NEC 78K0/KB1+ Preliminary User's Manual page 71

WR
PU
PU1
PU12, PU15
RD
WR
PORT
Output latch
(P12, P15)
WR
PM
PM1
PM12, PM15
Alternate
function
PU1: Pull-up resistor option register 1
PM1: Port mode register 1
RD: Read signal
WR××: Write signal
CHAPTER 4 PORT FUNCTIONS
Figure 4-7. Block Diagram of P12 and P15
Preliminary User's Manual U16846EJ1V0UD
V
DD
P-ch
P12/SO10,
P15/TOH0
71