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GD32C103CBT6

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GigaDevice Semicon Beijing Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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Datasheet

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Contents

README

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GD32C103CBT6

GigaDevice Semicon Beijing · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)

GD32C103CBT6 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 the RTC and backup domain when VDD is absent.
2 PC13/TAMPER-RTC bidirectional General-purpose I/O PC13. Alternate function: RTC tamper detect input / RTC alarm/second output. Limited drive when powered from VBAT.
3 PC14/OSC32IN bidirectional General-purpose I/O PC14. Alternate function: 32.768 kHz LSE crystal input (OSC32IN).
4 PC15/OSC32OUT bidirectional General-purpose I/O PC15. Alternate function: 32.768 kHz LSE crystal output (OSC32OUT).
5 PD0/OSCIN input HSE crystal/oscillator input (OSCIN, 4-32 MHz). Can be remapped to PD0 GPIO. Note: PD0/PD1 cannot be used for EXTI in this package.
6 PD1/OSCOUT output HSE crystal oscillator output (OSCOUT). Can be remapped to PD1 GPIO. Note: PD0/PD1 cannot be used for EXTI in this package.
7 NRST bidirectional Bidirectional device reset input / open-drain reset output, active low.
8 VSSA power_in Analog ground reference for ADC, DAC and VREF.
9 VDDA power_in Analog supply for ADC, DAC and internal VREF (2.6-3.6 V, tied to VDD if ADC/DAC are unused within spec).
10 PA0/WKUP bidirectional GPIO PA0. Alt: WKUP wakeup input, USART1_CTS, ADC01_IN0, TIMER1_CH0/ETI, TIMER4_CH0.
11 PA1 bidirectional GPIO PA1. Alt: USART1_RTS, ADC01_IN1, TIMER4_CH1, TIMER1_CH1.
12 PA2 bidirectional GPIO PA2. Alt: USART1_TX, TIMER4_CH2, ADC01_IN2, TIMER8_CH0, TIMER1_CH2, SPI0_IO2.
13 PA3 bidirectional GPIO PA3. Alt: USART1_RX, TIMER4_CH3, ADC01_IN3, TIMER1_CH3, TIMER8_CH1, SPI0_IO3.
14 PA4 bidirectional GPIO PA4. Alt: SPI0_NSS, USART1_CK, DAC0_OUT0, ADC01_IN4. Remap: SPI2_NSS, I2S2_WS.
15 PA5 bidirectional GPIO PA5. Alt: SPI0_SCK, ADC01_IN5, DAC0_OUT1.
16 PA6 bidirectional GPIO PA6. Alt: SPI0_MISO, ADC01_IN6, TIMER2_CH0, TIMER12_CH0. Remap: TIMER0_BRKIN.
17 PA7 bidirectional GPIO PA7. Alt: SPI0_MOSI, ADC01_IN7, TIMER2_CH1, TIMER13_CH0. Remap: TIMER0_CH0_ON.
18 PB0 bidirectional GPIO PB0. Alt: ADC01_IN8, TIMER2_CH2. Remap: TIMER0_CH1_ON.
19 PB1 bidirectional GPIO PB1. Alt: ADC01_IN9, TIMER2_CH3. Remap: TIMER0_CH2_ON.
20 PB2/BOOT1 bidirectional GPIO PB2 (5 V-tolerant), also sampled as BOOT1 boot-mode select at reset.
21 PB10 bidirectional GPIO PB10 (5 V-tolerant). Alt: I2C1_SCL, USART2_TX. Remap: TIMER1_CH2.
22 PB11 bidirectional GPIO PB11 (5 V-tolerant). Alt: I2C1_SDA, USART2_RX. Remap: TIMER1_CH3.
23 VSS_1 power_in Digital ground.
24 VDD_1 power_in Digital supply (2.6-3.6 V).
25 PB12 bidirectional GPIO PB12 (5 V-tolerant). Alt: SPI1_NSS, I2S1_WS, I2C1_SMBA, USART2_CK, TIMER0_BRKIN, CAN1_RX.
