W921E400 Просмотр технического описания (PDF) - Winbond

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W921E400

4-BIT MICROCONTROLLER

Winbond 

5. BLOCK DIAGRAM

W921E400A/W921C400

OSCI

OSCO

RESET

VDD

VSS

W Reg. V Reg.

Co-V

Reg.

U Reg.

Co-U

Reg.

Program

Counter

EPROM

4K x 10

Decoder and

Control

Circuit

Stack

Pointer

Oscillator

and

System

Control

Prescaler

B Reg.

A Reg.

ALU

RAM

512 x 4

Port Mode

Register

Timer 0

Timer 2

Timer 3

(ANI0 to ANI3)

MUX

+

-

Port P2

Port P3

Port P4

Port P5

Port P6

Port PA

Port PB

Beep Tone

Generator

DTMF

Generator

D/A Convertor

D/A MSB D/A LSB

P2.0-P2.1

P3.0-P3.3

P4.2-P4.3

P5.1

P6.0-P6.3

PA.0-PA.3

PB.0-PB.3

BTG

DTMF

Publication Release Date: July 1999

-7-

Revision A3

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