GigaDevice Semiconductor GD32E503V-EVAL User manual

GigaDevice Semiconductor Inc.
GD32E503V-EVAL
User Guide
V1.1

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Tables of Contents
TABLES OF CONTENTS ................................................................................................1
LIST OF FIGURES ..........................................................................................................4
LIST OF TABLES ............................................................................................................5
1. SUMMARY ................................................................................................................6
2. FUNCTION PIN ASSIGN...........................................................................................6
3. GETTING STARTED .................................................................................................8
4. HARDWARE LAYOUT OVERVIEW..........................................................................8
4.1. Power supply............................................................................................................... 8
4.2. Boot option .................................................................................................................. 8
4.3. LED............................................................................................................................... 8
4.4. KEY............................................................................................................................... 9
4.5. ADC .............................................................................................................................. 9
4.6. DAC .............................................................................................................................. 9
4.7. USART........................................................................................................................ 10
4.8. I2C............................................................................................................................... 10
4.9. I2S............................................................................................................................... 10
4.10. SPI........................................................................................................................... 11
4.11. NAND ...................................................................................................................... 11
4.12. LCD ......................................................................................................................... 12
4.13. SDIO........................................................................................................................ 12
4.14. USB ......................................................................................................................... 12
4.15. Extension................................................................................................................ 13
4.16. GD-Link................................................................................................................... 13
4.17. MCU......................................................................................................................... 14
5. ROUTINE USE GUIDE............................................................................................15
5.1. GPIO_Running_LED.................................................................................................. 15
5.1.1. DEMO purpose..................................................................................................................... 15
5.1.2. DEMO running result ............................................................................................................ 15
5.2. GPIO_Key_Polling_mode.......................................................................................... 15
5.2.1. DEMO purpose..................................................................................................................... 15
5.2.2. DEMO running result ............................................................................................................ 15
5.3. EXTI_Key_Interrupt_mode........................................................................................ 16
5.3.1. DEMO purpose..................................................................................................................... 16
5.3.2. DEMO running result ............................................................................................................ 16
5.4. USART_Printf............................................................................................................. 16
5.4.1. DEMO purpose..................................................................................................................... 16
5.4.2. DEMO running result ............................................................................................................ 16

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5.5. USART_HyperTerminal_Interrupt............................................................................. 17
5.5.1. DEMO purpose..................................................................................................................... 17
5.5.2. DEMO running result ............................................................................................................ 17
5.6. USART_DMA.............................................................................................................. 17
5.6.1. DEMO purpose..................................................................................................................... 17
5.6.2. DEMO running result ............................................................................................................ 18
5.7. ADC_Temperature_Vrefint........................................................................................ 18
5.7.1. DEMO purpose..................................................................................................................... 18
5.7.2. DEMO running result ............................................................................................................ 18
5.8. ADC0_ADC1_Follow_up_mode................................................................................ 19
5.8.1. DEMO purpose..................................................................................................................... 19
5.8.2. DEMO running result ............................................................................................................ 19
5.9. ADC0_ADC1_Regular_Parallel_mode...................................................................... 20
5.9.1. DEMO purpose..................................................................................................................... 20
5.9.2. DEMO running result ............................................................................................................ 20
5.10. ADC_Channel_Differential_mode ......................................................................... 21
5.10.1. DEMO purpose..................................................................................................................... 21
5.10.2. DEMO running result ............................................................................................................ 21
5.11. DAC_Output_Voltage_Value ................................................................................. 21
5.11.1. DEMO purpose..................................................................................................................... 21
5.11.2. DEMO running result ............................................................................................................ 22
5.12. I2C_EEPROM.......................................................................................................... 22
5.12.1. DEMO purpose..................................................................................................................... 22
5.12.2. DEMO running result ............................................................................................................ 22
5.13. SPI_SPI_Flash........................................................................................................ 23
5.13.1. DEMO purpose..................................................................................................................... 23
5.13.2. DEMO running result ............................................................................................................ 23
5.14. I2S_Audio_Player................................................................................................... 24
5.14.1. DEMO purpose..................................................................................................................... 24
5.14.2. DEMO running result ............................................................................................................ 24
5.15. EXMC_NandFlash................................................................................................... 24
5.15.1. DEMO purpose..................................................................................................................... 24
5.15.2. DEMO running result ............................................................................................................ 24
5.16. EXMC_TouchScreen .............................................................................................. 25
5.16.1. DEMO purpose..................................................................................................................... 25
5.16.2. DEMO running result ............................................................................................................ 25
5.17. SDIO_SDCardTest.................................................................................................. 26
5.17.1. DEMO purpose..................................................................................................................... 26
5.17.2. DEMO running result ............................................................................................................ 26
5.18. RCU_Clock_Out ..................................................................................................... 27
5.18.1. DEMO purpose..................................................................................................................... 27
5.18.2. DEMO running result ............................................................................................................ 27
5.19. CTC_Calibration..................................................................................................... 28
5.19.1. DEMO purpose..................................................................................................................... 28

