component
STM32F103CBT7TR
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.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424
{
"schema_version": 1,
"type": "component",
"slug": "stm32f103cbt7tr",
"title": "STM32F103CBT7TR",
"brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"embedded processors & controllers",
"stm32f103cbt7tr",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "STM32F103CBT7TR",
"manufacturer": "STMicroelectronics",
"package": "LQFP-48(7x7)",
"pin_count": 48,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontrollers (MCU/MPU/SOC)",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588943058578100224",
"parts": {
"symbol": "stm32f103cbt7tr.kicad_sym",
"footprint": "stm32f103cbt7tr.kicad_mod",
"model_3d": "stm32f103cbt7tr-hero.glb",
"model_3d_plain": "stm32f103cbt7tr.glb",
"model_3d_step": "stm32f103cbt7tr-etched.step",
"model_3d_step_plain": "stm32f103cbt7tr.step",
"lbr": "stm32f103cbt7tr.lbr"
},
"distributor_links": {
"lcsc": 2055301,
"digikey": "STM32F103CBT7TR-ND",
"mouser": "511-STM32F103CBT7TR"
},
"distributor_check": {
"checked_at": "2026-10-06T17:08:31Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "STM32F103CBT7TR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "511-STM32F103CBT7TR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "VBAT",
"type": "power_in",
"description": "Battery backup supply voltage 2.0 to 3.6 V for RTC and backup register domain."
},
{
"number": "2",
"name": "PC13",
"type": "bidirectional",
"description": "GPIO PC13 with power-switch controlled supply (max 3 mA), TAMPER-RTC alternate function."
},
{
"number": "3",
"name": "PC14",
"type": "bidirectional",
"description": "GPIO PC14 with power-switch controlled supply (max 3 mA), OSC32_IN 32.768 kHz oscillator input alternate function."
},
{
"number": "4",
"name": "PC15",
"type": "bidirectional",
"description": "GPIO PC15 with power-switch controlled supply (max 3 mA), OSC32_OUT 32.768 kHz oscillator output alternate function."
},
{
"number": "5",
"name": "OSC_IN",
"type": "input",
"description": "High-speed external oscillator 4 to 16 MHz input for main clock and PLL source."
},
{
"number": "6",
"name": "OSC_OUT",
"type": "output",
"description": "High-speed external oscillator 4 to 16 MHz output feedback from crystal, remappable to PD1."
},
{
"number": "7",
"name": "NRST",
"type": "input",
"description": "Active-low reset input with internal pull-up resistor and debounce filter; remappable with software."
},
{
"number": "8",
"name": "VSSA",
"type": "power_in",
"description": "Ground reference for analog circuits including ADC, temperature sensor, and VREF supply."
},
{
"number": "9",
"name": "VDDA",
"type": "power_in",
"description": "Analog power supply 2.0 to 3.6 V for ADC and internal voltage reference."
},
{
"number": "10",
"name": "PA0",
"type": "bidirectional",
"description": "GPIO PA0 with wake-up input, USART2_CTS, ADC12_IN0, TIM2_CH1_ETR alternate functions."
},
{
"number": "11",
"name": "PA1",
"type": "bidirectional",
"description": "GPIO PA1 with USART2_RTS, ADC12_IN1, TIM2_CH2 alternate functions."
},
{
"number": "12",
"name": "PA2",
"type": "bidirectional",
"description": "GPIO PA2 with USART2_TX, ADC12_IN2, TIM2_CH3 alternate functions."
},
{
"number": "13",
"name": "PA3",
"type": "bidirectional",
"description": "GPIO PA3 with USART2_RX, ADC12_IN3, TIM2_CH4 alternate functions."
},
{
"number": "14",
"name": "PA4",
"type": "bidirectional",
"description": "GPIO PA4 with SPI1_NSS, USART2_CK, ADC12_IN4 alternate functions."
},
{
"number": "15",
"name": "PA5",
"type": "bidirectional",
"description": "GPIO PA5 with SPI1_SCK and ADC12_IN5 alternate functions."
},
{
"number": "16",
"name": "PA6",
"type": "bidirectional",
"description": "GPIO PA6 with SPI1_MISO, ADC12_IN6, TIM3_CH1 alternate functions; remappable to TIM1_BKIN."
},
{
"number": "17",
"name": "PA7",
"type": "bidirectional",
"description": "GPIO PA7 with SPI1_MOSI, ADC12_IN7, TIM3_CH2 alternate functions; remappable to TIM1_CH1N."
},
{
"number": "18",
"name": "PB0",
"type": "bidirectional",
"description": "GPIO PB0 with ADC12_IN8, TIM3_CH3 alternate functions; remappable to TIM1_CH2N."
},
{
"number": "19",
"name": "PB1",
"type": "bidirectional",
"description": "GPIO PB1 with ADC12_IN9, TIM3_CH4 alternate functions; remappable to TIM1_CH3N."
},
{
"number": "20",
"name": "PB2",
"type": "bidirectional",
"description": "GPIO PB2 with BOOT1 strapping function to select boot from flash or system memory at power-up."
},
{
"number": "21",
"name": "PB10",
"type": "bidirectional",
"description": "GPIO PB10 with I2C2_SCL, USART3_TX, TIM2_CH3 alternate functions."
},
{
"number": "22",
"name": "PB11",
"type": "bidirectional",
"description": "GPIO PB11 with I2C2_SDA, USART3_RX, TIM2_CH4 alternate functions."
},
{
"number": "23",
"name": "VSS_1",
"type": "power_in",
"description": "Ground reference for digital circuits and I/O supply decoupling."
},
{
"number": "24",
"name": "VDD_1",
"type": "power_in",
"description": "Digital power supply 2.0 to 3.6 V for core logic and I/O buffers."
