GD32F103VBT6 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; 5V-tolerant. Alt: TRACECK, EXMC_A23.
2	PE3	bidirectional	GPIO PE3; 5V-tolerant. Alt: TRACED0, EXMC_A19.
3	PE4	bidirectional	GPIO PE4; 5V-tolerant. Alt: TRACED1, EXMC_A20.
4	PE5	bidirectional	GPIO PE5; 5V-tolerant. Alt: TRACED2, EXMC_A21; Remap: TIMER8_CH0.
5	PE6	bidirectional	GPIO PE6; 5V-tolerant. Alt: TRACED3, EXMC_A22; Remap: TIMER8_CH1.
6	VBAT	power_in	Backup domain supply (1.8-3.6 V). Powers RTC, LXTAL and backup registers when VDD is off.
7	PC13-TAMPER-RTC	bidirectional	GPIO PC13 in backup domain. Alt: TAMPER intrusion detect / RTC output. Limited drive when powered from VBAT.
8	PC14-OSC32IN	bidirectional	GPIO PC14 or 32.768 kHz LXTAL input (OSC32IN) for the RTC.
9	PC15-OSC32OUT	bidirectional	GPIO PC15 or 32.768 kHz LXTAL output (OSC32OUT) for the RTC.
10	VSS_5	power_in	Digital ground reference (VSS domain 5). Tie to system ground.
11	VDD_5	power_in	Digital supply 2.6-3.6 V (VDD domain 5). Decouple with 100 nF near pin.
12	OSCIN-PD0	input	HXTAL crystal input (OSCIN) or remapped GPIO PD0.
13	OSCOUT-PD1	output	HXTAL crystal output (OSCOUT) or remapped GPIO PD1.
14	NRST	bidirectional	Active-low reset input with internal pull-up; asserted low forces device reset. Also driven low by internal reset sources.
15	PC0	bidirectional	GPIO PC0. Alt: ADC012_IN10 analog input.
16	PC1	bidirectional	GPIO PC1. Alt: ADC012_IN11 analog input.
17	PC2	bidirectional	GPIO PC2. Alt: ADC012_IN12 analog input.
18	PC3	bidirectional	GPIO PC3. Alt: ADC012_IN13 analog input.
19	VSSA	power_in	Analog ground reference for ADC/DAC/VREF. Tie to VSS at a single point.
20	VREFN	power_in	Negative ADC reference input; normally tied to VSSA.
21	VREFP	power_in	Positive ADC/DAC reference input (2.6 V to VDDA).
22	VDDA	power_in	Analog supply for ADC/DAC/reset (2.6-3.6 V). Decouple with 100 nF + 1 uF.
23	PA0-WKUP	bidirectional	GPIO PA0. Alt: WKUP wake-from-standby, USART1_CTS, ADC012_IN0, TIMER1_CH0/ETI, TIMER4_CH0, TIMER7_ETI.
