HARDWARE
PIN DESCRIPTION
PORT BLOCK DIAGRAMS (continued)
TC1A instruction Register C1
CR flag
STCR instruction S Q
SPCR instruction R
Carrier wave
output circuit
W31
To timer 1
CARRY
(Note)
CARR
Timer LC underflow signal
F/F
W30
Timer 1 underflow signal
C20
F/F
W20
LCD power supply
LCD control signal
Pch
SEG0–SEG15
LCD control signal
Nch
LCD power supply
LCD power supply
LCD control signal
Pch
Pch
LCD control signal
LCD power supply
LCD power supply
LCD control signal
Nch
COM0–COM3
LCD control signal
Nch
Note:
This symbol represents a parasitic diode.
4551 Group User’s Manual
1-9