4507_M Datasheet, PDF (122/216 Pages) Renesas Technology Corp – 4-BIT CISC SINGLE-CHIP MICROCOMPUTER 4500 SERIES

4507 Group
APPLICATION
2.1 I/O pins
(3) 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 2.1.3 shows the key-on wakeup control register K1.
Table 2.1.3 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.
(4) Pull-up control register PU1
Register PU1 controls the ON/OFF of the ports P10–P13 pull-up transistor.
Set the contents of this register through register A with the TPU1A instruction.
Table 2.1.4 shows the pull-up control register PU1.
Table 2.1.4 Pull-up control register PU1
Pull-up control register PU1
at reset : 00002 at RAM back-up : state retained W
Port P13/INT
PU13
pull-up transistor control bit
Port P12/CNTR
PU12
pull-up transistor control bit
Port P11
PU11
pull-up transistor control bit
Port P10
PU10
pull-up transistor control bit
Note: “W” represents write enabled.
0 Pull-up transistor OFF
1 Pull-up transistor ON
0 Pull-up transistor OFF
1 Pull-up transistor ON
0 Pull-up transistor OFF
1 Pull-up transistor ON
0 Pull-up transistor OFF
1 Pull-up transistor ON
Rev.2.01 Feb 04, 2005
2-7
REJ09B0195-0201