STMicroelectronics STM32F100RCT6TR

Overview

STM32F100RCT6TR 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. It integrates 16 timers-including advanced-control and basic timers-and supports up to 11 communication interfaces (3x USART, 2x I²C, 3x SPI, CEC) for embedded control in industrial HMI, motor drive monitoring, and sensor node applications.

For engineers reviewing the STM32F100RCT6TR datasheet, STM32F100RCT6TR pinout, STM32F100RCT6TR application, or STM32F100RCT6TR equivalent, key selection criteria include Flash/SRAM size, 100-pin LQFP package compatibility, 24 MHz operation under 2.0–3.6 V supply, integrated RTC with VBAT support, and SWD/JTAG debug interface availability.

Technical Context

The device implements an Arm Cortex-M3 core with single-cycle multiply and hardware divide, delivering 1.25 DMIPS/MHz performance. Its clock system includes dual oscillators (4–24 MHz HSE and 32.768 kHz LSE), programmable PLL, and factory-trimmed 8 MHz HSI RC source-enabling precise timing for real-time control loops and RTC calibration.

Peripheral integration centers on deterministic I/O handling: up to 80 5V-tolerant GPIOs mapped to 16 external interrupt vectors, flexible static memory controller (FSMC) supporting NOR/PSRAM, and LCD parallel interface (8080/6800 modes) for direct display driver interfacing without external logic.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, rated for 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 STM32F100RCT6TR, STM32F072RBT6 trades performance and peripherals for lower cost and power, while STM32F103RCT6 delivers higher CPU throughput at the expense of RTC battery backup and value-line power optimization-making the F100 variant optimal for always-on, battery-buffered industrial control.

Availability

STM32F100RCT6TR is available at Aetrix Electronics and suitable for industrial motor monitoring, smart sensor nodes, HMI control panels, and consumer appliance controllers requiring stable component supply across long production lifecycles.

Supply support for STM32F100RCT6TR 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, specializing in microcontrollers, power management, and sensor technologies for industrial, automotive, and consumer markets.

This part belongs to the STM32F100 Value Line-a cost-optimized, industrial-grade MCU family designed for applications prioritizing balanced performance, low power, and rich analog/peripheral integration without premium pricing.

FAQ

What is the maximum operating frequency and voltage range of the STM32F100RCT6TR?

The STM32F100RCT6TR operates at a maximum CPU frequency of 24 MHz and supports a supply voltage range of 2.0 V to 3.6 V for both core and I/O domains. This range accommodates standard 3.3 V systems and allows direct interface with 5 V-tolerant peripherals without level shifters, as confirmed in Section 5.3.1 of DS5944 Rev 11.

Does this MCU support external memory expansion, and if so, what types?

Yes, it integrates a Flexible Static Memory Controller (FSMC) with four chip select lines supporting asynchronous and synchronous SRAM, PSRAM, and NOR flash devices. Supported configurations include non-multiplexed and multiplexed address/data buses, with timing parameters fully specified in Tables 30–37 of the datasheet for reliable interface design.

How many analog-to-digital converter channels does the STM32F100RCT6TR provide, and what is its resolution?

The device includes one 12-bit ADC with up to 16 external input channels and a minimum conversion time of 1.2 µs. It also features an integrated temperature sensor connected to ADC channel 16, enabling on-die thermal monitoring without external components, as detailed in Section 2.2.25 and Table 51 of DS5944 Rev 11.

Is the STM32F100RCT6TR pin-compatible with other STM32F100 variants in the same package?

Yes, all STM32F100xC/D/E devices in LQFP100 share identical pinouts and electrical characteristics, differing only in Flash (256–512 KB), SRAM (24–32 KB), and peripheral enablement. This allows hardware reuse across product tiers-e.g., upgrading from STM32F100RCT6TR to STM32F100VCT6 requires only firmware changes, per Table 1 and Section 4 of DS5944 Rev 11.