4554 Datasheet, PDF (58/138 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4554 Group
Table 17 Key-on wakeup control register, pull-up control register and interrupt control register
Key-on wakeup control register K0
at reset : 00002
at power down : state retained
Port P03 key-on wakeup
K03
control bit
Port P02 key-on wakeup
K02
control bit
Port P01 key-on wakeup
K01
control bit
Port P00 key-on wakeup
K00
control bit
0
Key-on wakeup not used
1
Key-on wakeup used
0
Key-on wakeup not used
1
Key-on wakeup used
0
Key-on wakeup not used
1
Key-on wakeup used
0
Key-on wakeup not used
1
Key-on wakeup used
Key-on wakeup control register K1
Port P13 key-on wakeup
K13
control bit
Port P12 key-on wakeup
K12
control bit
Port P11 key-on wakeup
K11
control bit
Port P10 key-on wakeup
K10
control bit
at reset : 00002
at power down : state retained
0
Key-on wakeup used
1
Key-on wakeup not used
0
Key-on wakeup not used
1
Key-on wakeup used
0
Key-on wakeup not used
1
Key-on wakeup used
0
Key-on wakeup not used
1
Key-on wakeup used
Key-on wakeup control register K2
at reset : 00002
at power down : state retained
INT1 pin
0
K23
return condition selection bit
1
INT1 pin
0
K22
key-on wakeup control bit
1
INT0 pin
0
K21
return condition selection bit
1
INT0 pin
0
K20
key-on wakeup control bit
1
Note: “R” represents read enabled, and “W” represents write enabled.
Return by level
Return by edge
Key-on wakeup not used
Key-on wakeup used
Return by level
Return by edge
Key-on wakeup not used
Key-on wakeup used
R/W
TAK0/
TK0A
R/W
TAK1/
TK1A
R/W
TAK2/
TK2A
Rev.3.00 Aug 06, 2004 page 58 of 136
REJ03B0043-0300Z