component

GD32F303ZET6

Public Unreviewed

by Ray

GigaDevice Semicon Beijing Microcontrollers (MCU/MPU/SOC), LQFP-144(20x20). Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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GD32F303ZET6

GigaDevice Semicon Beijing · Microcontrollers (MCU/MPU/SOC) · LQFP-144(20x20)

GD32F303ZET6 from GigaDevice Semicon Beijing, in a LQFP-144(20x20). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 PE2 bidirectional GPIO PE2. 5 V tolerant. Alt: TRACECK, EXMC_A23.
2 PE3 bidirectional GPIO PE3. 5 V tolerant. Alt: TRACED0, EXMC_A19.
3 PE4 bidirectional GPIO PE4. 5 V tolerant. Alt: TRACED1, EXMC_A20.
4 PE5 bidirectional GPIO PE5. 5 V tolerant. Alt: TRACED2, EXMC_A21; Remap: TIMER8_CH0.
5 PE6 bidirectional GPIO PE6. 5 V tolerant. Alt: TRACED3, EXMC_A22; Remap: TIMER8_CH1.
6 VBAT power_in Backup battery supply for RTC and backup domain (typ. 1.8-3.6 V).
7 PC13-TAMPER-RTC bidirectional GPIO PC13 (backup domain). Alt: TAMPER-RTC input. Limited drive when backup-powered.
8 PC14-OSC32IN bidirectional GPIO PC14 or 32.768 kHz LSE crystal input (OSC32IN).
9 PC15-OSC32OUT bidirectional GPIO PC15 or 32.768 kHz LSE crystal output (OSC32OUT).
10 PF0 bidirectional GPIO PF0. 5 V tolerant. Alt: EXMC_A0; Remap: CTC_SYNC.
11 PF1 bidirectional GPIO PF1. 5 V tolerant. Alt: EXMC_A1.
12 PF2 bidirectional GPIO PF2. 5 V tolerant. Alt: EXMC_A2.
13 PF3 bidirectional GPIO PF3. 5 V tolerant. Alt: EXMC_A3.
14 PF4 bidirectional GPIO PF4. 5 V tolerant. Alt: EXMC_A4.
15 PF5 bidirectional GPIO PF5. 5 V tolerant. Alt: EXMC_A5.
16 VSS_5 power_in Digital ground.
17 VDD_5 power_in Digital 2.6-3.6 V supply.
18 PF6 bidirectional GPIO PF6. Alt: ADC2_IN4, EXMC_NIORD; Remap: TIMER9_CH0.
19 PF7 bidirectional GPIO PF7. Alt: ADC2_IN5, EXMC_NREG; Remap: TIMER10_CH0.
20 PF8 bidirectional GPIO PF8. Alt: ADC2_IN6, EXMC_NIOWR; Remap: TIMER12_CH0.
21 PF9 bidirectional GPIO PF9. Alt: ADC2_IN7, EXMC_CD; Remap: TIMER13_CH0.
22 PF10 bidirectional GPIO PF10. Alt: ADC2_IN8, EXMC_INTR.
23 OSCIN input HSE crystal / external clock input (4-32 MHz). Remap to PD0.
24 OSCOUT output HSE crystal output. Remap to PD1.
25 NRST bidirectional Active-low bidirectional device reset. Internal pull-up.
26 PC0 bidirectional GPIO PC0. Alt: ADC012_IN10.
27 PC1 bidirectional GPIO PC1. Alt: ADC012_IN11.
28 PC2 bidirectional GPIO PC2. Alt: ADC012_IN12.
29 PC3 bidirectional GPIO PC3. Alt: ADC012_IN13.
30 VSSA power_in Analog ground reference for ADC/DAC.
31 VREF- power_in ADC/DAC negative reference voltage input. Tie to VSSA if unused.
32 VREF+ power_in ADC/DAC positive reference voltage input (2.6 V min to VDDA).
33 VDDA power_in Analog 2.6-3.6 V supply for ADC/DAC/reset circuit.
34 PA0-WKUP bidirectional GPIO PA0 / wake-up input. Alt: USART1_CTS, ADC012_IN0, TIMER1_CH0, TIMER1_ETI, TIMER4_CH0, TIMER7_ETI.
