4001 3800 - 0x4001 3BFF
USART0
0x4001 3400 - 0x4001 37FF
TIMER7
0x4001 3000 - 0x4001 33FF
SPI0
0x4001 2C00 - 0x4001 2FFF
TIMER0
0x4001 2800 - 0x4001 2BFF
ADC1
0x4001 2400 - 0x4001 27FF
ADC0
0x4001 2000 - 0x4001 23FF
GPIOG
0x4001 1C00 - 0x4001 1FFF
GPIOF
0x4001 1800 - 0x4001 1BFF
GPIOE
0x4001 1400 - 0x4001 17FF
GPIOD
0x4001 1000 - 0x4001 13FF
GPIOC
0x4001 0C00 - 0x4001 0FFF
GPIOB
0x4001 0800 - 0x4001 0BFF
GPIOA
0x4001 0400 - 0x4001 07FF
EXTI
0x4001 0000 - 0x4001 03FF
AFIO
0x4000 CC00 - 0x4000 FFFF
Reserved
0x4000 C800 - 0x4000 CBFF
Reserved
0x4000 C400 - 0x4000 C7FF
Reserved
0x4000 C000 - 0x4000 C3FF
Reserved
0x4000 8000 - 0x4000 BFFF
Reserved
0x4000 7C00 - 0x4000 7FFF
Reserved
0x4000 7800 - 0x4000 7BFF
Reserved
0x4000 7400 - 0x4000 77FF
DAC
0x4000 7000 - 0x4000 73FF
PMU
0x4000 6C00 - 0x4000 6FFF
BKP
16
GD32F103xx Datasheet
Pre-defined
Regions
Bus
Address
Peripherals
0x4000 6800 - 0x4000 6BFF
Reserved
0x4000 6400 - 0x4000 67FF
CAN0
0x4000 6000 - 0x4000 63FF
SRAM
Code
AHB
AHB
Shared USBD/CAN
SRAM 512 bytes
0x4000 5C00 - 0x4000 5FFF
USBD
0x4000 5800 - 0x4000 5BFF
I2C1
0x4000 5400 - 0x4000 57FF
I2C0
0x4000 5000 - 0x4000 53FF
UART4
0x4000 4C00 - 0x4000 4FFF
UART3
0x4000 4800 - 0x4000 4BFF
USART2
0x4000 4400 - 0x4000 47FF
USART1
0x4000 4000 - 0x4000 43FF
Reserved
0x4000 3C00 - 0x4000 3FFF
SPI2/I2S2
0x4000 3800 - 0x4000 3BFF
SPI1/I2S1
0x4000 3400 - 0x4000 37FF
Reserved
0x4000 3000 - 0x4000 33FF
FWDGT
0x4000 2C00 - 0x4000 2FFF
WWDGT
0x4000 2800 - 0x4000 2BFF
RTC
0x4000 2400 - 0x4000 27FF
Reserved
0x4000 2000 - 0x4000 23FF
TIMER13
0x4000 1C00 - 0x4000 1FFF
TIMER12
0x4000 1800 - 0x4000 1BFF
TIMER11
0x4000 1400 - 0x4000 17FF
TIMER6
0x4000 1000 - 0x4000 13FF
TIMER5
0x4000 0C00 - 0x4000 0FFF
TIMER4
0x4000 0800 - 0x4000 0BFF
TIMER3
0x4000 0400 - 0x4000 07FF
TIMER2
0x4000 0000 - 0x4000 03FF
TIMER1
0x2007 0000 - 0x3FFF FFFF
Reserved
0x2006 0000 - 0x2006 FFFF
Reserved
0x2003 0000 - 0x2005 FFFF
Reserved
0x2002 0000 - 0x2002 FFFF
Reserved
0x2001 C000 - 0x2001 FFFF
Reserved
0x2001 8000 - 0x2001 BFFF
Reserved
0x2000 0000 - 0x2001 7FFF
SRAM
0x1FFF F810 - 0x1FFF FFFF
Reserved
0x1FFF F800 - 0x1FFF F80F
Option Bytes
0x1FFF B000 - 0x1FFF F7FF
Boot loader
0x1FFF 7A10 - 0x1FFF AFFF
Reserved
0x1FFF 7800 - 0x1FFF 7A0F
Reserved
17
GD32F103xx Datasheet
Pre-defined
Regions
Bus
Address
Peripherals
0x1FFF 0000 - 0x1FFF 77FF
Reserved
0x1FFE C010 - 0x1FFE FFFF
Reserved
0x1FFE C000 - 0x1FFE C00F
Reserved
0x1001 0000 - 0x1FFE BFFF
Reserved
0x1000 0000 - 0x1000 FFFF
Reserved
0x083C 0000 - 0x0FFF FFFF
Reserved
0x0830 0000 - 0x083B FFFF
Reserved
0x0800 0000 - 0x082F FFFF
Main Flash
0x0030 0000 - 0x07FF FFFF
Reserved
0x0000 0000 - 0x002F FFFF
Aliased to Main
Flash or Boot loader
18
GD32F103xx Datasheet
2.5.
Clock tree
Figure 2-8. GD32F103xx clock tree
USBD
Prescaler
÷1,1.5,2,2.5
CK_USBD
48 MHz
(to USBD)
CK_I2S
I2S enable
(to I2S1,2)
CK_SDIO
SCS[1:0]
SDIO enable
(to SDIO)
CK_EXMC
CK_IRC8M
00
8 MHz
IRC8M
1
×2,3,4
…,32
PLL
PLLSEL
PLLMF
0
/2
CK_PLL
10
(to EXMC)
EXMC enable
CK_SYS
108 MHz max
AHB
Prescaler
÷1,2...512
CK_AHB
108 MHz max
HCLK
AHB enable
(to AHB bus,Cortex-M3,SRAM,DMA,FMC)
01
CK_CST
÷8
(to Cortex-M3 SysTick)
Clock
Monitor
/1 or /2
4-16 MHz
HXTAL
FCLK
(free running clock)
TIMER1,2,3,4,5,6,
11,12,13 if(APB1
prescale =1)x1
else x 2
CK_HXTAL
PREDV0
CK_TIMERx
TIMERx
enable
to TIMER1,2,3,4,
5,6,11,12,13
11
/128
32.768 KHz
LXTAL
CK_RTC
01
(to RTC)
APB1
Prescaler
÷1,2,4,8,16
CK_APB1
PCLK1
54 MHz max
to APB1 peripherals
10
RTCSRC[1:0]
40 KHz
IRC40K
CK_OUT0
Peripheral enable
CK_FWDGT
(to FWDGT)
0xx
100
101
110
111
NO CLK
CK_SYS
CK_IRC8M
CK_HXTAL
/2
CK_PLL
TIMER0,7,8,9,10
if(APB2 prescale
=1)x1
else x 2
APB2
Prescaler
÷1,2,4,8,16
CK_TIMERx
TIMERx
enable
to
TIMER0,7,8,9,10
CK_APB2
PCLK2
108 MHz max
Peripheral enable
ADC
Prescaler
÷2,4,8,12,16
to APB2
peripherals
CK_ADCX to ADC0,ADC1,ADC2
14 MHz max
CKOUT0SEL[2:0]
Legend:
HXTAL: High speed external clock
LXTAL: Low speed external clock
IRC8M: High speed internal clock
IRC40K: Low speed internal clock
19
GD32F103xx Datasheet
2.6.
Pin definitions
2.6.1.
GD32F103Zx LQFP144 pin definitions
Table 2-5. GD32F103Zx LQFP144 pin definitions
Pin
I/O
Type(1)
Level(2)
1
I/O
5VT
PE3
2
I/O
5VT
PE4
3
I/O
5VT
PE5
4
I/O
5VT
Pin Name
Pins
PE2
Functions description
Default: PE2
Alternate: TRACECK, EXMC_A23
Default: PE3
Alternate: TRACED0, EXMC_A19
Default: PE4
Alternate:TRACED1, EXMC_A20
Default: PE5
Alternate:TRACED2, EXMC_A21
Remap: TIMER8_CH0(3)
Default: PE6
PE6
5
I/O
5VT
Alternate:TRACED3, EXMC_A22
Remap: TIMER8_CH1(3)
VBAT
Default: VBAT
6
P
7
I/O
8
I/O
9
I/O
PF0
10
I/O
5VT
PF1
11
I/O
5VT
PF2
12
I/O
5VT
PF3
13
I/O
5VT
PF4
14
I/O
5VT
PF5
15
I/O
5VT
VSS_5
16
P
Default: VSS_5
VDD_5
17
P
Default: VDD_5
PF6
18
I/O
PC13TAMPER-
Default: PC13
Alternate: TAMPER-RTC
RTC
PC14OSC32IN
PC15OSC32OUT
Default: PC14
Alternate: OSC32IN
Default: PC15
Alternate: OSC32OUT
Default: PF0
Alternate: EXMC_A0
Default: PF1
Alternate: EXMC_A1
Default: PF2
Alternate: EXMC_A2
Default: PF3
Alternate: EXMC_A3
Default: PF4
Alternate: EXMC_A4
Default: PF5
Alternate: EXMC_A5
Default: PF6
Alternate: ADC2_IN4, EXMC_NIORD
20
GD32F103xx Datasheet
Pin Name
Pins
Pin
I/O
Type(1)
Level(2)
Functions description
Remap: TIMER9_CH0(3)
Default: PF7
PF7
19
I/O
Alternate: ADC2_IN5, EXMC_NREG
Remap: TIMER10_CH0(3)
Default: PF8
PF8
20
I/O
Alternate: ADC2_IN6, EXMC_NIOWR
Remap: TIMER12_CH0(3)
Default: PF9
PF9
21
I/O
Alternate: ADC2_IN7, EXMC_CD
Remap: TIMER13_CH0(3)
Default: PF10
PF10
22
I/O
OSCIN
23
I
OSCOUT
24
O
NRST
25
I/O
PC0
26
I/O
PC1
27
I/O
PC2
28
I/O
PC3
29
I/O
VSSA
30
P
Default: VSSA
VREF-
31
P
Default: VREF-
VREF+
32
P
Default: VREF+
VDDA
33
P
Default: VDDA
PA0-WKUP
34
I/O
Alternate: ADC2_IN8, EXMC_INTR
Default: OSCIN
Remap: PD0
Default: OSCOUT
Remap: PD1
Default: NRST
Default: PC0
Alternate: ADC012_IN10
Default: PC1
Alternate: ADC012_IN11
Default: PC2
Alternate: ADC012_IN12
Default: PC3
Alternate: ADC012_IN13
Default: PA0
Alternate: WKUP, USART1_CTS, ADC012_IN0,
TIMER1_CH0, TIMER1_ETI, TIMER4_CH0, TIMER7_ETI
Default: PA1
PA1
35
I/O
Alternate: USART1_RTS, ADC012_IN1, TIMER1_CH1,
TIMER4_CH1
Default: PA2
PA2
36
I/O
Alternate: USART1_TX, ADC012_IN2, TIMER1_CH2,
TIMER4_CH2, TIMER8_CH0(3)
Default: PA3
PA3
37
I/O
Alternate: USART1_RX, ADC012_IN3, TIMER1_CH3,
TIMER4_CH3, TIMER8_CH1(3)
VSS_4
38
P
Default: VSS_4
21
GD32F103xx Datasheet
Pin Name
Pins
VDD_4
39
Pin
I/O
Type(1)
Level(2)
Functions description
Default: VDD_4
P
Default: PA4
PA4
40
Alternate: SPI0_NSS, USART1_CK, ADC01_IN4,
I/O
DAC_OUT0
Remap:SPI2_NSS, I2S2_WS
PA5
41
Default: PA5
I/O
Alternate: SPI0_SCK, ADC01_IN5, DAC_OUT1
Default: PA6
PA6
42
Alternate: SPI0_MISO, ADC01_IN6, TIMER2_CH0,
I/O
TIMER7_BRKIN, TIMER12_CH0(3)
