STMicroelectronics STM32C031F6P6

Overview

STM32C031F6P6 from STMicroelectronics is an Arm® Cortex®-M0+ 32-bit microcontroller with 32 KB flash, 12 KB SRAM, 2× USART, 12-bit ADC (0.4 µs conversion), and operation up to 48 MHz. It features 5 V-tolerant I/Os, hardware parity on SRAM, and supports -40°C to 85°C ambient temperature - deployed in industrial sensor nodes and smart metering front-ends.

For engineers reviewing the STM32C031F6P6 datasheet, STM32C031F6P6 pinout, STM32C031F6P6 application, or STM32C031F6P6 equivalent, key selection factors include its TSSOP20 package footprint, 2.0–3.6 V supply range, integrated CRC unit, low-power Stop/Standby modes, and dual USARTs with LIN/IrDA support for cost-sensitive embedded control.

Technical Context

The STM32C031F6P6 integrates an Arm Cortex-M0+ core with MPU, a 48 MHz internal RC oscillator (±1 %), and a 32 kHz LSE crystal oscillator with calibration. Its memory subsystem includes 32 KB of flash with readout protection and 12 KB of SRAM with hardware parity checking - enabling deterministic real-time execution and data integrity verification.

Peripheral interconnect uses a multi-layer AHB/APB bus matrix supporting concurrent DMA transfers across timers, ADC, and communication interfaces. Clock tree allows dynamic switching between HSI48, LSE, and external crystal sources, while the reset system provides POR/PDR, programmable BOR, and independent watchdogs (IWDG/WWDG) for robust system recovery.

Key Specifications

Pinout & Package

TSSOP20 (YA) package: 20-pin thin shrink small outline package, 6.4 × 4.4 mm body, 0.65 mm pitch, surface-mount, ECOPACK2-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32C011F4P6, the STM32C031F6P6 adds calendar RTC and second USART for dual-protocol telemetry; versus STM32G031F6P6, it trades crypto acceleration and extended temperature rating for lower unit cost and identical TSSOP20 footprint compatibility.

Availability

STM32C031F6P6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meter front-ends, motor control actuators, and IoT edge gateway subsystems requiring stable component supply across multi-year production cycles.

Supply support for STM32C031F6P6 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, and automotive semiconductors since 1987.

The STM32C0 series targets cost-sensitive, space-constrained embedded applications demanding high integration, low power, and industrial-grade reliability - optimized for appliance control, lighting, and basic industrial automation.

FAQ

What is the maximum operating frequency of the STM32C031F6P6?

The STM32C031F6P6 operates at up to 48 MHz using its internal 48 MHz RC oscillator (HSI48) with ±1 % accuracy, or from an external 4–48 MHz crystal. This frequency is fully supported across its entire operating voltage range (2.0–3.6 V) and temperature range (–40°C to +85°C).

Does the STM32C031F6P6 support hardware encryption?

No, the STM32C031F6P6 does not include hardware cryptographic accelerators such as AES or PKA engines. It relies on software-based encryption libraries. For hardware crypto, consider the pin-compatible STM32G031F6P6, which integrates AES-128 and random number generation.

Can the STM32C031F6P6 run from a 3.3 V supply with full peripheral functionality?

Yes - the device is fully specified for operation at 3.3 V (within its 2.0–3.6 V range), supporting all peripherals including ADC, timers, USARTs, and I²C at maximum clock speed. The 12-bit ADC maintains full 0–3.6 V input range and 1 LSB accuracy at this supply.

Is the TSSOP20 package of the STM32C031F6P6 RoHS and REACH compliant?

Yes, the STM32C031F6P6 in TSSOP20 (YA) package is ECOPACK2-compliant, meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with lead-free terminations and halogen-free molding compound.