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Chapter 2
2.2.4 Configuration of electrical characteristics
(1)
Access
Address
Initial Value
Table 2-13
(2)
Access
Address
Initial Value
Table 2-14
R01UH0129ED0701 Rev. 7.01
User Manual
The registers for the configuration of electrical characteristics are briefly
described in the following. For details refer to the Data Sheet.
PDSCn - Port drive strength control register
The 8-bit PDSCn register selects the output current limiting function for high- or
low-drive strength.
This register can be read/written, in 8-bit and 1-bit units.
see "Port Group Configuration" on page 56
00
. This register is cleared by any reset.
H
7
6
PDSCn7 PDSCn6 PDSCn5 PDSCn4 PDSCn3 PDSCn2 PDSCn1 PDSCn0
R/W
R/W
R/W
PDSCn register contents
Bit position
Bit name
7 to 0
PDSCn[7:0]
For the detailed specification of "Limit 1" and "Limit 2" refer to the Data Sheet.
PICCn - Port input characteristic control register
The 8-bit PICCn register selects between Schmitt Trigger or non-Schmitt
Trigger input characteristics.
This register can be read/written in 8-bit and 1-bit units.
see "Port Group Configuration" on page 56
FF
. This register is cleared by any reset.
H
7
6
PICCn7
PICCn6
PICCn5
R/W
R/W
R/W
PICCn register contents
Bit position
Bit name
7 to 0
PICCn[7:0]
5
4
3
R/W
R/W
Function
Specifies output current limiting function:
0: Limit 1.
1: Limit 2.
5
4
3
PICCn4
PICCn3
R/W
R/W
Function
Specifies Trigger input characteristics:
0: non-Schmitt Trigger
1: Schmitt Trigger
Pin Functions
2
1
0
R/W
R/W
R/W
2
1
0
PICCn2
PICCn1
PICCn0
R/W
R/W
R/W
43
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