UPD75218 NEC, UPD75218 Datasheet - Page 39

• Manufacturer Part Number: UPD75218
• Description: 4-BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC

11. APPLICATION BLOCK DIAGRAM
11.1 VCR TIMER TUNER
Tape count pulse
Tape up/down
PD75104 or PD75106
System
controller
microcomputer
EEPROM™
PD6252
PD6253
PD6254
Electronic
tuner
SCK
SO
Main power supply
SI
Power
failure
detection
LPF
INT4
PPO
INT1
SCK
SO
X1
Timer
Tuner
Remote-
controller
signal
reception
Tape counter
PD75218
X2
V
DD
XT1
+
V
S0–S15
SS
PORT6
T0–T9
INT0
XT2
BUZ
Super capacitor
10
16
Fluorescent indication panel (FIP)
BZ
16 segments
Piezoelectric buzzer
PC2800A
Key matrix
(16
4)
10 digits
Remote-controller
signal
PD75218
39