STMicroelectronics STM32F100RBT6BTR

Overview

STM32F100RBT6BTR from STMicroelectronics is a 32-bit ARM® Cortex®-M3 microcontroller in LQFP64 package, featuring 128 KB Flash, 8 KB SRAM, 24 MHz max CPU frequency, 1×12-bit ADC (16-channel), and 2×12-bit DACs. It integrates 12 timers-including advanced-control timer with dead-time generation-and supports up to 8 communication interfaces (3×USART, 2×SPI, 2×I²C, CEC) for industrial sensor nodes and motor control edge devices.

For engineers reviewing the STM32F100RBT6BTR datasheet, STM32F100RBT6BTR pinout, STM32F100RBT6BTR application, or STM32F100RBT6BTR equivalent, key selection criteria include Flash/SRAM capacity, 5 V-tolerant I/O count (51 pins), RTC with VBAT backup, SWD debug support, and PWM-capable advanced timer for closed-loop actuation.

Technical Context

The device implements a single-cycle multiply/hardware divide Cortex-M3 core operating at up to 24 MHz (1.25 DMIPS/MHz), with nested vectored interrupt controller (NVIC) supporting 68 interrupts. Its clock system includes dual oscillators (8 MHz HSI ±1%, 32 kHz LSE), PLL for CPU clock derivation, and programmable voltage detector (PVD) for supply monitoring.

Power management enables Sleep/Stop/Standby modes with VBAT-backed RTC and backup registers; DMA supports 7 channels across ADC, DAC, USART, SPI, and I²C. Peripheral remapping allows flexible pin assignment for signal routing in space-constrained PCB layouts.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, ECOPACK® certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F100RBT6BTR, STM32F072RBT6 trades DAC/timer capability for lower cost and power, while STM32G071RBT6 offers enhanced memory and speed at the expense of legacy peripheral support like CEC - both require firmware adaptation for ADC/DAC register access and interrupt vector alignment.

Availability

STM32F100RBT6BTR is available at Aetrix Electronics and suitable for industrial sensor nodes, brushless DC motor controllers, smart energy meter interfaces, and medical diagnostic handhelds requiring stable component supply across multi-year production cycles.

Supply support for STM32F100RBT6BTR 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 sensing technologies for industrial, automotive, and consumer markets.

This part belongs to the STM32F100 value line - designed specifically for cost-sensitive, low-to-medium complexity embedded applications requiring robust analog integration, real-time control, and long-term supply stability in industrial automation and appliance control.

FAQ

What is the maximum operating temperature range for STM32F100RBT6BTR?

The STM32F100RBT6BTR is rated for industrial temperature range: –40 °C to +85 °C. This is validated per ST's qualification testing (JESD47) and applies to all electrical specifications in the datasheet. Thermal derating is not required within this range, and the device maintains full ADC/DAC accuracy and timer jitter performance across the span.

Does STM32F100RBT6BTR support USB device functionality?

No, STM32F100RBT6BTR does not include a USB peripheral. It lacks USB PHY, USB controller, and associated descriptors. For USB connectivity, designers must use external USB-to-UART bridges (e.g., CP2102) or migrate to STM32F103-series MCUs with integrated USB 2.0 FS device interface.

Can the internal 8 MHz RC oscillator be used as the system clock source without calibration?

Yes - the internal 8 MHz HSI oscillator is factory-trimmed to ±1% accuracy at 25 °C and 3.3 V, enabling immediate use as system clock without external crystal or runtime calibration. For applications requiring tighter timing (e.g., UART baud rate error <1%), the PLL can lock to HSI to generate precise derived clocks.

How many I/O pins support external interrupt capability?

All 51 general-purpose I/O pins (PA0–PA15, PB0–PB15, PC0–PC15 excluding PC13–PC15 which are RTC-specific) are mappable to 16 external interrupt lines (EXTI0–EXTI15). Each EXTI line can be triggered by rising/falling edge or level on any configured pin - enabling flexible wake-up and event-driven processing in low-power modes.