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STMicroelectronics STM32F100C4T7B — Microcontrollers & Processors (MCU / MPU / DSP)

STM32F100C4T7B ARM Cortex-M3 MCU, 24 MHz, 16 KB Flash

MPNSTM32F100C4T7B
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STMicroelectronics STM32F100C4T7B, ARM Cortex-M3 32-bit MCU, 24 MHz, 16 KB Flash, 4 KB RAM, 48-LQFP, -40 to 105°C, 2 V to 3.6 V supply.

$5.0600Ref. price · indicative, final on quote
STMicroelectronics STM32F100C4T7B datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32F100C4T7B specifications
ParameterValue
SeriesSTM32F1
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2V ~ 3.6V
Operating temperature-40°C~105°C(TA)
Speed24MHz
PackageTray
RAM size4K x 8
Core size32-Bit Single-Core
PeripheralsDMA, PDR, POR, PVD, PWM, Temp Sensor, WDT
ConnectivityI²C, IrDA, LINbus, SPI, UART/USART
Number of i (O)37
Core processorARM® Cortex®-M3
Case48-LQFP
Data convertersA/D 10x12b; D/A 2x12b
Program memory size16KB (16K x 8)

Product details

24 MHz Cortex-M3 with 16 KB Flash — entry-density control MCU

This part is sized for single-purpose control loops, state machines, and simple communication stacks — not for a full RTOS with TCP/IP. The 4 KB RAM (organized as 4K x 8) handles a modest call stack, a few hundred bytes of global data, and a UART or SPI buffer. If your application needs over-the-air update staging or a large lookup table, step up to the 32 KB or 64 KB Flash siblings in the same 48-LQFP footprint.

48-LQFP — layout and supply rails

The 37 I/O lines include most peripheral signals; check the alternate-function mapping in the datasheet to avoid pin conflicts. Decouple with a 100 nF ceramic per VDD pair plus a 4.7 µF bulk cap.

Frequently asked questions

What is the closest pin-compatible alternative to STM32F100C4T7B in this component family?

For higher Flash density in the same 48-LQFP footprint, consider the STM32F100C6 (32 KB Flash) or STM32F100C8 (64 KB Flash) — verify pin compatibility against the datasheet.

What is STM32F100C4T7B's listed speed?

The core runs at 24 MHz, which is the maximum clock frequency for this value-line Cortex-M3. At this speed, the Flash requires zero wait states for single-cycle instruction fetch.