STMicroelectronics STM32F070C6T6

Overview

STM32F070C6T6 from STMicroelectronics is an ARM Cortex-M0 32-bit microcontroller with 32 KB flash, 6 KB SRAM, USB 2.0 Full-Speed interface, 12-bit ADC (1.0 µs conversion), and operates from 2.4–3.6 V supply. It integrates 11 timers-including one advanced-control timer for six-channel PWM-and supports up to 39 GPIOs in its TSSOP20 package, targeting cost-sensitive industrial control and USB-enabled sensor nodes.

For engineers reviewing the STM32F070C6T6 datasheet, STM32F070C6T6 pinout, STM32F070C6T6 application, or STM32F070C6T6 equivalent, key selection criteria include USB FS support without external PHY, 5V-tolerant I/Os on selected pins, low-power Stop/Standby modes with RTC wakeup, and compatibility with STM32CubeMX for clock/peripheral configuration.

Technical Context

The STM32F070C6T6 implements a single-cycle ARM Cortex-M0 core running at up to 48 MHz, paired with a dedicated 8 MHz internal RC oscillator and PLL for USB clock generation. Its memory subsystem includes 32 KB of flash with error correction and 6 KB of SRAM with hardware parity checking-enabling robust operation in noise-prone environments.

Clock management supports multiple sources: 4–32 MHz external crystal, 32.768 kHz RTC crystal, and internal oscillators (8 MHz HSI, 40 kHz LSI). Power management includes POR/PDR, programmable voltage detectors, and three low-power modes (Sleep, Stop, Standby) with sub-µA standby current and RTC retention.

Key Specifications

Pinout & Package

TSSOP20 (6.4 × 4.4 mm) package with 20-pin surface-mount footprint, ECOPACK2-compliant, rated for industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F030F4P6, the STM32F070C6T6 adds USB FS and doubles flash/SRAM; versus STM32F070CBT6, it trades memory and pin count for lower cost and smaller footprint-ideal for volume USB-peripheral designs where space and BOM cost are critical.

Availability

STM32F070C6T6 is available at Aetrix Electronics and suitable for industrial sensor nodes, USB HID peripherals, smart lighting controllers, and power supply monitors requiring stable component supply across multi-year production cycles.

Supply support for STM32F070C6T6 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 ICs, MEMS, and automotive semiconductors since 1987.

The STM32F0 series targets cost-optimized, entry-level ARM Cortex-M0 applications in industrial automation, consumer electronics, and appliance control-emphasizing integration, low power, and USB connectivity without premium pricing.

FAQ

What is the maximum operating frequency of the STM32F070C6T6?

The STM32F070C6T6 runs its ARM Cortex-M0 core at up to 48 MHz, achieved via internal 8 MHz RC oscillator multiplied by a 6× PLL. This frequency is fully supported across the entire industrial temperature range (–40°C to +85°C) and supply voltage (2.4–3.6 V), with all peripherals-including USB and ADC-operating reliably at this speed.

Does the STM32F070C6T6 support USB device functionality without external components?

Yes-the STM32F070C6T6 integrates a full-speed USB 2.0 transceiver compliant with USB Specification Revision 2.0. It requires only two 27 Ω series resistors on DP/DM lines and a 1.5 kΩ pull-up resistor on DP for enumeration. No external PHY or voltage translator is needed, making it a true single-chip USB device solution.

How many I/O pins are 5V tolerant on the TSSOP20 package?

In the TSSOP20 package, 16 GPIOs (PA0–PA7 and PB0–PB7) are 5V tolerant when configured in input, output, or alternate function modes. This is confirmed in Section 6.3.14 (I/O port characteristics) of DS10697 Rev 4, Table 44, which specifies V_IH(max) = 5.5 V for these pins-enabling direct connection to 5V logic without external protection.

Can the STM32F070C6T6 enter low-power modes while retaining RTC and RAM contents?

Yes-in Stop mode, the STM32F070C6T6 retains both RTC calendar/time registers and full 6 KB SRAM contents while consuming typically 1.9 µA (at 3.3 V, 25°C). The RTC continues running from the LSE (32.768 kHz) oscillator and can generate wakeup events, allowing precise timed operations with minimal energy use between active intervals.