Datasheet

78K0/Kx2-L CHAPTER 16 SERIAL INTERFACES CSI10 AND CSI11
R01UH0028EJ0400 Rev.4.00 574
Sep 27, 2010
PM0, PM1, PM3, PM4, PM6, and PM12 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets these registers to FFH.
Figure 16-9. Format of Port Mode Register 0 (PM0)
Address: FF20H After reset: FFH R/W
Symbol 7 6 5 4 3 2 1 0
PM0 1 1 1 1 1 PM02 PM01
Note 1
PM00
Note 2
PM0n P1n pin I/O mode selection (n = 0 to 2)
0 Output mode (output buffer on)
1 Input mode (output buffer off)
Notes 1. 32-pin products only
2. 25-pin products only
Remark The figure shown above presents the format of port mode register 1 of the 78K0/KB2-L and
78K0/KA2-L (25, 32-pin products).
Figure 16-10. Format of Port Mode Register 1 (PM1)
Address: FF21H After reset: FFH R/W
Symbol 7 6 5 4 3 2 1 0
PM1 PM17 PM16 PM15 PM14 PM13 PM12 PM11 PM10
PM1n P1n pin I/O mode selection (n = 0 to 7)
0 Output mode (output buffer on)
1 Input mode (output buffer off)
Remark The figure shown above presents the format of port mode register 1 of the 78K0/KB2-L and
78K0/KC2-L.
Figure 16-11. Format of Port Mode Register 3 (PM3)
Address: FF23H After reset: FFH R/W
Symbol 7 6 5 4 3 2 1 0
PM3 PM37 PM36 PM35 PM34 PM33 PM32 PM31 PM30
PM3n P3n pin I/O mode selection (n = 0 to 7)
0 Output mode (output buffer on)
1 Input mode (output buffer off)
Remark The figure shown above presents the format of port mode register 1 of the 78K0/KB2-L and
78K0/KA2-L (25, 32-pin products).
<R>
<R>