NEC uPD78P078 - Manual (Page 154)

154
CHAPTER 6 PORT FUNCTIONS
Figure 6-21. Block Diagram of P102 and P103
PUO : Pull-up resistor option register
PM : Port mode register
RD : Port 6 read signal
WR : Port 6 write signal
P-ch
WR PM
WR PORT
RD
WR PUO
V
DD
Selector
PUO10
Output Latch
(P102, P103)
PM102, PM103
Internal bus
P102, P103