STMicroelectronics STM32F100RCT6B

Overview

STM32F100RCT6B from STMicroelectronics is a high-density value-line Arm® Cortex®-M3 microcontroller with 256 KB Flash, 24 KB SRAM, 24 MHz max CPU frequency, 12-bit ADC (16-channel), and dual 12-bit DACs - used in industrial sensor nodes requiring integrated analog I/O and deterministic real-time control.

For engineers reviewing the STM32F100RCT6B datasheet, STM32F100RCT6B pinout, STM32F100RCT6B application, or STM32F100RCT6B equivalent, key selection factors include its LQFP64 package, 51 GPIOs (5 V-tolerant), flexible static memory controller (FSMC), LCD parallel interface support, and low-power Stop/Standby modes for battery-operated edge devices.

Technical Context

The device implements a nested vectored interrupt controller (NVIC) with 68 interrupt channels and supports remappable peripherals via alternate function I/O registers. Its clock tree integrates dual oscillators (4–24 MHz HSE and 32.768 kHz LSE), programmable voltage detector (PVD), and PLL-based system clock generation up to 24 MHz.

DMA operation spans 12 channels servicing timers, ADC, SPI, I²C, USART, and DACs - enabling zero-CPU-overhead data transfers. The FSMC supports asynchronous SRAM, PSRAM, and NOR memories with four chip selects and configurable timing parameters for external memory interfacing.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad - optimized for compact industrial PCB layouts and moderate power dissipation (max 100 mW typical active current).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F072RBT6, the STM32F100RCT6B offers superior analog integration and memory expansion; versus STM32F103C8T6, it trades CPU speed for lower power, built-in DACs, and FSMC - making it optimal for sensor-aggregation and display-enabled edge nodes.

Availability

STM32F100RCT6B is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC actuators, portable medical devices, and energy meter front-ends requiring stable component supply across long-lifecycle deployments.

Supply support for STM32F100RCT6B 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, specializing in microcontrollers, power management, and automotive-grade ICs.

The STM32F100 Value Line targets cost-sensitive industrial and consumer applications where balanced performance, analog integration, and low-power operation are essential - not raw speed.

FAQ

What is the maximum operating temperature range for STM32F100RCT6B?

The STM32F100RCT6B is rated for industrial temperature range: –40 °C to +85 °C. This is confirmed in Section 5.3.1 of DS5944 Rev 11, specifying ambient operating conditions and thermal derating curves up to 105 °C junction temperature under defined power dissipation limits.

Does STM32F100RCT6B support USB device functionality?

No, the STM32F100RCT6B does not include a USB peripheral. It features up to 11 serial interfaces (including 3 USARTs, 2 UARTs, 3 SPIs, and 2 I²Cs), but USB is absent from its peripheral set - unlike the STM32F103 series. External USB-to-UART bridges are required for USB connectivity.

Can the internal 8 MHz RC oscillator be used as the system clock source?

Yes, the factory-trimmed 8 MHz internal RC oscillator (HSI) can serve as the system clock source. It is specified with ±1% accuracy over temperature and voltage (Section 5.3.7), and supports automatic calibration via the RCC_CR register - making it suitable for applications where crystal cost or board space is constrained.

How many external interrupt lines are available on STM32F100RCT6B?

The device provides 16 external interrupt/event lines (EXTI0–EXTI15), each mapped to one GPIO pin per port (e.g., PA0, PB0, PC0 share EXTI0). All 51 GPIOs are configurable as EXTI sources, enabling flexible wake-up and event-driven response across multiple I/O banks.