32C datasheet(5/55 Pages) RENESAS

5 / 55 page

R8C/32C Group

1. Overview

R01DS0009EJ0100 Rev 1.00

Page 5 of 52

Aug. 24, 2010

1.3

Block Diagram

Figure 1.2 shows a Block Diagram.

Figure 1.2

Block Diagram

R8C CPU core

System clock generation

circuit

XIN-XOUT

High-speed on-chip oscillator

Low-speed on-chip oscillator

XCIN-XCOUT

Memory

ROM

(1)

RAM

(2)

Multiplier

R0H

R0L

R1H

R1L

USP

ISP

INTB

FLG

I/O ports

Notes:

1. ROM size varies with MCU type.

2. RAM size varies with MCU type.

Port P1

Port P3

Port P4

Timers

Timer RA (8 bits

× 1)

Timer RB (8 bits

× 1)

Timer RC (16 bits

× 1)

Timer RE (8 bits

× 1)

UART or

clock synchronous serial I/O

(8 bits

× 2)

2C bus or SSU

(8 bits

× 1)

Peripheral functions

Watchdog timer

(14 bits)

A/D converter

(10 bits

× 4 channels)

LIN module

Comparator B

Voltage detection circuit

DTC

Low-speed on-chip oscillator

for watchdog timer

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