STM32F103C8T6

STMicroelectronicsActive

Arm Cortex-M3 32-bit MCU, 72 MHz, 64 KB Flash, 20 KB SRAM. USB, CAN, seven timers, two ADCs, nine communication interfaces. The workhorse Blue Pill microcontroller.

Package LQFP-48Body 7 x 7 x 1.4 mmPitch 0.5 mm Pins 48Core Cortex-M3
The 3D, symbol, and footprint viewers at the top of the page are a single cross-linked set (hover a pin, pad, or 3D lead and they light up together, with layer toggles and datasheet tooltips). The datasheet pin map below is cross-linked to them too — hover a row to light the matching pin in the viewers above. Downloadable CAD and the datasheet PDF are on the Files tab (.kicad_sym, .kicad_mod, .step, .glb).

Datasheet key pages the pages worth looking at first · pick a page, click it to go full screen

Featuresdatasheet p.1
Features

Specifications microcontroller

CoreARM Cortex-M3 CATALOG
Max frequency72 MHz CATALOG
Flash64 KB CATALOG
RAM20 KB CATALOG
GPIO37 CATALOG
Supply (min)2 V CATALOG
Supply (max)3.6 V CATALOG

Peripherals

TIM x4 (16-bit)ADC x2 (12-bit)USARTSPII2CCANUSB 2.0 FS

Provenance

Extracted by ds2sfthe datasheet's pin knowledge, inline and cited — not just a pinout
48/48
pins with datasheet function
6
functional groups
3
electrical types
~104
chars of detail / pin
POWER 9GPIO 26TIMING 4CONTROL 2USB 2DEBUG 5
ST datasheet · 116 pp sha256 0596dd57693c ✓ cites datasheet pages ✓ refuses to fabricate CAD · KiCad official
Every pin in the map above carries the datasheet's actual function, alternate-function muxing, and electrical type — pulled by ds2sf and page-cited, so you get the datasheet's pin knowledge without opening the PDF. Muxed pins are flagged for review; nothing is invented. Footprint pads carry KiCad pinfunction/pintype; 3D board-context via cadquery + step2glb. Source: ST STM32F103x8/xB (CAD CC-BY-SA 4.0).