Hitachi HTD-K160 Service Manual page 30

1 2
CF745 (IC252)
9-11
9-11
EPROM/ROM
STACK 1
512 X 12 To
STACK 2
2048 X 12
PC
E
12
INSTRUCTION
REGISTER
WDT TIME
9
OUT
12
8
INSTRUCTION
D
DECODER
DIRECT ADDRESS
DIRECT RAM
ADDRESS
8
C
STATUS
W
ALU
FROM W
4
B
TRIS 5
TRISA PORTA
A
1 2
3
T0CKI
OSC1 OSC2 MCLR
CONFIGURATION WORD
PIN
DISABLE OSC
SELECT
WATCHDOG
2
TIMER
CODE
PROTECT OSCILLATOR/
CLKOUT
WDT/TMR0
PRESCALER
6
OPTION
OPTION REG.
FROM W
5
5-7
TMR0 FSR
DATA BUS
8
FROM W
FROM W
8
4
8
TRIS 6
TRIS 7
TRISB PORTB
TRISC
4
8
RA<3:0> RB<7:0>
3
4 5
TIMING &
CONTROL
SLEEP
GENERAL
PURPOSE
REGISTER
FILE
(SRAM)
24, 25, 72 or
73 Bytes
8
8
8
PORTC
8
RC<7:0>
(28-Pin
Devices Only)
14
4 5
6 7
6 7
8
8