D75108CW NEC, D75108CW Datasheet - Page 45

• Manufacturer Part Number: D75108CW
• Description: Search -----> UPD75108CW
• Manufacturer: NEC

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10.5
10.6
To main
equipment
PUSHBUTTON TELEPHONE
DISPLAY PAGER
Code ROM
Piezoelectric
buzzer
LED
indicator
Key
matrix
Filter
Data
transmitter
circuit
Data
receiver
circuit
High-
current
output
INT
TO
Hook switch
PD75108
LCD controller/
driver
PD7228/7229
PD75108
TO
Comparator
SIO
input
Filter
SIO
High-
current
output
Transmitter/
receiver/
speaker
selector
Call sound
LCD
controller/
driver
LED indicator
LCD indicator
PD7228G
MPX
RAM
Switch
PD4464
PD75104, 75106, 75108
Communication
circuit
Microphone
amplifier
Speaker
amplifier
Battery
check
Transmitter/
receiver
LCD indicator
Microphone
Speaker
45