4559 Datasheet, PDF (14/148 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4559 Group
LCD power supply
LCD control signal
Key-on wakeup
input
(Note 5)
K31
0
Edge detection circuit
(Note 5)
K30
0
(Note 3)
(Note 5) ^C3j
K22
1
Edge detection circuit
1
IAP3
(Note 3) instruction
Register A
Aj
LCD power
supply
FR22
Aj
D
OP3A
instruction
T
Q
0 1 ^{C3j (Note 3)}
(Note 1)
P30/SEG28,
P31/SEG29
(Note 2)
(Note 1)
Pull-up
transistor
PU3j
(Note 3)
LCD power supply
LCD control signal
Key-on wakeup
input
(Note 6)
K33
0 _{Edge detection circuit}
(Note 6)
K32
0
(Note 4)
(Note 6) ^C3k
K23
1 ^{Edge detection circuit}
1
(Note 4)
IAP3
instruction
Register A
Ak
LCD power
supply
FR23
Ak
D
OP3A _{T Q}
instruction
0 1 ^{C3k (Note 4)}
(Note 1)
P32/SEG30,
P33/SEG31
(Note 1)(Note ²⁾
Pull-up
transistor
PU3k
(Note 4)
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.
5. For setting key-on wakeup of ports P30 and P31 to be invalid (K22 = “0”)
set registers K30 and K31 to “0.”
6. For setting key-on wakeup of ports P32 and P33 to be invalid (K23 = “0”)
set registers K32 and K33 to “0.”
Fig 8. Port block diagram (6)
Rev.1.04 Aug 23, 2007 Page 14 of 146
REJ03B0188-0104