STMicroelectronics STM32F100RCT6

Overview

STM32F100RCT6 from STMicroelectronics is a high-density value-line Arm® Cortex®-M3 32-bit microcontroller with 256 KB Flash, 24 KB SRAM, 24 MHz max CPU frequency, 12-bit ADC (16-channel), and dual 12-bit DACs. It integrates 16 timers-including advanced-control and basic timers-and supports up to 11 communication interfaces (3x USART, 2x I²C, 3x SPI, CEC) in an LQFP100 package for embedded control applications requiring mixed-signal processing and real-time responsiveness.

For engineers reviewing the STM32F100RCT6 datasheet, STM32F100RCT6 pinout, STM32F100RCT6 application, or STM32F100RCT6 equivalent, key selection criteria include its 24 MHz Cortex-M3 core performance, 256 KB Flash/24 KB SRAM memory configuration, 100-pin LQFP package with 80 GPIOs (5 V-tolerant), integrated LCD parallel interface, and flexible static memory controller supporting NOR/PSRAM expansion.

Technical Context

The STM32F100RCT6 implements a nested vectored interrupt controller (NVIC) with 68 interrupt channels and supports remappable peripherals via alternate function I/O registers. Its clock system includes dual oscillators (4–24 MHz HSE and 32.768 kHz LSE), internal 8 MHz HSI and 40 kHz LSI RC sources, and a PLL for scalable CPU clock generation up to 24 MHz.

Power management features include Sleep, Stop, and Standby low-power modes with VBAT-backed RTC and backup registers. The device uses a flexible static memory controller (FSMC) with four chip selects and supports 8080/6800 LCD interface modes-enabling direct connection to character/graphic displays without external logic.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F072RBT6, the STM32F100RCT6 offers superior analog integration (dual DAC, temperature sensor) and memory expansion capability; versus STM32F103RCT6, it trades CPU speed and SRAM for lower power consumption and cost-making it optimal for battery-aware or cost-sensitive industrial edge nodes.

Availability

STM32F100RCT6 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, medical patient monitors, and building automation HMI panels requiring stable component supply, long-term manufacturability, and qualified industrial-grade reliability.

Supply support for STM32F100RCT6 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 devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

The STM32F100 Value Line targets cost-sensitive, resource-constrained embedded applications where balanced performance, analog integration, and low-power operation are critical-such as smart meters, industrial HMIs, and portable medical devices.

FAQ

What is the maximum operating frequency and core type of the STM32F100RCT6?

The STM32F100RCT6 features an Arm Cortex-M3 core with a maximum operating frequency of 24 MHz. It delivers 1.25 DMIPS per MHz (Dhrystone 2.1), supports single-cycle multiplication and hardware division, and operates across the industrial temperature range (–40°C to +85°C) with supply voltage from 2.0 V to 3.6 V.

Does the STM32F100RCT6 support external memory expansion?

Yes, the STM32F100RCT6 includes a Flexible Static Memory Controller (FSMC) with four chip select outputs. It supports asynchronous and synchronous interfaces for SRAM, PSRAM, and NOR flash memory, enabling direct expansion of program/data space without external glue logic-ideal for HMI or data-logging applications requiring >256 KB storage.

How many analog-to-digital and digital-to-analog converters does this MCU integrate?

The STM32F100RCT6 integrates one 12-bit, 1.2 µs ADC with up to 16 input channels and two independent 12-bit DACs. The ADC supports temperature sensor and VBAT measurement; both DACs offer configurable output buffers and can be triggered by timers or software-supporting closed-loop control, calibration signal generation, and audio waveform synthesis.

What debug interface does the STM32F100RCT6 use, and is JTAG supported?

The STM32F100RCT6 supports Serial Wire Debug (SWD) via dedicated SWDIO and SWCLK pins, which is the default and recommended debug interface. JTAG is also supported through the same physical pins (SWJ-DP), but requires BOOT0 = 1 and NRST assertion to enter JTAG mode-SWD is preferred for its reduced pin count and full debugging capability.