26 PB13 bidirectional GPIO PB13 (5 V-tolerant). Alt: SPI1_SCK, I2S1_CK, USART2_CTS, TIMER0_CH0_ON, CAN1_TX, I2C1_TXFRAME.
27 PB14 bidirectional GPIO PB14 (5 V-tolerant). Alt: SPI1_MISO, USART2_RTS, TIMER0_CH1_ON, TIMER11_CH0.
28 PB15 bidirectional GPIO PB15 (5 V-tolerant). Alt: SPI1_MOSI, I2S1_SD, TIMER0_CH2_ON, TIMER11_CH1.
29 PA8 bidirectional GPIO PA8 (5 V-tolerant). Alt: USART0_CK, TIMER0_CH0, CK_OUT0, USBFS_SOF, CTC_SYNC.
30 PA9 bidirectional GPIO PA9 (5 V-tolerant). Alt: USART0_TX, TIMER0_CH1, USBFS_VBUS.
31 PA10 bidirectional GPIO PA10 (5 V-tolerant). Alt: USART0_RX, TIMER0_CH2, USBFS_ID.
32 PA11 bidirectional GPIO PA11 (5 V-tolerant). Alt: USART0_CTS, CAN0_RX, USBFS_DM (USB full-speed D-), TIMER0_CH3.
33 PA12 bidirectional GPIO PA12 (5 V-tolerant). Alt: USART0_RTS, CAN0_TX, USBFS_DP (USB full-speed D+), TIMER0_ETI.
34 PA13/JTMS/SWDIO bidirectional SWD data / JTAG TMS by default. Can be released as PA13 GPIO via AFIO debug remap.
35 VSS_2 power_in Digital ground.
36 VDD_2 power_in Digital supply (2.6-3.6 V).
37 PA14/JTCK/SWCLK bidirectional SWD clock / JTAG TCK by default. Can be released as PA14 GPIO via AFIO debug remap.
38 PA15/JTDI bidirectional JTAG TDI by default. Alt: SPI2_NSS, I2S2_WS. Remap: TIMER1_CH0/ETI, PA15, SPI0_NSS.
39 PB3/JTDO bidirectional JTAG TDO / SWO by default. Alt: SPI2_SCK, I2S2_CK. Remap: TIMER1_CH1, PB3, SPI0_SCK.
40 PB4/NJTRST bidirectional JTAG NJTRST by default. Alt: SPI2_MISO, I2C0_TXFRAME. Remap: TIMER2_CH0, PB4, SPI0_MISO.
41 PB5 bidirectional GPIO PB5. Alt: I2C0_SMBA, SPI2_MOSI, I2S2_SD. Remap: TIMER2_CH1, SPI0_MOSI, CAN1_RX.
42 PB6 bidirectional GPIO PB6 (5 V-tolerant). Alt: I2C0_SCL, TIMER3_CH0. Remap: USART0_TX, CAN1_TX, SPI0_IO2.
43 PB7 bidirectional GPIO PB7 (5 V-tolerant). Alt: I2C0_SDA, TIMER3_CH1. Remap: USART0_RX, SPI0_IO3.
44 BOOT0 input Boot-mode select input, sampled at reset together with BOOT1 (PB2).
45 PB8 bidirectional GPIO PB8 (5 V-tolerant). Alt: TIMER3_CH2, TIMER9_CH0. Remap: I2C0_SCL, CAN0_RX.
46 PB9 bidirectional GPIO PB9 (5 V-tolerant). Alt: TIMER3_CH3, TIMER10_CH0. Remap: I2C0_SDA, CAN0_TX.
47 VSS_3 power_in Digital ground.
48 VDD_3 power_in Digital supply (2.6-3.6 V).

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.

  • GD32C103CBT6
  • GD32C103CBT6CET6
  • GD32C103CBT6C8T6
  • GD32C103CBT6TBU6
  • GD32C103CBT6TEU6
  • GD32C103CBT6RBT6
  • GD32C103CBT6RET6
  • GD32C103CBT6R8T6
  • GD32C103CBT6VBT6
  • GD32C103CBT6VET6
  • GD32C103CBT6V8T6
  • GD32C103CBT6ZBH6
  • GD32C103CBT6ZEH6

CAD (KiCad official)

  • Symbol: GD32C103CBT6
  • Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
  • 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
  • 3D model files: gd32c103cbt6-etched.step / gd32c103cbt6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); gd32c103cbt6.step / gd32c103cbt6.glb are the bare package body.

Provenance

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

  • Datasheet: GigaDevice Semicon Beijing datasheet (99 pp, sha256 bd4df4decb53d015, 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