455A Datasheet, PDF (11/148 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

455A Group
LCD power supply
LCD control signal
Key-on wakeup
input
(Note 3)
C1j
K00
Edge detection
circuit
(Note 3)
IAP0
instruction
Register A
Aj
LCD power
supply
FR00
Aj
D
OP0A T Q
instruction
0 1 ^{C1j (Note 3)}
(Note 1)
P00/SEG16,
P01/SEG17
(Note 2)
(Note 1)
Pull-up
transistor
PU00
LCD power supply
LCD control signal
Key-on wakeup
input
(Note 4)
C1k
K01
Edge detection
circuit
(Note 4)
IAP0
instruction
Register A
Ak
LCD power
supply
FR01
Ak
D
OP0A T Q
instruction
0 1 ^{C1k (Note 4)}
Note1
P02/SEG18,
P03/SEG19
Note1 _Note2
Pull-up
transistor
PU01
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 5. Port block diagram (3)
Rev.1.01 Feb 15, 2008 Page 11 of 146
REJ03B0224-0101