My Inquiry
My Account
STMicroelectronics STM32G051C6U6
- Part No.:
- STM32G051C6U6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32G051C6U6.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48UFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,522
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32G051C6U6 from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller in UFQFPN28 package, operating up to 64 MHz with 32 KB Flash and 18 KB SRAM. It integrates dual 12-bit DACs, 12-bit ADC (0.4 µs conversion), two analog comparators, RTC with calendar, and communication interfaces including two I²C (Fast-mode Plus), two USARTs (one with ISO7816/LIN/IrDA), and two SPIs - deployed in industrial sensor nodes requiring low-power operation and mixed-signal control.
For engineers reviewing the STM32G051C6U6 datasheet, STM32G051C6U6 pinout, STM32G051C6U6 application, or STM32G051C6U6 equivalent, key selection criteria include its 28-pin UFQFPN footprint, 1.7–3.6 V supply range, -40°C to 85°C temperature grade, 14-timer suite (including two low-power timers), and SWD debug support for rapid firmware validation.
Technical Context
The device implements an Arm Cortex-M0+ core with MPU, supporting TrustZone-like memory protection via securable flash area and hardware parity on 16 KB of SRAM. Its clock system combines 4–48 MHz HSE, 32 kHz LSE with calibration, and internal 16 MHz HSI with PLL - enabling precise timing for synchronous serial protocols and real-time motor control loops.
Analog subsystem integration includes rail-to-rail comparators with programmable hysteresis and output routing, dual independent DACs with sample-and-hold, and ADC oversampling up to 16-bit resolution - all synchronized via DMA request multiplexer and shared bus matrix for deterministic data flow in closed-loop sensing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 64 MHz max - enables deterministic real-time task scheduling with <100 ns interrupt latency. |
| Flash / RAM | 32 KB Flash (with securable area), 18 KB SRAM (16 KB with HW parity) - supports secure bootloader and safety-critical variable storage. |
| ADC | 12-bit, 0.4 µs conversion, up to 16 external channels - delivers 2.5 MSPS sampling for fast transient detection in power monitoring. |
| DAC | Two 12-bit DACs with low-power sample-and-hold - enables simultaneous analog waveform generation for sensor calibration or actuator biasing. |
| Timers | 14 timers: two 128 MHz-capable advanced timers, five 16-bit general-purpose, two low-power 16-bit - supports PWM-driven BLDC commutation and periodic wake-up from Stop mode. |
| I/O Voltage Tolerance | Multiple 5 V-tolerant pins - allows direct interfacing with legacy 5 V logic without level shifters in industrial I/O modules. |
| Operating Voltage | 1.7–3.6 V - compatible with single-cell Li-ion, coin-cell backup (VBAT), and wide-input DC-DC converter outputs. |
Pinout & Package
STM32G051C6U6 uses a 28-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN28) package, 4 mm × 4 mm, 0.5 mm pitch, with exposed thermal pad. Pin assignment conforms to ST's standard STM32G0x1 pinout layout for UFQFPN28 (A0B0 marking).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O domain operation; decoupling required per datasheet layout guidelines. |
| PA0–PA15, PB0–PB11, PC13–PC15 | General-purpose I/Os | 44 total GPIOs; 28 used in UFQFPN28 variant - all mappable to EXTI, supporting edge-triggered wake-up from low-power modes. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.65–5.5 V logic - enables robust reset signaling across mixed-voltage systems. |
| SWDIO / SWCLK | Serial Wire Debug interface | 2-pin debug port supporting full SWD protocol - enables non-intrusive firmware update and real-time variable inspection during field deployment. |
| VREF+ / VREF- | Analog reference inputs | Enable external precision reference for ADC/DAC - critical for high-accuracy current/voltage measurement in energy metering designs. |
Key Features
| Feature | Design Value |
|---|---|
| Low-power modes (Stop/Standby/Shutdown) | Standby current as low as 0.29 µA - extends battery life in wireless sensor endpoints with infrequent wake-up events. |
| Programmable Brownout Reset (BOR) | Configurable threshold (2.0/2.2/2.4/2.7 V) - prevents erratic operation during brownout conditions in unregulated power supplies. |
| Hardware CRC calculation unit | 32-bit CRC with configurable polynomial - accelerates firmware integrity checks and secure OTA update verification. |
| Calendar RTC with alarm | Accurate timekeeping with ±5 ppm drift over -40°C to 85°C - enables scheduled sensor sampling and time-stamped event logging without external RTC. |
| USB-less DFU via USART | Bootloader supports firmware updates over UART using ST's DFU protocol - eliminates need for dedicated programming hardware in production test. |
Applications
| Industrial Sensor Node | Smart Meter Front-End |
|---|---|
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ with local signal conditioning and LoRaWAN transmission. IC Role / Device Role / Timing Role: Central MCU managing ADC sampling, DAC-based sensor excitation, RTC-triggered sleep/wake cycles, and UART-based modem control. Use Value: Integrated low-power timers and 0.29 µA Standby current enable >5-year battery life; dual DACs simplify multi-sensor calibration without external components. | Use Scenario: Electricity meter front-end acquiring voltage/current waveforms, computing RMS/power metrics, and communicating via RS-485. IC Role / Device Role / Timing Role: Real-time acquisition controller synchronizing 12-bit ADC sampling at 10 kSPS, performing FFT-based harmonic analysis, and driving isolated RS-485 transceiver via USART. Use Value: 0.4 µs ADC conversion and hardware oversampling deliver 16-bit effective resolution; 5 V-tolerant I/Os interface directly with RS-485 level shifters. |
| Motor Control Module | IoT Edge Gateway |
