GD32F103VCT6 from GigaDevice Semicon Beijing, in a LQFP-100(14x14). 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	General-purpose I/O port E bit 2; 5 V-tolerant. Alt: TRACECK, EXMC_A23.
2	PE3	bidirectional	General-purpose I/O port E bit 3; 5 V-tolerant. Alt: TRACED0, EXMC_A19.
3	PE4	bidirectional	General-purpose I/O port E bit 4; 5 V-tolerant. Alt: TRACED1, EXMC_A20.
4	PE5	bidirectional	General-purpose I/O port E bit 5; 5 V-tolerant. Alt: TRACED2, EXMC_A21; remap TIMER8_CH0.
5	PE6	bidirectional	General-purpose I/O port E bit 6; 5 V-tolerant. Alt: TRACED3, EXMC_A22; remap TIMER8_CH1.
6	VBAT	power_in	Backup battery supply (1.8-3.6 V) for RTC and backup registers when VDD is off.
7	PC13/TAMPER-RTC	bidirectional	Port C bit 13; also RTC tamper input / RTC alarm / calibration clock output. Muxed by RTC/TAMPER register configuration.
8	PC14/OSC32IN	bidirectional	Port C bit 14; also 32.768 kHz LSE oscillator input when RTC clock source uses LSE.
9	PC15/OSC32OUT	bidirectional	Port C bit 15; also 32.768 kHz LSE oscillator output.
10	VSS_5	power_in	Digital ground.
11	VDD_5	power_in	Digital supply (2.6-3.6 V).
12	OSCIN/PD0	input	HSE crystal oscillator input; remappable as GPIO PD0.
13	OSCOUT/PD1	output	HSE crystal oscillator output; remappable as GPIO PD1.
14	NRST	bidirectional	Active-low bidirectional device reset. Internally pulled up.
15	PC0	bidirectional	Port C bit 0; ADC012_IN10 analog input.
16	PC1	bidirectional	Port C bit 1; ADC012_IN11 analog input.
17	PC2	bidirectional	Port C bit 2; ADC012_IN12 analog input.
18	PC3	bidirectional	Port C bit 3; ADC012_IN13 analog input.
19	VSSA	power_in	Analog ground for ADC, DAC and reset block.
20	VREFN	power_in	ADC negative reference voltage input (typically tied to VSSA).
21	VREFP	power_in	ADC positive reference voltage input (2.6 V to VDDA).
22	VDDA	power_in	Analog supply for ADC, DAC, and reset block (2.6-3.6 V).
23	PA0-WKUP	bidirectional	Port A bit 0; wake-up input from Standby, USART1_CTS, ADC012_IN0, TIMER1_CH0/ETI, TIMER4_CH0, TIMER7_ETI.
24	PA1	bidirectional	Port A bit 1; USART1_RTS, ADC012_IN1, TIMER1_CH1, TIMER4_CH1.
25	PA2	bidirectional	Port A bit 2; USART1_TX, ADC012_IN2, TIMER1_CH2, TIMER4_CH2, TIMER8_CH0.
26	PA3	bidirectional	Port A bit 3; USART1_RX, ADC012_IN3, TIMER1_CH3, TIMER4_CH3, TIMER8_CH1.
27	VSS_4	power_in	Digital ground.
28	VDD_4	power_in	Digital supply (2.6-3.6 V).
29	PA4	bidirectional	Port A bit 4; SPI0_NSS, USART1_CK, ADC01_IN4, DAC0_OUT0; remap SPI2_NSS, I2S2_WS.
30	PA5	bidirectional	Port A bit 5; SPI0_SCK, ADC01_IN5, DAC0_OUT1.
31	PA6	bidirectional	Port A bit 6; SPI0_MISO, ADC01_IN6, TIMER2_CH0, TIMER7_BRKIN, TIMER12_CH0; remap TIMER0_BRKIN.
32	PA7	bidirectional	Port A bit 7; SPI0_MOSI, ADC01_IN7, TIMER2_CH1, TIMER7_CH0_ON, TIMER13_CH0; remap TIMER0_CH0_ON.
33	PC4	bidirectional	Port C bit 4; ADC01_IN14 analog input.
34	PC5	bidirectional	Port C bit 5; ADC01_IN15 analog input.
35	PB0	bidirectional	Port B bit 0; ADC01_IN8, TIMER2_CH2, TIMER7_CH1_ON; remap TIMER0_CH1_ON.
36	PB1	bidirectional	Port B bit 1; ADC01_IN9, TIMER2_CH3, TIMER7_CH2_ON; remap TIMER0_CH2_ON.
37	PB2/BOOT1	bidirectional	Port B bit 2; also BOOT1 boot-mode select input latched at reset. 5 V-tolerant.
38	PE7	bidirectional	Port E bit 7; EXMC_D4; remap TIMER0_ETI.
39	PE8	bidirectional	Port E bit 8; EXMC_D5; remap TIMER0_CH0_ON.
40	PE9	bidirectional	Port E bit 9; EXMC_D6; remap TIMER0_CH0.
41	PE10	bidirectional	Port E bit 10; EXMC_D7; remap TIMER0_CH1_ON.
42	PE11	bidirectional	Port E bit 11; EXMC_D8; remap TIMER0_CH1.
43	PE12	bidirectional	Port E bit 12; EXMC_D9; remap TIMER0_CH2_ON.
44	PE13	bidirectional	Port E bit 13; EXMC_D10; remap TIMER0_CH2.
45	PE14	bidirectional	Port E bit 14; EXMC_D11; remap TIMER0_CH3.
46	PE15	bidirectional	Port E bit 15; EXMC_D12; remap TIMER0_BRKIN.
47	PB10	bidirectional	Port B bit 10; I2C1_SCL, USART2_TX; remap TIMER1_CH2.
