4507_M Datasheet, PDF (158/216 Pages) Renesas Technology Corp – 4-BIT CISC SINGLE-CHIP MICROCOMPUTER 4500 SERIES

4507 Group
APPLICATION
2.6 RAM back-up
2.6.2 Related registers
(1) Key-on wakeup control register K0
Register K0 controls the ON/OFF of the key-on wakeup function of ports P00–P03.
Set the contents of this register through register A with the TK0A instruction.
The contents of register K0 is transferred to register A with the TAK0 instruction.
Table 2.6.4 shows the key-on wakeup control register K0.
Table 2.6.4 Key-on wakeup control register K0
Key-on wakeup control register K0
at reset : 00002 at RAM back-up : state retained
Port P03
K03
key-on wakeup control bit
0 Key-on wakeup invalid
1 Key-on wakeup valid
Port P02
K02
key-on wakeup control bit
0 Key-on wakeup invalid
1 Key-on wakeup valid
Port P01
K01
key-on wakeup control bit
0 Key-on wakeup invalid
1 Key-on wakeup valid
Port P00
K00
key-on wakeup control bit
0 Key-on wakeup invalid
1 Key-on wakeup valid
Note: “R” represents read enabled, and “W” represents write enabled.
(2) Key-on wakeup control register K1
Register K1 controls the ON/OFF of the key-on wakeup function of ports P10–P13.
Set the contents of this register through register A with the TK1A instruction.
The contents of register K1 is transferred to register A with the TAK1 instruction.
Table 2.6.5 shows the key-on wakeup control register K1.
R/W
Table 2.6.5 Key-on wakeup control register K1
Key-on wakeup control register K1
at reset : 00002 at RAM back-up : state retained R/W
Port P13/INT
K13
key-on wakeup control bit
0 P13 key-on wakeup invalid/INT pin key-on wakeup valid
1 P13 key-on wakeup valid/INT pin key-on wakeup invalid
Port P12/CNTR
K12
key-on wakeup control bit
0 Key-on wakeup invalid
1 Key-on wakeup valid
Port P11
K11
key-on wakeup control bit
0 Key-on wakeup invalid
1 Key-on wakeup valid
Port P10
K10
key-on wakeup control bit
0 Key-on wakeup invalid
1 Key-on wakeup valid
Note: “R” represents read enabled, and “W” represents write enabled.
Rev.2.01 Feb 04, 2005
REJ09B0195-0201
2-43