HD6433937 Datasheet, PDF (172/521 Pages) Hitachi Semiconductor – Hardware Manual

4. Port mode register 5 (PMR5)
Bit
Initial value
Read/Write
7
WKP₇
0
R/W
6
WKP₆
0
R/W
5
WKP₅
0
R/W
4
WKP₄
0
R/W
3
WKP₃
0
R/W
2
WKP₂
0
R/W
1
WKP₁
0
R/W
0
WKP₀
0
R/W
PMR5 is an 8-bit read/write register, controlling the selection of pin functions for port 5 pins.
Upon reset, PMR5 is initialized to H'00.
Bit n: P5_n/WKP_n pin function switch (WKP_n)
These bits select whether the pin is used as P5_n or WKP_n.
Bit n
WKPn
0
1
Description
Functions as P5_n I/O pin
Functions as WKP_n input pin
(initial value)
(n = 7 to 0)
8.6.3 Pin Functions
Table 8-15 shows the port 5 pin functions.
Table 8-15 Port 5 Pin Functions
Pin
P5₇/WKP₇ to
P5₀/WKP₀
Pin Functions and Selection Method
The pin function depends on bit WKP_n in PMR5 and bit PCR5_n in PCR5.
(n = 7 to 0)
WKP_n
PCR5_n
Pin function
0
0
1
P5_n input pin P5_n output pin
1
*
WKP_n
input pin
*: Don’t care
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