STMicroelectronics STM32F072C8U7

Overview

STM32F072C8U7 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 gateways.

For engineers reviewing the STM32F072C8U7 datasheet, STM32F072C8U7 pinout, STM32F072C8U7 application, or STM32F072C8U7 equivalent, key selection criteria include USB clocking autonomy (48 MHz internal oscillator with trimming), 5V-tolerant I/O count (up to 68 pins), CAN+USB coexistence capability, and VDDIO2 support for mixed-voltage peripheral interfacing.

Technical Context

The STM32F072C8U7 integrates a single-cycle Cortex-M0 core running at up to 48 MHz, paired with a dedicated Clock Recovery System (CRS) that synchronizes the internal 48 MHz HSI48 oscillator to USB SOF packets - eliminating external crystal requirements for USB operation. Its memory subsystem includes 64 KB of Flash with error correction (ECC) on SRAM and CRC calculation unit for firmware integrity verification.

Peripheral co-scheduling is enabled by a 7-channel DMA controller supporting concurrent transfers across USB, CAN, ADC, and multiple USARTs; the advanced-control timer (TIM1) delivers six-channel complementary PWM with dead-time insertion for motor control, while two independent watchdogs (IWDG/WWDG) provide layered system safety.

Key Specifications

Pinout & Package

STM32F072C8U7 is housed in a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are validated per ST's DS9826 Rev 6 datasheet Section 5 (Pinouts and pin descriptions) and Table 14 (STM32F072x8/xB pin definitions).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F072R8T6, the C8U7 trades I/O count and package size for compactness and lower assembly cost; versus STM32F042F6P6, it adds CAN, crystal-less USB, and enhanced analog capability - making it optimal for space-constrained, multi-protocol edge nodes.

Availability

STM32F072C8U7 is available at Aetrix Electronics and suitable for industrial sensor nodes, USB human-machine interfaces, and building automation gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32F072C8U7 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 automotive semiconductors since 1987.

The STM32F0 series targets cost-sensitive, resource-efficient embedded applications - emphasizing USB connectivity, analog integration, and ultra-low-power operation for industrial and consumer edge devices.

FAQ

Does STM32F072C8U7 require an external crystal for USB operation?

No. The device features an internal 48 MHz HSI48 oscillator with automatic trimming via the Clock Recovery System (CRS), synchronized to USB Start-of-Frame (SOF) tokens. This enables full-speed USB 2.0 compliance without any external crystal or oscillator, reducing bill-of-materials cost and PCB footprint.

What is the maximum number of 5V-tolerant I/Os on STM32F072C8U7?

The STM32F072C8U7 provides 39 I/O pins, all of which are 5V-tolerant. This is confirmed in Section 3.7 (GPIOs) of DS9826 Rev 6 and Table 14 (pin definitions), where pins PA0–PA15, PB0–PB15, PC13–PC15, and PF0–PF1 are explicitly marked with "FT" (5V-tolerant) functionality.

Can the internal DAC drive standard audio codecs or op-amp circuits directly?

Yes - each of the two 12-bit DAC channels supports buffered voltage output with rail-to-rail swing (0 to VREF+), 1 µA typical output leakage, and 12 µs settling time. It can directly interface with audio codecs requiring 0–3.3 V analog input or op-amps configured for unity-gain buffering, per Section 3.11 and Table 60 in DS9826 Rev 6.

How does the capacitive touch sensing controller (TSC) operate in low-power modes?

The TSC remains active in Stop mode with ~0.9 µA consumption and supports wake-up on touch detection. It uses charge-transfer measurement with built-in acquisition timing control, allowing up to 24 electrodes to be scanned without CPU intervention - verified in Section 3.13 and Table 6 of DS9826 Rev 6.