STM32G031F8P3 - 64MHz Cortex-M0+ 64KB MCU | STMicroelectronics
MPN: STM32G031F8P3 ✓ ActiveSTM32G031F8P3 Overview
A microcontroller is a programmable semiconductor that integrates a CPU core, memory, and peripherals such as timers, communication interfaces, analog converters, and GPIO into one package. The STM32G0 product hierarchy places this device among Arm Cortex-M0+ embedded processors, where the reduced instruction set, low power behavior, and compact package support cost-sensitive control systems, sensors, consumer accessories, industrial equipment, and connected products.
The STM32G031F8P3 combines a 64 MHz Cortex-M0+ core with 64 KB of Flash and 8 KB of SRAM. Its 32-bit architecture provides efficient execution of control routines, communication handlers, and peripheral servicing while requiring a relatively small embedded code footprint. Hardware Flash protection and a securable area are listed among the memory features, helping isolate critical firmware and supporting product-security designs. Operating-temperature options listed for the STM32G031F8 family include -40°C to 85°C, -40°C to 105°C, and -40°C to 125°C.
The device integrates a 12-bit Analog-to-Digital Converter, high-resolution timers, communication interfaces, and GPIO into a 20-TSSOP footprint. These resources support designs that need to measure analog inputs, generate precise timing signals, operate control loops, and communicate with sensors or external controllers. Its 64 MHz maximum clock frequency provides additional timing margin for multitasking, protocol handling, and real-time control without requiring a higher-performance Cortex-M core.
Typical applications include compact motor controllers, building and industrial automation modules, low-cost sensor nodes, appliance control boards, battery-powered instruments, and USB Type-C accessories. The small 20-pin TSSOP package simplifies board assembly, while the combination of SRAM, Flash, analog conversion, timers, and serial interfaces supports consolidation of multiple discrete functions into a single embedded controller.
Designers should select decoupling capacitors from the manufacturer reference schematic, verify every alternate-function pin against the device datasheet, and confirm the programming and debug interface arrangement before layout release. Because the 20-pin package exposes a limited number of GPIO and power pins, pin multiplexing should be planned early enough to prevent conflicts among communications, timers, analog inputs, and debug functions.
This product page combines manufacturer specifications, package information, replacement guidance, and practical design considerations to help engineers evaluate the STM32G031F8P3 for embedded-control designs.
Drop-in alternatives for STM32G031F8P3 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with STM32G031F8P3 (same form factor and footprint) — differing in Flash Memory, Architecture, Operating Temperature Range, Operating Voltage Range.
STM32G031F8P6
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.0664 / Unit
View Datasheet →STM32G051F8P6
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM32G061F8P6
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM32G071F8P6
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM32G081F8P6
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
STM32G031F8P3 Maximum Ratings & Electrical Characteristics
| Product Type | 32-bit Arm Cortex-M0+ microcontroller |
| Maximum CPU Frequency | 64 MHz |
| CPU Core | Arm Cortex-M0+ |
| Architecture | 32-bit RISC |
| Flash Memory | 64 KB |
| Flash Organization | 64K x 8 |
| SRAM | 8 KB |
| SRAM Parity Protection | Hardware parity check |
| Flash Protection | Available with protection |
| Securable Area | Available |
| ADC Resolution | 12 bit |
| Operating Temperature Range | -40°C to 85°C, -40°C to 105°C, or -40°C to 125°C depending on ordering option |
| Package | 20-pin TSSOP |
| Mounting Type | Surface mount |
| Product Series | STM32G0 mainstream series |
STM32G031F8P3 20-pin tssop Pin Configuration Guide
Pin configuration for STM32G031F8P3 (20-pin tssop package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for STM32G031F8P3.
Refer to the datasheet for full pin configuration.
Typical Applications
STM32G031F8P3 is suitable for 6 applications: Compact Industrial Sensor Node, Small Motor Control Controller, USB Type-C Accessory Controller, Appliance Control Board, Building Automation Controller, Battery-Powered Measurement Instrument.
Compact Industrial Sensor Node
The STM32G031F8P3 fits compact sensor nodes that acquire analog measurements and apply local filtering or control logic. Its 12-bit ADC and 64 MHz Cortex-M0+ core provide dedicated sampling and processing capability, while 8 KB of SRAM supports short control routines and communication buffers. The 20-TSSOP package limits board area, and 64 KB of Flash is sufficient for compact firmware containing sensor acquisition, filtering, diagnostics, and a communication protocol. GPIO count and alternate-function availability should be checked early when several sensors, status indicators, and a serial interface must share the limited package pins.
