STM32H725ZGT3

Product Overview

The STM32H725ZGT3 is a high-performance 32-bit microcontroller from STMicroelectronics' STM32H7 series, based on the Arm Cortex-M7 processor operating at up to 550 MHz. It integrates 1 MB of Flash memory, 564 KB of RAM, advanced graphics acceleration, high-speed communication interfaces, and extensive analog and timer peripherals.

Designed for demanding embedded applications, the STM32H725ZGT3 combines processing performance, real-time control capabilities, and flexible external-memory support. Its LQFP-144 package and extended industrial temperature rating make it suitable for industrial automation, communication equipment, motor control, and advanced human-machine interfaces.

Key Features

• 32-bit Arm Cortex-M7 processor with double- and single-precision FPU

• CPU frequency up to 550 MHz

• 32 KB instruction cache and 32 KB data cache

• 1 MB embedded Flash memory with ECC

• 564 KB RAM, including backup SRAM

• Memory Protection Unit (MPU)

• Chrom-ART graphics accelerator

• LCD-TFT display controller supporting up to XGA resolution

• Flexible external memory controller

• Two Octo-SPI interfaces with execute-in-place support

• USB 2.0 High-Speed/Full-Speed controller

• Ethernet MAC with DMA

• Three CAN-family interfaces, including two FDCAN interfaces

• Multiple USART, UART, I²C, SPI, and SAI interfaces

• High-resolution ADCs and dual 12-bit DACs

• CORDIC and FMAC hardware accelerators

• Multiple DMA controllers

• Hardware random number generator and CRC unit

• Operating temperature range of -40°C to +125°C

Technical Specifications

Processor & Architecture

The STM32H725ZGT3 integrates an Arm Cortex-M7 core with a maximum frequency of 550 MHz. Its floating-point unit supports single- and double-precision calculations, while DSP instructions accelerate signal processing and numerical workloads.

The processor includes a 32 KB instruction cache and a 32 KB data cache to improve execution performance. An integrated MPU helps manage memory access, and the internal bus architecture supports high-speed transfers between memory, peripherals, and external devices.

Memory & Storage

The STM32H725ZGT3 provides substantial memory resources for complex embedded applications.

• 1 MB embedded Flash memory with error correction

• 564 KB total RAM, including system RAM, TCM RAM, and backup SRAM

• Flexible external memory controller supporting compatible SRAM, PSRAM, SDRAM, NOR, and NAND memories

• Two Octo-SPI interfaces with execute-in-place support

• Two SD/SDIO/MMC interfaces

• ECC support for improved memory reliability

These resources support applications requiring substantial firmware, runtime buffers, external data storage, and real-time processing.

Analog Peripherals

The device integrates multiple analog resources for measurement, feedback control, and signal acquisition.

• Two 16-bit ADCs, supporting up to 3.6 MSPS in 16-bit mode

• Up to 22 channels across the 16-bit ADC resources

• One 12-bit ADC with conversion rates up to 5 MSPS

• Two 12-bit DACs

• Two operational amplifiers

• Two ultra-low-power comparators

• Digital filters for external sigma-delta modulators

Actual channel availability depends on package pin assignments and peripheral configuration.

Timer & PWM Resources

The STM32H725ZGT3 includes a comprehensive timer subsystem for motor control, industrial automation, and precision timing.

• Multiple 16-bit general-purpose timers

• Four 32-bit timers

• Five low-power timers

• PWM generation and input capture

• Output compare and pulse measurement

• Quadrature encoder input support on applicable timers

• Independent watchdog and window watchdog

• SysTick timer

• Real-time clock with calendar functionality

The timer resources support motor-control loops, synchronization, pulse generation, and real-time event management.

Communication & Connectivity

The STM32H725ZGT3 integrates high-speed communication interfaces for industrial and connected embedded systems.

• USB 2.0 High-Speed/Full-Speed device, host, and OTG controller

• On-chip USB Full-Speed PHY and ULPI interface for an external High-Speed PHY

• Ethernet MAC with DMA controller

• One FD/TT-CAN and two FD-CAN interfaces

• Multiple I²C interfaces with Fast-mode Plus support

• Multiple USART and UART interfaces

• SPI interfaces, including multiplexed I²S functionality

• Two SAI serial audio interfaces

• Two SD/SDIO/MMC interfaces

• Digital camera interface

• SPDIF input

• HDMI-CEC

• SWPMI single-wire protocol master interface

• MDIO slave interface

The final interface configuration depends on pin multiplexing and the selected peripheral functions.

Clock & Power Management

The STM32H725ZGT3 supports flexible clock configuration and integrated power management.