35 PA1 bidirectional GPIO PA1. Alt: USART1_RTS, ADC012_IN1, TIMER1_CH1, TIMER4_CH1.
36 PA2 bidirectional GPIO PA2. Alt: USART1_TX, ADC012_IN2, TIMER1_CH2, TIMER4_CH2, TIMER8_CH0, SPI0_IO2.
37 PA3 bidirectional GPIO PA3. Alt: USART1_RX, ADC012_IN3, TIMER1_CH3, TIMER4_CH3, TIMER8_CH1, SPI0_IO3.
38 VSS_4 power_in Digital ground.
39 VDD_4 power_in Digital 2.6-3.6 V supply.
40 PA4 bidirectional GPIO PA4. Alt: SPI0_NSS, USART1_CK, ADC01_IN4, DAC_OUT0; Remap: SPI2_NSS, I2S2_WS.
41 PA5 bidirectional GPIO PA5. Alt: SPI0_SCK, ADC01_IN5, DAC_OUT1.
42 PA6 bidirectional GPIO PA6. Alt: SPI0_MISO, ADC01_IN6, TIMER2_CH0, TIMER7_BRKIN, TIMER12_CH0; Remap: TIMER0_BRKIN.
43 PA7 bidirectional GPIO PA7. Alt: SPI0_MOSI, ADC01_IN7, TIMER2_CH1, TIMER7_CH0_ON, TIMER13_CH0; Remap: TIMER0_CH0_ON.
44 PC4 bidirectional GPIO PC4. Alt: ADC01_IN14.
45 PC5 bidirectional GPIO PC5. Alt: ADC01_IN15.
46 PB0 bidirectional GPIO PB0. Alt: ADC01_IN8, TIMER2_CH2, TIMER7_CH1_ON; Remap: TIMER0_CH1_ON.
47 PB1 bidirectional GPIO PB1. Alt: ADC01_IN9, TIMER2_CH3, TIMER7_CH2_ON; Remap: TIMER0_CH2_ON.
48 PB2 bidirectional GPIO PB2 / BOOT1 boot-mode select. 5 V tolerant.
49 PF11 bidirectional GPIO PF11. 5 V tolerant. Alt: EXMC_NIOS16.
50 PF12 bidirectional GPIO PF12. 5 V tolerant. Alt: EXMC_A6.
51 VSS_6 power_in Digital ground.
52 VDD_6 power_in Digital 2.6-3.6 V supply.
53 PF13 bidirectional GPIO PF13. 5 V tolerant. Alt: EXMC_A7.
54 PF14 bidirectional GPIO PF14. 5 V tolerant. Alt: EXMC_A8.
55 PF15 bidirectional GPIO PF15. 5 V tolerant. Alt: EXMC_A9.
56 PG0 bidirectional GPIO PG0. 5 V tolerant. Alt: EXMC_A10.
57 PG1 bidirectional GPIO PG1. 5 V tolerant. Alt: EXMC_A11.
58 PE7 bidirectional GPIO PE7. 5 V tolerant. Alt: EXMC_D4; Remap: TIMER0_ETI.
59 PE8 bidirectional GPIO PE8. 5 V tolerant. Alt: EXMC_D5; Remap: TIMER0_CH0_ON.
60 PE9 bidirectional GPIO PE9. 5 V tolerant. Alt: EXMC_D6; Remap: TIMER0_CH0.
61 VSS_7 power_in Digital ground.
62 VDD_7 power_in Digital 2.6-3.6 V supply.
63 PE10 bidirectional GPIO PE10. 5 V tolerant. Alt: EXMC_D7; Remap: TIMER0_CH1_ON.
64 PE11 bidirectional GPIO PE11. 5 V tolerant. Alt: EXMC_D8; Remap: TIMER0_CH1.
65 PE12 bidirectional GPIO PE12. 5 V tolerant. Alt: EXMC_D9; Remap: TIMER0_CH2_ON.
66 PE13 bidirectional GPIO PE13. 5 V tolerant. Alt: EXMC_D10; Remap: TIMER0_CH2.
67 PE14 bidirectional GPIO PE14. 5 V tolerant. Alt: EXMC_D11; Remap: TIMER0_CH3.
68 PE15 bidirectional GPIO PE15. 5 V tolerant. Alt: EXMC_D12; Remap: TIMER0_BRKIN.
69 PB10 bidirectional GPIO PB10. 5 V tolerant. Alt: I2C1_SCL, USART2_TX; Remap: TIMER1_CH2.
70 PB11 bidirectional GPIO PB11. 5 V tolerant. Alt: I2C1_SDA, USART2_RX; Remap: TIMER1_CH3.
71 VSS_1 power_in Digital ground.
72 VDD_1 power_in Digital 2.6-3.6 V supply.