48	PB11	bidirectional	Port B bit 11; I2C1_SDA, USART2_RX; remap TIMER1_CH3.
49	VSS_1	power_in	Digital ground.
50	VDD_1	power_in	Digital supply (2.6-3.6 V).
51	PB12	bidirectional	Port B bit 12; SPI1_NSS, I2C1_SMBA, USART2_CK, TIMER0_BRKIN, I2S1_WS.
52	PB13	bidirectional	Port B bit 13; SPI1_SCK, USART2_CTS, TIMER0_CH0_ON, I2S1_CK.
53	PB14	bidirectional	Port B bit 14; SPI1_MISO, USART2_RTS, TIMER0_CH1_ON, TIMER11_CH0.
54	PB15	bidirectional	Port B bit 15; SPI1_MOSI, TIMER0_CH2_ON, I2S1_SD, TIMER11_CH1.
55	PD8	bidirectional	Port D bit 8; EXMC_D13; remap USART2_TX.
56	PD9	bidirectional	Port D bit 9; EXMC_D14; remap USART2_RX.
57	PD10	bidirectional	Port D bit 10; EXMC_D15; remap USART2_CK.
58	PD11	bidirectional	Port D bit 11; EXMC_A16/EXMC_CLE; remap USART2_CTS.
59	PD12	bidirectional	Port D bit 12; EXMC_A17/EXMC_ALE; remap TIMER3_CH0, USART2_RTS.
60	PD13	bidirectional	Port D bit 13; EXMC_A18; remap TIMER3_CH1.
61	PD14	bidirectional	Port D bit 14; EXMC_D0; remap TIMER3_CH2.
62	PD15	bidirectional	Port D bit 15; EXMC_D1; remap TIMER3_CH3.
63	PC6	bidirectional	Port C bit 6; I2S1_MCK, TIMER7_CH0, SDIO_D6; remap TIMER2_CH0.
64	PC7	bidirectional	Port C bit 7; I2S2_MCK, TIMER7_CH1, SDIO_D7; remap TIMER2_CH1.
65	PC8	bidirectional	Port C bit 8; TIMER7_CH2, SDIO_D0; remap TIMER2_CH2.
66	PC9	bidirectional	Port C bit 9; TIMER7_CH3, SDIO_D1; remap TIMER2_CH3.
67	PA8	bidirectional	Port A bit 8; USART0_CK, TIMER0_CH0, CK_OUT0.
68	PA9	bidirectional	Port A bit 9; USART0_TX, TIMER0_CH1.
69	PA10	bidirectional	Port A bit 10; USART0_RX, TIMER0_CH2.
70	PA11	bidirectional	Port A bit 11; USART0_CTS, CAN0_RX, USBDM (USB D-), TIMER0_CH3.
71	PA12	bidirectional	Port A bit 12; USART0_RTS, CAN0_TX, TIMER0_ETI, USBDP (USB D+).
72	PA13	bidirectional	Port A bit 13; default JTMS / SWDIO debug pin. Can be remapped to GPIO.
73	NC	unconnected	Not connected; leave floating.
74	VSS_2	power_in	Digital ground.
75	VDD_2	power_in	Digital supply (2.6-3.6 V).
76	PA14	bidirectional	Port A bit 14; default JTCK / SWCLK debug pin. Can be remapped to GPIO.
77	PA15	bidirectional	Port A bit 15; default JTDI. Alt SPI2_NSS, I2S2_WS; remap TIMER1_CH0/ETI, PA15, SPI0_NSS.
78	PC10	bidirectional	Port C bit 10; UART3_TX, SDIO_D2; remap USART2_TX, SPI2_SCK, I2S2_CK.
79	PC11	bidirectional	Port C bit 11; UART3_RX, SDIO_D3; remap USART2_RX, SPI2_MISO.
80	PC12	bidirectional	Port C bit 12; UART4_TX, SDIO_CK; remap USART2_CK, SPI2_MOSI, I2S2_SD.
81	PD0	bidirectional	Port D bit 0; EXMC_D2; remap CAN0_RX.
82	PD1	bidirectional	Port D bit 1; EXMC_D3; remap CAN0_TX.
83	PD2	bidirectional	Port D bit 2; TIMER2_ETI, SDIO_CMD, UART4_RX.
84	PD3	bidirectional	Port D bit 3; EXMC_CLK; remap USART1_CTS.
85	PD4	bidirectional	Port D bit 4; EXMC_NOE; remap USART1_RTS.
86	PD5	bidirectional	Port D bit 5; EXMC_NWE; remap USART1_TX.
87	PD6	bidirectional	Port D bit 6; EXMC_NWAIT; remap USART1_RX.
88	PD7	bidirectional	Port D bit 7; EXMC_NE0/EXMC_NCE1; remap USART1_CK.
89	PB3	bidirectional	Port B bit 3; default JTDO. Alt SPI2_SCK, I2S2_CK; remap TRACESWO, TIMER1_CH1, SPI0_SCK.
90	PB4	bidirectional	Port B bit 4; default NJTRST. Alt SPI2_MISO; remap TIMER2_CH0, SPI0_MISO.
91	PB5	bidirectional	Port B bit 5; I2C0_SMBA, SPI2_MOSI, I2S2_SD; remap TIMER2_CH1, SPI0_MOSI.
92	PB6	bidirectional	Port B bit 6; I2C0_SCL, TIMER3_CH0; remap USART0_TX.
93	PB7	bidirectional	Port B bit 7; I2C0_SDA, TIMER3_CH1, EXMC_NADV; remap USART0_RX.
94	BOOT0	input	Boot-mode selection input latched at reset (with PB2/BOOT1) to choose main flash, system memory, or SRAM boot source.
95	PB8	bidirectional	Port B bit 8; TIMER3_CH2, SDIO_D4, TIMER9_CH0; remap I2C0_SCL, CAN0_RX.
96	PB9	bidirectional	Port B bit 9; TIMER3_CH3, SDIO_D5, TIMER10_CH0; remap I2C0_SDA, CAN0_TX.
97	PE0	bidirectional	Port E bit 0; TIMER3_ETI, EXMC_NBL0.
98	PE1	bidirectional	Port E bit 1; EXMC_NBL1.
99	VSS_3	power_in	Digital ground.
100	VDD_3	power_in	Digital supply (2.6-3.6 V).