Remap: TIMER0_BRKIN
Default: PA7
PA7
43
Alternate: SPI0_MOSI, ADC01_IN7, TIMER2_CH1,
I/O
TIMER7_CH0_ON, TIMER13_CH0(3)
Remap: TIMER0_CH0_ON
PC4
44
I/O
PC5
45
I/O
PB0
46
I/O
Default: PC4
Alternate: ADC01_IN14
Default: PC5
Alternate: ADC01_IN15
Default: PB0
Alternate: ADC01_IN8, TIMER2_CH2, TIMER7_CH1_ON
Remap: TIMER0_CH1_ON
Default: PB1
PB1
47
Alternate: ADC01_IN9, TIMER2_CH3, TIMER7_CH2_ON
I/O
Remap: TIMER0_CH2_ON
Default: PB2, BOOT1
PB2
48
I/O
5VT
PF11
49
I/O
5VT
PF12
50
I/O
5VT
VSS_6
51
P
Default: VSS_6
VDD_6
52
P
Default: VDD_6
PF13
53
I/O
5VT
PF14
54
I/O
5VT
PF15
55
I/O
5VT
PG0
56
I/O
5VT
PG1
57
I/O
5VT
Default: PF11
Alternate: EXMC_NIOS16
Default: PF12
Alternate: EXMC_A6
Default: PF13
Alternate: EXMC_A7
Default: PF14
Alternate: EXMC_A8
Default: PF15
Alternate: EXMC_A9
Default: PG0
Alternate: EXMC_A10
Default: PG1
Alternate: EXMC_A11
22
GD32F103xx Datasheet
Pin Name
Pins
Pin
I/O
Type(1)
Level(2)
Functions description
Default: PE7
PE7
58
I/O
5VT
Alternate: EXMC_D4
Remap: TIMER0_ETI
Default: PE8
PE8
59
I/O
5VT
Alternate: EXMC_D5
Remap: TIMER0_CH0_ON
Default: PE9
PE9
60
I/O
5VT
Alternate: EXMC_D6
Remap: TIMER0_CH0
VSS_7
61
P
Default: VSS_7
VDD_7
62
P
Default: VDD_7
PE10
63
I/O
Default: PE10
5VT
Alternate: EXMC_D7
Remap: TIMER0_CH1_ON
Default: PE11
PE11
64
I/O
5VT
Alternate: EXMC_D8
Remap: TIMER0_CH1
Default: PE12
PE12
65
I/O
5VT
Alternate: EXMC_D9
Remap: TIMER0_CH2_ON
Default: PE13
PE13
66
I/O
5VT
Alternate: EXMC_D10
Remap: TIMER0_CH2
Default: PE14
PE14
67
I/O
5VT
Alternate: EXMC_D11
Remap: TIMER0_CH3
Default: PE15
PE15
68
I/O
5VT
Alternate: EXMC_D12
Remap: TIMER0_BRKIN
Default: PB10
PB10
69
I/O
5VT
Alternate: I2C1_SCL, USART2_TX
Remap: TIMER1_CH2
Default: PB11
PB11
70
I/O
5VT
Alternate: I2C1_SDA, USART2_RX
Remap: TIMER1_CH3
VSS_1
71
P
Default: VSS_1
VDD_1
72
P
Default: VDD_1
Default: PB12
PB12
73
I/O
5VT
Alternate: SPI1_NSS, I2C1_SMBA, USART2_CK,
TIMER0_BRKIN, I2S1_WS
Default: PB13
PB13
74
I/O
5VT
Alternate: SPI1_SCK, USART2_CTS, TIMER0_CH0_ON,
I2S1_CK
23
GD32F103xx Datasheet
Pin Name
Pins
Pin
I/O
Type(1)
Level(2)
Functions description
Default: PB14
PB14
75
I/O
5VT
Alternate: SPI1_MISO, USART2_RTS, TIMER0_CH1_ON,
TIMER11_CH0(3)
Default: PB15
PB15
76
I/O
5VT
Alternate: SPI1_MOSI, TIMER0_CH2_ON, I2S1_SD,
TIMER11_CH1(3)
Default: PD8
PD8
77
I/O
5VT
Alternate: EXMC_D13
Remap: USART2_TX
Default: PD9
PD9
78
I/O
5VT
Alternate: EXMC_D14
Remap: USART2_RX
Default: PD10
PD10
79
I/O
5VT
Alternate: EXMC_D15
Remap: USART2_CK
Default: PD11
PD11
80
I/O
5VT
Alternate: EXMC_A16
Remap: USART2_CTS
Default: PD12
PD12
81
I/O
5VT
Alternate: EXMC_A17
Remap: TIMER3_CH0, USART2_RTS
Default: PD13
PD13
82
I/O
5VT
Alternate: EXMC_A18
Remap: TIMER3_CH1
VSS_8
83
P
Default: VSS_8
VDD_8
84
P
Default: VDD_8
PD14
85
I/O
Default: PD14
5VT
Alternate: EXMC_D0
Remap: TIMER3_CH2
Default: PD15
PD15
86
I/O
5VT
Alternate: EXMC_D1
Remap: TIMER3_CH3
PG2
87
I/O
5VT
PG3
88
I/O
5VT
PG4
89
I/O
5VT
PG5
90
I/O
5VT
PG6
91
I/O
5VT
PG7
92
I/O
5VT
Default: PG2
Alternate: EXMC_A12
Default: PG3
Alternate: EXMC_A13
Default: PG4
Alternate: EXMC_A14
Default: PG5
Alternate: EXMC_A15
Default: PG6
Alternate: EXMC_INT1
Default: PG7
24
GD32F103xx Datasheet
Pin Name
Pins
Pin
I/O
Type(1)
Level(2)
Functions description
Alternate: EXMC_INT2
5VT
Default: PG8
PG8
93
I/O
VSS_9
94
P
Default: VSS_9
VDD_9
95
P
Default: VDD_9
Default: PC6
PC6
96
I/O
5VT
Alternate: I2S1_MCK, TIMER7_CH0, SDIO_D6
Remap: TIMER2_CH0
Default: PC7
PC7
97
I/O
5VT
Alternate: I2S2_MCK, TIMER7_CH1, SDIO_D7
Remap: TIMER2_CH1
Default: PC8
PC8
98
I/O
5VT
Alternate: TIMER7_CH2, SDIO_D0
Remap: TIMER2_CH2
Default: PC9
PC9
99
I/O
5VT
Alternate: TIMER7_CH3, SDIO_D1
Remap: TIMER2_CH3
PA8
100
I/O
5VT
PA9
101
I/O
5VT
PA10
102
I/O
5VT
Default: PA8
Alternate: USART0_CK, TIMER0_CH0, CK_OUT0
Default: PA9
Alternate: USART0_TX, TIMER0_CH1
Default: PA10
Alternate: USART0_RX, TIMER0_CH2
Default: PA11
PA11
103
I/O
5VT
Alternate: USART0_CTS, CAN0_RX, USBDM,
TIMER0_CH3
Default: PA12
PA12
104
I/O
5VT
PA13
105
I/O
5VT
NC
106
VSS_2
107
P
Default: VSS_2
VDD_2
108
P
Default: VDD_2
PA14
109
I/O
5VT
PA15
110
I/O
5VT
Alternate: USART0_RTS, CAN0_TX, TIMER0_ETI, USBDP
Default: JTMS, SWDIO
Remap: PA13
-
Default: JTCK, SWCLK
Remap: PA14
Default: JTDI
Alternate: SPI2_NSS, I2S2_WS
Remap: TIMER1_CH0, TIMER1_ETI, PA15, SPI0_NSS
Default: PC10
PC10
111
I/O
5VT
Alternate: UART3_TX, SDIO_D2
Remap: USART2_TX, SPI2_SCK, I2S2_CK
PC11
112
I/O
5VT
Default: PC11
Alternate: UART3_RX, SDIO_D3
25
GD32F103xx Datasheet
Pin Name
Pins
Pin
I/O
Type(1)
Level(2)
Functions description
Remap: USART2_RX, SPI2_MISO
Default: PC12
PC12
113
I/O
5VT
Alternate: UART4_TX, SDIO_CK
Remap: USART2_CK, SPI2_MOSI, I2S2_SD
Default: PD0
PD0
114
I/O
5VT
Alternate: EXMC_D2
Remap: CAN0_RX, OSCIN
Default: PD1
PD1
115
I/O
5VT
Alternate: EXMC_D3
Remap: CAN0_TX, OSCOUT
PD2
116
I/O
5VT
PD3
117
I/O
5VT
Default: PD2
Alternate: TIMER2_ETI, SDIO_CMD, UART4_RX
Default: PD3
Alternate: EXMC_CLK
Remap: USART1_CTS
Default: PD4
PD4
118
I/O
5VT
Alternate: EXMC_NOE
Remap: USART1_RTS
Default: PD5
PD5
119
I/O
5VT
Alternate: EXMC_NWE
Remap: USART1_TX
VSS_10
120
Default: VSS_10
VDD_10
121
Default: VDD_10
Default: PD6
PD6
122
I/O
5VT
Alternate: EXMC_NWAIT
Remap: USART1_RX
Default: PD7
PD7
123
I/O
5VT
Alternate: EXMC_NE0, EXMC_NCE1
Remap: USART1_CK
PG9
124
I/O
5VT
PG10
125
I/O
5VT
PG11
126
I/O
5VT
PG12
127
I/O
5VT
PG13
128
I/O
5VT
PG14
129
I/O
5VT
VSS_11
130
P
Default: PG9
Alternate: EXMC_NE1, EXMC_NCE2
Default: PG10
Alternate: EXMC_NCE3_0, EXMC_NE2
Default: PG11
Alternate: EXMC_NCE3_1
Default: PG12
Alternate: EXMC_NE3
Default: PG13
Alternate: EXMC_A24
Default: PG14
Alternate: EXMC_A25
Default: VSS_11
26
GD32F103xx Datasheet
Pin
I/O
Type(1)
Level(2)
Pin Name
Pins
VDD_11
131
P
PG15
132
I/O
5VT
PB3
133
I/O
5VT
Functions description
Default: VDD_11
Default: PG15
Default: JTDO
Alternate:SPI2_SCK, I2S2_CK
Remap: PB3, TRACESWO, TIMER1_CH1, SPI0_SCK
Default: NJTRST
PB4
134
I/O
5VT
Alternate: SPI2_MISO
Remap: TIMER2_CH0, PB4, SPI0_MISO
Default: PB5
PB5
135
Alternate: I2C0_SMBA, SPI2_MOSI, I2S2_SD
I/O
Remap: TIMER2_CH1, SPI0_MOSI
Default: PB6
PB6
136
I/O
5VT
Alternate: I2C0_SCL, TIMER3_CH0
Remap: USART0_TX
Default: PB7
PB7
137
I/O
5VT
Alternate: I2C0_SDA , TIMER3_CH1, EXMC_NADV
Remap: USART0_RX
BOOT0
138
I
PB8
139
I/O
Default: BOOT0
Default: PB8
5VT
Alternate: TIMER3_CH2, SDIO_D4, TIMER9_CH0(3)
Remap: I2C0_SCL, CAN0_RX
Default: PB9
PB9
140
I/O
5VT
Alternate: TIMER3_CH3, SDIO_D5, TIMER10_CH0(3)
Remap: I2C0_SDA, CAN0_TX
Default: PE0
PE0
141
I/O
5VT
PE1
142
I/O
5VT
VSS_3
143
P
Default: VSS_3
VDD_3
144
P
Default: VDD_3
Alternate: TIMER3_ETI, EXMC_NBL0
Default: PE1
Alternate: EXMC_NBL1
Notes:
(1) Type: I = input, O = output, P = power.
