Overview
The STM32H742ZIT6 is a high-performance microcontroller from STMicroelectronics, part of the STM32H742xI/G and STM32H743xI/G series. It is based on the 32-bit Arm® Cortex®-M7 core, operating at up to 480 MHz and featuring a double-precision floating-point unit (FPU) and DSP instructions. This microcontroller is designed for applications requiring high computational power, advanced security features, and a wide range of peripherals.
The device includes up to 2 Mbytes of flash memory with read-while-write support and up to 1 Mbyte of RAM, along with extensive I/Os and peripherals connected to various bus matrices. It also supports multiple power domains, low-power modes, and advanced communication interfaces.
Key Specifications
| Specification | Details |
|---|---|
| Core | 32-bit Arm® Cortex®-M7 core with double-precision FPU and L1 cache; frequency up to 480 MHz |
| Memories | Up to 2 Mbytes of flash memory, up to 1 Mbyte of RAM (including 192 Kbytes of TCM RAM and 864 Kbytes of user SRAM) |
| Memory Interface | Dual mode Quad-SPI memory interface up to 133 MHz, flexible external memory controller |
| Power Supply | 1.62 to 3.6 V application supply and I/Os, dedicated USB power, embedded regulator (LDO) |
| Power Domains | 3 separate power domains (D1, D2, D3) which can be independently clock-gated or switched off |
| Low-Power Modes | Sleep, Stop, Standby, and VBAT modes supporting battery charging |
| Communication Peripherals | Up to 35 communication peripherals including I2Cs, USARTs, SPIs, SAIs, CAN controllers, USB OTG, and Ethernet MAC |
| Analog Peripherals | 3 ADCs, 2 DACs, 2 ultra-low power comparators, 2 operational amplifiers, and a temperature sensor |
| Timers and Watchdogs | Up to 22 timers and watchdogs including high-resolution timer, general-purpose timers, and advanced motor control timers |
| Debug and Security | SWD & JTAG interfaces, 4-Kbyte embedded trace buffer, true random number generators, and security features like ROP, PC-ROP, and active tamper |
Key Features
- High-performance 32-bit Arm® Cortex®-M7 core with DSP instructions and double-precision FPU
- Up to 2 Mbytes of flash memory and up to 1 Mbyte of RAM with various memory configurations
- Dual mode Quad-SPI memory interface and flexible external memory controller
- Advanced security features including ROP, PC-ROP, and active tamper
- Multiple power domains and low-power modes for efficient power management
- Extensive range of communication peripherals and analog interfaces
- High-resolution timer, general-purpose timers, and advanced motor control timers
- Graphics capabilities including LCD-TFT controller and Chrom-ART graphical hardware accelerator
- Debug interfaces such as SWD & JTAG and a 4-Kbyte embedded trace buffer
Applications
- Industrial automation and control systems
- Medical devices requiring high computational power and advanced peripherals
- Aerospace and defense applications needing robust security features
- Automotive systems, including advanced driver-assistance systems (ADAS)
- IoT devices and smart home applications requiring low power consumption and multiple interfaces
- Consumer electronics such as high-end audio and video equipment
Q & A
- What is the core architecture of the STM32H742ZIT6?
The STM32H742ZIT6 is based on the 32-bit Arm® Cortex®-M7 core with a double-precision floating-point unit (FPU) and DSP instructions.
- How much flash memory and RAM does the STM32H742ZIT6 have?
The device has up to 2 Mbytes of flash memory and up to 1 Mbyte of RAM, including 192 Kbytes of TCM RAM and 864 Kbytes of user SRAM.
- What are the power supply and voltage ranges for the STM32H742ZIT6?
The device operates with a 1.62 to 3.6 V application supply and I/Os, and includes an embedded regulator (LDO) and dedicated USB power.
- What are the low-power modes supported by the STM32H742ZIT6?
The device supports Sleep, Stop, Standby, and VBAT modes, including battery charging capability.
- What communication peripherals are available on the STM32H742ZIT6?
The device includes up to 35 communication peripherals such as I2Cs, USARTs, SPIs, SAIs, CAN controllers, USB OTG, and Ethernet MAC.
- What analog peripherals are included in the STM32H742ZIT6?
The device features 3 ADCs, 2 DACs, 2 ultra-low power comparators, 2 operational amplifiers, and a temperature sensor.
- What are the timer and watchdog capabilities of the STM32H742ZIT6?
The device includes up to 22 timers and watchdogs, including a high-resolution timer, general-purpose timers, and advanced motor control timers.
- What debug and security features are available on the STM32H742ZIT6?
The device includes SWD & JTAG interfaces, a 4-Kbyte embedded trace buffer, true random number generators, and security features like ROP, PC-ROP, and active tamper.
- What are some typical applications for the STM32H742ZIT6?
Typical applications include industrial automation, medical devices, aerospace and defense, automotive systems, IoT devices, and consumer electronics.
- How does the STM32H742ZIT6 manage power consumption?
The device has multiple power domains (D1, D2, D3) that can be independently clock-gated or switched off, and it supports low-power modes such as Sleep, Stop, and Standby.
- What is the maximum frequency of the internal oscillators in the STM32H742ZIT6?
The internal oscillators include a 64 MHz HSI, 48 MHz HSI48, 4 MHz CSI, and 32 kHz LSI.