Recommended
Small Motor Control Controller
The STM32G031F8P3 is suitable for compact motor controllers requiring accurate timing, digital feedback, and local current or position sensing. Its high-resolution timer resources can support PWM generation and input capture, while the 12-bit ADC can monitor analog feedback signals. The 64 MHz Cortex-M0+ core leaves processing headroom for commutation logic, fault handling, and communication. Engineers should select the precise STM32G031F8 device variant that exposes the required timer channels on the 20-pin TSSOP footprint and confirm whether an external driver is needed for the motor voltage and current level.
Recommended
USB Type-C Accessory Controller
The STM32G031F8P3 can serve as the embedded controller in a small USB Type-C accessory when the selected STM32G031F8 variant includes the required USB interface. Its 64 MHz Cortex-M0+ core handles protocol transactions, configuration logic, and control tasks, while 8 KB of SRAM accommodates short buffers and state machines. The 20-TSSOP footprint supports compact products where connector placement and board area are constrained. Designers must confirm USB pin availability, clock requirements, power-supply sequencing, and whether the accessory needs data-role switching or only control logic.
Recommended
Appliance Control Board
The STM32G031F8P3 is well matched to appliance controls that combine digital inputs, motor or relay outputs, analog sensing, and local status indication. Its 64 MHz processing capacity supports responsive state-machine control, debouncing, diagnostics, and communication updates without a larger application processor. The 64 KB Flash and 8 KB SRAM provide a practical memory base for compact appliances, while the 20-pin TSSOP package supports automated assembly. Pin budgeting is essential because relay drivers, sensors, programming signals, and communication interfaces can compete for the available GPIO and alternate-function positions.
Recommended
Building Automation Controller
The STM32G031F8P3 is appropriate for distributed building-automation nodes that supervise inputs, operate outputs, and report status over a serial network. Its 12-bit ADC supports analog sensor conditioning, and its 64 MHz core can handle periodic sampling, debounce logic, fault detection, and protocol servicing. The 20-TSSOP package fits space-constrained DIN-rail or wall-mount modules, while 8 KB of SRAM is suitable for bounded control tasks. For network-connected deployments, select an ordering variant with the required communication peripheral and verify its pin availability and protocol support.
Recommended
Battery-Powered Measurement Instrument
The STM32G031F8P3 supports battery-powered measurement instruments that need local acquisition, signal processing, and a serial data interface. Its 12-bit ADC handles typical analog sensor inputs, while the 64 MHz Cortex-M0+ core can perform filtering, calibration, and unit conversion within constrained latency. The 64 KB Flash and 8 KB SRAM fit focused embedded firmware without requiring external memory in many designs. Low-power behavior and analog accuracy must be evaluated from the exact device datasheet, while decoupling and regulator selection should be chosen to minimize supply noise and energy use.
Recommended
Recommended Products Summary
Engineering reference data for STM32G031F8P3 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32G031F8P6 | STM32G051F8P6 | STM32G061F8P6 | STM32G071F8P6 | STM32G081F8P6 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 20-TSSOP | 20-TSSOP | 20-TSSOP | 20-TSSOP | 20-TSSOP | 20-TSSOP |
| CPU Core | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Architecture | 32-bit RISC | 32-bit RISC | 32-bit RISC | 32-bit RISC | 32-bit RISC | 32-bit RISC |
Key Differentiators
- Compact 20-pin integration (vs STM32G081F8P6)
- 64 MHz Cortex-M0+ performance (vs STM32G031F8P6)
- Integrated analog acquisition (vs STM32G031F8P6)
- Mainstream STM32G0 positioning (vs STM32G071F8P6)
Design Notes
Place the MCU input and output decoupling capacitors at the pins identified in the manufacturer reference schematic. Use the shortest possible ground return from each capacitor and avoid routing sensitive analog inputs beside the switching node of an external regulator or motor driver. Confirm the supply voltage, decoupling value, startup sequence, and maximum pin current from the exact STM32G031F8 datasheet before release.
Complete the alternate-function pin budget before schematic capture. The 20-TSSOP package provides limited pins for SWD programming, clock, communications, ADC inputs, timers, and control outputs. Mark every programming, reset, and communication signal in the schematic, then cross-check all selected functions against the package pin table to prevent conflicts that only appear during PCB layout.
Keep the 12-bit ADC signal path away from high-current switching nodes and digital clock edges. Use a compact return path for analog ground, place analog input components near their assigned pins, and follow the reference schematic's filtering arrangement. Treat the ADC's effective accuracy as dependent on source impedance, acquisition time, reference stability, and PCB layout rather than resolution alone.
Do not infer compatibility from the shared 20-TSSOP footprint alone. Before replacing the STM32G031F8P3 with another STM32G0 device, verify power pins, SWD and boot pins, oscillator connections, ADC channels, timer channels, communication functions, memory requirements, and temperature grade. Also confirm that the replacement's firmware startup files and device identifier support the intended production and debugging workflow.
Compliance Information
Compliance attributes require confirmation from the current manufacturer product documentation or declaration for the exact ordering code.