Block Diagram Of P71 And P72 - NEC PD78076 User Manual

Figure 6-16. Block Diagram of P71 and P72
WR
PUO
PUO7
RD
WR
PORT
Output Latch
(P71, P72)
WR
PM
PM71, PM72
Dual Function
PUO : Pull-up resistor option register
PM : Port mode register
RD : Port 7 read signal
WR : Port 7 write signal
CHAPTER 6 PORT FUNCTIONS
Selector
V
DD
P-ch
P71/SO2/TxD,
P72/SCK2/ASCK
149