24	PA1	bidirectional	GPIO PA1. Alt: USART1_RTS, ADC012_IN1, TIMER1_CH1, TIMER4_CH1.
25	PA2	bidirectional	GPIO PA2. Alt: USART1_TX, ADC012_IN2, TIMER1_CH2, TIMER4_CH2, TIMER8_CH0.
26	PA3	bidirectional	GPIO PA3. Alt: USART1_RX, ADC012_IN3, TIMER1_CH3, TIMER4_CH3, TIMER8_CH1.
27	VSS_4	power_in	Digital ground (VSS domain 4).
28	VDD_4	power_in	Digital supply 2.6-3.6 V (VDD domain 4).
29	PA4	bidirectional	GPIO PA4. Alt: SPI0_NSS, USART1_CK, ADC01_IN4, DAC0_OUT0; Remap: SPI2_NSS, I2S2_WS.
30	PA5	bidirectional	GPIO PA5. Alt: SPI0_SCK, ADC01_IN5, DAC0_OUT1.
31	PA6	bidirectional	GPIO PA6. Alt: SPI0_MISO, ADC01_IN6, TIMER2_CH0, TIMER7_BRKIN, TIMER12_CH0; Remap: TIMER0_BRKIN.
32	PA7	bidirectional	GPIO PA7. Alt: SPI0_MOSI, ADC01_IN7, TIMER2_CH1, TIMER7_CH0_ON, TIMER13_CH0; Remap: TIMER0_CH0_ON.
33	PC4	bidirectional	GPIO PC4. Alt: ADC01_IN14 analog input.
34	PC5	bidirectional	GPIO PC5. Alt: ADC01_IN15 analog input.
35	PB0	bidirectional	GPIO PB0. Alt: ADC01_IN8, TIMER2_CH2, TIMER7_CH1_ON; Remap: TIMER0_CH1_ON.
36	PB1	bidirectional	GPIO PB1. Alt: ADC01_IN9, TIMER2_CH3, TIMER7_CH2_ON; Remap: TIMER0_CH2_ON.
37	PB2	bidirectional	GPIO PB2 / BOOT1 boot-mode select; 5V-tolerant. Sampled at reset with BOOT0.
38	PE7	bidirectional	GPIO PE7; 5V-tolerant. Alt: EXMC_D4; Remap: TIMER0_ETI.
39	PE8	bidirectional	GPIO PE8; 5V-tolerant. Alt: EXMC_D5; Remap: TIMER0_CH0_ON.
40	PE9	bidirectional	GPIO PE9; 5V-tolerant. Alt: EXMC_D6; Remap: TIMER0_CH0.
41	PE10	bidirectional	GPIO PE10; 5V-tolerant. Alt: EXMC_D7; Remap: TIMER0_CH1_ON.
42	PE11	bidirectional	GPIO PE11; 5V-tolerant. Alt: EXMC_D8; Remap: TIMER0_CH1.
43	PE12	bidirectional	GPIO PE12; 5V-tolerant. Alt: EXMC_D9; Remap: TIMER0_CH2_ON.
44	PE13	bidirectional	GPIO PE13; 5V-tolerant. Alt: EXMC_D10; Remap: TIMER0_CH2.
45	PE14	bidirectional	GPIO PE14; 5V-tolerant. Alt: EXMC_D11; Remap: TIMER0_CH3.
46	PE15	bidirectional	GPIO PE15; 5V-tolerant. Alt: EXMC_D12; Remap: TIMER0_BRKIN.
47	PB10	bidirectional	GPIO PB10; 5V-tolerant. Alt: I2C1_SCL, USART2_TX; Remap: TIMER1_CH2.
48	PB11	bidirectional	GPIO PB11; 5V-tolerant. Alt: I2C1_SDA, USART2_RX; Remap: TIMER1_CH3.
49	VSS_1	power_in	Digital ground (VSS domain 1).
50	VDD_1	power_in	Digital supply 2.6-3.6 V (VDD domain 1).
51	PB12	bidirectional	GPIO PB12; 5V-tolerant. Alt: SPI1_NSS, I2C1_SMBA, USART2_CK, TIMER0_BRKIN, I2S1_WS.
