STMicroelectronics STM32F070C6T6TR

Overview

STM32F070C6T6TR 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-designed for cost-sensitive industrial control and USB-enabled sensor nodes.

For engineers reviewing the STM32F070C6T6TR datasheet, STM32F070C6T6TR pinout, STM32F070C6T6TR application, or STM32F070C6T6TR equivalent, key selection criteria include USB FS integration, 5V-tolerant GPIO count (up to 39), low-power Stop/Standby modes, and TSSOP20 package compatibility with space-constrained PCB layouts.

Technical Context

This MCU integrates a single-cycle ARM Cortex-M0 core running up to 48 MHz, supported by an 8 MHz internal RC oscillator with PLL multiplication and dual clock sources (4–32 MHz HSE + 32.768 kHz LSE). Its memory subsystem includes 32 KB flash with error correction and 6 KB SRAM with hardware parity checking.

The peripheral set centers on real-time control: one advanced 16-bit timer (TIM1) for 6-channel PWM, seven general-purpose 16-bit timers, RTC with alarm/wakeup, and communication interfaces including two I²C (Fast Mode Plus), four USARTs (one with auto-baud), two SPIs (18 Mbit/s), and USB 2.0 FS with Battery Charging Detection (BCD) and Link Power Management (LPM).

Key Specifications

Pinout & Package

TSSOP20 (6.4 × 4.4 mm, 0.65 mm pitch), ECOPACK2-compliant surface-mount package optimized for compact industrial and consumer PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F030F4P6, STM32F070C6T6TR adds integrated USB FS and +16 KB flash at minimal footprint cost; versus STM32F070CBT6, it trades flash/SRAM capacity and pin count for smaller TSSOP20 size and lower unit price-ideal for volume production of space-limited USB peripherals.

Availability

STM32F070C6T6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, USB human interface devices, smart home actuators, and programmable power monitors requiring stable component supply across multi-year production cycles.

Supply support for STM32F070C6T6TR 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, specializing in microcontrollers, power management, and automotive ICs with strong industrial and consumer market presence.

The STM32F0 series targets cost-optimized, entry-level Cortex-M0 applications-emphasizing USB connectivity, low-power operation, and rapid time-to-market for smart peripherals and basic control systems.

FAQ

What is the maximum operating frequency and how is it achieved?

The STM32F070C6T6TR runs at up to 48 MHz using its internal 8 MHz RC oscillator multiplied by a 6× PLL. Alternatively, an external 4–32 MHz crystal can feed the PLL for higher precision timing. The system clock is distributed via the AHB/APB bus matrix, with all peripherals operating at full speed unless prescaled.

Does this MCU support USB device functionality without external components?

Yes-it integrates a full-speed USB 2.0 PHY with internal transceivers and BCD/LPM support. Only a 1.5 kΩ pull-up resistor on USB_DP is required for device enumeration; no external PHY, level shifters, or ESD protection diodes are mandatory for basic operation per ST's USB design guidelines.

How many I/O pins are 5V tolerant and which ones are they?

Up to 39 I/Os are 5V tolerant, including all PAx, PBx, and PCx pins except PA11/PA12 (USB_DP/DM) and NRST. Tolerance is verified across the full operating temperature range (–40°C to +85°C) and does not require external clamping diodes when driven by 5V logic.

What debug interface is supported and what pins are required?

Serial Wire Debug (SWD) is supported using PA13 (SWDIO) and PA14 (SWCLK). No reset pin connection is required for SWD operation, enabling debugging and programming with only two signal lines plus GND and VDD for target power-ideal for production programming fixtures.