STMicroelectronics STM32G031Y8Y6TR

Overview

STM32G031Y8Y6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller in WLCSP18 package, featuring 64 KB Flash, 8 KB SRAM, 12-bit ADC (0.4 µs conversion), dual USARTs with LIN/IrDA support, and operation from 1.7–3.6 V. It integrates calendar RTC with wakeup from Stop/Standby, five-channel DMA, and supports industrial sensor node and smart actuator control.

For engineers reviewing the STM32G031Y8Y6TR datasheet, STM32G031Y8Y6TR pinout, STM32G031Y8Y6TR application, or STM32G031Y8Y6TR equivalent, key selection criteria include WLCSP18 footprint constraints, 64 MHz max CPU frequency, 125°C extended temperature rating, low-power UART wake capability, and hardware parity on SRAM for functional safety compliance.

Technical Context

The device implements an Arm Cortex-M0+ core with MPU, supporting TrustZone-like memory protection via readout protection (RDP) levels and securable flash area. Its clock system combines 4–48 MHz HSE, 32 kHz LSE with calibration, and ±1% internal 16 MHz HSI with PLL-enabling precise timing for real-time motor control loops.

Peripheral interconnect uses a hierarchical AHB/APB bus matrix with DMAMUX routing; analog subsystem includes VREFINT, temperature sensor, and VBAT monitoring-all accessible via shared ADC channels. Low-power modes (Stop 0/1, Standby, Shutdown) are managed by programmable PVD/BOR and VREG voltage scaling.

Key Specifications

Pinout & Package

STM32G031Y8Y6TR uses the WLCSP18 (B06E) package: 18-ball, 0.4 mm pitch, 1.86 × 2.14 mm body size, with solder ball array arranged in 3×6 configuration. Ball assignment follows ST's standard WLCSP mapping for G0-series.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G031Y8Y6TR, STM32G030F6P6 trades security and packaging density for lower unit cost, while STM32G041F8P6 adds analog event processing capability at the expense of battery-aware low-power features-making the Y8Y6TR uniquely suited for compact, secure, battery-extended edge nodes.

Availability

STM32G031Y8Y6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body controllers, medical wearables, and smart actuator systems requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for STM32G031Y8Y6TR 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, MEMS, and analog products since 1987.

The STM32G0 series targets cost-sensitive, ultra-low-power embedded applications requiring robust security, small form factor, and automotive-grade reliability-optimized for smart sensors, lighting, and human-machine interface peripherals.

FAQ

What is the maximum operating frequency and associated voltage range for STM32G031Y8Y6TR?

The STM32G031Y8Y6TR operates at up to 64 MHz when supplied between 2.7 V and 3.6 V. At 1.7–2.7 V, maximum frequency is reduced to 24 MHz to maintain timing margins. This voltage/frequency scaling is enforced by the internal voltage regulator and verified across −40°C to +125°C per DS12992 Rev 4 Section 5.3.1.

Does STM32G031Y8Y6TR support hardware cryptographic acceleration?

No, the STM32G031Y8Y6TR does not include dedicated cryptographic accelerators (AES, SHA, PKA). Security relies on software libraries and hardware features like Readout Protection (RDP), securable flash area, and unique 96-bit ID. For hardware crypto, ST recommends STM32G0B1 or STM32L5 series.

Can the WLCSP18 package be hand-soldered or reworked reliably?

WLCSP18 (1.86 × 2.14 mm, 0.4 mm pitch) requires stencil-printed solder paste, precise pick-and-place alignment (±25 µm), and nitrogen-reflow profile per ST AN5013. Hand soldering is not recommended due to ball visibility limitations and thermal stress risk; rework demands hot-air station with vacuum pickup and IR preheat.

What debug interface is supported and what pins are required?

STM32G031Y8Y6TR supports Serial Wire Debug (SWD) only-no JTAG. SWD requires SWCLK (PA14) and SWDIO (PA13) pins, both shared with GPIO functionality. No external pull-ups are needed; internal weak pull-ups enable enumeration without external components per RM0444 Section 42.7.