UPD75P3216 Datasheet, PDF (5/56 Pages) NEC – 4-BIT SINGLE-CHIP MICROCONTROLLER

2. BLOCK DIAGRAM
µPD75P3216
BUZ/P23
TI0/P13
PTO0/P20
WATCH
TIMER
INTW fLCD
BASIC
INTERVAL
TIMER/
WATCHDOG
TIMER
INTBT
8-BIT
TIMER/EVENT
COUNTER #0
INTT0 TOUT
PTO1/P21
TOUT
PTO2/
PCL/P22
INTT1
8-BIT
TIMER CASCADED
COUNTER #1 16-BIT
8-BIT
TIMER
TIMER
COUNTER
COUNTER #2
INTT2
SI/SB1/P03
SO/SB0/P02
SCK/P01
CLOCKED
SERIAL
INTERFACE
INTCSI TOUT
INT0/P10
INT4/P00
INTERRUPT
CONTROL
KR0/P60-
KR3/P63 ⁴
BIT SEQ.
BUFFER (16)
PORT0 4 P00-P03
PROGRAM
COUNTER
SP (8)
CY
ALU
SBS
BANK
GENERAL
REG.
PORT1 2 P10, P13
PORT2 4 P20-P23
PORT3
4
P30/MD0-
P33/MD3
PORT5
4
P50/D4-
P53/D7
PORT6
4
P60/D0-
P63/D3
PROM
PROGRAM
MEMORY
16384 × 8 BITS
DECODE
AND
CONTROL
DATA
MEMORY
(RAM)
512 × 4 BITS
PORT8 4 P80-P83
PORT9 4 P90-P93
4 S12-S15
fx/2 ^N
CPU CLOCK Φ
CLOCK
OUTPUT
CONTROL
CLOCK
DIVIDER
SYSTEM
CLOCK
GENERATOR
STANDBY
CONTROL
4
LCD
CONTROLLER/ ₄
DRIVER
fLCD
4
PCL/PTO2/P22
X1 X2
Vpp VDD VSS RESET
S16/P93-
S19/P90
S20/P83-
S23/P80
COM0-COM3
VLC0
VLC1
VLC2
BIAS
LCDCL/P30
SYNC/P31
5