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5.19.2. DEMO running result ............................................................................................................ 28
5.20. PMU_Sleep_Wakeup.............................................................................................. 28
5.20.1. DEMO purpose..................................................................................................................... 28
5.20.2. DEMO running result ............................................................................................................ 28
5.21. RTC_Calendar ........................................................................................................ 28
5.21.1. DEMO purpose..................................................................................................................... 28
5.21.2. DEMO running result ............................................................................................................ 29
5.22. SHRTIMER_TIMER_Breath_LED........................................................................... 29
5.22.1. DEMO purpose..................................................................................................................... 29
5.22.2. DEMO running result ............................................................................................................ 29
5.23. USBD_Keyboard .................................................................................................... 30
5.23.1. DEMO_Purpose.................................................................................................................... 30
5.23.2. DEMO Running Result ......................................................................................................... 30
5.24. USBD_CDC_ACM ................................................................................................... 30
5.24.1. DEMO Purpose..................................................................................................................... 30
5.24.2. DEMO Running Result ......................................................................................................... 31
6. REVISION HISTORY...............................................................................................32

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List of Figures
Figure 4-1. Schematic diagram of power supply...................................................................................... 8
Figure 4-2. Schematic diagram of boot option......................................................................................... 8
Figure 4-3. Schematic diagram of LED function ...................................................................................... 8
Figure 4-4. Schematic diagram of Key function....................................................................................... 9
Figure 4-5. Schematic diagram of ADC..................................................................................................... 9
Figure 4-6. Schematic diagram of DAC..................................................................................................... 9
Figure 4-7. Schematic diagram of USART .............................................................................................. 10
Figure 4-8. Schematic diagram of I2C ..................................................................................................... 10
Figure 4-9. Schematic diagram of I2S ..................................................................................................... 10
Figure 4-10. Schematic diagram of SPI....................................................................................................11
Figure 4-12. Schematic diagram of NAND ...............................................................................................11
Figure 4-13. Schematic diagram of LCD ................................................................................................. 12
Figure 4-14. Schematic diagram of SDIO................................................................................................ 12
Figure 4-15. Schematic diagram of USB ................................................................................................. 12
Figure 4-16. Schematic diagram of Extension........................................................................................ 13
Figure 4-17. Schematic diagram of GD-Link........................................................................................... 13
Figure 4-18. Schematic diagram of MCU................................................................................................. 14

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List of Tables
Table 2-1. Function pin assignment........................................................................................................... 6
Table 6-1. Revision history ....................................................................................................................... 32

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1. Summary
GD32E503V-EVAL uses GD32E503VET6 as the main controller. It uses GD-Link Mini USB
interface to supply 5V power. Reset, Boot, K2, LED, I2S, I2C-EEPROM, LCD, NAND Flash,
SPI-Flash, SDIO, USB and USART to USB interface are also included. For more details
please refer to GD32E503V-EVAL-Rev1.0 schematic.
2. Function Pin Assign
Table 2-1. Function pin assignment
Function
Pin
Description
LED
PC0
LED1
PC2
LED2
PE0
LED3
PE1
LED4
RESET
K1-Reset
KEY
PA0
KEY_A
PC13
KEY_B
PB14
KEY_C
PC5
KEY_D
PC4
KEY_Cet
ADC
PA1
ADC012_IN1
PA2
ADC012_IN2
DAC
PA4
DAC_OUT0
PA5
DAC_OUT1
USART
PA9
RS232_TX
PA10
RS232_RX
I2C
PB6
I2C0_SCL
PB7
I2C0_SDA
I2S
PB15
I2S_SD
PB13
I2S_CK
PB12
I2S_WS
PC6
I2S_MCK
SPI
PE3
SPIFlash_CS
PA5
SPI0_SCK
PA6
SPI0_MISO
PA7
SPI0_MOSI
NAND Flash
PD14
EXMC_D0
PD15
EXMC_D1
PD0
EXMC_D2
PD1
EXMC_D3