(2) I/O Level: 5VT = 5 V tolerant.
(3) Functions are available in GD32F103ZF/G/I/K devices.
27
GD32F103xx Datasheet
2.6.2.
GD32F103Vx LQFP100 pin definitions
Table 2-6. GD32F103Vx LQFP100 pin definitions
Pin
I/O
Type(1)
Level(2)
1
I/O
5VT
PE3
2
I/O
5VT
PE4
3
I/O
5VT
PE5
4
I/O
5VT
Pin Name
Pins
PE2
Functions description
Default: PE2
Alternate: TRACECK, EXMC_A23
Default: PE3
Alternate: TRACED0, EXMC_A19
Default: PE4
Alternate:TRACED1, EXMC_A20
Default: PE5
Alternate:TRACED2, EXMC_A21
Remap: TIMER8_CH0(3)
Default: PE6
PE6
5
I/O
5VT
Alternate:TRACED3, EXMC_A22
Remap: TIMER8_CH1(3)
VBAT
Default: VBAT
6
P
7
I/O
8
I/O
9
I/O
VSS_5
10
P
Default: VSS_5
VDD_5
11
P
Default: VDD_5
OSCIN
12
I
OSCOUT
13
O
NRST
14
I/O
PC0
15
I/O
PC1
16
I/O
PC2
17
I/O
PC3
18
I/O
VSSA
19
P
Default: VSSA
VREF-
20
P
Default: VREF-
VREF+
21
P
Default: VREF+
PC13TAMPERRTC
PC14OSC32IN
PC15OSC32OUT
Default: PC13
Alternate: TAMPER-RTC
Default: PC14
Alternate: OSC32IN
Default: PC15
Alternate: OSC32OUT
Default: OSCIN
Remap: PD0
Default: OSCOUT
Remap: PD1
Default: NRST
Default: PC0
Alternate: ADC012_IN10(5)
Default: PC1
Alternate: ADC012_IN11(5)
Default: PC2
Alternate: ADC012_IN12(5)
Default: PC3
Alternate: ADC012_IN13(5)
28
GD32F103xx Datasheet
Pin Name
Pins
VDDA
22
Pin
I/O
Type(1)
Level(2)
Functions description
Default: VDDA
P
Default: PA0
PA0-WKUP
23
Alternate: WKUP, USART1_CTS, ADC012_IN0(5),
I/O
TIMER1_CH0, TIMER1_ETI, TIMER4_CH0(4),
TIMER7_ETI(4)
Default: PA1
PA1
24
Alternate: USART1_RTS, ADC012_IN1(5), TIMER1_CH1,
I/O
TIMER4_CH1(4)
Default: PA2
PA2
25
Alternate: USART1_TX, ADC012_IN2(5), TIMER1_CH2,
I/O
TIMER4_CH2(4), TIMER8_CH0(3)
Default: PA3
PA3
26
Alternate: USART1_RX, ADC012_IN3(5), TIMER1_CH3,
I/O
TIMER4_CH3(4), TIMER8_CH1(3)
VSS_4
27
P
Default: VSS_4
VDD_4
28
P
Default: VDD_4
Default: PA4
PA4
29
Alternate: SPI0_NSS, USART1_CK, ADC01_IN4,
I/O
DAC_OUT0(4)
Remap:SPI2_NSS(4), I2S2_WS(4)
PA5
30
Default: PA5
I/O
Alternate: SPI0_SCK, ADC01_IN5, DAC_OUT1(4)
Default: PA6
PA6
31
Alternate: SPI0_MISO, ADC01_IN6, TIMER2_CH0,
I/O
TIMER7_BRKIN(4), TIMER12_CH0(3)
Remap: TIMER0_BRKIN
Default: PA7
PA7
32
Alternate: SPI0_MOSI, ADC01_IN7, TIMER2_CH1,
I/O
TIMER7_CH0_ON(4), TIMER13_CH0(3)
Remap: TIMER0_CH0_ON
PC4
33
I/O
PC5
34
I/O
Default: PC4
Alternate: ADC01_IN14
Default: PC5
Alternate: ADC01_IN15
Default: PB0
PB0
35
Alternate: ADC01_IN8, TIMER2_CH2,
I/O
TIMER7_CH1_ON(4)
Remap: TIMER0_CH1_ON
Default: PB1
PB1
36
Alternate: ADC01_IN9, TIMER2_CH3,
I/O
TIMER7_CH2_ON(4)
Remap: TIMER0_CH2_ON
PB2
37
I/O
5VT
Default: PB2, BOOT1
29
GD32F103xx Datasheet
Pin Name
Pins
Pin
I/O
Type(1)
Level(2)
Functions description
Default: PE7
PE7
38
I/O
5VT
Alternate: EXMC_D4
Remap: TIMER0_ETI
Default: PE8
PE8
39
I/O
5VT
Alternate: EXMC_D5
Remap: TIMER0_CH0_ON
Default: PE9
PE9
40
I/O
5VT
Alternate: EXMC_D6
Remap: TIMER0_CH0
VSS_7
-
P
Default: VSS_7
VDD_7
-
P
Default: VDD_7
PE10
41
I/O
Default: PE10
5VT
Alternate: EXMC_D7
Remap: TIMER0_CH1_ON
Default: PE11
PE11
42
I/O
5VT
Alternate: EXMC_D8
Remap: TIMER0_CH1
Default: PE12
PE12
43
I/O
5VT
Alternate: EXMC_D9
Remap: TIMER0_CH2_ON
Default: PE13
PE13
44
I/O
5VT
Alternate: EXMC_D10
Remap: TIMER0_CH2
Default: PE14
PE14
45
I/O
5VT
Alternate: EXMC_D11
Remap: TIMER0_CH3
Default: PE15
PE15
46
I/O
5VT
Alternate: EXMC_D12
Remap: TIMER0_BRKIN
Default: PB10
PB10
47
I/O
5VT
Alternate: I2C1_SCL, USART2_TX
Remap: TIMER1_CH2
Default: PB11
PB11
48
I/O
5VT
Alternate: I2C1_SDA, USART2_RX
Remap: TIMER1_CH3
VSS_1
49
P
Default: VSS_1
VDD_1
50
P
Default: VDD_1
Default: PB12
PB12
51
I/O
5VT
Alternate: SPI1_NSS, I2C1_SMBA, USART2_CK,
TIMER0_BRKIN, I2S1_WS(4)
Default: PB13
PB13
52
I/O
5VT
Alternate: SPI1_SCK, USART2_CTS, TIMER0_CH0_ON,
I2S1_CK(4)
30
GD32F103xx Datasheet
Pin Name
Pins
Pin
I/O
Type(1)
Level(2)
Functions description
Default: PB14
PB14
53
I/O
5VT
Alternate: SPI1_MISO, USART2_RTS,
TIMER0_CH1_ON, TIMER11_CH0(3)
Default: PB15
PB15
54
I/O
5VT
Alternate: SPI1_MOSI, TIMER0_CH2_ON, I2S1_SD(4),
TIMER11_CH1(3)
Default: PD8
PD8
55
I/O
5VT
Alternate: EXMC_D13
Remap: USART2_TX
Default: PD9
PD9
56
I/O
5VT
Alternate: EXMC_D14
Remap: USART2_RX
Default: PD10
PD10
57
I/O
5VT
Alternate: EXMC_D15
Remap: USART2_CK
Default: PD11
PD11
58
I/O
5VT
Alternate: EXMC_A16
Remap: USART2_CTS
Default: PD12
PD12
59
I/O
5VT
Alternate: EXMC_A17
Remap: TIMER3_CH0, USART2_RTS
Default: PD13
PD13
60
I/O
5VT
Alternate: EXMC_A18
Remap: TIMER3_CH1
Default: PD14
PD14
61
I/O
5VT
Alternate: EXMC_D0
Remap: TIMER3_CH2
Default: PD15
PD15
62
I/O
5VT
Alternate: EXMC_D1
Remap: TIMER3_CH3
Default: PC6
PC6
63
I/O
5VT
Alternate: I2S1_MCK(4), TIMER7_CH0(4), SDIO_D6(4)
Remap: TIMER2_CH0
Default: PC7
PC7
64
I/O
5VT
Alternate: I2S2_MCK(4), TIMER7_CH1(4), SDIO_D7(4)
Remap: TIMER2_CH1
Default: PC8
PC8
65
I/O
5VT
Alternate: TIMER7_CH2(4), SDIO_D0(4)
Remap: TIMER2_CH2
Default: PC9
PC9
66
I/O
5VT
Alternate: TIMER7_CH3(4), SDIO_D1(4)
Remap: TIMER2_CH3
PA8
67
I/O
5VT
Default: PA8
31
GD32F103xx Datasheet
Pin Name
Pins
Pin
I/O
Type(1)
Level(2)
Functions description
Alternate: USART0_CK, TIMER0_CH0, CK_OUT0
PA9
68
I/O
5VT
PA10
69
I/O
5VT
PA11
70
I/O
5VT
Default: PA9
Alternate: USART0_TX, TIMER0_CH1
Default: PA10
Alternate: USART0_RX, TIMER0_CH2
Default: PA11
Alternate: USART0_CTS, CAN0_RX, USBDM,
TIMER0_CH3
Default: PA12
PA12
71
I/O
5VT
Alternate: USART0_RTS, CAN0_TX, TIMER0_ETI,
USBDP
I/O
5VT
Default: JTMS, SWDIO
PA13
72
NC
73
VSS_2
74
P
Default: VSS_2
VDD_2
75
P
Default: VDD_2
PA14
76
I/O
Remap: PA13
-
5VT
Default: JTCK, SWCLK
Remap: PA14
Default: JTDI
PA15
