STMicroelectronics STM32G070KBT6

Overview

STM32G070KBT6 from STMicroelectronics is an Arm® Cortex®-M0+ 32-bit microcontroller in LQFP32 package, featuring 128 KB Flash, 36 KB SRAM, 4x USART, 12-bit ADC (0.4 µs conversion), and operating at up to 64 MHz across -40°C to +85°C. It integrates RTC with alarm/wakeup, 7-channel DMA, and supports ISO7816, LIN, IrDA, and SPI-over-USART for industrial control and smart sensor node applications.

For engineers reviewing the STM32G070KBT6 datasheet, STM32G070KBT6 pinout, STM32G070KBT6 application, or STM32G070KBT6 equivalent, key selection criteria include its 32-pin LQFP footprint, 2.0–3.6 V supply range, hardware parity-checked SRAM, Fast-mode Plus I²C (1 Mbit/s), and dual watchdog timers (IWDG/WWDG) for safety-critical firmware execution.

Technical Context

The STM32G070KBT6 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 checking-enabling robust code/data integrity verification in real-time systems.

Clock management supports multiple sources: 32 kHz LSE with calibration, 32 kHz LSI (±5%), and HSI16 with ±1% accuracy at 25°C. Peripheral interconnect uses a hierarchical AHB/APB bus matrix, enabling concurrent DMA transfers (e.g., ADC→SRAM) while CPU executes from flash with prefetch buffer and branch cache.

Key Specifications

Pinout & Package

LQFP32 (7 × 7 mm, 0.8 mm pitch) package with exposed thermal pad (ECOPACK2-compliant). Pin count and I/O mapping optimized for compact industrial control modules and space-constrained IoT endpoints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G030K6T6, the STM32G070KBT6 provides 2× Flash and 4.5× SRAM with parity - critical for complex control algorithms and OTA updates; versus STM32G071KBT6, it omits crypto engines but maintains identical real-time performance and peripheral set at lower unit cost.

Availability

STM32G070KBT6 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, smart energy meters, wireless sensor nodes, and home appliance control systems requiring stable component supply across multi-year production cycles.

Supply support for STM32G070KBT6 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, and MEMS sensors for industrial, automotive, and consumer markets.

The STM32G0 series targets cost-sensitive, ultra-low-power embedded applications demanding Arm Cortex-M0+ performance with rich analog/peripheral integration - optimized for smart sensors, industrial controls, and battery-powered edge devices.

FAQ

What is the maximum operating frequency of the STM32G070KBT6?

The STM32G070KBT6 achieves a maximum CPU clock frequency of 64 MHz, attainable using the internal 16 MHz RC oscillator with PLL multiplication or an external 4–48 MHz crystal. This frequency is guaranteed across the full -40°C to +85°C industrial temperature range and 2.0–3.6 V supply voltage, with timing validated per DS12766 Rev 3 Section 5.3.21.

Does the STM32G070KBT6 support hardware encryption?

No, the STM32G070KBT6 does not include hardware cryptographic accelerators such as AES or TRNG. These features are present in the pin-compatible STM32G071KBT6 variant. The G070 focuses on deterministic real-time control and analog integration, omitting crypto blocks to reduce die size and cost while retaining full peripheral compatibility.

How many I²C interfaces does the STM32G070KBT6 have, and what are their capabilities?

The STM32G070KBT6 integrates two I²C-bus interfaces. One supports Fast-mode Plus (1 Mbit/s) with extra current sink for driving higher bus capacitance, and both support SMBus/PMBus protocols. One interface additionally enables wakeup from Stop mode, allowing low-power sensor hubs to respond to I²C commands without full MCU activation.

What debug interface is supported, and is JTAG available?

The STM32G070KBT6 supports Serial Wire Debug (SWD) only - a 2-pin interface (SWDIO and SWCLK) that provides full programming, debugging, and real-time trace capabilities. JTAG is not implemented; SWD is electrically and functionally compatible with ST-LINK v2.1 and v3 debug probes, and occupies minimal PCB area compared to 5-pin JTAG.