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Function
Pin
Description
PE7
EXMC_D4
PE8
EXMC_D5
PE9
EXMC_D6
PE10
EXMC_D7
PD11
EXMC_A16
PD12
EXMC_A17
PD4
EXMC_NOE
PD5
EXMC_NWE
PD6
EXMC_NWAIT
PD7
Nand_CS
LCD
PD14
EXMC_D0
PD15
EXMC_D1
PD0
EXMC_D2
PD1
EXMC_D3
PE7
EXMC_D4
PE8
EXMC_D5
PE9
EXMC_D6
PE10
EXMC_D7
PE11
EXMC_D8
PE12
EXMC_D9
PE13
EXMC_D10
PE14
EXMC_D11
PE15
EXMC_D12
PD8
EXMC_D13
PD9
EXMC_D14
PD10
EXMC_D15
PE2
EXMC_A23
PD4
EXMC_NOE
PD5
EXMC_NWE
PD7
EXMC_NE0
SDIO
PD2
SDIO_CMD
PC12
SDIO_CLK
PC8
SDIO_DAT0
PC9
SDIO_DAT1
PC10
SDIO_DAT2
PC11
SDIO_DAT3
USBD
PA11
USB_DM
PA12
USB_DP

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3. Getting started
The EVAL board uses GD-Link Mini USB connecter to get power DC +5V, which is the
hardware system normal work voltage. AGD-Link on board is necessary in order to download
and debug programs. Select the correct boot mode and then power on, the LEDPWR will turn
on, which indicates the power supply is OK.
There are Keil version and IAR version of all projects. Keil version of the projects are created
based on Keil MDK-ARM 5.26 uVision5. IAR version of the projects are created based on IAR
Embedded Workbench for ARM 8.32.1. During use, the following points should be noted:
1. If you use Keil uVision5 to open the project. In order to solve the "Device Missing (s)"
problem, you can install GigaDevice.GD32E50x_DFP.1.3.0.pack.
2. If you use IAR to open the project, install IAR_GD32F50x_ADDON_1.3.0.exe to load the
associated files.
4. Hardware layout overview
4.1. Power supply
Figure 4-1. Schematic diagram of power supply
G
1
Vout 2
Vin
34
U2 AMS1117-3.3
E1
16V/10uF,AVX
E2
16V/10uF,AVX
C17
50V/0.1uF
C18
50V/0.1uF
+3V3
LEDPWR
LED0603
R7
470Ω
1
TP1
TP +3V3
+U5V
P1
SMD1210P050TF
+5V
4.2. Boot option
Figure 4-2. Schematic diagram of boot option
R4
10KΩ
1
2
3
JP2
BOOT0
GND
BOOT0
+3V3
R5
10KΩ
1
2
3
JP3
BOOT1
GND
PB2
+3V3
4.3. LED
Figure 4-3. Schematic diagram of LED function

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PC0
PC2
PE0
PE1
LED1
LED0603
LED2
LED0603
LED3
LED0603
LED4
LED0603
R13
470Ω
R14
470Ω
R15
470Ω
R16
470Ω
LED
LED1
LED2
LED3
LED4
GND
4.4. KEY
Figure 4-4. Schematic diagram of Key function
KEY_A
R17
10KΩ
C20
50V/0.1uF
KEY_B KEY_C
+3V3
GND
KEY_A
KEY_B
KEY_C
PA0
PC13
PB14
KEY
A
1
B
2
C
3Com 4
D5
Cet 6
K2
K1-1506SN-01 GND
KEY_D
PC4
PC5KEY_Cet
KEY_D KEY_Cet
KEY_A
KEY_B
KEY_C KEY_D
KEY_Cet R18
10KΩR19
10KΩR26
10KΩR27
10KΩ
C21
50V/0.1uF C22
50V/0.1uF C23
50V/0.1uF C24
50V/0.1uF
4.5. ADC
Figure 4-5. Schematic diagram of ADC
+3V3
GND
ADC
C27
50V/0.01uF
R12
470Ω
PA1VR1
10K
1
TP2
TP ADin
ADC012_IN1
1
2
JP4
HEADER 2
PA2ADC012_IN2 R22 470Ω
C25
50V/0.01uF
GND
DAC_OUT0
4.6. DAC
Figure 4-6. Schematic diagram of DAC

