STMicroelectronics STM32C031F6P7TR

Overview

STM32C031F6P7TR from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller in TSSOP20 package, featuring 32 KB flash, 12 KB SRAM with hardware parity, 48 MHz max CPU frequency, and integrated 12-bit ADC (0.4 µs conversion), two USARTs (one with ISO7816/LIN/IrDA), I²C Fast-mode Plus (1 Mbit/s), SPI (24 Mbit/s), and calendar RTC. It targets cost-sensitive industrial sensor nodes and smart metering interfaces requiring robust low-power operation down to 2.0 V.

For engineers reviewing the STM32C031F6P7TR datasheet, STM32C031F6P7TR pinout, STM32C031F6P7TR application, or STM32C031F6P7TR equivalent, key selection criteria include its 20-pin TSSOP footprint, 5 V-tolerant I/Os, BOR programmability, SWD debug support, and verified operation across -40°C to 105°C ambient temperature.

Technical Context

The device implements an Arm Cortex-M0+ core with MPU, supporting TrustZone-like memory protection for secure firmware partitioning. Its clock system integrates dual oscillators: a 4–48 MHz HSE crystal input and a factory-calibrated 32 kHz LSE, plus internal 48 MHz HSI48 (±1%) and 32 kHz LSI (±5%) RC sources.

Peripherals are interconnected via AHB/APB buses with DMA controller (3 channels) and DMAMUX for flexible peripheral-to-memory transfers. The ADC supports up to 19 external channels with VREFINT and temperature sensor calibration, while timers include one advanced-control (TIM1) and four general-purpose (TIM3/14/16/17) units with complementary output capability.

Key Specifications

Pinout & Package

TSSOP20 (6.4 × 4.4 mm, 0.65 mm pitch) package with ECOPACK2 compliance and lead-free finish. Pin count optimized for space-constrained applications while retaining full peripheral access via remappable GPIOs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32C031F6P7TR, the C011 variant trades memory and RTC for lower cost in static control tasks, while the G031 offers cryptographic acceleration and larger memory at the expense of BOR flexibility-making the C031 optimal for time-aware, power-variable industrial edge nodes.

Availability

STM32C031F6P7TR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering interfaces, white goods motor controllers, and IoT edge gateway subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM32C031F6P7TR 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 ICs, sensors, and analog components for industrial, automotive, and consumer markets.

This device belongs to the STM32C0 mainstream microcontroller line, engineered specifically for cost-sensitive, ultra-low-power embedded applications demanding high integration, robustness, and long-term supply assurance in harsh environments.

FAQ

What is the maximum operating frequency and associated voltage range?

The STM32C031F6P7TR achieves 48 MHz CPU operation across its full 2.0–3.6 V supply range. At 2.0 V, it operates up to 24 MHz; above 2.7 V, full 48 MHz is guaranteed. This scaling allows dynamic voltage/frequency adjustment to minimize active power consumption in battery-powered systems without sacrificing peak performance when needed.

Does this MCU support hardware encryption or secure boot?

No, the STM32C031F6P7TR does not integrate hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It relies on software-based security primitives and optional external secure elements. Its memory protection unit (MPU) supports region-based privilege isolation, but lacks TrustZone or dedicated secure firmware update mechanisms found in higher-tier STM32 families.

Can the internal 48 MHz RC oscillator be used as the system clock source?

Yes, the internal 48 MHz HSI48 oscillator (±1% accuracy at 25°C) is fully qualified as the system clock source and requires no external components. It is factory-trimmed and supports automatic calibration against the LSE crystal, making it ideal for applications where crystal cost or board space is constrained while maintaining reliable USB or communication timing.

What are the key thermal limitations for continuous operation in TSSOP20 package?

In TSSOP20, the STM32C031F6P7TR has a maximum junction temperature of 125°C and thermal resistance θ_JA of 120°C/W (standard JEDEC 2-layer board). For continuous 48 MHz operation at 105°C ambient, PCB copper area under the exposed pad (if present) and airflow must be validated; derating is required above 85°C ambient unless thermal vias and heatsinking are implemented per ST AN5248 guidelines.