GD32F330CBT6 from GigaDevice Semicon Beijing, in a LQFP-48(7x7). 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	VBAT	power_in	Backup battery supply (1.8-3.6 V) for RTC, LSE 32.768 kHz oscillator and backup domain when VDD is not present.
2	PC13-TAMPER-RTC	bidirectional	GPIO PC13 with additional functions RTC_TAMP0, RTC_TS, RTC_OUT and WKUP1. Located in the backup/VBAT domain (limited drive strength).
3	PC14-OSC32IN	bidirectional	GPIO PC14 / LSE 32.768 kHz crystal oscillator input. Configure as OSC32IN when using the LXTAL crystal for the RTC.
4	PC15-OSC32OUT	bidirectional	GPIO PC15 / LSE 32.768 kHz crystal oscillator output. Configure as OSC32OUT when using the LXTAL crystal for the RTC.
5	PF0-OSCIN	bidirectional	GPIO PF0 / HSE 4-32 MHz crystal oscillator input; alternate CTC_SYNC. 5V-tolerant.
6	PF1-OSCOUT	bidirectional	GPIO PF1 / HSE 4-32 MHz crystal oscillator output. 5V-tolerant.
7	NRST	bidirectional	Active-low system reset input/output. Internally pulled up; drive low to reset the device.
8	VSSA	power_in	Analog ground reference for ADC, reset blocks, internal RCs and PLL. Must be tied to VSS.
9	VDDA	power_in	Analog supply (2.6-3.6 V) for ADC, reset blocks, internal RCs and PLL. Must be tied to VDD.
10	PA0-WKUP	bidirectional	GPIO PA0 with USART0/1_CTS, TIMER1_CH0/ETI, I2C1_SCL alt-funcs; additional ADC_IN0, RTC_TAMP1, WKUP0 (Standby wakeup).
11	PA1	bidirectional	GPIO PA1; alt USART0/1_RTS, TIMER1_CH1, I2C1_SDA, EVENTOUT; additional ADC_IN1.
12	PA2	bidirectional	GPIO PA2; alt USART0/1_TX, TIMER1_CH2, TIMER14_CH0; additional ADC_IN2.
13	PA3	bidirectional	GPIO PA3; alt USART0/1_RX, TIMER1_CH3, TIMER14_CH1; additional ADC_IN3.
14	PA4	bidirectional	GPIO PA4; alt SPI0_NSS, USART0/1_CK, TIMER13_CH0, SPI1_NSS; additional ADC_IN4.
15	PA5	bidirectional	GPIO PA5; alt SPI0_SCK, TIMER1_CH0/ETI; additional ADC_IN5.
16	PA6	bidirectional	GPIO PA6; alt SPI0_MISO, TIMER2_CH0, TIMER0_BKIN, TIMER15_CH0, EVENTOUT; additional ADC_IN6.
17	PA7	bidirectional	GPIO PA7; alt SPI0_MOSI, TIMER2_CH1, TIMER13_CH0, TIMER0_CH0_ON, TIMER16_CH0, EVENTOUT; additional ADC_IN7.
18	PB0	bidirectional	GPIO PB0; alt TIMER2_CH2, TIMER0_CH1_ON, USART1_RX, EVENTOUT; additional ADC_IN8.
19	PB1	bidirectional	GPIO PB1; alt TIMER2_CH3, TIMER13_CH0, TIMER0_CH2_ON, SPI1_SCK; additional ADC_IN9.
20	PB2	bidirectional	GPIO PB2 (default function only). 5V-tolerant.
21	PB10	bidirectional	GPIO PB10; alt I2C0_SCL/I2C1_SCL, TIMER1_CH2, SPI1_IO2. 5V-tolerant.
22	PB11	bidirectional	GPIO PB11; alt I2C0_SDA/I2C1_SDA, TIMER1_CH3, EVENTOUT, SPI1_IO3. 5V-tolerant.
23	VSS	power_in	Digital ground return.
24	VDD	power_in	Digital supply (2.6-3.6 V) for I/Os and internal regulator. Decouple locally.
25	PB12	bidirectional	GPIO PB12; alt SPI0_NSS/SPI1_NSS, TIMER0_BKIN, I2C1_SMBA, EVENTOUT. 5V-tolerant.
26	PB13	bidirectional	GPIO PB13; alt SPI0_SCK/SPI1_SCK, TIMER0_CH0_ON. 5V-tolerant.
27	PB14	bidirectional	GPIO PB14; alt SPI0_MISO/SPI1_MISO, TIMER0_CH1_ON, TIMER14_CH0. 5V-tolerant.