52	PB13	bidirectional	GPIO PB13; 5V-tolerant. Alt: SPI1_SCK, USART2_CTS, TIMER0_CH0_ON, I2S1_CK.
53	PB14	bidirectional	GPIO PB14; 5V-tolerant. Alt: SPI1_MISO, USART2_RTS, TIMER0_CH1_ON, TIMER11_CH0.
54	PB15	bidirectional	GPIO PB15; 5V-tolerant. Alt: SPI1_MOSI, TIMER0_CH2_ON, I2S1_SD, TIMER11_CH1.
55	PD8	bidirectional	GPIO PD8; 5V-tolerant. Alt: EXMC_D13; Remap: USART2_TX.
56	PD9	bidirectional	GPIO PD9; 5V-tolerant. Alt: EXMC_D14; Remap: USART2_RX.
57	PD10	bidirectional	GPIO PD10; 5V-tolerant. Alt: EXMC_D15; Remap: USART2_CK.
58	PD11	bidirectional	GPIO PD11; 5V-tolerant. Alt: EXMC_A16/EXMC_CLE; Remap: USART2_CTS.
59	PD12	bidirectional	GPIO PD12; 5V-tolerant. Alt: EXMC_A17/EXMC_ALE; Remap: TIMER3_CH0, USART2_RTS.
60	PD13	bidirectional	GPIO PD13; 5V-tolerant. Alt: EXMC_A18; Remap: TIMER3_CH1.
61	PD14	bidirectional	GPIO PD14; 5V-tolerant. Alt: EXMC_D0; Remap: TIMER3_CH2.
62	PD15	bidirectional	GPIO PD15; 5V-tolerant. Alt: EXMC_D1; Remap: TIMER3_CH3.
63	PC6	bidirectional	GPIO PC6; 5V-tolerant. Alt: I2S1_MCK, TIMER7_CH0, SDIO_D6; Remap: TIMER2_CH0.
64	PC7	bidirectional	GPIO PC7; 5V-tolerant. Alt: I2S2_MCK, TIMER7_CH1, SDIO_D7; Remap: TIMER2_CH1.
65	PC8	bidirectional	GPIO PC8; 5V-tolerant. Alt: TIMER7_CH2, SDIO_D0; Remap: TIMER2_CH2.
66	PC9	bidirectional	GPIO PC9; 5V-tolerant. Alt: TIMER7_CH3, SDIO_D1; Remap: TIMER2_CH3.
67	PA8	bidirectional	GPIO PA8; 5V-tolerant. Alt: USART0_CK, TIMER0_CH0, CK_OUT0 (MCO).
68	PA9	bidirectional	GPIO PA9; 5V-tolerant. Alt: USART0_TX, TIMER0_CH1.
69	PA10	bidirectional	GPIO PA10; 5V-tolerant. Alt: USART0_RX, TIMER0_CH2.
70	PA11	bidirectional	GPIO PA11; 5V-tolerant. Alt: USART0_CTS, CAN0_RX, USBDM (USB D-), TIMER0_CH3.
71	PA12	bidirectional	GPIO PA12; 5V-tolerant. Alt: USART0_RTS, CAN0_TX, TIMER0_ETI, USBDP (USB D+).
72	PA13	bidirectional	JTMS / SWDIO debug pin (default), or remapped GPIO PA13; 5V-tolerant.
73	NC	unconnected	Not connected. Leave floating or tie per manufacturer recommendation.
74	VSS_2	power_in	Digital ground (VSS domain 2).
75	VDD_2	power_in	Digital supply 2.6-3.6 V (VDD domain 2).
76	PA14	bidirectional	JTCK / SWCLK debug pin (default), or remapped GPIO PA14; 5V-tolerant.
77	PA15	bidirectional	JTDI debug pin (default). Alt: SPI2_NSS, I2S2_WS; Remap: TIMER1_CH0/ETI, PA15, SPI0_NSS. 5V-tolerant.
