BASIC
INTERVAL
TIMER
PORT 0
PORT 1
PORT 2
PORT 3
4
4
4
4
P00-P03
P10-P13
P20-P23
P30-P33
P40-P43
P50-P53
P60-P63
P70-P73
INTBT
PROGRAM
COUNTER *
SP(8)
CY
TIMER/EVENT
COUNTER
#0
ALU
TI0/P13
PTO0/P20
BANK
INTT0
WATCH
TIMER
PORT 4
PORT 5
PORT 6
PORT 7
4
4
4
4
BUZ/P23
PROGRAM
MEMORY
(ROM)
8064×8BITS
: µPD75308B
6016×8BITS
: µPD75306B
4096×8BITS
GENERAL REG.
INTW
LfCD
DECODE
AND
CONTROL
SI/SB1/P03
CLOCKED
SERIAL
INTERFACE
SO/SB0/P02
SCK/P01
DATA
MEMORY
(RAM)
: µPD75304B
512 × 4 BITS
INTCSI
24
8
S0-S23
INT0/P10
INT1/P11
INT2/P12
S24/BP0
–S31/BP7
INTER-
RUPT
µ
CONTROL
INT4/P00
LCD
CONTROL-
LER
4
COM0–COM3
KR0/P60
–KR7/P73
8
f
/ 2N
X
/DRIVER
3
VLC0–VLC2
SYSTEM CLOCK
GENERATOR
CLOCK
OUTPUT
CONTROL
CPU
CLOCK
CLOCK
DIVIDER
STAND BY
CONTROL
BIT SEQ.
BUFFER (16)
f
LCD
BIAS
LCDCL/P30
SYNC/P31
SUB
MAIN
V
DD
VSS
RESET
PCL/P22
XT1 XT2 X1 X2
*
13bits : µPD75306B, 75308B
12bits : µPD75304B
NEC [ NEC ]