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PA4
DAC
DAC_OUT0
DAC_OUT1
PA5 is anAFIO, please refer to SPI Schematic for right config
PA5
1
2
3
JP7
DAC
GND
1
2
JP4
HEADER 2
PA2ADC012_IN2 R22 470Ω
C25
50V/0.01uF
GND
4.7. USART
Figure 4-7. Schematic diagram of USART
RS232_TX
VBUS 1
DM 2
DP 3
ID 4
GND 5
Shield 6
USB_MiniAB receptacle
J1
Mini_USB
UD+
1
UD-
2
GND
3
RTS#
4
CTS#
5TNOW 6
VCC 7
TXD 8
RXD 9
V3 10
U3
CH340E
D+
D-
+3V3
+3V3
PA9
PA10
C12
50V/0.01uF
C13
50V/0.1uF
D+
D-
C14
50V/4700pF
R8
1MΩ
USART0 To USB
RS232_RX
4.8. I2C
Figure 4-8. Schematic diagram of I2C
A0
1
A1
2
A2
3
GND
4SDA 5
SCL 6
WP 7
VCC 8
U4
AT24C02C-SSHM-T
+3V3
GND
R10
4.7KΩ
R11
4.7KΩI2C0_SCL
I2C0_SDA
I2C
C26
50V/0.1uF GND
PB7
PB6
4.9. I2S
Figure 4-9. Schematic diagram of I2S

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PB15
I2S_WS
I2S_CK
I2S_MCKPC6
PB13
PB12
I2S
C19 50V/0.1uF
GND
E5
16V/10uF,AVX
C15
50V/0.1uF
GND
E6
16V/10uF,AVX
GND
5
4
3
2
1
J3
HeadPhone
E3
16V/3.3uF,AVX
E4
16V/3.3uF,AVX GND
R25
10KΩ
R9
10KΩ
GND
GND
R20
470Ω
R24
470Ω
SDIN
1
SCLK
2
LRCK
3
MCLK
4
VQ
5FILT+ 6
AOUTL 7
GND 8
AOUTR 10
VA 9
U10
CS4344
I2S_WS
I2S_CK
I2S_SD
I2S_SD I2S_MCK
+3V3
4.10. SPI
Figure 4-10. Schematic diagram of SPI
CS
1
SO
2
WP
3
GND
4SI 5
SCLK 6
HOLD 7
VCC 8
U5
GD25Q16
+3V3
GND
SPI0_SCK
SPI0_MOSI
SPI0_MISO
SPIFlash_CS
SPI Flash
PE3SPI0_MISO
SPIFlash_CS
R21
10KΩ
+3V3 C32
50V/0.1uF
GND
PA6SPI0_MOSIPA7
SPI0_SCK
PA51
2
3
JP12
HEADER 3
DAC_OUT1
Short JP12(1,2) for DAC function
Short JP12(2,3) for SPI0 function
4.11. NAND
Figure 4-11. Schematic diagram of NAND
EXMC_D0
EXMC_D1
EXMC_D2
EXMC_D3
EXMC_D4
EXMC_D5
EXMC_D6
EXMC_D7
EXMC_NWE
EXMC_NOE
PD14
PD15
PE7
PE8
PE9
PE10
PD4
PD5
CL
16
AL
17
W
18
R
8
E
9
VSS2 36
VSS1 13
VDD237
VDD112 IO7
44
IO6
43
IO5
42
IO4
41
IO3
32
IO2
31
IO1
30
IO0
29
WP 19
RB 7
U11
GD9FU1G8F2A
EXMC_A16
EXMC_A17
EXMC_NWE
EXMC_NOE
Nand_CS
R64
10KΩ
+3V3 R63 10KΩ+3V3
R66
10KΩ+3V3
EXMC_NWAIT
GND
+3V3
Nand Flash
EXMC_D7
EXMC_D6
EXMC_D5
EXMC_D4
EXMC_D3
EXMC_D2
EXMC_D1
EXMC_D0
C50
50V/0.1uF
C51
50V/0.1uF
+3V3
GND
EXMC_A17
EXMC_A16
EXMC_NWAIT
EXMC_NE0
PD11
PD12
PD6
PD71
2
3
JP24
HEADER 3
LCD_CS
Nand_CS
PD1
PD0