77
I/O
5VT
Alternate: SPI2_NSS(4), I2S2_WS(4)
Remap: TIMER1_CH0, TIMER1_ETI, PA15, SPI0_NSS
Default: PC10
PC10
78
I/O
5VT
Alternate: UART3_TX(4), SDIO_D2(4)
Remap: USART2_TX, SPI2_SCK(4), I2S2_CK(4)
Default: PC11
PC11
79
I/O
5VT
Alternate: UART3_RX(4), SDIO_D3(4)
Remap: USART2_RX, SPI2_MISO(4)
Default: PC12
PC12
80
I/O
5VT
Alternate: UART4_TX(4), SDIO_CK(4)
Remap: USART2_CK, SPI2_MOSI(4), I2S2_SD(4)
Default: PD0
PD0
81
I/O
5VT
Alternate: EXMC_D2
Remap: CAN0_RX, OSCIN
Default: PD1
PD1
82
I/O
5VT
Alternate: EXMC_D3
Remap: CAN0_TX, OSCOUT
PD2
83
I/O
5VT
PD3
84
I/O
5VT
Default: PD2
Alternate: TIMER2_ETI, SDIO_CMD(4), UART4_RX(4)
Default: PD3
Alternate: EXMC_CLK
Remap: USART1_CTS
PD4
85
I/O
5VT
Default: PD4
Alternate: EXMC_NOE
32
GD32F103xx Datasheet
Pin Name
Pins
Pin
I/O
Type(1)
Level(2)
Functions description
Remap: USART1_RTS
Default: PD5
PD5
86
I/O
5VT
Alternate: EXMC_NWE
Remap: USART1_TX
Default: PD6
PD6
87
I/O
5VT
Alternate: EXMC_NWAIT
Remap: USART1_RX
Default: PD7
PD7
88
I/O
5VT
Alternate: EXMC_NE0, EXMC_NCE1
Remap: USART1_CK
Default: JTDO
PB3
89
I/O
5VT
Alternate:SPI2_SCK(4), I2S2_CK(4)
Remap: PB3, TRACESWO, TIMER1_CH1, SPI0_SCK
Default: NJTRST
PB4
90
I/O
5VT
Alternate: SPI2_MISO(4)
Remap: TIMER2_CH0, PB4, SPI0_MISO
Default: PB5
PB5
91
Alternate: I2C0_SMBA, SPI2_MOSI(4), I2S2_SD(4)
I/O
Remap: TIMER2_CH1, SPI0_MOSI
Default: PB6
PB6
92
I/O
5VT
Alternate: I2C0_SCL, TIMER3_CH0
Remap: USART0_TX
Default: PB7
PB7
93
I/O
5VT
Alternate: I2C0_SDA , TIMER3_CH1, EXMC_NADV
Remap: USART0_RX
BOOT0
94
Default: BOOT0
I
Default: PB8
PB8
95
I/O
5VT
Alternate: TIMER3_CH2, SDIO_D4(4), TIMER9_CH0(3)
Remap: I2C0_SCL, CAN0_RX
Default: PB9
PB9
96
I/O
5VT
Alternate: TIMER3_CH3, SDIO_D5(4), TIMER10_CH0(3)
Remap: I2C0_SDA, CAN0_TX
Default: PE0
PE0
97
I/O
5VT
PE1
98
I/O
5VT
VSS_3
99
P
Default: VSS_3
VDD_3
100
P
Default: VDD_3
Alternate: TIMER3_ETI, EXMC_NBL0
Default: PE1
Alternate: EXMC_NBL1
Notes:
(1) Type: I = input, O = output, P = power.
(2) I/O Level: 5VT = 5 V tolerant.
(3) Functions are available in GD32F103VF/G/I/K devices.
33
GD32F103xx Datasheet
(4) Functions are available in GD32F103VC/D/E/F/G/I/K devices.
(5) ADC2 functions are available in GD32F103VC/D/E/F/G/I/K devices.
34
GD32F103xx Datasheet
2.6.3.
GD32F103Rx LQFP64 pin definitions
Table 2-7. GD32F103Rx LQFP64 pin definitions
Pin
I/O
Type(1)
Level(2)
Pin Name
Pins
VBAT
1
P
2
I/O
3
I/O
4
I/O
OSCIN
5
I
OSCOUT
6
O
NRST
7
I/O
PC0
8
I/O
PC1
9
I/O
PC2
10
I/O
PC3
11
I/O
VSSA
12
P
Default: VSSA
VDDA
13
P
Default: VDDA
PC13TAMPERRTC
PC14OSC32IN
PC15OSC32OUT
Functions description
Default: VBAT
Default: PC13
Alternate: TAMPER-RTC
Default: PC14
Alternate: OSC32IN
Default: PC15
Alternate: OSC32OUT
Default: OSCIN
Remap: PD0
Default: OSCOUT
Remap: PD1
Default: NRST
Default: PC0
Alternate: ADC012_IN10(5)
Default: PC1
Alternate: ADC012_IN11(5)
Default: PC2
Alternate: ADC012_IN12(5)
Default: PC3
Alternate: ADC012_IN13(5)
Default: PA0
PA0-WKUP
14
I/O
Alternate: WKUP, USART1_CTS, ADC012_IN0(5),
TIMER1_CH0, TIMER1_ETI, TIMER4_CH0(4),
TIMER7_ETI(4)
Default: PA1
PA1
15
I/O
Alternate: USART1_RTS, ADC012_IN1(5), TIMER1_CH1,
TIMER4_CH1(4)
Default: PA2
PA2
16
I/O
Alternate: USART1_TX, ADC012_IN2(5), TIMER1_CH2,
TIMER4_CH2(4), TIMER8_CH0(3)
Default: PA3
PA3
17
I/O
Alternate: USART1_RX, ADC012_IN3(5), TIMER1_CH3,
TIMER4_CH3(4), TIMER8_CH1(3)
VSS_4
18
P
Default: VSS_4
VDD_4
19
P
Default: VDD_4
35
GD32F103xx Datasheet
Pin Name
Pins
Pin
I/O
Type(1)
Level(2)
Functions description
Default: PA4
PA4
20
Alternate: SPI0_NSS, USART1_CK, ADC01_IN4,
I/O
DAC_OUT0(4)
Remap:SPI2_NSS(4), I2S2_WS(4)
PA5
21
Default: PA5
I/O
Alternate: SPI0_SCK, ADC01_IN5, DAC_OUT1(4)
Default: PA6
PA6
22
Alternate: SPI0_MISO, ADC01_IN6, TIMER2_CH0,
I/O
TIMER7_BRKIN(4), TIMER12_CH0(3)
Remap: TIMER0_BRKIN
Default: PA7
PA7
23
Alternate: SPI0_MOSI, ADC01_IN7, TIMER2_CH1,
I/O
TIMER7_CH0_ON(4), TIMER13_CH0(3)
Remap: TIMER0_CH0_ON
PC4
24
I/O
PC5
25
I/O
PB0
26
I/O
Default: PC4
Alternate: ADC01_IN14
Default: PC5
Alternate: ADC01_IN15
Default: PB0
Alternate: ADC01_IN8, TIMER2_CH2, TIMER7_CH1_ON(4)
Remap: TIMER0_CH1_ON
Default: PB1
PB1
27
Alternate: ADC01_IN9, TIMER2_CH3, TIMER7_CH2_ON(4)
I/O
Remap: TIMER0_CH2_ON
PB2
28
I/O
5VT
PB10
29
I/O
5VT
Default: PB2, BOOT1
Default: PB10
Alternate: I2C1_SCL(6), USART2_TX(6)
Remap: TIMER1_CH2
Default: PB11
5VT
Alternate: I2C1_SDA(6), USART2_RX(6)
PB11
30
I/O
VSS_1
31
P
Default: VSS_1
VDD_1
32
P
Default: VDD_1
PB12
33
I/O
Remap: TIMER1_CH3
Default: PB12
5VT
Alternate: SPI1_NSS(6), I2C1_SMBA(6), USART2_CK(6),
TIMER0_BRKIN, I2S1_WS(4)
Default: PB13
PB13
34
I/O
5VT
Alternate: SPI1_SCK(6), USART2_CTS(6),
TIMER0_CH0_ON, I2S1_CK(4)
Default: PB14
PB14
35
I/O
5VT
Alternate: SPI1_MISO(6), USART2_RTS(6),
TIMER0_CH1_ON, TIMER11_CH0(3)
PB15
36
I/O
5VT
Default: PB15
36
GD32F103xx Datasheet
Pin Name
Pins
Pin
I/O
Type(1)
Level(2)
Functions description
Alternate: SPI1_MOSI(6), TIMER0_CH2_ON, I2S1_SD(4),
TIMER11_CH1(3)
Default: PC6
PC6
37
I/O
5VT
Alternate: I2S1_MCK(4), TIMER7_CH0(4), SDIO_D6(4)
Remap: TIMER2_CH0
Default: PC7
PC7
38
I/O
5VT
Alternate: I2S2_MCK(4), TIMER7_CH1(4), SDIO_D7(4)
Remap: TIMER2_CH1
Default: PC8
PC8
39
I/O
5VT
Alternate: TIMER7_CH2(4), SDIO_D0(4)
Remap: TIMER2_CH2
Default: PC9
PC9
40
I/O
5VT
Alternate: TIMER7_CH3(4), SDIO_D1(4)
Remap: TIMER2_CH3
PA8
41
I/O
5VT
PA9
42
I/O
5VT
PA10
43
I/O
5VT
Default: PA8
Alternate: USART0_CK, TIMER0_CH0, CK_OUT0
Default: PA9
Alternate: USART0_TX, TIMER0_CH1
Default: PA10
Alternate: USART0_RX, TIMER0_CH2
