STMicroelectronics STM32F051R8H6TR

Overview

STM32F051R8H6TR 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 STM32F051R8H6TR datasheet, STM32F051R8H6TR pinout, STM32F051R8H6TR application, or STM32F051R8H6TR 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 for this LQFP64 variant.

Technical Context

This MCU integrates an ARM Cortex-M0 core with deterministic interrupt handling via NVIC and EXTI, supporting real-time deterministic response in motor control and sensor fusion applications. Its clock system combines 4–32 MHz HSE, 32 kHz LSE for RTC calibration, and internal 8 MHz HSI with x6 PLL for precise 48 MHz system clock generation.

The analog subsystem includes a 12-bit ADC with 16-channel multiplexing, dedicated VDDA supply (2.4–3.6 V), and independent 12-bit DAC channel usable with TIM6 trigger - enabling closed-loop analog signal generation and acquisition within a single chip.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad - suitable for industrial PCBs requiring mechanical robustness and thermal dissipation under continuous 48 MHz operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F051R8H6TR, the K8U6 offers higher density but sacrifices touch capability and I/O count, while the F072RBT6 adds USB at the expense of analog precision and power efficiency in battery-operated modes.

Availability

STM32F051R8H6TR is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, home appliance HMI, and medical sensor node applications requiring stable component supply across extended production lifecycles.

Supply support for STM32F051R8H6TR 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F0 series delivers entry-level Cortex-M0 performance with rich analog integration and ultra-low-power modes - engineered specifically for cost-sensitive, resource-constrained embedded systems needing high peripheral density in compact packages.

FAQ

What is the maximum operating temperature range for STM32F051R8H6TR?

The STM32F051R8H6TR is rated for industrial temperature range: –40 °C to +85 °C ambient. This is validated per ST's characterization data (Section 6.3.1, DocID022265 Rev 7), with thermal derating applied above 70 °C for sustained 48 MHz operation in LQFP64 package.

Does STM32F051R8H6TR support hardware encryption or secure boot?

No. The STM32F051R8H6TR does not include hardware cryptographic accelerators or secure boot ROM. It relies on software-based AES implementation and external secure elements for advanced security. ST's STM32L0 or STM32G0 series provide integrated AES-128 and secure bootloader features.

Can the internal 12-bit DAC drive a 50 Ω load directly?

No. The DAC output is specified for resistive loads ≥ 5 kΩ (Section 6.3.17). Driving a 50 Ω load would cause significant gain error and distortion. A rail-to-rail op-amp buffer (e.g., TSZ121) is required to maintain 12-bit monotonicity and settling time.

Is the 96-bit unique ID accessible via standard debug interface?

Yes. The 96-bit unique ID is readable via SWD using ST's ST-LINK utility or OpenOCD, mapped to option byte address 0x1FFFF7AC. It is factory-programmed and immutable, intended for device identification and licensing - not for cryptographic key derivation due to non-random entropy.