Renesas SH72544R SuperH RISC Microcontroller

The SH72544R 32-bit microcontroller (MCU), from Renesas, is a new member of the 32-bit SuperH RISC family. The SH72544R MCU is ideal for advanced electronic controls for car and truck engines and transmissions that boost efficiency, decrease emissions, and improve performance. Operating at speeds up to 200MHz, the MCU achieves the 400-MIPS performance and the high reliability essential for next-generation automotive applications and has 2.5Mbytes of on-chip flash memory for storing highly precise real-time control algorithms. It is available as a packaged device (272-pin P-BGA) specified for operation at 125°C. The SH72544R microcontroller is priced at $93.

The peripheral functions built into the new MCU meet the specific requirements of advanced engine and transmission control systems. In addition to a multifunction timer (ATU-III: Advanced Timer Unit III), the SH72544R provides a fast multichannel 12-bit A/D converter, CAN interface, high-speed serial interface functions, multi-input signature generator, and more. The high level of integration saves cost and allows compact controls that fit into tight spaces in engine compartments, transmission cases, etc.

The SH-2A superscalar 32-bit RISC CPU core of the SH72544R has the computing power needed to execute very fine-grained, high-level, real-time control of engine/transmission systems. Despite providing the large 2.5Mbyte on-chip flash memory made possible by fabrication in a 90nm process, the power-efficient MCU consumes less than 900mW, even when operating at 200MHz in +125°C environment. Its flash capacity is 2.5 times that of the popular SH7058, sufficient for storing the larger application programs required to obtain performance improvements. For data storage, the new MCU provides 128Kbytes of flash memory with functions and endurance essentially equivalent to those of EEPROM. This eliminates the need for external EEPROM and thus reduces system costs.

Although flash memory generally has a slower maximum operating speed than digital logic circuits due to its operating principle, Renesas has applied unique technologies to increase the speed of the flash built into the SH72544R chip. In addition, the MCU incorporates a low-power cache system that optimizes the use of flash memory. The overall result is flash memory performance that is essentially equal to single-cycle access at 200MHz.

More info: Renesas Technology