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4.12. LCD
Figure 4-12. Schematic diagram of LCD
1 2
3 4
5 6
7 8
910
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
JP23
LCD
+3V3 GND
EXMC_D0 EXMC_D1
EXMC_D2
EXMC_D4
EXMC_D6
EXMC_D8
EXMC_D10
EXMC_D12
EXMC_D3
EXMC_D5
EXMC_D7
EXMC_D9
EXMC_D11
EXMC_D13
EXMC_D15
EXMC_A23
EXMC_NOE
EXMC_D14
LCD_CS
EXMC_NWE
NRST
LCD
+3V3
EXMC_D0
EXMC_D1
EXMC_D2
EXMC_D3
EXMC_D4
EXMC_D5
EXMC_D6
EXMC_D7
EXMC_D8
EXMC_D9
EXMC_D10
EXMC_D11
EXMC_D12
EXMC_D13
EXMC_D14
EXMC_D15
EXMC_A23
EXMC_NWE
EXMC_NOE
PD14
PD15
PE7
PE8
PE9
PE10
PE11
PE12
PE13
PE14
PE15
PD8
PD9
PD10
PE2
PD4
PD5
BackLight
PE4
SPI0_MISO
SPI0_MOSI
PA5
TP_INT PE5
R65
10KΩ
+3V3
PA6
RS
EXMC_NE0PD7
PA7
1
2
3
JP24
HEADER 3
LCD_CS
Nand_CS
SPI0_SCK
PD1
PD0
4.13. SDIO
Figure 4-13. Schematic diagram of SDIO
R48
10KΩR47 10KΩR46
10KΩ
R45
10KΩ
+3V3
+3V3
E9
16V/10uF,AVX
GND
PD2
PC12
PC8
PC9
PC10
SDIO_DAT3
SDIO_CMD
SDIO_CLK
SDIO_DAT0
SDIO_DAT1
SDIO_DAT2
PC11
SDIO_DAT3
SDIO_CMD
SDIO_CLK
SDIO_DAT0
SDIO_DAT1
SDIO_DAT2D2
1D3
2CMD
3VCC
4CLK
5GND
6D0
7D1
8CD
9JP21
TF_CARD_SOCKET
+3V3 SDIO
4.14. USB
Figure 4-14. Schematic diagram of USB