• Internal 64 MHz high-speed oscillator

• Internal 48 MHz oscillator for applicable peripherals

• Internal low-speed oscillator

• External high-speed crystal or clock input

• External 32.768 kHz low-speed crystal support

• Embedded DC-DC converter and LDO regulator

• Power-on reset, power-down reset, programmable voltage detector, and brownout reset

• Application supply range of 1.62–3.6 V

These features allow system designers to balance processing performance, peripheral timing, and power consumption.

Low-Power Operation

Although designed for high performance, the STM32H725ZGT3 provides several low-power modes for applications that alternate between active processing and idle periods.

• Sleep mode

• Stop mode

• Standby mode

• Backup-domain power support

• VBAT supply for the RTC and backup registers

• Flexible clock and peripheral management

Power consumption depends on clock configuration, active peripherals, memory usage, and operating conditions.

Power Management

The device integrates power-control features for reliable operation across a wide supply range.

• Embedded DC-DC conversion and LDO regulation

• Power-on and power-down reset

• Programmable voltage detection

• Brownout reset

• Dedicated USB power support

• Backup supply for RTC and backup registers

For power-supply design, review the datasheet's recommended supply connections, decoupling requirements, current consumption tables, and startup conditions.

Security & Data Integrity

The STM32H725ZGT3 provides hardware resources that help improve firmware integrity and application reliability.

• Memory Protection Unit

• Flash and RAM error correction support

• Readout protection

• Proprietary code readout protection

• Tamper-detection features

• True random number generator

• CRC calculation unit

• 96-bit unique device identification

These features support embedded firmware protection, memory reliability, and device identification. They should not be interpreted as a substitute for application-level security design.

Development & Debugging

The STM32H725ZGT3 is supported by STMicroelectronics' STM32 development ecosystem.

• Serial Wire Debug (SWD)

• JTAG debugging

• Embedded trace buffer

• STM32CubeMX configuration tools

• STM32CubeIDE development environment

• STM32CubeProgrammer programming utility

• Supported STM32 firmware libraries and middleware

These tools help engineers configure peripherals, develop firmware, debug applications, and validate embedded designs.

Applications

The STM32H725ZGT3 is suitable for demanding embedded applications, including:

• Industrial automation and control

• Motor drives and servo systems

• Human-machine interfaces (HMI)

• Industrial networking

• Ethernet-connected controllers

• USB-connected equipment

• Graphics-enabled embedded systems

• Measurement and instrumentation

• Audio processing and digital signal processing

• Robotics and machine control

• Data acquisition systems

• Communication gateways

• Smart appliances and advanced embedded equipment

Benefits

• High processing performance: 550 MHz Cortex-M7 core with FPU and DSP instructions.

• Substantial memory capacity: 1 MB Flash and 564 KB RAM.

• Graphics support: Integrated graphics accelerator and LCD-TFT controller.

• Extensive connectivity: Ethernet, USB, CAN, serial interfaces, and external-memory support.

• Real-time control: Rich timer and PWM resources for industrial applications.

• Analog integration: ADCs, DACs, operational amplifiers, and comparators.

• Industrial temperature capability: Extended operating range from -40°C to +125°C.

• Established development ecosystem: STM32 development tools and software support.

Packaging & Ordering Information

• Part Number: STM32H725ZGT3

• Manufacturer: STMicroelectronics

• Device Family: STM32H7 High-Performance Microcontrollers

• Package: LQFP-144

• Package Code: LQFP144

• Package Size: 20 × 20 × 1.4 mm

• Packing Type: Tray

• Supply Voltage: 1.62–3.6 V

• Operating Temperature: -40°C to +125°C

• Product Status: Active, in volume production

• Grade: Industrial

• RoHS: ECOPACK2 compliant

Datasheet

For complete electrical characteristics, pin configuration, memory architecture, ADC specifications, timer configuration, communication interfaces, absolute maximum ratings, and application information, please refer to the official STMicroelectronics documentation.

Datasheet: Official STM32H725ZGT3 Datasheet

Frequently Asked Questions

What is the maximum operating frequency of the STM32H725ZGT3?

The Arm Cortex-M7 processor operates at up to 550 MHz.

How much Flash memory and RAM does the STM32H725ZGT3 have?

It provides 1 MB of Flash memory and 564 KB of RAM.

What package does the STM32H725ZGT3 use?

It uses an LQFP-144 package measuring 20 × 20 × 1.4 mm.

What is the operating temperature range?

The STM32H725ZGT3 supports an extended industrial operating temperature range of -40°C to +125°C.

Does the STM32H725ZGT3 support Ethernet and USB?

Yes. It includes an Ethernet MAC with DMA and a USB 2.0 High-Speed/Full-Speed controller. High-Speed USB operation requires a compatible external PHY.

What is the difference between STM32H725ZGT3 and STM32H725ZGT6?

Both part numbers identify the same general device configuration and LQFP-144 package. The T3 variant supports -40°C to +125°C, while the T6 variant is specified for -40°C to +85°C.

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