Format Of Port Mode Register 14 (Pm14) - NEC 78K0 User Manual

CHAPTER 12 CLOCK OUTPUT/BUZZER OUTPUT CONTROLLER
(2) Port mode register 14 (PM14)
This register sets port 14 input/output in 1-bit units.
When using the P140/INTP6/PCL pin for clock output and the P141/BUSY0/INTP7/BUZ pin for buzzer output,
clear PM140, PM141 and the output latch of P140, P141 to 0.
PM14 is set by a 1-bit or 8-bit memory manipulation instruction.
RESET input sets PM14 to FFH.
Address: FF2EH
Symbol 7
PM14 1
PM14n
0
1
Figure 12-3. Format of Port Mode Register 14 (PM14)
After reset: FFH R/W
6 5
1 PM145 PM144
P14n pin I/O mode selection (n = 0 to 5)
Output mode (output buffer on)
Input mode (output buffer off)
*
User's Manual U15947EJ2V0UD
4 3 2
PM143 PM142 PM141
1 0
PM140
275