Default: PA11
PA11
44
I/O
5VT
Alternate: USART0_CTS, CAN0_RX, USBDM,
TIMER0_CH3
Default: PA12
PA12
45
I/O
5VT
PA13
46
I/O
5VT
VSS_2
47
P
Default: VSS_2
VDD_2
48
P
Default: VDD_2
PA14
49
I/O
5VT
PA15
50
I/O
5VT
Alternate: USART0_RTS, CAN0_TX, TIMER0_ETI, USBDP
Default: JTMS, SWDIO
Remap: PA13
Default: JTCK, SWCLK
Remap: PA14
Default: JTDI
Alternate: SPI2_NSS(4), I2S2_WS(4)
Remap: TIMER1_CH0, TIMER1_ETI, PA15, SPI0_NSS
Default: PC10
PC10
51
I/O
5VT
Alternate: UART3_TX(4), SDIO_D2(4)
Remap: USART2_TX(6), SPI2_SCK(4), I2S2_CK(4)
Default: PC11
PC11
52
I/O
5VT
Alternate: UART3_RX(4), SDIO_D3(4)
Remap: USART2_RX(6), SPI2_MISO(4)
Default: PC12
PC12
53
I/O
5VT
Alternate: UART4_TX(4), SDIO_CK(4)
Remap: USART2_CK(6), SPI2_MOSI(4), I2S2_SD(4)
37
GD32F103xx Datasheet
Pin Name
Pins
PD2
54
Pin
I/O
Type(1)
Level(2)
I/O
5VT
Functions description
Default: PD2
Alternate: TIMER2_ETI, SDIO_CMD(4), UART4_RX(4)
Default: JTDO
PB3
55
I/O
5VT
Alternate:SPI2_SCK(4), I2S2_CK(4)
Remap: PB3, TRACESWO, TIMER1_CH1, SPI0_SCK
Default: NJTRST
PB4
56
I/O
5VT
Alternate: SPI2_MISO(4)
Remap: TIMER2_CH0, PB4, SPI0_MISO
Default: PB5
PB5
57
Alternate: I2C0_SMBA, SPI2_MOSI(4), I2S2_SD(4)
I/O
Remap: TIMER2_CH1, SPI0_MOSI
Default: PB6
PB6
58
I/O
5VT
Alternate: I2C0_SCL, TIMER3_CH0(6)
Remap: USART0_TX
Default: PB7
PB7
59
I/O
BOOT0
60
I
5VT
Alternate: I2C0_SDA , TIMER3_CH1(6), EXMC_NADV
Remap: USART0_RX
Default: BOOT0
Default: PB8
PB8
61
I/O
5VT
Alternate: TIMER3_CH2(6), SDIO_D4(4), TIMER9_CH0(3)
Remap: I2C0_SCL, CAN0_RX
Default: PB9
PB9
62
I/O
5VT
Alternate: TIMER3_CH3(6), SDIO_D5(4), TIMER10_CH0(3)
Remap: I2C0_SDA, CAN0_TX
VSS_3
63
P
Default: VSS_3
VDD_3
64
P
Default: VDD_3
Notes:
(1) Type: I = input, O = output, P = power.
(2) I/O Level: 5VT = 5 V tolerant.
(3) Functions are available in GD32F103RF/G/I/K devices.
(4) Functions are available in GD32F103RC/D/E/F/G/I/K devices.
(5) ADC2 functions are available in GD32F103RC/D/E/F/G/I/K devices.
(6) Functions are available in GD32F103R8/B/C/D/E/F/G/I/K devices.
38
GD32F103xx Datasheet
2.6.4.
GD32F103Cx LQFP48 pin definitions
Table 2-8. GD32F103Cx LQFP48 pin definitions
Pin
I/O
Type(1)
Level(2)
Pin Name
Pins
VBAT
1
P
2
I/O
3
I/O
4
I/O
OSCIN
5
I
OSCOUT
6
O
NRST
7
I/O
VSSA
8
P
Default: VSSA
VDDA
9
P
Default: VDDA
PA0-WKUP
10
I/O
PC13TAMPERRTC
PC14OSC32IN
PC15OSC32OUT
Functions description
Default: VBAT
Default: PC13
Alternate: TAMPER-RTC
Default: PC14
Alternate: OSC32IN
Default: PC15
Alternate: OSC32OUT
Default: OSCIN
Remap: PD0
Default: OSCOUT
Remap: PD1
Default: NRST
Default: PA0
Alternate: WKUP, USART1_CTS, ADC012_IN0(3),
TIMER1_CH0, TIMER1_ETI, TIMER4_CH0
PA1
11
I/O
PA2
12
I/O
PA3
13
I/O
PA4
14
I/O
PA5
15
I/O
Default: PA1
Alternate: USART1_RTS, ADC012_IN1(3), TIMER1_CH1
Default: PA2
Alternate: USART1_TX, ADC012_IN2(3), TIMER1_CH2
Default: PA3
Alternate: USART1_RX, ADC012_IN3(3), TIMER1_CH3
Default: PA4
Alternate: SPI0_NSS, USART1_CK, ADC01_IN4
Default: PA5
Alternate: SPI0_SCK, ADC01_IN5
Default: PA6
PA6
16
I/O
Alternate: SPI0_MISO, ADC01_IN6, TIMER2_CH0
Remap: TIMER0_BRKIN
Default: PA7
PA7
17
I/O
Alternate: SPI0_MOSI, ADC01_IN7, TIMER2_CH1
Remap: TIMER0_CH0_ON
Default: PB0
PB0
18
I/O
Alternate: ADC01_IN8, TIMER2_CH2
Remap: TIMER0_CH1_ON
PB1
19
I/O
Default: PB1
Alternate: ADC01_IN9, TIMER2_CH3
39
GD32F103xx Datasheet
Pin Name
Pins
Pin
I/O
Type(1)
Level(2)
Functions description
Remap: TIMER0_CH2_ON
PB2
20
I/O
5VT
Default: PB2, BOOT1
Default: PB10
PB10
21
I/O
5VT
Alternate: I2C1_SCL(4), USART2_TX(4)
Remap: TIMER1_CH2
Default: PB11
PB11
22
I/O
5VT
Alternate: I2C1_SDA(4), USART2_RX(4)
Remap: TIMER1_CH3
VSS_1
23
P
Default: VSS_1
VDD_1
24
P
Default: VDD_1
Default: PB12
PB12
25
I/O
5VT
Alternate: SPI1_NSS(4), I2C1_SMBA(4), USART2_CK(4),
TIMER0_BRKIN
Default: PB13
PB13
26
I/O
5VT
Alternate: SPI1_SCK(4), USART2_CTS(4),
TIMER0_CH0_ON
Default: PB14
PB14
27
I/O
5VT
Alternate: SPI1_MISO(4), USART2_RTS(4),
TIMER0_CH1_ON
PB15
28
I/O
5VT
PA8
29
I/O
5VT
PA9
30
I/O
5VT
PA10
31
I/O
5VT
PA11
32
I/O
5VT
Default: PB15
Alternate: SPI1_MOSI(4), TIMER0_CH2_ON
Default: PA8
Alternate: USART0_CK, TIMER0_CH0, CK_OUT0
Default: PA9
Alternate: USART0_TX, TIMER0_CH1
Default: PA10
Alternate: USART0_RX, TIMER0_CH2
Default: PA11
Alternate: USART0_CTS, CAN0_RX, USBDM,
TIMER0_CH3
Default: PA12
PA12
33
I/O
5VT
PA13
34
I/O
5VT
VSS_2
35
P
Default: VSS_2
VDD_2
36
P
Default: VDD_2
PA14
37
I/O
5VT
PA15
38
I/O
5VT
PB3
39
I/O
5VT
Alternate: USART0_RTS, CAN0_TX, TIMER0_ETI, USBDP
Default: JTMS, SWDIO
Remap: PA13
Default: JTCK, SWCLK
Remap: PA14
Default: JTDI
Remap: TIMER1_CH0, TIMER1_ETI, PA15, SPI0_NSS
Default: JTDO
Remap: PB3, TRACESWO, TIMER1_CH1, SPI0_SCK
40
GD32F103xx Datasheet
Pin Name
Pins
PB4
40
Pin
I/O
Type(1)
Level(2)
I/O
5VT
Functions description
Default: NJTRST
Remap: TIMER2_CH0, PB4, SPI0_MISO
Default: PB5
PB5
41
Alternate: I2C0_SMBA
I/O
Remap: TIMER2_CH1, SPI0_MOSI
Default: PB6
PB6
42
I/O
5VT
Alternate: I2C0_SCL, TIMER3_CH0(4)
Remap: USART0_TX
Default: PB7
PB7
43
I/O
5VT
Alternate: I2C0_SDA , TIMER3_CH1(4)
Remap: USART0_RX
BOOT0
44
I
PB8
45
I/O
Default: BOOT0
Default: PB8
5VT
Alternate: TIMER3_CH2(4)
Remap: I2C0_SCL, CAN0_RX
Default: PB9
PB9
46
I/O
5VT
Alternate: TIMER3_CH3(4)
Remap: I2C0_SDA, CAN0_TX
VSS_3
47
P
Default: VSS_3
VDD_3
48
P
Default: VDD_3
Notes:
(1) Type: I = input, O = output, P = power.
(2) I/O Level: 5VT = 5 V tolerant.
(3) ADC2 functions are not available in GD32F103C4/6/8/B devices.
(4) Functions are available in GD32F103C8/B devices.
41
GD32F103xx Datasheet
2.6.5.
