STMicroelectronics STM32F100C4T6BTR

Overview

STM32F100C4T6BTR from STMicroelectronics is a 32-bit ARM Cortex-M3 microcontroller in LQFP48 package, featuring 16 KB Flash, 4 KB SRAM, 24 MHz max CPU frequency, 1×12-bit ADC (16-channel), 2×12-bit DACs, and 8 communication interfaces including USART, SPI, I²C, and CEC - deployed in industrial sensor nodes and low-cost motor control systems.

For engineers reviewing the STM32F100C4T6BTR datasheet, STM32F100C4T6BTR pinout, STM32F100C4T6BTR application, or STM32F100C4T6BTR equivalent, key selection criteria include Flash/SRAM size, 5 V-tolerant I/O count (37 pins), RTC with VBAT support, SWD debug interface, and integrated temperature sensor for embedded thermal monitoring.

Technical Context

The device implements an ARM Cortex-M3 core with single-cycle multiply and hardware divide, executing at up to 24 MHz with 1.25 DMIPS/MHz performance. Its clock system integrates dual oscillators (8 MHz HSI, 32 kHz LSE), programmable PLL, and PVD for supply monitoring.

DMA supports 7 channels servicing timers, ADC, DAC, USART, SPI, and I²C concurrently. Low-power operation includes Sleep, Stop, and Standby modes with RTC and backup registers retained on VBAT.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch) with exposed pad; RoHS-compliant ECOPACK® packaging optimized for thermal dissipation and reflow compatibility.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F030F4P6, the STM32F100C4T6BTR delivers superior analog capability and RTC reliability; versus STM32F103C4T6, it trades clock speed for lower dynamic power and simplified thermal design in battery-powered edge nodes.

Availability

STM32F100C4T6BTR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control, low-cost motor drives, and USB-to-serial bridge designs requiring stable component supply across long-lifecycle production programs.

Supply support for STM32F100C4T6BTR 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The STM32F100 value line targets cost-sensitive embedded applications demanding balanced performance, analog integration, and low-power operation - optimized for appliances, HVAC controls, and entry-level industrial automation.

FAQ

What is the maximum operating frequency and associated power consumption?

The STM32F100C4T6BTR operates at up to 24 MHz. At 3.6 V and 24 MHz with all peripherals enabled, typical active current is 12.5 mA; in Run mode with code from Flash and minimal peripherals, it draws 9.2 mA. Power scales linearly with frequency and supply voltage, and Stop mode reduces current to 3.5 µA (typical) with RTC active on VBAT.

Does this MCU support hardware floating-point operations?

No. The STM32F100C4T6BTR uses the ARM Cortex-M3 core without an FPU. Floating-point calculations must be performed in software using the standard C library or CMSIS-DSP functions. For applications requiring hardware FP acceleration, consider STM32F3 or F4 series devices.

Can the internal temperature sensor be used for system-level thermal monitoring?

Yes. The integrated temperature sensor provides a calibrated analog output referenced to VREFINT (1.20 V ± 3%). It is factory-trimmed and usable across the full operating temperature range (–40 °C to +85 °C). Accuracy is ±3 °C over 0–85 °C, sufficient for fan control or overtemperature warning in non-critical systems.

Is the LQFP48 package lead-free and RoHS-compliant?

Yes. The STM32F100C4T6BTR uses an ECOPACK®-compliant LQFP48 package with lead-free terminations and halogen-free molding compound, meeting EU RoHS Directive 2011/65/EU and REACH SVHC requirements. Full compliance documentation is available in ST's official product change notices.