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STM32F100CBT6B
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSTM32F100CBT6B
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)
STM32F100CBT6B from STMicroelectronics, 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 domain power supply for RTC, backup registers, and 32 kHz oscillator; 1.8 to 3.6 V. |
| 2 | PC13-TAMPER-RTC | bidirectional | I/O port C pin 13; 5V tolerant; output mode restricted to 2 MHz with 30 pF load maximum due to 3 mA current limit through power switch. |
| 3 | PC14-OSC32_IN | bidirectional | I/O port C pin 14; 5V tolerant; output mode restricted to 2 MHz with 30 pF load maximum due to 3 mA current limit through power switch. |
| 4 | PC15-OSC32_OUT | bidirectional | I/O port C pin 15; 5V tolerant; output mode restricted to 2 MHz with 30 pF load maximum due to 3 mA current limit through power switch. |
| 5 | OSC_IN | input | External high-speed oscillator input for 4 to 24 MHz crystal or clock source; can be remapped to PD0. |
| 6 | OSC_OUT | output | External high-speed oscillator output connected to crystal resonator; can be remapped to PD1. |
| 7 | NRST | input | Active-low reset input with 30-50 kΩ internal pull-up resistor; input low level voltage maximum 0.8 V. |
| 8 | VSSA | power_in | Analog ground for ADC, DAC, voltage regulator, and phase-locked loop circuits. |
| 9 | VDDA | power_in | Analog power supply for ADC, DAC, and analog circuits; 2.4 to 3.6 V when ADC or DAC is used. |
| 10 | PA0-WKUP | bidirectional | I/O port A pin 0 with wakeup capability; alternate functions include USART2_CTS, ADC1 channel 0, and timer input. |
| 11 | PA1 | bidirectional | I/O port A pin 1; alternate functions include USART2_RTS, ADC1 channel 1, and timer input. |
| 12 | PA2 | bidirectional | I/O port A pin 2; alternate functions include USART2_TX, ADC1 channel 2, and timer input/output. |
| 13 | PA3 | bidirectional | I/O port A pin 3; alternate functions include USART2_RX, ADC1 channel 3, and timer input/output. |
| 14 | PA4 | bidirectional | I/O port A pin 4; alternate functions include SPI1_NSS, USART2_CK, ADC1 channel 4, and DAC1 output. |
| 15 | PA5 | bidirectional | I/O port A pin 5; alternate functions include SPI1_SCK, ADC1 channel 5, and DAC2 output. |
| 16 | PA6 | bidirectional | I/O port A pin 6; 5V tolerant; alternate functions include SPI1_MISO, ADC1 channel 6, and timer input/output. |
| 17 | PA7 | bidirectional | I/O port A pin 7; 5V tolerant; alternate functions include SPI1_MOSI, ADC1 channel 7, and timer input/output. |
| 18 | PB0 | bidirectional | I/O port B pin 0; alternate functions include ADC1 channel 8 and timer input/output. |
| 19 | PB1 | bidirectional | I/O port B pin 1; alternate functions include ADC1 channel 9 and timer input/output. |
| 20 | PB2 | bidirectional | I/O port B pin 2; 5V tolerant; alternate function BOOT1 for boot mode selection. |
| 21 | PB10 | bidirectional | I/O port B pin 10; 5V tolerant; alternate functions include I2C2_SCL, USART3_TX, timer input/output, and HDMI-CEC. |
| 22 | PB11 | bidirectional | I/O port B pin 11; 5V tolerant; alternate functions include I2C2_SDA, USART3_RX, and timer input/output. |
| 23 | VSS_1 | power_in | Ground connection for digital circuits and I/O pins. |
| 24 | VDD_1 | power_in | Main power supply for digital circuits; 2.0 to 3.6 V. |
| 25 | PB12 | bidirectional | I/O port B pin 12; 5V tolerant; alternate functions include SPI2_NSS, I2C2_SMBA, timer input, and USART3_CK. |
| 26 | PB13 | bidirectional | I/O port B pin 13; 5V tolerant; alternate functions include SPI2_SCK, timer input, and USART3_CTS. |
| 27 | PB14 | bidirectional | I/O port B pin 14; 5V tolerant; alternate functions include SPI2_MISO, timer input/output, and USART3_RTS. |
| 28 | PB15 | bidirectional | I/O port B pin 15; 5V tolerant; alternate functions include SPI2_MOSI and timer input/output. |
| 29 | PA8 | bidirectional | I/O port A pin 8; 5V tolerant; alternate functions include USART1_CK, MCO clock output, and timer input/output. |
| 30 | PA9 | bidirectional | I/O port A pin 9; 5V tolerant; alternate functions include USART1_TX and timer input/output. |
| 31 | PA10 | bidirectional | I/O port A pin 10; 5V tolerant; alternate functions include USART1_RX and timer input/output. |
| 32 | PA11 | bidirectional | I/O port A pin 11; 5V tolerant; alternate functions include USART1_CTS and timer input/output. |
| 33 | PA12 | bidirectional | I/O port A pin 12; 5V tolerant; alternate functions include USART1_RTS and timer input. |
| 34 | PA13 | bidirectional | I/O port A pin 13; 5V tolerant; JTAG Test Mode Select/Serial Wire Debug I/O line shared with debugging interface. |
| 35 | VSS_2 | power_in | Ground connection for digital circuits and I/O pins. |
| 36 | VDD_2 | power_in | Main power supply for digital circuits; 2.0 to 3.6 V. |
| 37 | PA14 | bidirectional | I/O port A pin 14; 5V tolerant; JTAG Test Clock/Serial Wire Debug Clock line shared with debugging interface. |
| 38 | PA15 | bidirectional | I/O port A pin 15; 5V tolerant; alternate functions include JTAG Test Data In, timer input/output, and SPI1_NSS. |
| 39 | PB3 | bidirectional | I/O port B pin 3; 5V tolerant; alternate functions include JTAG Test Data Out, timer input/output, and SPI1_SCK. |
| 40 | PB4 | bidirectional | I/O port B pin 4; 5V tolerant; alternate functions include JTAG not Test Reset, timer input/output, and SPI1_MISO. |
| 41 | PB5 | bidirectional | I/O port B pin 5; alternate functions include I2C1_SMBA, timer input, and SPI1_MOSI. |
| 42 | PB6 | bidirectional | I/O port B pin 6; 5V tolerant; alternate functions include I2C1_SCL, timer input/output, and USART1_TX. |
| 43 | PB7 | bidirectional | I/O port B pin 7; 5V tolerant; alternate functions include I2C1_SDA, timer input/output, and USART1_RX. |
| 44 | BOOT0 | input | Boot mode selection pin sampled at reset to select boot from Flash memory, system memory, or embedded SRAM. |
| 45 | PB8 | bidirectional | I/O port B pin 8; 5V tolerant; alternate functions include timer input/output, I2C1_SCL, and HDMI-CEC. |
| 46 | PB9 | bidirectional | I/O port B pin 9; 5V tolerant; alternate functions include timer input/output and I2C1_SDA. |
| 47 | VSS_3 | power_in | Ground connection for digital circuits and I/O pins. |
| 48 | VDD_3 | power_in | Main power supply for digital circuits; 2.0 to 3.6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 48 |
CAD (KiCad official)
- Symbol:
STM32F100CBT6B - Footprint:
Package_QFP:LQFP-48_7x7mm_P0.5mm - 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32f100cbt6b-etched.step/stm32f100cbt6b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32f100cbt6b.step/stm32f100cbt6b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (88 pp, sha256
c810aafb848820fa, retrieved 2026-09-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).