STMicroelectronics STM32F091VCT7TR

Overview

STM32F091VCT7TR from STMicroelectronics is a 32-bit ARM Cortex-M0 microcontroller in LQFP100 package, featuring 256 KB Flash, 32 KB SRAM with hardware parity, integrated CAN 2.0B interface, dual 12-bit DAC channels, and 12-bit ADC with 16 inputs - deployed in industrial motor control, smart sensor hubs, and CAN-based building automation systems.

For engineers reviewing the STM32F091VCT7TR datasheet, STM32F091VCT7TR pinout, STM32F091VCT7TR application, or STM32F091VCT7TR equivalent, key selection criteria include CAN timing compliance, 5V-tolerant I/O count (69 pins), RTC+backup register retention under VBAT, SWD debug support, and 48 MHz max CPU frequency with internal 48 MHz oscillator trimming.

Technical Context

This MCU integrates an ARM Cortex-M0 core with tightly coupled peripherals including two I²C interfaces (one supporting Fast Mode Plus at 1 Mbit/s), eight USARTs (three with ISO7816/LIN/IrDA), two SPI/I²S modules, and a dedicated HDMI-CEC receiver for low-power wake-up. Its clock system combines external 4–32 MHz crystal, 32 kHz RTC oscillator, and three internal RC oscillators - including a factory-trimmed 48 MHz HSI48 used for USB-free high-speed operation.

The analog subsystem includes one 12-bit ADC (1.0 µs conversion, 0–3.6 V range), two 12-bit DACs (with output buffers), two fast comparators with programmable hysteresis, and up to 24 capacitive sensing channels. Power management supports Sleep/Stop/Standby modes with VBAT-backed RTC and registers, plus a programmable voltage detector (PVD) for supply monitoring.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch), RoHS-compliant ECOPACK®2 package with exposed thermal pad - optimized for industrial PCB assembly and thermal dissipation in enclosed enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F091VCT7TR, STM32F072VBT6 trades CAN and memory for lower cost and USB, while STM32F098VCT6 adds USB at the expense of increased design overhead - making the VCT7TR optimal for CAN-centric embedded control where USB is absent.

Availability

STM32F091VCT7TR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor hubs, and building automation systems requiring stable component supply, long-term lifecycle assurance, and full production traceability.

Supply support for STM32F091VCT7TR 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F0 series targets cost-sensitive, resource-constrained embedded applications requiring high integration, low power, and industrial-grade reliability - with the F091 line specifically optimized for CAN-enabled control nodes.

FAQ

What is the maximum operating temperature range for STM32F091VCT7TR?

The STM32F091VCT7TR is rated for industrial temperature range: –40 °C to +85 °C. This is confirmed in Section 6.3.1 (General Operating Conditions) of the official datasheet (DocID026284 Rev 4), with thermal derating applied above 70 °C for sustained 48 MHz operation.

Does STM32F091VCT7TR support hardware CRC calculation?

Yes - it includes a dedicated cyclic redundancy check (CRC) calculation unit compliant with IEEE 802.3, accessible via memory-mapped registers. This accelerates firmware integrity checks and communication frame validation without CPU overhead, as specified in Section 3.4 of the datasheet.

Can the internal 48 MHz oscillator be used as the system clock source?

Yes - the HSI48 oscillator is fully qualified as a system clock source, with automatic trimming based on external synchronization (e.g., USB SOF or LSE). It eliminates need for external crystal in non-USB applications and is documented in Section 3.6 and Table 43 of the datasheet.

Is the STM32F091VCT7TR pin-compatible with other STM32F091xC variants?

Yes - all STM32F091xC devices in LQFP100 package (e.g., STM32F091RCT6, STM32F091VCT6) share identical pinout and footprint. Differences are limited to Flash size (256 KB vs. 128 KB) and minor feature enablement - verified in Table 1 and Section 4 (Pinouts and Pin Descriptions).