STMicroelectronics STM32F051K8T6TR

Overview

STM32F051K8T6TR from STMicroelectronics is a 32-bit ARM® Cortex®-M0 microcontroller with 64 KB Flash, 8 KB SRAM, 48 MHz max CPU frequency, and integrated peripherals including 12-bit ADC, 12-bit DAC, two USARTs (one with LIN/IrDA), two I²C (one Fast Mode Plus), two SPI (18 Mbit/s), RTC, and capacitive touch sensing-used in industrial control panels and smart sensor nodes requiring low-power operation and analog signal conditioning.

For engineers reviewing the STM32F051K8T6TR datasheet, STM32F051K8T6TR pinout, STM32F051K8T6TR application, or STM32F051K8T6TR equivalent, key selection criteria include Flash/SRAM size, 5 V-tolerant I/O count (up to 36), 1.0 µs ADC conversion time, DAC linearity (±1 LSB INL), and support for Stop/Standby low-power modes with RTC wakeup.

Technical Context

The device implements an ARM Cortex-M0 core with Harvard bus architecture and nested vectored interrupt controller (NVIC), supporting Thumb-2 instruction set and single-cycle 32-bit multiplication. It integrates a 4–32 MHz external crystal oscillator, internal 8 MHz RC with x6 PLL, and 40 kHz LSI for RTC and watchdog timing.

Peripherals include one advanced-control timer (TIM1) with 6-channel PWM, deadtime generation, and emergency stop; one basic timer (TIM6) dedicated to DAC triggering; and two general-purpose timers with IR decoding capability. The 12-bit ADC supports up to 16 channels with 0–3.6 V input range and separate VDDA supply.

Key Specifications

Pinout & Package

STM32F051K8T6TR uses the UFQFPN32 (5 × 5 mm, 0.5 mm pitch) package with 32-pin layout optimized for compact industrial and consumer PCBs. Pin assignments are validated per STMicroelectronics DocID022265 Rev 7, Section 4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F030F4P6, STM32F051K8T6TR adds DAC, TSC, and higher ADC resolution for analog-rich systems; versus STM32G031F8P6, it trades modern security for mature toolchain support and capacitive touch integration-critical for HMI-focused products.

Availability

STM32F051K8T6TR is available at Aetrix Electronics and suitable for industrial motor drives, smart home sensor hubs, POS terminal peripherals, and medical diagnostic handhelds requiring stable component supply across long-lifecycle programs.

Supply support for STM32F051K8T6TR 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, MEMS sensors, and automotive semiconductors since 1987.

The STM32F0 series targets cost-sensitive, low-power embedded applications requiring rich analog integration and real-time control-optimized for industrial automation, appliance control, and consumer electronics with tight BOM constraints.

FAQ

What is the maximum operating temperature range for STM32F051K8T6TR?

The STM32F051K8T6TR is rated for industrial temperature range: –40 °C to +85 °C. This is confirmed in Section 6.3.1 of the official datasheet (DocID022265 Rev 7), where electrical characteristics are specified across this ambient range with VDD = 2.0–3.6 V. Thermal derating is not required within these limits.

Does STM32F051K8T6TR support USB connectivity?

No, STM32F051K8T6TR does not include a USB peripheral. It lacks USB PHY, USB controller, and associated registers. Communication interfaces are limited to USART, SPI, I²C, HDMI CEC, and SWD debug. For USB-enabled variants, consider STM32F042 or STM32F072 series.

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

Yes. The internal 8 MHz RC oscillator (HSI) is factory-trimmed to ±1% accuracy and can directly drive the system clock or feed the PLL (x6 → 48 MHz). No external crystal or capacitor is needed, though external clock sources improve timing precision for UART or audio applications.

Is STM32F051K8T6TR pin-compatible with other STM32F051 variants in the same package?

Yes-within the UFQFPN32 package, STM32F051K4T6, STM32F051K6T6, and STM32F051K8T6 share identical pinouts and electrical characteristics. Differences are limited to Flash size (16/32/64 KB) and feature enablement (e.g., TSC channel count), all supported by the same physical layout and PCB footprint.