Datasheet

CHAPTER 16 MANCHESTER CODE GENERATOR
User’s Manual U18698EJ1V0UD
430
(d) Port mode register 3 (PM3)
This register sets port 3 input/output in 1-bit units.
When using the P32/TOH0/MCGO pin for bit sequential data output, clear PM32 to 0 and clear the output
latch of P32 to 0.
PM3 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets these registers to FFH.
Address: FF23H After reset: FFH R/W
Symbol 7 6 5 4 3 2 1 0
PM3 1 1 1 PM34 PM33 PM32 PM31 1
PM3n P3n pin I/O mode selection (n = 1 to 4)
0 Output mode (output buffer on)
1 Input mode (output buffer off)