Key specifications

Parameter	Value
Manufacturer	GigaDevice Semicon Beijing
Package	LQFP-100(14x14)
Category	MCU
Pins	100

Ordering variants

Same part, different packaging or reel option.

GD32F103VCT6
GD32F103VCT6V8T6
GD32F103VCT6VBT6
GD32F103VCT6VDT6
GD32F103VCT6VET6
GD32F103VCT6VFT6
GD32F103VCT6VGT6
GD32F103VCT6VIT6
GD32F103VCT6VKT6
GD32F103VCT6ZCT6
GD32F103VCT6ZDT6
GD32F103VCT6ZET6
GD32F103VCT6ZFT6
GD32F103VCT6ZGT6
GD32F103VCT6ZIT6
GD32F103VCT6ZKT6
GD32F103VCT6R4T6
GD32F103VCT6R6T6
GD32F103VCT6R8T6
GD32F103VCT6RBT6
GD32F103VCT6RCT6
GD32F103VCT6RDT6
GD32F103VCT6RET6
GD32F103VCT6RFT6
GD32F103VCT6RGT6
GD32F103VCT6RIT6
GD32F103VCT6RKT6
GD32F103VCT6C6T6
GD32F103VCT6C8T6
GD32F103VCT6CBT6
GD32F103VCT6T8
GD32F103VCT6TB

CAD (KiCad official)

Symbol: GD32F103VCT6
Footprint: Package_QFP:LQFP-100_14x14mm_P0.5mm
3D model: LQFP-100(14x14) (KiCad packages3D, STEP)

Provenance

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

Datasheet: GigaDevice Semicon Beijing datasheet (112 pp, sha256 53da1a17a1523e83, 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