GD32F103Tx QFN36 pin definitions
Table 2-9. GD32F103Tx QFN36 pin definitions
Pin
I/O
Type(1)
Level(2)
Pin Name
Pins
Functions description
OSCIN
2
I
OSCOUT
3
O
NRST
4
I/O
VSSA
5
P
Default: VSSA
VDDA
6
P
Default: VDDA
Default: OSCIN
Remap: PD0
Default: OSCOUT
Remap: PD1
Default: NRST
Default: PA0
PA0-WKUP
7
Alternate: WKUP, USART1_CTS, ADC012_IN0(3),
I/O
TIMER1_CH0, TIMER1_ETI
PA1
8
I/O
PA2
9
I/O
PA3
10
I/O
PA4
11
I/O
PA5
12
I/O
PA6
13
I/O
Default: PA1
Alternate: USART1_RTS, ADC012_IN1(3), TIMER1_CH1
Default: PA2
Alternate: USART1_TX, ADC012_IN2(3), TIMER1_CH2
Default: PA3
Alternate: USART1_RX, ADC012_IN3(3), TIMER1_CH3
Default: PA4
Alternate: SPI0_NSS, USART1_CK, ADC01_IN4
Default: PA5
Alternate: SPI0_SCK, ADC01_IN5
Default: PA6
Alternate: SPI0_MISO, ADC01_IN6, TIMER2_CH0
Remap: TIMER0_BRKIN
Default: PA7
PA7
14
Alternate: SPI0_MOSI, ADC01_IN7, TIMER2_CH1
I/O
Remap: TIMER0_CH0_ON
Default: PB0
PB0
15
Alternate: ADC01_IN8, TIMER2_CH2
I/O
Remap: TIMER0_CH1_ON
Default: PB1
PB1
16
Alternate: ADC01_IN9, TIMER2_CH3
I/O
Remap: TIMER0_CH2_ON
5VT
Default: PB2, BOOT1
PB2
17
I/O
VSS_1
18
P
Default: VSS_1
VDD_1
19
P
Default: VDD_1
PA8
20
I/O
5VT
PA9
21
I/O
5VT
Default: PA8
Alternate: USART0_CK, TIMER0_CH0, CK_OUT0
Default: PA9
Alternate: USART0_TX, TIMER0_CH1
42
GD32F103xx Datasheet
Pin
I/O
Type(1)
Level(2)
22
I/O
5VT
PA11
23
I/O
5VT
PA12
24
I/O
5VT
PA13
25
I/O
5VT
VSS_2
26
P
Default: VSS_2
VDD_2
27
P
Default: VDD_2
PA14
28
I/O
5VT
PA15
29
I/O
5VT
PB3
30
I/O
5VT
PB4
31
I/O
5VT
PB5
32
I/O
Pin Name
Pins
PA10
Functions description
Default: PA10
Alternate: USART0_RX, TIMER0_CH2
Default: PA11
Alternate: USART0_CTS, CAN0_RX, USBDM, TIMER0_CH3
Default: PA12
Alternate: USART0_RTS, CAN0_TX, TIMER0_ETI, USBDP
Default: JTMS, SWDIO
Remap: PA13
Default: JTCK, SWCLK
Remap: PA14
Default: JTDI
Remap: TIMER1_CH0, TIMER1_ETI, PA15, SPI0_NSS
Default: JTDO
Remap: PB3, TRACESWO, TIMER1_CH1, SPI0_SCK
Default: NJTRST
Remap: TIMER2_CH0, PB4, SPI0_MISO
Default: PB5
Alternate: I2C0_SMBA
Remap: TIMER2_CH1, SPI0_MOSI
Default: PB6
PB6
33
I/O
5VT
Alternate: I2C0_SCL, TIMER3_CH0(4)
Remap: USART0_TX
Default: PB7
PB7
34
I/O
5VT
Alternate: I2C0_SDA , TIMER3_CH1(4)
Remap: USART0_RX
BOOT0
35
I
Default: BOOT0
VSS_3
36
P
Default: VSS_3
VDD_3
1
P
Default: VDD_3
Notes:
(1) Type: I = input, O = output, P = power.
(2) I/O Level: 5VT = 5 V tolerant.
(3) ADC2 functions are not available in GD32F103T4/6/8/B devices.
(4) Functions are available in GD32F103T8/B devices.
43
GD32F103xx Datasheet
3.
Functional description
3.1.
ARM® Cortex™-M3 core
The Cortex™-M3 processor is the latest generation of ARM® processors for embedded
systems. It has been developed to provide a low-cost platform that meets the needs of MCU
implementation, with a reduced pin count and low-power consumption, while delivering
outstanding computational performance and an advanced system response to interrupts.
32-bit ARM® Cortex™-M3 processor core
Up to 108 MHz operation frequency
Single-cycle multiplication and hardware divider
Integrated Nested Vectored Interrupt Controller (NVIC)
24-bit SysTick timer
The Cortex™-M3 processor is based on the ARMv7 architecture and supports both Thumb
and Thumb-2 instruction sets. Some system peripherals listed below are also provided by
Cortex™-M3:
Internal Bus Matrix connected with I-Code bus, D-Code bus, System bus, Private
Peripheral Bus (PPB) and debug accesses.
3.2.
Nested Vectored Interrupt Controller (NVIC).
Flash Patch and Breakpoint (FPB).
Data Watchpoint and Trace (DWT).
Instrumentation Trace Macrocell (ITM).
Embedded Trace Macrocell (ETM).
Serial Wire JTAG Debug Port (SWJ-DP).
Trace Port Interface Unit (TPIU).
Memory Protection Unit (MPU).
On-chip memory
Up to 3072 Kbytes of Flash memory
Up to 96 Kbytes of SRAM
The ARM® Cortex™-M3 processor is structured in Harvard architecture which can use
separate buses to fetch instructions and load/store data. 3072 Kbytes of inner Flash and 96
Kbytes of inner SRAM at most is available for storing programs and data, both accessed (R/W)
at CPU clock speed with zero wait states. The Table 2-4. GD32F103xx memory map
shows the memory map of the GD32F103xx series of devices, including code, SRAM,
peripheral, and other pre-defined regions.
44
GD32F103xx Datasheet
3.3.
Clock, reset and supply management
Internal 8 MHz factory-trimmed RC and external 4 to 16 MHz crystal oscillator
Internal 40 KHz RC calibrated oscillator and external 32.768 KHz crystal oscillator
Integrated system clock PLL
2.6 to 3.6 V application supply and I/Os
Supply Supervisor: POR (Power On Reset), PDR (Power Down Reset), and low voltage
detector (LVD)
The Clock Control unit provides a range of frequencies and clock functions. These include an
Internal 8M RC oscillator (IRC8M), a High Speed crystal oscillator (HXTAL), a Low Speed
Internal 40K RC oscillator (IRC40K), a Low Speed crystal oscillator (LXTAL), a Phase Lock
Loop (PLL), a HXTAL clock monitor, clock prescalers, clock multiplexers and clock gating
circuitry. The frequency of AHB, APB2 and the APB1 domains can be configured by each
prescaler. The maximum frequency of the AHB, APB2 and APB1 domains is 108 MHz/108
MHz/54 MHz. See Figure 2-8. GD32F103xx clock tree for details.
GD32F10x Reset Control includes the control of three kinds of reset: power reset, system
reset and backup domain reset. The system reset resets the processor core and peripheral
IP components except for the SW-DP controller and the Backup domain. Power-on reset
(POR) and power-down reset (PDR) are always active, and ensures proper operation starting
from/down to 2.6 V. The device remains in reset mode when VDD is below a specified
threshold. The embedded low voltage detector (LVD) monitors the power supply, compares
it to the voltage threshold and generates an interrupt as a warning message for leading the
MCU into security.
Power supply schemes:
VDD range: 2.6 to 3.6 V, external power supply for I/Os and the internal regulator.
Provided externally through VDD pins.
VSSA, VDDA range: 2.6 to 3.6 V, external analog power supplies for ADC, reset blocks,
RCs and PLL. VDDA and VSSA must be connected to VDD and VSS, respectively.
VBAT range: 1.8 to 3.6 V, power supply for RTC, external clock 32 KHz oscillator and
backup registers (through power switch) when VDD is not present.
3.4.
Boot modes
At startup, boot pins are used to select one of three boot options:
Boot from main flash memory (default)
Boot from system memory
Boot from on-chip SRAM
The boot loader is located in the internal boot ROM memory (system memory). It is used to
reprogram the Flash memory by using USART0 (PA9 and PA10), if devices are
GD32F103xF/G/I/K, USART1 (PA2 and PA3) is also available for boot functions. It also can
45
GD32F103xx Datasheet
be used to transfer and update the Flash memory code, the data and the vector table sections.
In default condition, boot from bank 0 of Flash memory is selected. It also supports to boot
from bank 1 of Flash memory by setting a bit in option bytes.
46
GD32F103xx Datasheet
3.5.
Power saving modes
The MCU supports three kinds of power saving modes to achieve even lower power
consumption. They are sleep mode, deep-sleep mode, and standby mode. These operating
modes reduce the power consumption and allow the application to achieve the best balance
between the CPU operating time, speed and power consumption.
Sleep mode
In sleep mode, only clock of Cortex™-M3 is off. All peripherals continue to operate and
any interrupt/event can wake up the system.
Deep-sleep mode
In deep-sleep mode, all clocks in the 1.2V domain are off, and all of IRC8M, HXTAL and
PLLs are disabled. Only the contents of SRAM and registers are retained. Any interrupt
or wakeup event from EXTI lines can wake up the system from the deep-sleep mode
including the 16 external lines, the RTC alarm, the LVD output, USB Wakeup and Ethernet
Wakeup. When exiting the deep-sleep mode, the IRC8M is selected as the system clock.
Standby mode
In standby mode, the whole 1.2V domain is power off, the LDO is shut down, and all of
IRC8M, HXTAL and PLL are disabled. The contents of SRAM and registers (except
Backup registers) are lost. There are four wakeup sources for the Standby mode,
including the external reset from NRST pin, the RTC alarm, the FWDGT reset, and the
rising edge on WKUP pin.
3.6.
Analog to digital converter (ADC)
12-bit SAR ADC
Up to 1 MSPS for 12-bit resolution
Analog input signal voltage range: VSSA to VDDA (2.6 to 3.6 V)
Temperature sensor
Up to three 12-bit multi-channel ADCs are integrated in the device. Each has a total of up to
21 multiplexed external channels. An analog watchdog block can be used to detect the
channels, which are required to remain within a specific threshold window. A configurable
channel management block of analog inputs also can be used to perform conversions in
single, continuous, scan or discontinuous mode.
The ADCs can be triggered from the events generated by the general level 0 timers (TIMERx)
or the advanced timers (TIMER0 and TIMER7) with internal connection. The temperature
sensor generates a voltage that varies linearly with temperature. The analog supply voltage
VDDA can vary from 2.6 V to 3.6 V. The output voltage of temperature sensor is internally
connected to the ADC_IN16 input channel.
47
GD32F103xx Datasheet
3.7.
Digital to analog converter (DAC)
Two 12-bit DACs with independent output channels
8-bit or 12-bit mode in conjunction with the DMA controller
The two 12-bit buffered DACs are used to generate variable analog outputs. The DAC
channels can be triggered by the timer or EXTI with DMA support. In dual DAC channel
operation, conversions could be done independently or simultaneously. The maximum output
value of the DAC is VREF+.
3.8.
DMA
7 channel DMA0 controller and 5 channel DMA1 controller
Peripherals supported: Timers, ADC, SPIs, I2Cs, USARTs, DAC, I2S and SDIO
The direct memory access (DMA) controllers provide a hardware method of transferring data
between peripherals and/or memory without intervention from the CPU, thereby freeing up
bandwidth for other system functions. Three types of access method are supported:
peripheral to memory, memory to peripheral, memory to memory.
