STMicroelectronics STM32F100RCT6BTR

Overview

STM32F100RCT6BTR from STMicroelectronics is a high-density value-line Arm® Cortex®-M3 microcontroller featuring 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 STM32F100RCT6BTR datasheet, STM32F100RCT6BTR pinout, STM32F100RCT6BTR application, or STM32F100RCT6BTR equivalent, key selection criteria include Flash/SRAM capacity, integrated analog peripherals (ADC/DAC), timer architecture for PWM generation, and LQFP100 package compatibility with legacy STM32F100x design footprints.

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 memory subsystem includes 256 KB of embedded Flash with error correction, 24 KB SRAM, and a flexible static memory controller supporting SRAM, PSRAM, and NOR devices via four chip selects.

Clock management integrates multiple oscillators: 4–24 MHz external crystal, 8 MHz factory-trimmed RC, 40 kHz RC, and PLL-based CPU clock synthesis. Power architecture supports Sleep, Stop, and Standby modes with VBAT-backed RTC and backup registers, enabling low-power sensor and metering applications.

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, STM32F100RCT6BTR delivers higher analog integration and external memory capability at lower clock speed; versus STM32F103RCT6, it trades performance and USB/CAN for lower cost and optimized low-power operation in resource-constrained industrial nodes.

Availability

STM32F100RCT6BTR is available at Aetrix Electronics and suitable for industrial HMI panels, brushless DC motor monitors, and smart energy meter sensor nodes requiring stable component supply across extended product lifecycles.

Supply support for STM32F100RCT6BTR 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, sensors, and automotive semiconductors.

This part belongs to the STM32F100 Value Line, engineered for cost-optimized, low-power embedded control in industrial automation, consumer appliances, and metering-emphasizing analog integration, memory flexibility, and robust real-time operation.

FAQ

What is the maximum operating frequency and associated power consumption in Run mode?

The STM32F100RCT6BTR operates at up to 24 MHz. At 24 MHz with all peripherals active and code running from Flash, typical current consumption is 12.5 mA (VDD = 3.3 V, TA = 25°C), per Section 5.3.5 of DS5944 Rev 11. This reflects its value-line optimization for balanced performance and efficiency in battery- or energy-harvesting–constrained designs.

Does this MCU support external memory expansion, and what types are compatible?

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

How many analog-to-digital converter channels are available, and what is their effective resolution?

The device features one 12-bit ADC with up to 16 external input channels. Under typical conditions (fADC = 12 MHz, VDDA = 3.3 V), integral nonlinearity is ±1.5 LSB and differential nonlinearity is ±0.8 LSB, yielding effective resolution of ~11.3 bits per Table 54 in DS5944 Rev 11.

Is the LQFP100 package pin-compatible with other STM32F100 variants, and what are the key layout considerations?

Yes-STM32F100RCT6BTR shares the same LQFP100 mechanical footprint and pinout with other STM32F100x devices in the R variant (e.g., STM32F100RBT6). Critical layout requirements include separate analog/digital ground planes, dedicated VDDA/VSSA decoupling near pins 17/18, and strict adherence to trace length matching for crystal oscillator connections (4–24 MHz) as specified in Section 6.2.