STMicroelectronics STM32G070CBT6

Overview

STM32G070CBT6 from STMicroelectronics is an Arm® Cortex®-M0+ 32-bit microcontroller with 128 KB Flash, 36 KB SRAM, operating at up to 64 MHz, supporting 4 USARTs, 12-bit ADC (0.4 µs conversion), and RTC with wakeup from Stop/Standby - deployed in industrial sensor nodes requiring low-power connectivity and real-time control.

For engineers reviewing the STM32G070CBT6 datasheet, STM32G070CBT6 pinout, STM32G070CBT6 application, or STM32G070CBT6 equivalent, key selection criteria include its 64-pin LQFP package, 59 fast I/Os (including 5 V-tolerant), dual I²C with Fast-mode Plus, four USARTs with LIN/IrDA support, and hardware CRC unit for firmware integrity verification.

Technical Context

The STM32G070CBT6 integrates an Arm Cortex-M0+ core with MPU, internal 16 MHz RC oscillator + PLL for clock scaling, and a dedicated CRC calculation unit for secure firmware updates. Its memory subsystem includes 128 KB flash with readout protection and 36 KB SRAM (32 KB with hardware parity).

Power architecture supports three low-power modes (Sleep, Stop, Standby) with VBAT backup for RTC and registers; clock system includes 4–48 MHz HSE, 32 kHz LSE with calibration, and ±5% internal 32 kHz RC - enabling precise timekeeping and rapid wake-up (<5 µs from Sleep).

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, ECOPACK2-compliant) with 64 pins; 59 are user-configurable I/Os, including multiple 5 V-tolerant inputs and dedicated SWD debug interface (SWCLK/SWDIO/NRST).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G030F6P6, the STM32G070CBT6 provides 8× more Flash, integrated RTC with calendar, and 59 I/Os versus 16 - making it viable for feature-rich sensor hubs. Versus STM32G0B1RET6, it trades USB/DAC for lower cost and identical package footprint - ideal for cost-sensitive industrial control where USB is unnecessary.

Availability

STM32G070CBT6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interfaces, motor control actuators, and home appliance UI controllers requiring stable component supply across multi-year production cycles.

Supply support for STM32G070CBT6 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 analog products for industrial, automotive, and consumer markets.

The STM32G0 series targets cost-sensitive, low-power embedded applications - delivering Cortex-M0+ performance with enhanced security features, robust analog peripherals, and streamlined development tools for rapid time-to-market.

FAQ

What is the maximum operating frequency of the STM32G070CBT6?

The STM32G070CBT6 operates at up to 64 MHz using its internal 16 MHz RC oscillator with PLL multiplication or an external crystal up to 48 MHz. This frequency is fully supported across the −40°C to +85°C range with 2.0–3.6 V supply, and all peripherals (timers, ADC, communication interfaces) are rated for full-speed operation at this clock rate.

Does the STM32G070CBT6 support hardware encryption or secure boot?

No - the STM32G070CBT6 does not include hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It supports readout protection (RDP) Level 1 and write protection for Flash/SRAM, but secure firmware validation must be implemented in software using its hardware CRC unit and external trusted elements if required.

Can the STM32G070CBT6 drive 5 V logic directly?

Yes - up to 52 of its 59 GPIOs are 5 V-tolerant on input (including all alternate function pins), allowing direct connection to 5 V peripherals without external level shifters. However, its I/Os output only up to VDD (max 3.6 V), so external drivers or translators are needed for 5 V output signaling.

What debug interface does the STM32G070CBT6 use, and is JTAG supported?

The STM32G070CBT6 uses Serial Wire Debug (SWD) with two dedicated pins: SWCLK and SWDIO. JTAG is not supported - the debug port is SWD-only, which reduces pin count and PCB routing complexity while maintaining full programming, breakpoint, and real-time trace capability via ST-LINK-compatible debuggers.