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Contents

README

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STM32F100C8T6BTR

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)

STM32F100C8T6BTR from STMicroelectronics, in a LQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model, then checked against ST open pin data); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VBAT power_in Battery supply voltage and VDDA/VREF+ supply source, 1.8 to 3.6 V DC.
2 PC13-TAMPER-RTC bidirectional GPIO Port C bit 13, RTC tamper control and low-speed GPIO, max 2 MHz output with 30 pF load.
3 PC14-OSC32_IN input 32 kHz external oscillator input pin for real-time clock, 32.768 kHz crystal oscillator pin.
4 PC15-OSC32_OUT output 32 kHz external oscillator output pin for real-time clock, 32.768 kHz crystal oscillator pin.
5 OSC_IN input Main oscillator input pin, supports 4-24 MHz crystal oscillator or external clock source.
6 OSC_OUT output Main oscillator output pin, supports 4-24 MHz crystal oscillator or external clock source.
7 NRST bidirectional Active low reset pin, can be used as input reset or open-drain output with external pull-up.
8 VSSA power_in Analog supply ground, 0 V reference for ADC, DAC, and analog peripherals.
9 VDDA power_in Analog supply voltage, 2.4 to 3.6 V DC, powers ADC, DAC, and PLL.
10 PA0-WKUP bidirectional GPIO Port A bit 0, wake-up pin, USART2_CTS, ADC1_IN0, TIM2_CH1/ETR alternate functions.
11 PA1 bidirectional GPIO Port A bit 1, USART2_RTS, ADC1_IN1, TIM2_CH2 alternate functions.
12 PA2 bidirectional GPIO Port A bit 2, USART2_TX, ADC1_IN2, TIM2_CH3, TIM15_CH1 alternate functions.
13 PA3 bidirectional GPIO Port A bit 3, USART2_RX, ADC1_IN3, TIM2_CH4, TIM15_CH2 alternate functions.
14 PA4 bidirectional GPIO Port A bit 4, SPI1_NSS, ADC1_IN4, USART2_CK, DAC1_OUT alternate functions.
15 PA5 bidirectional GPIO Port A bit 5, SPI1_SCK, ADC1_IN5, DAC2_OUT alternate functions.
16 PA6 bidirectional GPIO Port A bit 6, 5V tolerant, SPI1_MISO, ADC1_IN6, TIM3_CH1 default, remappable to TIM1_BKIN/TIM16_CH1.
17 PA7 bidirectional GPIO Port A bit 7, 5V tolerant, SPI1_MOSI, ADC1_IN7, TIM3_CH2 default, remappable to TIM1_CH1N/TIM17_CH1.
18 PB0 bidirectional GPIO Port B bit 0, ADC1_IN8, TIM3_CH3 default, remappable to TIM1_CH2N.
19 PB1 bidirectional GPIO Port B bit 1, ADC1_IN9, TIM3_CH4 default, remappable to TIM1_CH3N.
20 PB2 bidirectional GPIO Port B bit 2 / BOOT1 pin, 5V tolerant, selects boot mode on device reset.
21 PB10 bidirectional GPIO Port B bit 10, 5V tolerant, I2C2_SCL, USART3_TX default, remappable to TIM2_CH3/HDMI_CEC.
22 PB11 bidirectional GPIO Port B bit 11, 5V tolerant, I2C2_SDA, USART3_RX default, remappable to TIM2_CH4.
23 VSS_1 power_in Digital supply ground, 0 V reference for digital logic.
24 VDD_1 power_in Digital supply voltage, 2.0 to 3.6 V DC, powers CPU core and digital logic.
25 PB12 bidirectional GPIO Port B bit 12, 5V tolerant, SPI2_NSS, I2C2_SMBA, TIM1_BKIN, USART3_CK alternate functions.
26 PB13 bidirectional GPIO Port B bit 13, 5V tolerant, SPI2_SCK, TIM1_CH1N default, remappable to USART3_CTS.
27 PB14 bidirectional GPIO Port B bit 14, 5V tolerant, SPI2_MISO, TIM1_CH2N, USART3_RTS default, remappable to TIM15_CH1.
28 PB15 bidirectional GPIO Port B bit 15, 5V tolerant, SPI2_MOSI, TIM1_CH3N, TIM15_CH1N default, remappable to TIM15_CH2.
29 PA8 bidirectional GPIO Port A bit 8, 5V tolerant, USART1_CK, MCO (master clock output), TIM1_CH1 alternate functions.
30 PA9 bidirectional GPIO Port A bit 9, 5V tolerant, USART1_TX, TIM1_CH2, TIM15_BKIN alternate functions.
31 PA10 bidirectional GPIO Port A bit 10, 5V tolerant, USART1_RX, TIM1_CH3, TIM17_BKIN alternate functions.
32 PA11 bidirectional GPIO Port A bit 11, 5V tolerant, USART1_CTS, TIM1_CH4 alternate functions.
33 PA12 bidirectional GPIO Port A bit 12, 5V tolerant, USART1_RTS, TIM1_ETR alternate functions.
34 PA13 bidirectional JTAG Test Mode Select / Serial Wire Debug I/O (JTMS-SWDIO), 5V tolerant, shared debug interface pin.
35 VSS_2 power_in Digital supply ground, 0 V reference for digital logic.
36 VDD_2 power_in Digital supply voltage, 2.0 to 3.6 V DC, powers CPU core and digital logic.
37 PA14 bidirectional JTAG Test Clock / Serial Wire Clock (JTCK-SWCLK), 5V tolerant, shared debug interface pin.
38 PA15 bidirectional JTAG Test Data In (JTDI), 5V tolerant, remappable to TIM2_CH1/ETR, SPI1_NSS, or GPIO PA15.
39 PB3 bidirectional JTAG Test Data Out / GPIO Port B bit 3, 5V tolerant, remappable to TIM2_CH2, trace output, or SPI1_SCK.
40 PB4 bidirectional JTAG Test Reset (NJTRST), 5V tolerant, remappable to GPIO PB4, TIM3_CH1, or SPI1_MISO.
41 PB5 bidirectional GPIO Port B bit 5, I2C1_SMBA, TIM16_BKIN default, remappable to TIM3_CH2 or SPI1_MOSI.
42 PB6 bidirectional GPIO Port B bit 6, 5V tolerant, I2C1_SCL, TIM4_CH1 default, remappable to TIM16_CH1N or USART1_TX.
43 PB7 bidirectional GPIO Port B bit 7, 5V tolerant, I2C1_SDA, TIM17_CH1N default, remappable to TIM4_CH2 or USART1_RX.
44 BOOT0 input Boot pin 0, selects boot source from flash memory (high) or SRAM/system memory (low) on device reset.
45 PB8 bidirectional GPIO Port B bit 8, 5V tolerant, TIM4_CH3, TIM16_CH1, CEC default, remappable to I2C1_SCL.
46 PB9 bidirectional GPIO Port B bit 9, 5V tolerant, TIM4_CH4, TIM17_CH1 default, remappable to I2C1_SDA.
47 VSS_3 power_in Digital supply ground, 0 V reference for digital logic.
48 VDD_3 power_in Digital supply voltage, 2.0 to 3.6 V DC, powers CPU core and digital logic.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package LQFP-48(7x7)
Category Embedded Processors & Controllers
Pins 48

CAD (KiCad official)

  • Symbol: STM32F100C8T6BTR
  • Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
  • 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
  • 3D model files: stm32f100c8t6btr-etched.step / stm32f100c8t6btr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32f100c8t6btr.step / stm32f100c8t6btr.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (96 pp, sha256 360e3be010cabad4, retrieved 2026-10-06, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF