SM8521 datasheet(5/56 Pages) SHARP

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SM8521

PIN NAME

I/O

FUNCTION

D0-D7

I/O

External data bus

A0-A20

External address bus

MCE0B

Chip enable 0 (Mask ROM/flash memory)

MCE1B

Chip enable 1 (SRAM)

IOE0B

I/O enable 0 (address : FF00-FFFF)

IOE1B

I/O enable 1 (address : FF00-FFFF)

RDB

Read strobe

WRB

Write strobe

NMIB

Non-maskable interrupt

INTB

External interrupt

VD0-7

I/O

VRAM data bus

VA0-12

VRAM address bus

VCE0B

VRAM chip enable 0 (A000-BFFF)

VCE1B

VRAM chip enable 1(C000-DFFF)

VRDB

VRAM read strobe

VWRB

VRAM write strobe

P00-P07

I/O

I/O port 0

P10-P17

I/O

I/O port 1

P20-P27

I/O

I/O port 2

P30-P37

I/O

I/O port 3

RxDB

UART data input port

TxDB

UART data output port

SOUND

Sound output

D/A converter reference voltage

LCD drive waveform

Display data latch pulse

Display data clock

XD0-XD3

Diaplay data

Vertical timing

DOFFB

Display off

Main clock input

Main clock output

CLK

System clock output

OSC1

Subclock input

OSC2

Subclock output

RESETB

Reset

M0-M2

Operation Mode (usually GND)

VCC, GND

Power supply

PIN DESCRIPTION

SM8521 Datasheet(PDF) 5 Page - Sharp Corporation

SM8521 Datasheet(HTML) 5 Page - Sharp Corporation

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