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GND
R58 22R
R59 22R
PA11
PA12
R62
1MΩ
C49
50V/4700pF
USB_DM
USB_DP
VBUS
1
DM
2
DP
3
ID
4
GND
5
Shield
6
USB_MiniAB receptacle
CN2
Mini_USB
+U5V
R61 1.5KΩ
PD13
4.15. Extension
Figure 4-15. Schematic diagram of Extension
Extension Pin
PE2
PE4
PE6
PC13
PC15
PE3
PE5
VBAT
PC14
PC0
PC1PC2
PC3PA0
PA1PA2
PA3
PA5
PA7
PC5
PB1
PE8
PA4
PA6
PC4
PB0
PB2
PE9
PE7
PE10 PE11
PE12
PB11
PE13
PE15PE14
PB10
GND +3.3V
PB12
PB14
PD8
PD10
PD12
PA11
PC7
PB13
PB15
PD9
PD11
PD13
PA10
PD14 PD15
PC8
PC9PA8
PA9PA12
PA13 GND
PA14
PC10
PC12
PD1
PD3
PD5
PD7
PB8
PB3
PA15
PC11
PD0
PD2
PD4
BOOT0
PD6
PB4
PB5PB6
PB7
PE1
PB9
PE0
1 2
3 4
5 6
7 8
910
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
JP8
15×2P2.54
1 2
3 4
5 6
7 8
910
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
JP9
15×2P2.54
1 2
3 4
5 6
7 8
910
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
JP10
15×2P2.54
1 2
3 4
5 6
7 8
910
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
JP11
15×2P2.54
PC6
GNDGND GND GND
+3.3V
+3.3V
+3.3V
+3.3V
OSC_OUTOSC_IN
NRST
4.16. GD-Link
Figure 4-16. Schematic diagram of GD-Link
L_USB_Ctr
C100
50V/20pF
C102
50V/20pF
Y101
HC-49S-8MHz
GND
L_NRST
+3V3
GND
R102
10KΩ
C103
50V/0.1uF
R104
10KΩ
GND
C105
50V/0.1uF
C106
50V/0.1uF
C107
50V/0.1uF
C108
50V/0.1uF
R101
1MΩL_OSC_IN
L_OSC_OUT
L_OSC_IN
L_OSC_OUT
L_NRST
GND
+3V3
GND
1
2
3
4
JP100
4×1P2.54
+3V3
GND
Reset
L_TMS/IO
L_TDI
L_TDO/SWO
L_TCK/CLK
L_USB_DP
L_SWDIO
L_SWDCK
L_SWDIO
L_SWDCK
+3V3
L_USB_DM
BOOT0
44
NRST
7
OSC_IN/PD0
5
OSC_OUT/PD1
6
PA0-WKUP
10
PA1
11
PA2
12
PA3
13
PA4
14
PA5
15
PA6
16
PA7
17
PA8
29
PA9
30
PA10
31
PA11
32
PA12
33
PA13/JTMS/SWDIO
34
PA14/JTCK/SWCLK
37
PA15/JTDI
38
PB018
PB119
PB2/BOOT1 20
PB3/JTDO 39
PB4/JNTRST 40
PB541
PB642
PB743
PB845
PB946
PB10 21
PB11 22
PB12 25
PB13 26
PB14 27
PB15 28
PC13-TAMPER-RTC 2
PC14-OSC32_IN 3
PC15-OSC32_OUT 4
VBAT
1
VDD_1
24
VDD_2
36
VDD_3
48
VDDA
9
VSS_1 23
VSS_2 35
VSS_3 47
VSSA 8
U0
GD32F103C8T6
L_TReset
L_LED1
L_LED2
L_LED1 LED0603
L_LED2 LED0603
R103
10KΩGND
R109 470Ω
R110 470ΩGND
GND
R105 22R
R106 22R
R108
1MΩC104
50V/4700pF
L_USB_DM
L_USB_DP
GND
R107 1.5KΩL_USB_Ctr
VCC 1
D- 2
D+ 3
ID 4
GND 5
SHELL 6
CN100
Mini_USB
+U5V

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4.17. MCU
Figure 4-17. Schematic diagram of MCU
PA4
PA5
PA6
PA7
PA0
PA1
PA3
PA2
PA11
PA12
PA9
PA10
PA15
PA13
PA14
PA8
PB5
PB6
PB7
PB1
PB2
PB3
PB0
PB4
PB12
PB13
PB14
PB15
PB10
PB11
PB8
PB9
PC4
PC5
PC6
PC7
PC0
PC1
PC3
PC2
PC12
PC13
PC14
PC15
PC8
PC9
PC11
PC10
PD0
PD1
PD3
PD4
PD5
PD6
PD2
PD7
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
PE14
PE15
PE9
PE8
PE11
PE10
PE12
PE13
C1
50V/20pF
C2
50V/20pF
Y1
HC-49S-G20SSA-8MHz
GND
NRST
K1
K-1102B
+3V3
GND
R6
10KΩ
C16
50V/0.1uF
GND
C3
50V/10pF
C4
50V/10pF
Y2
DT-26-C06N-32.768KHz
C5
50V/0.1uF
C6
50V/0.1uF
C7
50V/0.1uF
C8
50V/0.1uF
C9
50V/0.1uF
1 2
3 4
5 6
7 8
910
11 12
13 14
15 16
17 18
19 20
JP1
JTAG
+3V3
GND
NRST
GND
RP1
表贴排阻
R2 10KΩ
+3V3
R3
1MΩ
JNTRST
JTDI
JTMS/SWDIO
JTCK/SWDCLK
JTDO
RTCK
R1 10KΩ
OSC32_IN
OSC32_OUT
PC14
PC15
OSC_IN
OSC_OUT
GND
+3.3V
C11
50V/0.1uF
C10
50V/0.1uF
+3.3V GND
1 2 3
JP0
Vbat select
VBAT
12 BT1
Battety
GND +3V3
+3.3V
+3V3
BOOT0
VBAT
+3.3V
GND
PB4
PA15
PA13
PA14
PB3
JNTRST
JTDI
JTMS/SWDIO
JTCK/SWDCLK
JTDO
L_TMS/IO
L_TCK/CLK
L_TDO/SWO
L_TDI
L_TReset
GDLink JTAG
NRST
BOOT0
94
NC
73
NRST
14
OSC_IN
12
OSC_OUT
13
PA0-WKUP
23
PA1
24
PA2
25
PA3
26
PA4
29
PA5
30
PA6
31
PA7
32
PA8
67
PA9
68
PA10
69
PA11
70
PA12
71
PA13/JTMS/SWDIO
72
PA14/JTCK/SWCLK
76
PA15/JTDI
77
PB0
35
PB1
36
PB2/BOOT1
37
PB3/JTDO
89
PB4/JNTRST
90
PB5
91
PB6
92
PB7
93
PB8
95
PB9
96
PB10
47
PB11
48
PB12
51
PB13
52
PB14
53
PB15
54
PC015
PC116
PC217
PC318
PC433
PC534
PC663
PC764
PC865
PC966
PC10 78
PC11 79
PC12 80
PC13-TAMPER-RTC 7
PC14-OSC32_IN 8
PC15-OSC32_OUT 9
PD081
PD182
PD283
PD384
PD485
PD586
PD687
PD788
PD855
PD956
PD10 57
PD11 58
PD12 59
PD13 60
PD14 61
PD15 62
PE097
PE198
PE21
PE32
PE43
PE54
PE65
PE738
PE839
PE940
PE10 41
PE11 42
PE12 43
PE13 44
PE14 45
PE15 46
VDD_1
50
VDD_2
75
VDD_3
100
VDD_4
28
VDD_5
11
VDDA
22
VREF-
20
VREF+
21
VSS_1 49
VSS_2 74
VSS_3 99
VSS_4 27
VSS_5 10
VSSA 19
VBAT
6
U1
GD32E503VET6
NRST
OSC_IN
OSC_OUT

