R8800

R

R

16-BIT RISC MICROCONTROLLER

Specifications subject to change without notice, contact your sales representatives for the most update information.

Page 3 of 5

REV 1.0 Oct.26 2006

2.

Block Diagram

DMA

Unit

PSRAM

Control

Unit

Chip

Select

Unit

Refresh

Control

Unit

Bus

Interface

Unit

PIO

Unit

Synchronous

Serial Interface

Timer Control

Unit

Interrupt

Control Unit

Clock and

Power

Management

Asynchro-

nous Serial

Port

Instruction

Queue (64bits)

Instruction

Decoder

Register

File

General,

Segment,

Eflag Register

ALU

(Special,

Logic,

Adder,

BSF)

Micro

ROM

EA / LA

Address

Control Signal

Execution

Unit

X1

X2

CLKOUTA

CLKOUTB

INT4

INT0

TMRIN0

TMROUT0

TMRIN1

TMROUT1

DRQ0

DRQ1

TXD

RXD

SCLK

SDEN0 SDEN1

SDATA

A19~A0

AD15~AD0

ALE

BHE/ADEN

WR

WLB

WHB

RD

VCC

GND

LCS/ONCE0

MCS3/RFSH

UCS/ONCE1

PCS5/A1

PCS6/A2

ARDY

SRDY

S2~S0

DT/R

DEN

HOLD

HLDA

S6/CLKDIV2

UZI

INT3/INTA1/IRQ

INT2/INTA0

INT1/SELECT

NMI

RST

MCS2-MCS0

PCS3-PCS0

PIO31~0