NAD C 315BEE Service Manual page 11

All manuals and user guides at all-guides.com
AT89S51/W78E052C
MAIN BOARD : IC501
PORT 0 DRIVERS
RAM ADDR.
RAM
REGISTER
B
ACC
REGISTER
TMP2
ALU
PSW
TIMING AND INSTRUCTION
CONTROL
REGISTER
WATCH
DOG
OSC
PIN CONFIGURATION
P2.0 ------ P2.7
P1.0 ------ P1.7
PORT 2 DRIVERS
PORT 0
PORT 2
LATCH
LATCH
STACK
PIONTER
TMP1
INTERRUPT ,SERIAL PORT
AND TIMER BLOCKS
PORT 3
PORT 1
LATCH
LATCH
PORT 1 DRIVERS
PORT 3 DRIVERS
P3.0 ------ P3.7 P1.0 ------ P1.7
QUICK
FLASH
PROGRAM
ADDRESS
REGISTER
BUFFER
PC
INCREMENTER
PROGRAM
COUNTER
DUAL DPTR
ISP
PROGRAM
LOGIC
PORT