STMicroelectronics STM32F100R6T6BTR

Overview

STM32F100R6T6BTR from STMicroelectronics is a 32-bit ARM Cortex-M3 microcontroller in LQFP64 package, featuring 32 KB Flash, 4 KB SRAM, 24 MHz max CPU frequency, 1×12-bit ADC (16-channel), 2×12-bit DACs, and 8 communication interfaces including USART, SPI, I²C, and CEC - deployed in industrial sensor nodes requiring real-time analog signal conditioning and serial telemetry.

For engineers reviewing the STM32F100R6T6BTR datasheet, STM32F100R6T6BTR pinout, STM32F100R6T6BTR application, or STM32F100R6T6BTR equivalent, key selection criteria include Flash/SRAM size, integrated dual DAC capability for analog output generation, 5 V-tolerant GPIO count (up to 51 pins), RTC with VBAT backup, and SWD debug support for firmware validation in cost-sensitive embedded control designs.

Technical Context

The device implements an ARM Cortex-M3 core with single-cycle multiply/hardware divide, supporting deterministic real-time execution. Its clock system integrates 4–24 MHz HSE, 8 MHz HSI, 40 kHz LSI, and 32 kHz LSE oscillators, plus a programmable PLL for flexible CPU and peripheral clock derivation.

DMA supports 7 channels servicing timers, ADC, DAC, USART, SPI, and I²C - enabling zero-CPU-overhead data transfers. The NVIC provides 64 interrupt lines with configurable priority, while EXTI maps up to 16 GPIOs to external interrupt vectors for fast edge-triggered event handling.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad - optimized for thermal dissipation in sealed enclosures and compatible with standard PCB reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F030F4P6, STM32F100R6T6BTR delivers superior analog precision and real-time determinism; versus STM32F103C8T6, it offers tighter BOM control and lower power in applications where 32 KB Flash suffices and CEC is required.

Availability

STM32F100R6T6BTR 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 multi-year production cycles.

Supply support for STM32F100R6T6BTR 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, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade components.

This part belongs to the STM32F100 value line - engineered for cost-sensitive industrial and consumer applications demanding balanced performance, integrated analog peripherals, and long-term supply stability.

FAQ

What is the maximum operating temperature range for STM32F100R6T6BTR?

The STM32F100R6T6BTR is rated for industrial temperature range: –40°C to +85°C. This is confirmed in Section 5.3.1 of the datasheet (DocID16455 Rev 9), where ambient operating conditions specify T_A = –40 to +85°C with V_DD = 2.0–3.6 V. The device maintains full ADC accuracy, timer timing, and Flash write endurance across this range.

Does STM32F100R6T6BTR support USB device functionality?

No, STM32F100R6T6BTR does not include a USB peripheral. It features USART, SPI, I²C, and CEC interfaces but lacks USB transceiver hardware or dedicated USB controller logic. For USB connectivity, designers must select STM32F103 or higher-series parts with integrated USB FS device IP.

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

Yes - the factory-trimmed 8 MHz HSI oscillator serves as a ready-to-use clock source with ±1% accuracy after trimming, eliminating need for external crystal in non-precision timing applications. It can drive the system directly or feed the PLL for higher-frequency operation, as detailed in Section 2.2.7 and Table 23 of the datasheet.

How many GPIO pins support external interrupt capability on STM32F100R6T6BTR?

Up to 16 GPIO pins can be mapped to external interrupt lines via the EXTI controller - specifically, all 16 lines (EXTI0–EXTI15) are connectable to corresponding GPIO pins across ports A, B, and C. This is documented in Section 2.2.6 and Table 4 of the datasheet, enabling flexible wake-up and event-handling architecture.