schem

3. Błock Diagram

PO.O - PO.7

P2.0 - P2.7

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GND

PSEN

PORT 0 DRIVERS

PORT 2 DRIVERS

-Z-

RAM ADDR. REGISTER

REGISTER

ACC

RAM

TMP2

PORT 0 LATCH

PORT 2 LATCH

FLASH

STACK

POINTER

PROGRAM

ADDRESS

REGISTER

◄-► BUFFER <-►

TMP1

PC

INCREMENTER

ALU

f		INTERRUPT. SERIAL PORT. AND TIMER BLOCKS
	i		i	i

PSW

PROGRAM

COUNTER

<-

ALE/PROG ◄-EA / V_PP — RST —

TIMING	INSTRUCTION
AND
	REGISTER
L/Ul\ I HUL

i i a

DUAL DPTR

WATCH

DOG

PORT 3 LATCH

PORT 1 LATCH

	ISP			PROGRAM
	PO	RT	^ w	LOGIC

OSC

PORT 3 DRIVERS

PORT 1 DRIVERS

rrrrnTT

P3.0 - P3.7

P1.0 • P1.7

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