78	PC10	bidirectional	GPIO PC10; 5V-tolerant. Alt: UART3_TX, SDIO_D2; Remap: USART2_TX, SPI2_SCK, I2S2_CK.
79	PC11	bidirectional	GPIO PC11; 5V-tolerant. Alt: UART3_RX, SDIO_D3; Remap: USART2_RX, SPI2_MISO.
80	PC12	bidirectional	GPIO PC12; 5V-tolerant. Alt: UART4_TX, SDIO_CK; Remap: USART2_CK, SPI2_MOSI, I2S2_SD.
81	PD0	bidirectional	GPIO PD0; 5V-tolerant. Alt: EXMC_D2; Remap: CAN0_RX.
82	PD1	bidirectional	GPIO PD1; 5V-tolerant. Alt: EXMC_D3; Remap: CAN0_TX.
83	PD2	bidirectional	GPIO PD2; 5V-tolerant. Alt: TIMER2_ETI, SDIO_CMD, UART4_RX.
84	PD3	bidirectional	GPIO PD3; 5V-tolerant. Alt: EXMC_CLK; Remap: USART1_CTS.
85	PD4	bidirectional	GPIO PD4; 5V-tolerant. Alt: EXMC_NOE; Remap: USART1_RTS.
86	PD5	bidirectional	GPIO PD5; 5V-tolerant. Alt: EXMC_NWE; Remap: USART1_TX.
87	PD6	bidirectional	GPIO PD6; 5V-tolerant. Alt: EXMC_NWAIT; Remap: USART1_RX.
88	PD7	bidirectional	GPIO PD7; 5V-tolerant. Alt: EXMC_NE0/EXMC_NCE1; Remap: USART1_CK.
89	PB3	bidirectional	JTDO debug pin (default). Alt: SPI2_SCK, I2S2_CK; Remap: PB3, TRACESWO, TIMER1_CH1, SPI0_SCK. 5V-tolerant.
90	PB4	bidirectional	NJTRST debug pin (default). Alt: SPI2_MISO; Remap: TIMER2_CH0, PB4, SPI0_MISO. 5V-tolerant.
91	PB5	bidirectional	GPIO PB5. Alt: I2C0_SMBA, SPI2_MOSI, I2S2_SD; Remap: TIMER2_CH1, SPI0_MOSI.
92	PB6	bidirectional	GPIO PB6; 5V-tolerant. Alt: I2C0_SCL, TIMER3_CH0; Remap: USART0_TX.
93	PB7	bidirectional	GPIO PB7; 5V-tolerant. Alt: I2C0_SDA, TIMER3_CH1, EXMC_NADV; Remap: USART0_RX.
94	BOOT0	input	Boot-mode select input. Sampled at reset with BOOT1 (PB2) to choose between main flash, system memory bootloader, or SRAM.
95	PB8	bidirectional	GPIO PB8; 5V-tolerant. Alt: TIMER3_CH2, SDIO_D4, TIMER9_CH0; Remap: I2C0_SCL, CAN0_RX.
96	PB9	bidirectional	GPIO PB9; 5V-tolerant. Alt: TIMER3_CH3, SDIO_D5, TIMER10_CH0; Remap: I2C0_SDA, CAN0_TX.
97	PE0	bidirectional	GPIO PE0; 5V-tolerant. Alt: TIMER3_ETI, EXMC_NBL0.
98	PE1	bidirectional	GPIO PE1; 5V-tolerant. Alt: EXMC_NBL1.
99	VSS_3	power_in	Digital ground (VSS domain 3).
100	VDD_3	power_in	Digital supply 2.6-3.6 V (VDD domain 3).

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.

GD32F103VBT6
GD32F103VBT6V8T6
GD32F103VBT6VCT6
GD32F103VBT6VDT6
GD32F103VBT6VET6
GD32F103VBT6VFT6
GD32F103VBT6VGT6
GD32F103VBT6VIT6
GD32F103VBT6VKT6
GD32F103VBT6ZCT6
GD32F103VBT6ZDT6
GD32F103VBT6ZET6
GD32F103VBT6ZFT6
GD32F103VBT6ZGT6
GD32F103VBT6ZIT6
GD32F103VBT6ZKT6
GD32F103VBT6R8T6
GD32F103VBT6RBT6
GD32F103VBT6RCT6
GD32F103VBT6RDT6
GD32F103VBT6RET6
GD32F103VBT6RFT6
GD32F103VBT6RGT6
GD32F103VBT6RIT6
GD32F103VBT6RKT6
GD32F103VBT6C4T6
GD32F103VBT6C6T6
GD32F103VBT6C8T6
GD32F103VBT6CBT6
GD32F103VBT6T4U6
GD32F103VBT6U6
GD32F103VBT6T8U6
GD32F103VBT6TBU6

CAD (KiCad official)

Symbol: GD32F103VBT6
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