73 PB12 bidirectional GPIO PB12. 5 V tolerant. Alt: SPI1_NSS, I2C1_SMBA, USART2_CK, TIMER0_BRKIN, I2S1_WS.
74 PB13 bidirectional GPIO PB13. 5 V tolerant. Alt: SPI1_SCK, USART2_CTS, TIMER0_CH0_ON, I2S1_CK.
75 PB14 bidirectional GPIO PB14. 5 V tolerant. Alt: SPI1_MISO, USART2_RTS, TIMER0_CH1_ON, TIMER11_CH0.
76 PB15 bidirectional GPIO PB15. 5 V tolerant. Alt: SPI1_MOSI, TIMER0_CH2_ON, I2S1_SD, TIMER11_CH1.
77 PD8 bidirectional GPIO PD8. 5 V tolerant. Alt: EXMC_D13; Remap: USART2_TX.
78 PD9 bidirectional GPIO PD9. 5 V tolerant. Alt: EXMC_D14; Remap: USART2_RX.
79 PD10 bidirectional GPIO PD10. 5 V tolerant. Alt: EXMC_D15; Remap: USART2_CK.
80 PD11 bidirectional GPIO PD11. 5 V tolerant. Alt: EXMC_A16; Remap: USART2_CTS.
81 PD12 bidirectional GPIO PD12. 5 V tolerant. Alt: EXMC_A17; Remap: TIMER3_CH0, USART2_RTS.
82 PD13 bidirectional GPIO PD13. 5 V tolerant. Alt: EXMC_A18; Remap: TIMER3_CH1.
83 VSS_8 power_in Digital ground.
84 VDD_8 power_in Digital 2.6-3.6 V supply.
85 PD14 bidirectional GPIO PD14. 5 V tolerant. Alt: EXMC_D0; Remap: TIMER3_CH2.
86 PD15 bidirectional GPIO PD15. 5 V tolerant. Alt: EXMC_D1; Remap: TIMER3_CH3, CTC_SYNC.
87 PG2 bidirectional GPIO PG2. 5 V tolerant. Alt: EXMC_A12.
88 PG3 bidirectional GPIO PG3. 5 V tolerant. Alt: EXMC_A13.
89 PG4 bidirectional GPIO PG4. 5 V tolerant. Alt: EXMC_A14.
90 PG5 bidirectional GPIO PG5. 5 V tolerant. Alt: EXMC_A15.
91 PG6 bidirectional GPIO PG6. 5 V tolerant. Alt: EXMC_INT1.
92 PG7 bidirectional GPIO PG7. 5 V tolerant. Alt: EXMC_INT2.
93 PG8 bidirectional GPIO PG8. 5 V tolerant.
94 VSS_9 power_in Digital ground.
95 VDD_9 power_in Digital 2.6-3.6 V supply.
96 PC6 bidirectional GPIO PC6. 5 V tolerant. Alt: I2S1_MCK, TIMER7_CH0, SDIO_D6; Remap: TIMER2_CH0.
97 PC7 bidirectional GPIO PC7. 5 V tolerant. Alt: I2S2_MCK, TIMER7_CH1, SDIO_D7; Remap: TIMER2_CH1.
98 PC8 bidirectional GPIO PC8. 5 V tolerant. Alt: TIMER7_CH2, SDIO_D0; Remap: TIMER2_CH2.
99 PC9 bidirectional GPIO PC9. 5 V tolerant. Alt: TIMER7_CH3, SDIO_D1; Remap: TIMER2_CH3.
100 PA8 bidirectional GPIO PA8. 5 V tolerant. Alt: USART0_CK, TIMER0_CH0, CK_OUT0, CTC_SYNC.
101 PA9 bidirectional GPIO PA9. 5 V tolerant. Alt: USART0_TX, TIMER0_CH1.
102 PA10 bidirectional GPIO PA10. 5 V tolerant. Alt: USART0_RX, TIMER0_CH2.
103 PA11 bidirectional GPIO PA11. 5 V tolerant. Alt: USART0_CTS, CAN0_RX, USBDM, TIMER0_CH3.
104 PA12 bidirectional GPIO PA12. 5 V tolerant. Alt: USART0_RTS, CAN0_TX, TIMER0_ETI, USBDP.
105 PA13 bidirectional JTMS / SWDIO debug pin (default). May be remapped to PA13 GPIO.
106 NC unconnected Not connected.
107 VSS_2 power_in Digital ground.
108 VDD_2 power_in Digital 2.6-3.6 V supply.
109 PA14 bidirectional JTCK / SWCLK debug clock (default). May be remapped to PA14 GPIO.