Each channel is connected to fixed hardware DMA requests. The priorities of DMA channel
requests are determined by software configuration and hardware channel number. Transfer
size of source and destination are independent and configurable.
3.9.
General-purpose inputs/outputs (GPIOs)
Up to 112 fast GPIOs, all mappable on 16 external interrupt lines
Analog input/output configurable
Alternate function input/output configurable
There are up to 112 general purpose I/O pins (GPIO), named PA0 ~ PA15, PB0 ~ PB15, PC0
~ PC15, PD0 ~ PD15, PE0 ~ PE15, PF0 ~ PF15 and PG0 ~ PG15 for the device to implement
logic input/output functions. Each GPIO port has related control and configuration registers to
satisfy the requirements of specific applications. The external interrupt on the GPIO pins of
the device have related control and configuration registers in the Interrupt/event Controller
Unit (EXTI). The GPIO ports are pin-shared with other alternative functions (AFs) to obtain
maximum flexibility on the package pins. The GPIO pins can be used as alternative functional
pins by configuring the corresponding registers regardless of the AF input or output pins. Each
of the GPIO pins can be configured by software as output (push-pull or open-drain), input,
peripheral alternate function or analog mode. Each GPIO pin can be configured as pull-up,
pull-down or no pull-up/pull-down. All GPIOs are high-current capable except for analog mode.
48
GD32F103xx Datasheet
3.10.
Timers and PWM generation
Up to two 16-bit advanced timer (TIMER0 & TIMER7), ten 16-bit general timers, and two
16-bit basic timer (TIMER5 & TIMER6)
Up to 4 independent channels of PWM, output compare or input capture for each and
external trigger input
16-bit, motor control PWM advanced timer with programmable dead-time generation for
output match
Encoder interface controller with two inputs using quadrature decoder
24-bit SysTick timer down counter
2 watchdog timers (Free watchdog timer and window watchdog timer)
The advanced timer (TIMER0 & TIMER7) can be seen as a three-phase PWM multiplexed
on 6 channels. It has complementary PWM outputs with programmable dead-time generation.
It can also be used as a complete general timer. The 6 independent channels can be used
for
Input capture
Output compare
PWM generation (edge-aligned or center-aligned counting modes)
Single pulse mode output
If configured as a general 16-bit timer, it can be synchronized with external signals or to
interconnect with other general timers together which have the same architecture and
features.
The general timer, known as TIMER1 ~ TIMER4, TIMER8 ~ TIMER10, TIMER11 ~ TIMER13
can be used for a variety of purposes including general timer, input signal pulse width
measurement or output waveform generation such as a single pulse generation or PWM
output, up to 4 independent channels for input capture/output compare. The general timer
also supports an encoder interface with two inputs using quadrature decoder.
The basic timer, known as TIMER5 and TIMER6 are mainly used for DAC trigger generation.
They can also be used as a simple 16-bit time base.
The GD32F103xx have two watchdog peripherals, free watchdog timer and window watchdog
timer. They offer a combination of high safety level, flexibility of use and timing accuracy.
The free watchdog timer consists of an 8-stage prescaler and a 12-bit down-counter, it is
clocked from an independent 40 KHz internal RC and as it operates independently of the
main clock, it can operate in deep-sleep and standby modes. It can be used either as a
watchdog to reset the device when a problem occurs, or as a free-running timer for application
timeout management.
The window watchdog timer is based on a 7-bit down counter that can be set as free-running.
It can be used as a watchdog to reset the device when a problem occurs. It is clocked from
the main clock. It has an early wakeup interrupt capability and the counter can be frozen in
49
GD32F103xx Datasheet
debug mode.
The SysTick timer is dedicated for OS, but could also be used as a standard down counter.
The features are shown below:
3.11.
A 24-bit down counter
Auto reload capability
Maskable system interrupt generation when the counter reaches 0
Programmable clock source
Real time clock (RTC)
32-bit up-counter with a programmable 20-bit prescaler
Alarm function
Interrupt and wake-up event
The real time clock is an independent timer which provides a set of continuously running
counters which can be used with suitable software to provide a clock calendar function, and
provides an alarm interrupt and an expected interrupt. The RTC features a 32-bit
programmable counter for long-term measurement using the compare register to generate an
alarm. A 20-bit prescaler is used for the time base clock and is by default configured to
generate a time base of 1 second from a clock at 32.768 KHz from external crystal oscillator.
3.12.
Inter-integrated circuit (I2C)
Up to two I2C bus interfaces can support both master and slave mode with a frequency
up to 400 KHz
Provide arbitration function, optional PEC (packet error checking) generation and
checking
Supports 7-bit and 10-bit addressing mode and general call addressing mode
The I2C interface is an internal circuit allowing communication with an external I2C interface
which is an industry standard two line serial interface used for connection to external
hardware. These two serial lines are known as a serial data line (SDA) and a serial clock line
(SCL). The I2C module provides transfer rate of up to 100 KHz in standard mode and up to
400 KHz in fast mode. The I2C module also has an arbitration detect function to prevent the
situation where more than one master attempts to transmit data to the I2C bus at the same
time. A CRC-8 calculator is also provided in I2C interface to perform packet error checking
for I2C data.
50
GD32F103xx Datasheet
3.13.
Serial peripheral interface (SPI)
Up to three SPI interfaces with a frequency of up to 18 MHz
Support both master and slave mode
Hardware CRC calculation and transmit automatic CRC error checking
The SPI interface uses 4 pins, among which are the serial data input and output lines (MISO
& MOSI), the clock line (SCK) and the slave select line (NSS). Both SPIs can be served by
the DMA controller. The SPI interface may be used for a variety of purposes, including simplex
synchronous transfers on two lines with a possible bidirectional data line or reliable
communication using CRC checking.
3.14.
Universal synchronous asynchronous receiver transmitter
(USART)
Up to three USARTs and two UARTs with operating frequency up to 6.75 MHz
Supports both asynchronous and clocked synchronous serial communication modes
IrDA SIR encoder and decoder support
LIN break generation and detection
USARTs support ISO 7816-3 compliant smart card interface
The USART (USART0, USART1 and USART2) and UART (UART3 & UART4) are used to
translate data between parallel and serial interfaces, provides a flexible full duplex data
exchange using synchronous or asynchronous transfer. It is also commonly used for RS-232
standard communication. The USART includes a programmable baud rate generator which
is capable of dividing the system clock to produce a dedicated clock for the USART transmitter
and receiver. The USART also supports DMA function for high speed data communication
except UART4.
3.15.
Inter-IC sound (I2S)
Two I2S bus Interfaces with sampling frequency from 8 KHz to 192 KHz
Support either master or slave mode
The Inter-IC sound (I2S) bus provides a standard communication interface for digital audio
applications by 3-wire serial lines. GD32F103xx contain two I2S-bus interfaces that can be
operated with 16/32 bit resolution in master or slave mode, pin multiplexed with SPI1 and
SPI2. The audio sampling frequency from 8 KHz to 192 KHz is supported with less than 0.5%
accuracy error.
51
GD32F103xx Datasheet
3.16.
Secure digital input and output card interface (SDIO)
Support SD2.0/SDIO2.0/MMC4.2 host interface
The Secure Digital Input and Output Card Interface (SDIO) provides access to external SD
memory cards specifications version 2.0, SDIO card specification version 2.0 and multi-media
card system specification version 4.2 with DMA supported. In addition, this interface is also
compliant with CE-ATA digital protocol rev1.1.
3.17.
Universal serial bus full-speed device (USBD)
One full-speed USB Interface with frequency up to 12 Mbit/s
Internal main PLL for USB CLK compliantly
The Universal Serial Bus (USB) is a 4-wire bus that supports communication between one or
more devices. Full-speed peripheral is compliant with the USB 2.0 specification. The device
controller enables 12 Mbit/s data exchange with a USB Host controller. Transaction formatting
is performed by the hardware, including CRC generation and checking. The status of a
completed USB transfer or error condition is indicated by status registers. An interrupt is also
generated if enabled. The dedicated 48 MHz clock is generated from the internal main PLL
(the clock source must use a HSE crystal oscillator) and the operating frequency divided from
APB1 should be 12 MHz above.
3.18.
Controller area network (CAN)
One CAN2.0B interface with communication frequency up to 1 Mbit/s
Internal main PLL for USB CLK compliantly
Controller area network (CAN) is a method for enabling serial communication in field bus. The
CAN protocol has been used extensively in industrial automation and automotive applications.
It can receive and transmit standard frames with 11-bit identifiers as well as extended frames
with 29-bit identifiers. It has three mailboxes for transmission and two FIFOs of three message
deep for reception. It also provides 14 scalable/configurable identifier filter banks for selecting
the incoming messages needed and discarding the others.
3.19.
External memory controller (EXMC)
Supported external memory: SRAM, PSRAM, ROM and NOR-Flash, NAND Flash and
CF card
Up to 16-bit data bus
Support interface with Motorola 6800 and Intel 8080 type LCD directly
External memory controller (EXMC) is an abbreviation of external memory controller. It is
52
GD32F103xx Datasheet
divided in to several sub-banks for external device support, each sub-bank has its own chip
selection signal but at one time, only one bank can be accessed. The EXMC support code
execution from external memory except NAND Flash and CF card. The EXMC also can be
configured to interface with the most common LCD module of Motorola 6800 and Intel 8080
series and reduce the system cost and complexity.
3.20.
Debug mode
Serial wire JTAG debug port (SWJ-DP)
The ARM® SWJ-DP Interface is embedded and is a combined JTAG and serial wire debug
port that enables either a serial wire debug or a JTAG probe to be connected to the target.
3.21.
Package and operation temperature
LQFP144 (GD32F103Zx), LQFP100 (GD32F103Vx), LQFP64 (GD32F103Rx), LQFP48
(GD32F103Cx) and QFN36 (GD32F103Tx)
Operation temperature range: -40°C to +85°C (industrial level)
53
GD32F103xx Datasheet
4.
Electrical characteristics
4.1.
Absolute maximum ratings
The maximum ratings are the limits to which the device can be subjected without permanently
damaging the device. Note that the device is not guaranteed to operate properly at the
maximum ratings. Exposure to the absolute maximum rating conditions for extended periods
may affect device reliability.