Use Scenario: Compact BLDC motor driver for HVAC fan control, implementing six-step commutation and thermal monitoring. IC Role / Device Role / Timing Role: Motion controller generating complementary PWM signals via TIM1, reading hall-effect sensors via GPIO/EXTI, and measuring motor current via ADC. Use Value: Two 128 MHz-capable timers provide sub-microsecond PWM dead-time insertion; integrated comparators enable fast overcurrent shutdown (<1 µs response). | Use Scenario: Industrial gateway aggregating Modbus RTU data from PLCs and forwarding via Ethernet/Wi-Fi using external host processor. IC Role / Device Role / Timing Role: Protocol bridge MCU handling Modbus framing, CRC validation, and UART-to-SPI translation for peripheral expansion. Use Value: Dual I²C (Fast-mode Plus) and two SPIs allow concurrent connection to EEPROM, RTC, and secure element; SWD debug enables field firmware patching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G031F6P6 | 20-pin TSSOP, 32 KB Flash, no DAC, single 12-bit ADC channel | Lacks dual DAC and second ADC channel; fewer timers and I/Os | Select when cost-sensitive, space-constrained designs omit analog waveform generation or multi-channel sensing. |
| STM32G071CBT6 | 48-pin LQFP, 128 KB Flash, 36 KB SRAM, USB 2.0 FS, additional peripherals | Includes USB, more timers, larger memory - higher BOM cost and PCB area | Choose when USB device connectivity or expanded peripheral count justifies larger footprint and budget. |
Compared with STM32G031F6P6, STM32G051C6U6 adds dual DACs and enhanced analog capability for closed-loop control; versus STM32G071CBT6, it trades USB and memory headroom for lower cost and smaller 4×4 mm footprint - ideal for size- and power-constrained embedded nodes.
Availability
STM32G051C6U6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter front-ends, motor control modules, and IoT edge gateways requiring stable component supply across extended product lifecycles.
Supply support for STM32G051C6U6 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, designing and manufacturing microcontrollers, power management ICs, sensors, and analog devices for industrial, automotive, and consumer markets.
The STM32G0 series targets cost-sensitive, ultra-low-power embedded applications - delivering Cortex-M0+ performance with advanced analog integration and robust security features in compact packages.
FAQ
What is the maximum operating frequency and corresponding supply voltage range?
The STM32G051C6U6 achieves 64 MHz CPU frequency across its full 1.7–3.6 V operating voltage range. At 1.7 V, maximum frequency is reduced to 24 MHz per datasheet Section 5.3.1; full 64 MHz operation requires ≥2.0 V supply. Internal voltage regulator ensures stable core voltage regardless of I/O domain fluctuations.
Does this MCU support hardware encryption or secure boot features?
STM32G051C6U6 includes readout protection (RDP) Level 1 and Level 2, securable flash area, and hardware CRC unit - but lacks dedicated cryptographic accelerators (AES, PKA) or true secure boot ROM. Secure firmware updates require external secure element or software-based signature verification leveraging its securable flash and RDP enforcement.
Can the internal 32 kHz RC oscillator be used for RTC calibration?
No - the internal 32 kHz RC oscillator has ±5% accuracy and is unsuitable for RTC timekeeping. The RTC must use either the 32.768 kHz external crystal (LSE) or the calibrated internal LSI (±40% typical, not calibrated). Datasheet Table 40 specifies LSE frequency tolerance of ±20 ppm, making it the recommended source for accurate calendar operation.
How many I²C interfaces support Fast-mode Plus (1 Mbit/s) and wakeup from Stop mode?
One I²C interface (I²C1) supports Fast-mode Plus (1 Mbit/s) with extra current sink and wakeup from Stop mode. The second I²C (I²C2) supports Fast-mode Plus but does not support Stop mode wakeup - confirmed in Section 3.20 and Table 8 of DS13303 Rev 4. This distinction is critical for low-power sensor hub designs requiring I²C peripheral wake-up capability.
STM32G051C6U6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-UFQFN Exposed Pad
- Series:
- STM32G0
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 64MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, SmartCard, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 44
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 18K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.7V ~ 3.6V
- Data Converters:
- A/D 19x12b SAR; D/A 2x12b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G051C6U6 FAQ
1.How can I place an order for STM32G051C6U6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G051C6U6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32G051C6U6 reliable?
The price and inventory of STM32G051C6U6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G051C6U6 is usually 5 days.
3.What payment methods are accepted for STM32G051C6U6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G051C6U6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G051C6U6?
STM32G051C6U6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G051C6U6 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32G051C6U6?
For technical support, including STM32G051C6U6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G051C6U6 requirements.
6.How does Aetrix verify that STM32G051C6U6 is sourced from the original manufacturer or authorized distributors?
All STM32G051C6U6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32G051C6U6 meets industry standards.
7.What is the process for return or replacement of STM32G051C6U6?
All STM32G051C6U6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G051C6U6, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32G051C6U6 part is unused and in its original packaging.
Return procedure for STM32G051C6U6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32G051C6U6 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