110 PA15 bidirectional JTDI (default). Alt: SPI2_NSS, I2S2_WS; Remap: TIMER1_CH0, TIMER1_ETI, PA15 GPIO, SPI0_NSS.
111 PC10 bidirectional GPIO PC10. 5 V tolerant. Alt: UART3_TX, SDIO_D2; Remap: USART2_TX, SPI2_SCK, I2S2_CK.
112 PC11 bidirectional GPIO PC11. 5 V tolerant. Alt: UART3_RX, SDIO_D3; Remap: USART2_RX, SPI2_MISO.
113 PC12 bidirectional GPIO PC12. 5 V tolerant. Alt: UART4_TX, SDIO_CK; Remap: USART2_CK, SPI2_MOSI, I2S2_SD.
114 PD0 bidirectional GPIO PD0. 5 V tolerant. Alt: EXMC_D2; Remap: CAN0_RX, OSCIN.
115 PD1 bidirectional GPIO PD1. 5 V tolerant. Alt: EXMC_D3; Remap: CAN0_TX, OSCOUT.
116 PD2 bidirectional GPIO PD2. 5 V tolerant. Alt: TIMER2_ETI, SDIO_CMD, UART4_RX.
117 PD3 bidirectional GPIO PD3. 5 V tolerant. Alt: EXMC_CLK; Remap: USART1_CTS.
118 PD4 bidirectional GPIO PD4. 5 V tolerant. Alt: EXMC_NOE; Remap: USART1_RTS.
119 PD5 bidirectional GPIO PD5. 5 V tolerant. Alt: EXMC_NWE; Remap: USART1_TX.
120 VSS_10 power_in Digital ground.
121 VDD_10 power_in Digital 2.6-3.6 V supply.
122 PD6 bidirectional GPIO PD6. 5 V tolerant. Alt: EXMC_NWAIT; Remap: USART1_RX.
123 PD7 bidirectional GPIO PD7. 5 V tolerant. Alt: EXMC_NE0, EXMC_NCE1; Remap: USART1_CK.
124 PG9 bidirectional GPIO PG9. 5 V tolerant. Alt: EXMC_NE1, EXMC_NCE2.
125 PG10 bidirectional GPIO PG10. 5 V tolerant. Alt: EXMC_NCE3_0, EXMC_NE2.
126 PG11 bidirectional GPIO PG11. 5 V tolerant. Alt: EXMC_NCE3_1.
127 PG12 bidirectional GPIO PG12. 5 V tolerant. Alt: EXMC_NE3.
128 PG13 bidirectional GPIO PG13. 5 V tolerant. Alt: EXMC_A24.
129 PG14 bidirectional GPIO PG14. 5 V tolerant. Alt: EXMC_A25.
130 VSS_11 power_in Digital ground.
131 VDD_11 power_in Digital 2.6-3.6 V supply.
132 PG15 bidirectional GPIO PG15. 5 V tolerant.
133 PB3 bidirectional JTDO (default). Alt: SPI2_SCK, I2S2_CK; Remap: PB3 GPIO, TRACESWO, TIMER1_CH1, SPI0_SCK.
134 PB4 bidirectional NJTRST (default). Alt: SPI2_MISO; Remap: TIMER2_CH0, PB4 GPIO, SPI0_MISO.
135 PB5 bidirectional GPIO PB5. Alt: I2C0_SMBA, SPI2_MOSI, I2S2_SD; Remap: TIMER2_CH1, SPI0_MOSI.
136 PB6 bidirectional GPIO PB6. 5 V tolerant. Alt: I2C0_SCL, TIMER3_CH0; Remap: USART0_TX, SPI0_IO2.
137 PB7 bidirectional GPIO PB7. 5 V tolerant. Alt: I2C0_SDA, TIMER3_CH1, EXMC_NADV; Remap: USART0_RX, SPI0_IO3.
138 BOOT0 input Boot-mode select input. Sampled at reset to choose boot memory (main flash, system memory, or SRAM).
139 PB8 bidirectional GPIO PB8. 5 V tolerant. Alt: TIMER3_CH2, SDIO_D4, TIMER9_CH0; Remap: I2C0_SCL, CAN0_RX.
140 PB9 bidirectional GPIO PB9. 5 V tolerant. Alt: TIMER3_CH3, SDIO_D5, TIMER10_CH0; Remap: I2C0_SDA, CAN0_TX.
141 PE0 bidirectional GPIO PE0. 5 V tolerant. Alt: TIMER3_ETI, EXMC_NBL0.
142 PE1 bidirectional GPIO PE1. 5 V tolerant. Alt: EXMC_NBL1.
143 VSS_3 power_in Digital ground.
144 VDD_3 power_in Digital 2.6-3.6 V supply.

