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R5H30211
Renesas Microcomputer
REJ03B0259-0110 Rev.1.10 Jun. 05, 2009
Overview
This LSI is a single-chip microcontroller unit (MCU) built around the H8/300H CPU. Four I/O ports, ROM, RAM, EEPROM, a random number generator (RNG), a watchdog timer (WDT), a firewall management unit (FMU), interval timers (TMR1/TMR2), I2C bus interface (IIC2), synchronous serial communication unit (SSU), and a coprocessor are included. Operating at a maximum 10-MHz internal clock rate, the H8/300H CPU rapidly executes bit manipulation instructions, arithmetic and logic instructions, and data transfer instructions. The on-chip coprocessor executes modular multiplications (such as ABR-1 modN + kN), which are used to calculate modular exponentiation XY modN, and DES calculation processing at a high speed.