STMicroelectronics STM32F100C8T6BTR

Overview

STM32F100C8T6BTR from STMicroelectronics is a low-density value-line ARM® Cortex®-M3 microcontroller with 64 KB Flash, 8 KB SRAM, and 24 MHz max CPU frequency. It integrates dual 12-bit DACs, a 12-bit 1.2 µs ADC (16-channel), three 16-bit timers with PWM/OC/IC capability, and up to eight communication interfaces including USART, SPI, I²C, and CEC - deployed in industrial sensor nodes requiring deterministic real-time control and analog signal conditioning.

For engineers reviewing the STM32F100C8T6BTR datasheet, STM32F100C8T6BTR pinout, STM32F100C8T6BTR application, or STM32F100C8T6BTR equivalent, key selection criteria include its 48-pin LQFP package, 2.0–3.6 V supply range, 5 V-tolerant I/Os (37 pins), integrated RTC with VBAT backup, and SWD/JTAG debug support for embedded firmware development and production programming.

Technical Context

The device implements an ARM Cortex-M3 core with single-cycle multiplication and hardware division, delivering 1.25 DMIPS/MHz performance at 24 MHz. Its clock system includes a factory-trimmed 8 MHz internal RC oscillator, 40 kHz LSI for RTC, and PLL support for CPU clock scaling - all managed via dedicated reset and power control logic with programmable voltage detector (PVD).

DMA operation is handled by a 7-channel controller supporting concurrent transfers to timers, ADC, DAC, USART, SPI, and I²C peripherals. The NVIC provides 64 interrupt channels with configurable priority, while EXTI routes external events to up to 16 GPIO pins mapped across multiple ports for flexible wake-up and event handling.

Key Specifications

Pinout & Package

LQFP48 package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified. Pin count and layout conform to STM32F100C8T6BTR-specific mechanical drawing (DocID16455 Rev 9, Figure 5).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32F100C8T6BTR, the STM32F070F6P6 offers lower cost and power but sacrifices DAC functionality and RTC accuracy, while the STM32G030F6P6 delivers higher performance and security yet omits DACs entirely - making the F100C8T6BTR uniquely suited for mixed-signal control tasks requiring both precision analog output and robust real-time scheduling.

Availability

STM32F100C8T6BTR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, portable medical devices, and PLC I/O expansion modules requiring stable component supply and long-term manufacturing continuity.

Supply support for STM32F100C8T6BTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, MEMS, and automotive semiconductors since 1987.

The STM32F100 value line targets cost-sensitive industrial and consumer applications requiring high analog integration, low power, and proven ARM Cortex-M3 architecture - optimized for sensor fusion, motor control, and human-machine interface subsystems.

FAQ

What is the maximum operating frequency of the STM32F100C8T6BTR?

The STM32F100C8T6BTR operates at a maximum CPU frequency of 24 MHz, achieved via its internal PLL driven by either the 8 MHz HSI or an external 4–24 MHz crystal. This frequency is validated across the full industrial temperature range (–40°C to +85°C) and 2.0–3.6 V supply, delivering 1.25 DMIPS/MHz performance per Dhrystone 2.1 benchmark.

Does the STM32F100C8T6BTR support USB connectivity?

No, the STM32F100C8T6BTR does not include a USB peripheral. It provides up to eight serial interfaces: three USARTs (with LIN/IRDA support), two SPIs (12 Mbit/s), two I²C buses (SMBus/PMBus compatible), and one CEC interface - but no USB Device or OTG controller. For USB-enabled designs, consider STM32F103 or STM32G0 series variants.

How many analog-to-digital converter (ADC) channels does it have?

The STM32F100C8T6BTR integrates one 12-bit ADC with up to 16 external input channels (including 16 GPIO-mapped pins and internal temperature sensor/Vrefint). Conversion time is 1.2 µs per sample, and the ADC supports scan mode, continuous conversion, and injected channel sequencing - all configurable via registers without CPU intervention.

Is the STM32F100C8T6BTR pin-compatible with other STM32F100 variants?

Yes, the STM32F100C8T6BTR in LQFP48 is pin-compatible with other STM32F100x8 devices in the same package (e.g., STM32F100C8T6), sharing identical pin definitions and electrical characteristics. However, it is not pin-compatible with STM32F100xB (LQFP100) or STM32F100x4/x6 variants due to differing Flash sizes, peripheral enablement, and package footprints.