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5. Routine use guide
5.1. GPIO_Running_LED
5.1.1. DEMO purpose
This demo includes the following functions of GD32 MCU:
Learn to use GPIO control the LED
Learn to use SysTick to generate 1ms delay
GD32E503V-EVAL-V1.0 board has five user keys and four LEDs. The keys are KEY_A,
KEY_B, KEY_C, KEY_D and KEY_Cet. The LEDs are controlled by GPIO.
This demo will show how to light the LEDs.
5.1.2. DEMO running result
Download the program < 01_GPIO_Running_LED > to the EVAL board, four LEDs can light
cycles.
5.2. GPIO_Key_Polling_mode
5.2.1. DEMO purpose
This demo includes the following functions of GD32 MCU:
Learn to use GPIO control the LED and the KEY
Learn to use SysTick to generate 1ms delay
GD32E503V-EVAL-V1.0 board has five user keys and four LEDs. The keys are KEY_A,
KEY_B, KEY_C, KEY_D, and KEY_Cet. The LEDs are controlled by GPIO.
This demo will show how to use the KEY_Ato control the LED2.When press down the KEY_A,
it will check the input value of the IO port. If the value is 0 and will wait for 100ms. Check the
input value of the IO port again. If the value still is 0, it indicates that the button is pressed
successfully and toggle LED2.
5.2.2. DEMO running result
Download the program < 02_GPIO_Key_Polling_mode > to the EVAL board, press down the
KEY_A, LED2 will be turned on. Press down the KEY_A again, LED2 will be turned off.

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5.3. EXTI_Key_Interrupt_mode
5.3.1. DEMO purpose
This demo includes the following functions of GD32 MCU:
Learn to use GPIO control the LED and the KEY
Learn to use EXTI to generate external interrupt
GD32E503V-EVAL-V1.0 board has five user keys and four LEDs. The keys are KEY_A,
KEY_B, KEY_C, KEY_D, and KEY_Cet. The LEDs are controlled by GPIO.
This demo will show how to use the EXTI interrupt line to control the LED2. When press down
the KEY_B, it will produce an interrupt. In the interrupt service function, the demo will toggle
LED2.
5.3.2. DEMO running result
Download the program < 03_EXTI_Key_Interrupt_mode > to the EVAL board, LED2 is turned
on and off for test. When press down the KEY_B, LED2 will be turned on. Press down the
KEY_B again, LED2 will be turned off.
5.4. USART_Printf
5.4.1. DEMO purpose
This demo includes the following functions of GD32 MCU:
Learn to use GPIO control the LED
Learn to retarget the C library printf function to the USART
5.4.2. DEMO running result
Download the program < 04_USART_Printf > to the EVAL board, connect serial cable to
USART0. Firstly, all the LEDs are turned on and off for test. Then, this implementation outputs
“USART printf example: please press the KEY_B” on the HyperTerminal using USART0.
Press the KEY_B, the LED1 will be turned on and serial port will output “USART printf
example”.
The output information via the HyperTerminal is as following：

