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R5H30211

Renesas Microcomputer

Renesas Electronics 

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.

Table 1 lists the features of this LSI.

Table 1 Features

CPU

Item

I/O ports

Specification

H8/300H CPU

Upper compatible with the H8/300 CPU in the object level

Sixteen 16-bit registers (Sixteen 8-bit registers + eight 16-bit registers or Eight 32-bit registers)

• High-speed operation

 Maximum clock rate: internal clock 10 MHz

 Add/subtract: 0.20 µs (10 MHz)

 Multiply/divide: 1.40 µs (10 MHz)

• Streamlined, concise instruction set

 16-bit variable instruction length: 2 to 10 bytes

 arithmetic and logic operations between registers

 MOV instruction for data transfer between registers and memory

• Maximum 16-Mbyte address space

• Instruction set features

 8-, 16-, or 32-bit transfer or arithmetic instructions

 Unsigned or signed multiply instruction (8 bits × 8 bits and 16 bits × 16 bits)

 Unsigned or signed divide instruction (16 bits ÷ 8 bits and 32 bits ÷ 16 bits)

 Bit-accumulator instructions

• Register-indirect specification of bit positions

 EEPROM write instruction (EEPMOV.B instruction)

 High-speed block transfer instruction (EEPMOV.W instruction)

• Four general-purpose input/output ports (Also used for interrupts)

Note: When writing to the DDR7 to DDR4 bits, use the MOV instruction instead of the bit

manipulation instruction.

REJ03B0259-0110 Rev.1.10 Jun. 05, 2009

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