455A Group
LCD power supply
LCD control signal
C3j
(Note3)
0
1
(Note1)
P30/SEG28,
P31/SEG29
(Note3)
(Note2)
(Note1)
C3j
LCD power
supply
K22
Edge detection
circuit
Key-on wakeup
input
IAP3
instruction
(Note3)
Register A
Aj
(Note3)
PU2j
FR22
Pull-up transistor
Aj
D
OP3A
T
Q
instruction
LCD power supply
C3k (Note4)
0
1
LCD control signal
(Note1)
P32/SEG30,
P33/SEG31
(Note1)
(Note4)
(Note2)
C3k
LCD power
supply
K23
Edge detection
circuit
Key-on wakeup
input
IAP3
instruction
(Note4)
Register A
Ak
(Note4)
PU2k
FR23
Pull-up transistor
Ak
D
OP3A
instruction
T
Q
Notes 1.
This symbol represents a parasitic diode on the port.
2. Applied potential to these ports must be VDD or less.
3. j represents bits 0, 1.
4. k represents bits 2, 3.
Fig 8. Port block diagram (6)
Rev.1.01 Feb 15, 2008 Page 14 of 146
REJ03B0224-0101