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5.5. USART_HyperTerminal_Interrupt
5.5.1. DEMO purpose
This demo includes the following functions of GD32 MCU:
Learn to use the USART transmit and receive interrupts to communicate with the
HyperTerminal.
5.5.2. DEMO running result
Download the program <05_USART_HyperTerminal_Interrupt> to the EVAL board, connect
serial cable to USART0. Firstly, all the LEDs are turned on and off for test. Then, the USART0
sends the tx_buffer array (from 0x00 to 0xFF) to the hyperterminal and waits for receiving
data from the hyperterminal that you must send. The string that you have sent is stored in the
rx_buffer array. The receive buffer have a BUFFER_SIZE bytes as maximum. After that,
compare tx_buffer with rx_buffer. If tx_buffer is same with rx_buffer, LED1, LED2, LED3,
LED4 flash by turns. Otherwise, LED1, LED2, LED3, LED4 toggle together.
The output information via the HyperTerminal is as following:
5.6. USART_DMA
5.6.1. DEMO purpose
This demo includes the following functions of GD32 MCU:

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Learn to use the USART transmit and receive data using DMA.
5.6.2. DEMO running result
Download the program <06_USART_DMA> to the EVAL board, connect serial cable to
USART0. Firstly, all the LEDs are turned on and off for test. Then, the USART0 sends the
tx_buffer array to the hyperterminal and waits for receiving data from the hyperterminal that
you must send. The string that you have sent is stored in the rx_buffer array. The receive
buffer have a BUFFER_SIZE bytes as maximum. After that, compare tx_buffer with rx_buffer.
If tx_buffer is same with rx_buffer, LED1, LED2, LED3, LED4 flash by turns. Otherwise, LED1,
LED2, LED3, LED4 toggle together.
The output information via the HyperTerminal is as following:
5.7. ADC_Temperature_Vrefint
5.7.1. DEMO purpose
This demo includes the following functions of GD32 MCU:
Learn to use the ADC to convert analog signal to digital data
Learn to get the value of inner channel 16(temperature sensor channel) and channel 17
(Vrefint channel)
5.7.2. DEMO running result
Download the program <07_ADC_Temperature_Vrefint> to the GD32E503V-EVAL-V1.0
board. Connect serial cable to USART0, open the HyperTerminal.
When the program is running, HyperTerminal display the value of temperature and internal
voltage reference.
Notice: because there is an offset, when inner temperature sensor is used to detect accurate
temperature, an external temperature sensor part should be used to calibrate the offset error.

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5.8. ADC0_ADC1_Follow_up_mode
5.8.1. DEMO purpose
This demo includes the following functions of GD32 MCU:
Learn to use the ADC to convert analog signal to digital data
Learn to use ADC0 and ADC1 follow-up mode
5.8.2. DEMO running result
Download the program <08_ADC0_ADC1_Follow_up_mode> to the GD32E503V-EVAL-V1.0
board. Connect serial cable to USART0, open the HyperTerminal. PC3 and PC5 pin voltage
access by external voltage.
TIMER1_CH1 is the trigger source of ADC0 and ADC1. When the rising edge of
TIMER1_CH1 coming, ADC0 starts immediately and ADC1 starts after a delay of several
ADC clock cycles. The values of ADC0 and ADC1 are transmitted to array adc_value[0] and
adc_value[1] by DMA.
When the first rising edge of TIMER1_CH1 coming, the value of the ADC0 conversion of PC2
pin is stored into the low half word of adc_value[0], and after a delay of several ADC clock
cycles the value of the ADC1 conversion of PC3 pin is stored into the high half word of
adc_value[0]. When the second rising edge of TIMER1_CH1 coming, the value of the ADC0
conversion of PC3 pin is stored into the low half word of adc_value[1], and after a delay of
several ADC clock cycles the value of the ADC1 conversion of PC2 pin is stored into the high
half word of adc_value[1].
When the program is running, HyperTerminal display the regular value of ADC0 and ADC1
by adc_value[0] and adc_value[1].