STMicroelectronics STM32F051R8T6TR

Overview

STM32F051R8T6TR from STMicroelectronics is a 32-bit ARM Cortex-M0 microcontroller in LQFP64 package, featuring 64 KB Flash, 8 KB SRAM with hardware parity, 48 MHz max CPU frequency, one 12-bit ADC (1.0 µs conversion), one 12-bit DAC, and dual USARTs with LIN/IrDA support. It targets industrial control panels requiring integrated analog peripherals and low-power operation down to Stop mode.

For engineers reviewing the STM32F051R8T6TR datasheet, STM32F051R8T6TR pinout, STM32F051R8T6TR application, or STM32F051R8T6TR equivalent, key selection criteria include Flash/SRAM size, 5 V-tolerant I/O count (up to 36), RTC with alarm, HDMI CEC interface, and SWD debug support - all confirmed in ST's DocID022265 Rev 7.

Technical Context

This MCU implements a single-cycle ARM Cortex-M0 core with Thumb-2 instruction set, supporting deterministic real-time execution at up to 48 MHz. Its memory subsystem includes 64 KB of Flash with error correction logic and 8 KB of SRAM with hardware parity checking for safety-critical firmware integrity.

The clock system integrates multiple oscillators: 4–32 MHz external crystal, 32 kHz RTC oscillator with calibration, 8 MHz internal RC with x6 PLL, and 40 kHz LSI for watchdog and Stop-mode wakeup. Power management supports Sleep, Stop, and Standby modes with VBAT backup for RTC and registers.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant ECOPACK®2, 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 STM32F051R8T6TR, STM32F072RBT6 trades CEC for USB 2.0 FS, while STM32G031K8T6 increases CPU speed and reduces footprint but removes both CEC and TSC - making the R8T6TR uniquely balanced for touch-enabled, IR/CEC-aware industrial nodes.

Availability

STM32F051R8T6TR is available at Aetrix Electronics and suitable for industrial motor control, smart home hubs, energy metering modules, and medical diagnostic sensor nodes requiring stable component supply across extended product lifecycles.

Supply support for STM32F051R8T6TR 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 ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The STM32F0 series delivers entry-level Cortex-M0+ performance with rich analog integration and low-power features, targeting cost-sensitive embedded systems needing high peripheral density in small packages.

FAQ

What is the maximum operating frequency and supported voltage range?

The STM32F051R8T6TR operates at up to 48 MHz and supports a digital supply voltage (VDD) range of 2.0 V to 3.6 V. The analog supply (VDDA) must be between 2.4 V and 3.6 V and may be tied to VDD if within spec. These values are validated per ST's electrical characteristics table (DocID022265 §6.3.1).

Does this MCU support hardware cryptographic acceleration?

No, the STM32F051R8T6TR does not include hardware cryptographic accelerators such as AES, SHA, or PKA engines. It relies on software libraries for encryption tasks. Cryptographic functionality is introduced in later families like STM32L4 or STM32G0 with dedicated crypto peripherals.

Can the 12-bit DAC output drive a load directly?

The integrated 12-bit DAC has a typical output impedance of 15 kΩ and is specified to drive loads ≥ 5 kΩ. For low-impedance loads (e.g., op-amp inputs or cables), an external buffer amplifier is required to maintain linearity and settling time - per DAC electrical specs in §6.3.17 of the datasheet.

Is the LQFP64 package RoHS and REACH compliant?

Yes, the STM32F051R8T6TR in LQFP64 package is manufactured under ST's ECOPACK®2 initiative and fully complies with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Compliance documentation is available in ST's official product change notices and material declarations.