Datasheet

78K0/Kx2-L CHAPTER 4 PORT FUNCTIONS
R01UH0028EJ0400 Rev.4.00 168
Sep 27, 2010
Figure 4-31. Format of Port Mode Register (78K0/KA2-L (20-pin products))
7
1
Symbol
PM0
6
1
5
1
4
1
3
1
2
1
1
PM01
0
PM00
Address
FF20H
After reset
FFH
R/W
R/W
1
PM2
1 PM25
Note
PM24
Note
PM23
Note
PM22
Note
PM21
Note
PM20
Note
FF22H FFH R/W
1
PM3
1 1 1 1 PM32 PM31 PM30
FF23H FFH R/W
1
PM6
1 1 1 1 1 PM61 PM60
FF26H FFH R/W
PMmn
Pmn pin I/O mode selection
(m = 0, 2, 3, 6; n = 0 to 5)
0 Output mode (output buffer on)
1 Input mode (output buffer off)
Note If this pin is set as an analog input by using the ADPC0 register, be sure to set it to input mode.
Caution Be sure to set bits 2 to 7 of PM0, bits 6, 7 of PM2, bits 3 to 7 of PM3, bits 2 to 7 of PM6 to 1.