P60 To P63 Block Diagram; P64 To P67 Block Diagram - NEC PD78056F User Manual

Figure 6-13. P60 to P63 Block Diagram
RD
WR
PORT
Output Latch
(P60 to P63)
WR
PM
PM60 to PM63
PM : Port mode register
RD : Port 6 read signal
WR : Port 6 write signal
Figure 6-14. P64 to P67 Block Diagram
WR
PUO
PUO6
RD
WR
PORT
Output Latch
(P64 to P67)
WR
PM
PM64 to PM67
PUO : Pull-up resistor option register
PM : Port mode register
RD : Port 6 read signal
WR : Port 6 write signal
CHAPTER 6 PORT FUNCTIONS
Selector
Selector
AV
DD
Mask Option Resistor
Mask ROM products
only. PROM versions
have no pull-up resistor.
P60 to P63
AV
DD
P-ch
P64/RD,
P65/WR,
P66/WAIT,
P67/ASTB
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