Product Details Supplier Info More products

Renesas Technology Europe has announced the SH72531, a 32-bit MCU designed for powertrain control of automobile engines and transmissions.

The device features a high-speed operation of up to 120MHz and 1.25Mbytes of on-chip high-speed Flash memory.

The SH72531 is built around the SH-2A 32-bit CPU core and uses a 90nm process node.

It achieves a processing performance of 240 million instructions per second (MIPS) when operating at 120MHz, which enables real-time control of engine or transmission systems.

It supports 120MHz operation at temperatures up to 125C, something that is difficult to achieve in a Flash MCU while power consumption is 350mW or less.

Typically, due to method of operation, Flash memories have a lower maximum operating speed than the logic block.

Nevertheless, the SH72531 incorporates Flash memory design technology exclusive to Renesas Technology to achieve a Flash memory operation speed of 100MHz.

In addition, a low-power cache circuit optimised for the Flash memory reduces power consumption when data from the on-chip Flash memory is used for processing and delivers performance roughly equivalent to single-cycle access at an operating speed of 120MHz.

Furthermore, 32Kbytes of on-chip flash memory is allocated for data storage and can be overwritten while the MCU is operating.

It provides roughly the same functionality as electrically erasable and programmable read only memory (EEPROM).

This eliminates the need for external memory to store data.

The SH72531 fits into a compact 176-pin LQFP package, in contrast to the 272-pin P-BGA of its predecessor, the SH72544R.

In spite of its low pin count, the SH72531 integrates key functions and interfaces needed for engine and transmission control applications.

These include the Advanced Timer Unit III (ATU-III) multifunction timer unit, a high-speed 12-bit A/D converter, a CAN1 interface, and a high-speed serial interface.

Built around the same SH-2A CPU core as the earlier SH72544R, it provides a subset of the peripheral functions of the SH72544R.

This means that software developed for the SH72544R can be reused when developing systems incorporating the SH72531, reducing the development time required.

The E10A-USB on-chip debugging emulator is available as a development tool.

It runs off USB bus power and requires no external power supply.

Renesas Technology

View full profile