STMicroelectronics STM32G070RBT6

Overview

STM32G070RBT6 from STMicroelectronics is an Arm® Cortex®-M0+ 32-bit microcontroller in LQFP64 package, featuring 128 KB Flash, 36 KB SRAM, 4x USART, 12-bit ADC (0.4 µs conversion), and operating voltage range of 2.0–3.6 V. It integrates RTC with alarm, 11 timers (including advanced motor control TIM1), and supports low-power Stop/Standby modes for battery-powered industrial sensors.

For engineers reviewing the STM32G070RBT6 datasheet, STM32G070RBT6 pinout, STM32G070RBT6 application, or STM32G070RBT6 equivalent, key selection criteria include its 64 MHz max CPU frequency, 59 fast I/Os (multiple 5 V-tolerant), hardware CRC unit, dual I²C with Fast-mode Plus (1 Mbit/s), and SWD debug interface - all critical for cost-sensitive, space-constrained embedded control designs.

Technical Context

The device implements a single-core Arm Cortex-M0+ with MPU, executing instructions at up to 64 MHz via internal 16 MHz RC oscillator with PLL or external 4–48 MHz crystal. Its memory subsystem includes 128 KB flash with readout protection and 36 KB SRAM (32 KB with hardware parity), enabling secure firmware execution and robust data handling in real-time control loops.

Clock architecture supports multiple sources: 4–48 MHz HSE, 32 kHz LSE with calibration, 16 MHz HSI16, and 32 kHz LSI. Power management enables Sleep, Stop (0/1), and Standby modes with RTC/VBAT retention, achieving sub-1 µA standby current while maintaining calendar functionality and periodic wakeup capability.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, ECOPACK2-compliant) package with 64-pin grid, 0.5 mm pitch, and exposed thermal pad. Pin mapping validated per STMicroelectronics DS12766 Rev 3 Figure 5 and Table 11.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G030F6P6, STM32G070RBT6 adds RTC, larger memory, and richer peripherals for autonomous operation; versus STM32G0B1RET6, it trades USB and extra RAM for lower cost and identical footprint - ideal for non-USB industrial control where proven reliability matters more than feature headroom.

Availability

STM32G070RBT6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, motor control gateways, and IoT edge controllers requiring stable component supply across multi-year production cycles.

Supply support for STM32G070RBT6 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 products for industrial, automotive, and consumer markets.

The STM32G0 series targets cost-sensitive, low-power embedded applications demanding Arm Cortex-M0+ performance with rich peripheral integration - optimized for industrial automation, home appliances, and smart infrastructure endpoints.

FAQ

What is the maximum operating frequency of the STM32G070RBT6?

The STM32G070RBT6 achieves a maximum CPU clock frequency of 64 MHz, attainable using the internal 16 MHz HSI oscillator with PLL multiplication or an external 4–48 MHz crystal oscillator. This frequency is guaranteed across the full industrial temperature range (–40°C to +85°C) and 2.0–3.6 V supply voltage, enabling deterministic real-time execution for control algorithms.

Does the STM32G070RBT6 support hardware encryption or secure boot?

No, the STM32G070RBT6 does not integrate hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It offers readout protection (RDP) Level 1/2 and write protection for flash sectors, but lacks dedicated security peripherals. For applications requiring certified secure boot or encrypted firmware updates, ST's STM32G081 or STM32L5 series should be considered instead.

Can the STM32G070RBT6 drive 5 V logic directly?

Yes - up to 59 I/O pins are 5 V-tolerant when configured as inputs, meaning they safely accept 5 V signals while powered from a 3.3 V supply. However, output voltage is limited to VDD (max 3.6 V), so external level shifters or open-drain configurations with pull-ups are required for driving 5 V logic high levels reliably.

What debug interface does the STM32G070RBT6 use, and what tools are compatible?

The STM32G070RBT6 uses Serial Wire Debug (SWD) with two dedicated pins: SWDIO and SWCLK. It is fully supported by ST-LINK v2/v3 debug probes, SEGGER J-Link, and OpenOCD-based toolchains. No JTAG header is needed, reducing PCB footprint; SWD enables full flash programming, real-time register inspection, and hardware breakpoints during development and field diagnostics.