H838532H datasheet(24/508 Pages) RENESAS

24 / 508 page

Section 1 Overview

Rev. 1.00 May 30, 2008 Page 4 of 484

REJ09B0436-0100

Classification

Module/

Function

Description

Timer G

• 8-bit timer

• Four counter input clocks are selectable

• Input capture functions supported (a built-in noise canceller)

• Level detection at counter overflow is possible

• Counter clearing option

• Two interrupt sources: Input capture and overflow

Timer

Asynchron-

ous event

counter

(AEC)

• 16-bit pulse timer (also can be used as 8 bits × two channels)

• Can count asynchronously-input external events

Watchdog timer Watchdog

timer (WDT)

8 bits

× one channel (selectable from two counter input clocks)

Serial interface

Serial

communi-

cation

interface 3

(SCI3)

• Two serial communication interfaces, SCI3-1 and SCI3-2, that

have identical functions

• For both asynchronous and clock synchronous serial

communications

• Full-duplex communications capability

• Select the desired bit rate

• Six interrupt sources

I/O ports

• Nine CMOS input-only pins

• 55 CMOS input/output pins

• 32 pull-up resistors

LCD (Liquid

Crystal Display)

drive

LCD

controller/

driver

• A maximum of 32 segment pins and four common pins

• Choice of four duty cycles (static, 1/2, 1/3, or 1/4)

• LCD RAM capacity: 8 bits × 32 bytes (256 bits)

• Word access to LCD RAM

• All eight segment output pins can be used individually as port

pins

• Common output pins not used because of the duty cycle can be

used for common double-buffering (parallel connection)

• Display possible in operating modes other than standby mode

• Choice of 11 frame frequencies

• Built-in power supply split-resistance, supplying LCD drive

power

• A or B waveform selectable by software

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