28	PB15	bidirectional	GPIO PB15; alt SPI0_MOSI/SPI1_MOSI, TIMER0_CH2_ON, TIMER14_CH0_ON, TIMER14_CH1; additional RTC_REFIN, WKUP6. 5V-tolerant.
29	PA8	bidirectional	GPIO PA8; alt USART0_CK, TIMER0_CH0, CK_OUT (MCO), USART1_TX, EVENTOUT, CTC_SYNC. 5V-tolerant.
30	PA9	bidirectional	GPIO PA9; alt USART0_TX, TIMER0_CH1, TIMER14_BKIN, I2C0_SCL. 5V-tolerant.
31	PA10	bidirectional	GPIO PA10; alt USART0_RX, TIMER0_CH2, TIMER16_BKIN, I2C0_SDA. 5V-tolerant.
32	PA11	bidirectional	GPIO PA11; alt USART0_CTS, TIMER0_CH3, EVENTOUT, SPI1_IO2. 5V-tolerant.
33	PA12	bidirectional	GPIO PA12; alt USART0_RTS, TIMER0_ETI, EVENTOUT, SPI1_IO3. 5V-tolerant.
34	PA13	bidirectional	GPIO PA13; alt IFRP_OUT, SWDIO (serial wire debug data), SPI1_MISO. Default: SWDIO after reset. 5V-tolerant.
35	PF6	bidirectional	GPIO PF6; alt I2C0_SCL/I2C1_SCL. 5V-tolerant.
36	PF7	bidirectional	GPIO PF7; alt I2C0_SDA/I2C1_SDA. 5V-tolerant.
37	PA14	bidirectional	GPIO PA14; alt USART0_TX/USART1_TX, SWCLK (serial wire debug clock), SPI1_MOSI. Default: SWCLK after reset. 5V-tolerant.
38	PA15	bidirectional	GPIO PA15; alt SPI0_NSS, USART0_RX/USART1_RX, TIMER1_CH0/ETI, SPI1_NSS, EVENTOUT. 5V-tolerant.
39	PB3	bidirectional	GPIO PB3; alt SPI0_SCK, TIMER1_CH1, EVENTOUT. 5V-tolerant.
40	PB4	bidirectional	GPIO PB4; alt SPI0_MISO, TIMER2_CH0, EVENTOUT. 5V-tolerant.
41	PB5	bidirectional	GPIO PB5; alt SPI0_MOSI, I2C0_SMBA, TIMER15_BKIN, TIMER2_CH1; additional WKUP5. 5V-tolerant.
42	PB6	bidirectional	GPIO PB6; alt I2C0_SCL, USART0_TX, TIMER15_CH0_ON. 5V-tolerant.
43	PB7	bidirectional	GPIO PB7; alt I2C0_SDA, USART0_RX, TIMER16_CH0_ON. 5V-tolerant.
44	BOOT0	input	Boot mode select input. Sampled at reset: 0 = boot from main Flash (default), 1 = boot from system memory (bootloader) or SRAM depending on BOOT1 option bit.
45	PB8	bidirectional	GPIO PB8; alt I2C0_SCL, TIMER15_CH0. 5V-tolerant.
46	PB9	bidirectional	GPIO PB9; alt I2C0_SDA, IFRP_OUT, TIMER16_CH0, EVENTOUT. 5V-tolerant.
47	VSS	power_in	Digital ground return (second VSS pin on LQFP-48).
48	VDD	power_in	Digital supply (2.6-3.6 V) for I/Os and internal regulator (second VDD pin on LQFP-48). Decouple locally.

Key specifications

Parameter	Value
Manufacturer	GigaDevice Semicon Beijing
Package	LQFP-48(7x7)
Category	MCU
Pins	48

Ordering variants

Same part, different packaging or reel option.

GD32F330CBT6C4T6
GD32F330CBT6C6T6
GD32F330CBT6C8T6
GD32F330CBT6
GD32F330CBT6R8T6
GD32F330CBT6RBT6
GD32F330CBT6K4U6
GD32F330CBT6K6U6
GD32F330CBT6K8U6
GD32F330CBT6G4U6
GD32F330CBT6G6U6
GD32F330CBT6G8U6
GD32F330CBT6F4P6
GD32F330CBT6F6P6
GD32F330CBT6F8P6

CAD (KiCad official)

Symbol: GD32F330CBT6
Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
3D model: LQFP-48(7x7) (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`gd32f330cbt6.step`	617 KB	You want the bare part, or you mark your own boards.
`gd32f330cbt6-etched.step`	4.9 MB	You want the part with `GD32F330CBT6` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 1203 faces against 747 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 (48 pp, sha256 461bf875e081b33e, 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