Key specifications

Parameter Value
Manufacturer GigaDevice Semicon Beijing
Package LQFP-144(20x20)
Category MCU
Pins 144

Ordering variants

Same part, different packaging or reel option.

  • GD32F303ZET6ZCT6
  • GD32F303ZET6
  • GD32F303ZET6ZGT6
  • GD32F303ZET6ZIT6
  • GD32F303ZET6ZKT6
  • GD32F303ZET6VCT6
  • GD32F303ZET6VET6
  • GD32F303ZET6VGT6
  • GD32F303ZET6VIT6
  • GD32F303ZET6VKT6
  • GD32F303ZET6RCT6
  • GD32F303ZET6RET6
  • GD32F303ZET6RGT6
  • GD32F303ZET6RIT6
  • GD32F303ZET6RKT6
  • GD32F303ZET6CCT6
  • GD32F303ZET6CET6
  • GD32F303ZET6CGT6

CAD (KiCad official)

  • Symbol: GD32F303ZET6
  • Footprint: Package_QFP:LQFP-144_20x20mm_P0.5mm
  • 3D model: LQFP-144(20x20) (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
gd32f303zet6.step 1871 KB You want the bare part, or you mark your own boards.
gd32f303zet6-etched.step 9.7 MB You want the part with GD32F303ZET6 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 2415 faces against 2195 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: GigaDevice Semicon Beijing datasheet (91 pp, sha256 94da11f19fe397ec, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF