STMicroelectronics STM32F072C8U6

Overview

STM32F072C8U6 from STMicroelectronics is a 32-bit Arm® Cortex®-M0 microcontroller with 64 KB Flash, 16 KB SRAM, crystal-less USB 2.0 Full-Speed interface, CAN 2.0B controller, and integrated 12-bit ADC/DAC - deployed in industrial sensor nodes, USB-connected HMI modules, and CAN-based building automation controllers.

For engineers reviewing the STM32F072C8U6 datasheet, STM32F072C8U6 pinout, STM32F072C8U6 application, or STM32F072C8U6 equivalent, key selection criteria include USB clocking autonomy (48 MHz internal oscillator with BCD/LPM), 5V-tolerant GPIO count (up to 68 pins), CAN+USB coexistence capability, and VDDIO2 support for mixed-voltage I/O domains.

Technical Context

The STM32F072C8U6 integrates a single-cycle Cortex-M0 core running at up to 48 MHz, coupled with a clock recovery system (CRS) enabling precise USB timing without external crystal. Its memory subsystem includes 64 KB of Flash with error correction and 16 KB of HW-parity SRAM, supporting deterministic real-time execution.

Peripheral integration centers on dual high-speed communication coexistence: a full-featured CAN 2.0B controller (bit rate up to 1 Mbit/s) and a USB 2.0 FS device interface with Battery Charging Detection (BCD) and Link Power Management (LPM), both operable from the internal 48 MHz HSI48 oscillator - eliminating need for external timing components in cost-sensitive USB-CAN edge nodes.

Key Specifications

Pinout & Package

STM32F072C8U6 is housed in a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch) with exposed thermal pad - optimized for compact industrial PCBs requiring thermal efficiency and reflow compatibility.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F072C8U6, the STM32F070F6P6 sacrifices CAN and USB for lower cost and smaller footprint, while the STM32F072RBT6 retains full feature parity but offers higher Flash capacity and pin count - making it ideal for scalable product families where future firmware expansion is anticipated.

Availability

STM32F072C8U6 is available at Aetrix Electronics and suitable for industrial sensor nodes, USB human-machine interfaces, and building automation gateways requiring stable component supply, long-term manufacturability, and ST's 10-year longevity commitment.

Supply support for STM32F072C8U6 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 STM32F0 series targets cost-sensitive, resource-constrained embedded applications requiring ARM Cortex-M0 performance, USB/CAN connectivity, and robust industrial qualification - with emphasis on ease of certification and rapid time-to-market.

FAQ

Does STM32F072C8U6 support crystal-less USB operation?

Yes. The device integrates a 48 MHz internal HSI48 oscillator with Clock Recovery System (CRS), which synchronizes to the USB Start-of-Frame (SOF) token to maintain ±0.25 % timing accuracy - eliminating need for an external 12 MHz crystal in USB device applications.

What is the maximum number of 5V-tolerant I/Os on STM32F072C8U6?

The STM32F072C8U6 provides 37 I/O pins, all of which are 5V tolerant. This is confirmed in Section 3.7 of the DS9826 datasheet and enables direct interfacing with 5 V logic, sensors, and industrial I/O standards without level-shifting circuitry.

Can the internal 12-bit DAC drive a 1 kΩ load with full-scale linearity?

Yes. According to Table 60 in DS9826, the DAC output drives loads ≥5 kΩ with guaranteed monotonicity and INL ≤ ±1 LSB. For a 1 kΩ load, external op-amp buffering is recommended to preserve accuracy and settling time - the DAC itself is not specified for direct 1 kΩ driving.

Is VDDIO2 supported on STM32F072C8U6, and which pins use it?

Yes. VDDIO2 (1.65–3.6 V) powers selected I/Os including PA9–PA12, PB3–PB8, and PC6–PC9. This allows independent voltage scaling for USB and CAN I/O domains, enabling mixed-voltage system design while maintaining signal integrity per DS9826 Section 3.5.1.