STMicroelectronics STR750FV2T7

Overview

STR750FV2T7 from STMicroelectronics is a 32-bit ARM7TDMI-S™ microcontroller with 256 KB Flash (Bank 0), 16 KB RWW Flash (Bank 1), 16 KB SRAM, integrated CAN 2.0B, USB Full-Speed (12 Mb/s), three UARTs, two SSPs, I²C, six timers including motor-control PWM with dead-time generation, and a 10-bit ADC with 11 input channels - deployed in industrial motor drives, programmable logic controllers, and UPS systems.

For engineers reviewing the STR750FV2T7 datasheet, STR750FV2T7 pinout, STR750FV2T7 application, or STR750FV2T7 equivalent, this MCU delivers deterministic real-time control with dual-voltage operation (3.3 V ±10% or 5 V ±10%), nested interrupt handling (32 vectors, 16 IRQ priorities), DMA-accelerated peripherals (UART0, SSP0, PWM, TIM0, ADC), and boot flexibility across internal Flash, external serial Flash via SMI, SRAM, or UART bootloader.

Technical Context

The STR750FV2T7 implements an ARM7TDMI-S core running at up to 60 MHz (54 DMIPS), with on-chip voltage regulators supporting single-supply 3.3 V or 5 V operation and smart low-power modes (SLOW, WFI, STOP, STANDBY) backed by RTC and backup registers. Its clock system includes internal RC oscillators (5 MHz startup, 300 kHz low-power), PLL-based AHB/APB scaling, and dedicated 48 MHz USB clock generation.

Peripheral integration centers on deterministic timing: three synchronizable 16-bit standard timers (TIM2:0) with input capture/output compare, a dedicated 16-bit 6-channel motor-control PWM timer with edge/center-aligned waveforms and emergency stop, and CAN 2.0B with 32-message object RAM buffer - all coordinated via Timer Link and serviced by a 4-channel DMA controller with circular buffer support.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), 38 general-purpose I/O pins, 3 power domains (VDD/VSS, VDDA/VSSA, V18_BKP), and dedicated pins for CANH/CANL, USB_DP/USB_DM, crystal (XT1/XT2), reset (NRST), and boot configuration (BOOT0/BOOT1).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit ARM-based microcontroller applications.

Compared with STM32F103C8T6 and STR712FR2T6, the STR750FV2T7 uniquely integrates CAN 2.0B and USB Full-Speed on a single LQFP64 package with RWW Flash and SMI boot - enabling field-upgradable firmware and compact serial Flash-based storage without external memory controllers.

Availability

STR750FV2T7 is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, and uninterruptible power supplies requiring stable component supply, long-term lifecycle support, and qualified automotive-grade (-40°C to +105°C) operation.

Supply support for STR750FV2T7 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, sensors, and analog components for industrial, automotive, and consumer markets.

The STR750 family targets industrial real-time control applications demanding deterministic timing, dual-voltage I/O, and integrated fieldbus (CAN) plus connectivity (USB), with emphasis on motor control, energy management, and ruggedized embedded systems.

FAQ

Does STR750FV2T7 support simultaneous CAN and USB operation?

Yes, STR750FV2T7 supports concurrent CAN and USB operation in its LQFP64 package. Unlike earlier STR750 variants with shared pin resources, the FV2 revision allocates dedicated pins for CANH/CANL and USB_DP/USB_DM, enabling full-duplex CAN 2.0B communication and USB Full-Speed device functionality without multiplexing conflicts.

What is the maximum operating frequency when powered by 5 V?

When supplied with 5 V ±10%, the STR750FV2T7 operates at up to 60 MHz on the AHB bus. However, USB functionality is disabled under 5 V supply per datasheet specification; the 48 MHz USB clock cannot be generated, and USB_DP/USB_DM pins must remain unused or configured as GPIOs.

How does the Read-While-Write Flash bank function in firmware updates?

The 16 KB RWW Flash Bank 1 allows application code executing from Bank 0 to erase and reprogram Bank 1 without halting CPU operation. This enables safe over-the-air or field firmware updates where critical runtime code remains active while configuration parameters or calibration data are rewritten in background.

Can the STR750FV2T7 boot directly from external serial Flash?

Yes, STR750FV2T7 supports booting directly from external serial Flash via its Serial Memory Interface (SMI). With BOOT0=1 and BOOT1=0, the device initializes SMI, maps up to 64 MB of external Flash into address space, and executes code from it - eliminating need for external parallel memory or secondary bootloaders.