Table of Contents
Advertisement
www.DataSheet4U.com
Figure 6-14. P60 to P63 Block Diagrams
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 6-15. P64 to P67 Block Diagrams
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
V
DD
Mask Option resistors
Mask ROM versions only
PD78P014 and 78P014Y
have no pull-up resistor.
P60 to P63
V
DD
P-ch
P64/RD,
P65/WR,
P66/WAIT,
P67/ASTB
145
Advertisement
Table of Contents