},
{
"number": "25",
"name": "PB12",
"type": "bidirectional",
"description": "GPIO PB12 with SPI2_NSS, I2C2_SMBal, USART3_CK, TIM1_BKIN alternate functions."
},
{
"number": "26",
"name": "PB13",
"type": "bidirectional",
"description": "GPIO PB13 with SPI2_SCK, USART3_CTS, TIM1_CH1N alternate functions."
},
{
"number": "27",
"name": "PB14",
"type": "bidirectional",
"description": "GPIO PB14 with SPI2_MISO, USART3_RTS, TIM1_CH2N alternate functions."
},
{
"number": "28",
"name": "PB15",
"type": "bidirectional",
"description": "GPIO PB15 with SPI2_MOSI, TIM1_CH3N alternate functions."
},
{
"number": "29",
"name": "PA8",
"type": "bidirectional",
"description": "GPIO PA8 with USART1_CK, TIM1_CH1, MCO alternate functions."
},
{
"number": "30",
"name": "PA9",
"type": "bidirectional",
"description": "GPIO PA9 with USART1_TX, TIM1_CH2 alternate functions."
},
{
"number": "31",
"name": "PA10",
"type": "bidirectional",
"description": "GPIO PA10 with USART1_RX, TIM1_CH3 alternate functions."
},
{
"number": "32",
"name": "PA11",
"type": "bidirectional",
"description": "GPIO PA11 with USART1_CTS, CAN_RX, USB_DM, TIM1_CH4 alternate functions."
},
{
"number": "33",
"name": "PA12",
"type": "bidirectional",
"description": "GPIO PA12 with USART1_RTS, CAN_TX, USB_DP, TIM1_ETR alternate functions."
},
{
"number": "34",
"name": "PA13",
"type": "bidirectional",
"description": "JTMS/SWDIO debug interface serial wire data I/O pin; remappable to GPIO PA13."
},
{
"number": "35",
"name": "VSS_2",
"type": "power_in",
"description": "Ground reference for digital circuits and I/O supply decoupling."
},
{
"number": "36",
"name": "VDD_2",
"type": "power_in",
"description": "Digital power supply 2.0 to 3.6 V for core logic and I/O buffers."
},
{
"number": "37",
"name": "PA14",
"type": "bidirectional",
"description": "JTCK/SWCLK debug interface serial wire clock pin; remappable to GPIO PA14."
},
{
"number": "38",
"name": "PA15",
"type": "bidirectional",
"description": "GPIO PA15 with JTDI, TIM2_CH1_ETR, SPI1_NSS alternate functions."
},
{
"number": "39",
"name": "PB3",
"type": "bidirectional",
"description": "GPIO PB3 with JTDO, TIM2_CH2, SPI1_SCK alternate functions; remappable to TRACESWO."
},
{
"number": "40",
"name": "PB4",
"type": "bidirectional",
"description": "GPIO PB4 with JNTRST, TIM3_CH1, SPI1_MISO alternate functions."
},
{
"number": "41",
"name": "PB5",
"type": "bidirectional",
"description": "GPIO PB5 with I2C1_SMBal, TIM3_CH2, SPI1_MOSI alternate functions."
},
{
"number": "42",
"name": "PB6",
"type": "bidirectional",
"description": "GPIO PB6 with I2C1_SCL, TIM4_CH1, USART1_TX alternate functions; 5V-tolerant for USART1_TX."
},
{
"number": "43",
"name": "PB7",
"type": "bidirectional",
"description": "GPIO PB7 with I2C1_SDA, TIM4_CH2, USART1_RX alternate functions; 5V-tolerant for USART1_RX."
},
{
"number": "44",
"name": "BOOT0",
"type": "input",
"description": "Boot configuration input pin: 0 selects boot from flash, 1 selects boot from system memory."
},
{
"number": "45",
"name": "PB8",
"type": "bidirectional",
"description": "GPIO PB8 with TIM4_CH3, I2C1_SCL, CAN_RX alternate functions."
},
{
"number": "46",
"name": "PB9",
"type": "bidirectional",
"description": "GPIO PB9 with TIM4_CH4, I2C1_SDA, CAN_TX alternate functions."
},
{
"number": "47",
"name": "VSS_3",
"type": "power_in",
"description": "Ground reference for digital circuits and I/O supply decoupling."
},
{
"number": "48",
"name": "VDD_3",
"type": "power_in",
"description": "Digital power supply 2.0 to 3.6 V for core logic and I/O buffers."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-4-5-20251001",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: PC13, PC14, PC15 supply current limited to 3 mA max through power switch (see page 33 note 5); Debug pins PA13 and PA14 are JTAG interface after reset and require remapping to GPIO in firmware (s; BOOT0 strapping must be set during power-up; pulling low selects boot from flash, pulling high selec"
],
"pages_sent": 66,
"cost_usd": 0.4921,
"at": "2026-10-06T17:08:09"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588943058578100224",
"pages": 117,
"sha256": "e3b559b4227b1427",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 48,
"described": 48,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
}
},
"metadata": {
"specs": {
"Manufacturer": "STMicroelectronics",
"Package": "LQFP-48(7x7)",
"Category": "Embedded Processors & Controllers",
"Pins": "48"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"stm32f103cbt7tr"
],
"discovery_pitch": "STM32F103CBT7TR (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"stm32f103cbt7tr.kicad_sym",
"stm32f103cbt7tr.kicad_mod",
"stm32f103cbt7tr.glb",
"stm32f103cbt7tr.step",
"stm32f103cbt7tr.lbr",
"docs/hero.png",
"docs/stm32f103cbt7tr-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"stm32f103cbt7tr-hero.glb",
"stm32f103cbt7tr-hero.overlay.json"
],
"visibility": {
"public": true
}
}