Table 4-1. Absolute maximum ratings
Symbol
Parameter
Min
Max
Unit
VDD
External voltage range
VSS - 0.3
VSS + 3.6
V
VDDA
External analog supply voltage
VSSA - 0.3
VSSA + 3.6
V
VBAT
External battery supply voltage
VSS - 0.3
VSS + 3.6
V
Input voltage on 5V tolerant pin
VSS - 0.3
VDD + 4.0
V
Input voltage on other I/O
VSS - 0.3
4.0
V
Maximum current for GPIO pins
—
25
mA
Injected current on 5V tolerant pin
—
±5
mA
Injected current on other I/O
—
±5
mA
∑IINJ
Injected current on all I/O
—
±25
mA
TA
Operating temperature range
-40
+85
°C
TSTG
Storage temperature range
-55
+150
°C
TJ
Maximum junction temperature
—
125
°C
VIN
IIO
IINJ
4.2.
Recommended DC characteristics
Table 4-2. DC operating conditions
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VDD
Supply voltage
—
2.6
3.3
3.6
V
VDDA
Analog supply voltage
Same as VDD
2.6
3.3
3.6
V
VBAT
Battery supply voltage
—
1.8
—
3.6
V
54
GD32F103xx Datasheet
4.3.
Power consumption
The power measurements specified in the tables represent that code with data executing from
on-chip Flash with the following specifications.
Table 4-3. Power consumption characteristics (for GD32F103x4/6/8/B devices)
Symbol
Parameter
Conditions
Min
Typ.
Max
Unit
VDD=VBAT=3.3V, HXTAL=8MHz, System
—
45.5
—
mA
—
33.96
—
mA
-—
30.72
—
mA
—
23.05
—
mA
—
19.82
—
mA
—
5.84
—
mA
—
347.1
—
μA
—
335.9
—
μA
—
9.27
—
μA
—
8.82
—
μA
—
7.52
—
μA
—
13.03
—
μA
—
10.7
—
μA
—
5.79
—
μA
system clock = IRC8M = 8MHz
—
4.5
—
μs
system clock = IRC8M = 8MHz
—
6.5
—
μs
clock=108 MHz, all peripherals enabled
VDD=VBAT=3.3V, HXTAL=8MHz, System
Supply current
clock =108 MHz, all peripherals disabled
(Run mode)
VDD=VBAT=3.3V, HXTAL=8MHz, System
clock =72MHz, all peripherals enabled
VDD=VBAT=3.3V, HXTAL=8MHz, System
Clock =72 MHz, all peripherals disabled
VDD=VBAT=3.3V, HXTAL=8MHz, System
clock =108 MHz, CPU clock off, all
Supply current
peripherals enabled
(Sleep mode)
VDD=VBAT=3.3V, HXTAL=8MHz, System
clock =108 MHz, CPU clock off, all
peripherals disabled
IDD
VDD=VBAT=3.3V, All clock off, regulator in
Supply current
(Deep-Sleep
mode)
run mode, IRC40K on, RTC on, all GPIOs
analog mode
VDD=VBAT=3.3V, All clock off, regulator in
low power mode, IRC40K on, RTC on, all
GPIOs analog mode
VDD=VBAT=3.3V, LDO off, LXTAL off,
IRC40K on, RTC on
Supply current
VDD=VBAT=3.3V, LDO off, LXTAL off,
(Standby mode)
IRC40K on, RTC off
VDD=VBAT=3.3V, LDO off, LXTAL off,
IRC40K off, RTC off
VDD not available, VBAT=3.6V, LDO off,
Battery supply
IBAT
current (Standby
mode)
LXTAL on, IRC40K off, RTC on
VDD not available, VBAT=3.3 V, LDO off,
LXTAL off, IRC40K on, RTC on
VDD not available, VBAT=2.6 V, LDO off,
LXTAL off, IRC40K on, RTC on
tSLEEP
tDEEPSLEEP
Wakeup from
Sleep mode
Wakeup from
deep-sleep
55
GD32F103xx Datasheet
mode（regulator
in run mode）
Wakeup from
deep-sleep
mode（regulator
system clock = IRC8M = 8MHz
—
6.5
—
μs
system clock = IRC8M = 8MHz
—
59.4
—
ms
in low power
mode）
tSTDBY
Wakeup from
Standby mode
Table 4-4. Power consumption characteristics (for GD32F103xC/D/E/F/G/I/K devices)
Symbol
Parameter
Conditions
Min
Typ.
Max
Unit
VDD=VBAT=3.3V, HXTAL=8MHz, System
—
66.32
—
mA
—
41.18
—
mA
-—
44.98
—
mA
—
28.21
—
mA
—
37.91
—
mA
—
7.94
—
mA
—
716.5
—
μA
—
706.8
—
μA
—
9.88
—
μA
—
9.45
—
μA
—
8.17
—
μA
—
12.79
—
μA
—
10.11
—
μA
clock=108 MHz, all peripherals enabled
VDD=VBAT=3.3V, HXTAL=8MHz, System
Supply current
clock =108 MHz, all peripherals disabled
(Run mode)
VDD=VBAT=3.3V, HXTAL=8MHz, System
clock =72MHz, all peripherals enabled
VDD=VBAT=3.3V, HXTAL=8MHz, System
Clock =72 MHz, all peripherals disabled
VDD=VBAT=3.3V, HXTAL=8MHz, System
clock =108 MHz, CPU clock off, all
Supply current
peripherals enabled
(Sleep mode)
VDD=VBAT=3.3V, HXTAL=8MHz, System
clock =108 MHz, CPU clock off, all
peripherals disabled
IDD
VDD=VBAT=3.3V, All clock off, regulator in
Supply current
(Deep-Sleep
mode)
run mode, IRC40K on, RTC on, all GPIOs
analog mode
VDD=VBAT=3.3V, All clock off, regulator in
low power mode, IRC40K on, RTC on, all
GPIOs analog mode
VDD=VBAT=3.3V, LDO off, LXTAL off,
IRC40K on, RTC on
Supply current
VDD=VBAT=3.3V, LDO off, LXTAL off,
(Standby mode)
IRC40K on, RTC off
VDD=VBAT=3.3V, LDO off, LXTAL off,
IRC40K off, RTC off
Battery supply
IBAT
current (Standby
mode)
VDD not available, VBAT=3.6V, LDO off,
LXTAL on, IRC40K off, RTC on
VDD not available, VBAT=3.3 V, LDO off,
LXTAL off, IRC40K on, RTC on
56
GD32F103xx Datasheet
VDD not available, VBAT=2.6 V, LDO off,
—
5.62
—
μA
system clock = IRC8M = 8MHz
—
4.5
—
μs
system clock = IRC8M = 8MHz
—
6
—
μs
system clock = IRC8M = 8MHz
—
6
—
μs
system clock = IRC8M = 8MHz
—
118.8
—
ms
LXTAL off, IRC40K on, RTC on
Wakeup from
tSLEEP
Sleep mode
Wakeup from
deep-sleep
mode（regulator
in run mode）
tDEEPSLEEP
Wakeup from
deep-sleep
mode（regulator
in low power
mode）
tSTDBY
Wakeup from
Standby mode
Table 4-5. Power consumption of peripherals (for GD32F103x4/6/8/B devices)
Typical consumption
Peripheral
APB1
APB2
AHB
at 25℃ (TYP)
TIMER1
0.75
TIMER2
0.79
TIMER3
0.75
SPI1
0.1
USART1
0.18
USART2
0.18
I2C0
0.23
I2C1
0.23
USB
0.46
CAN
0.75
GPIOA
0.3
GPIOB
0.3
GPIOC
0.3
GPIOD
0.3
GPIOE
0.3
ADC0(1)
0.34
ADC1(1)
0.35
TIMER0
1.33
SPI0
0.1
USART0
0.35
EXMC
0.11
Unit
mA
Note:
(1) The condition of ADC measurement is：system clock = fHCLK = 56MHz, fAPB1 = fHCLK/2, fAPB2
= fHCLK, fADC = fAPB2/4, ADCON bit is set to 1.
57
GD32F103xx Datasheet
(2) HXTAL = 8MHz, system clock = fHCLK = 108MHz, fAPB1 = fHCLK/2, fAPB2 = fHCLK.
Table 4-6. Power consumption of peripherals (for GD32F103xC/D/E/F/G/I/K devices)
Typical consumption
Peripheral
APB1
APB2
AHB
at 25℃ (TYP)
TIMER1
0.93
TIMER2
0.88
TIMER3
1.03
TIMER4
0.99
TIMER5
0.34
TIMER6
0.31
TIMER11
0.93
TIMER12
0.78
TIMER13
1.02
SPI1
0.43
SPI2
0.4
USART1
0.36
USART2
0.44
UART3
0.46
USRT4
0.42
I2C0
0.47
I2C1
0.47
USB
0.46
CAN
0.75
DAC(1)
0.29
GPIOA
0.47
GPIOB
0.59
GPIOC
0.63
GPIOD
0.59
GPIOE
0.62
GPIOF
0.65
GPIOG
0.79
ADC0(2)
1.42
ADC1(2)
1.44
ADC2(2)
1.39
TIMER0
1.52
TIMER7
1.53
TIMER8
1.04
TIMER9
0.95
TIMER10
0.97
SPI0
0.22
USART0
0.63
EXMC
1.53
Unit
mA
58
GD32F103xx Datasheet
SDIO
0.61
Note:
(1) The condition of DAC measurement is：DEN0, DEN1 bits in the DAC_CTL register are
set to 1, and the converted value is set to 0x800.
(2) The condition of ADC measurement is：system clock = fHCLK = 56MHz, fAPB1 = fHCLK/2, fAPB2
= fHCLK, fADC = fAPB2/4, ADCON bit is set to 1.
(3) HXTAL = 8MHz, system clock = fHCLK = 108MHz, fAPB1 = fHCLK/2, fAPB2 = fHCLK.
59
GD32F103xx Datasheet
4.4.
EMC characteristics
EMS (electromagnetic susceptibility) includes ESD (Electrostatic discharge, positive and
negative) and FTB (Burst of Fast Transient voltage, positive and negative) testing result is
given in the Table 4-7. EMS characteristics, based on the EMS levels and classes
compliant with IEC 61000 series standard.
Table 4-7. EMS characteristics
Symbol
VESD
Parameter
Conditions
Voltage applied to all device pins to
VDD = 3.3 V, TA = +25 °C
induce a functional disturbance
conforms to IEC 61000-4-2
Fast transient voltage burst applied to
VFTB
induce a functional disturbance through
100 pF on VDD and VSS pins
Level/Class
3B
VDD= 3.3 V, TA = +25 °C
4A
conforms to IEC 61000-4-4
EMI (Electromagnetic Interference) emission testing result is given in the Table 4-8. EMI
characteristics, compliant with IEC 61967-2 standard which specifies the test board and
the pin loading.
Table 4-8. EMI characteristics
Symbol
Parameter
Conditions
4.5.
Peak level
frequency band
Unit
56M
72M
108M
0.1 to 2 MHz
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