152
CHAPTER 6 PORT FUNCTIONS
Figure 6-18. Block Diagram of P90 to P93
PM
: Port mode register
RD
: Port 9 read signal
WR : Port 9 write signal
Figure 6-19. Block Diagram of P94 to P96
PUO : Pull-up resistor option register
PM
: Port mode register
RD
: Port 9 read signal
WR : Port 9 write signal
Mask Option Resistor
WR
PM
WR
PORT
RD
V
DD
Selector
Output Latch
(P90 to P93)
PM90 to PM93
Internal bus
P90 to P93
Mask ROM versions only.
PD78P078 and 78P078Y
have no pull-up resistor.
µ
P-ch
WR
PM
WR
PORT
RD
WR
PUO
V
DD
Selector
PUO9
Output Latch
(P94 to P96)
PM94 to PM96
Internal bus
P94 to P96
Содержание PD78076
Страница 2: ...2 MEMO ...
Страница 12: ...12 MEMO ...
Страница 48: ...48 MEMO ...
Страница 64: ...64 MEMO ...
Страница 82: ...82 MEMO ...
Страница 100: ...100 MEMO ...
Страница 130: ...130 MEMO ...
Страница 180: ...180 MEMO ...
Страница 222: ...222 MEMO ...
Страница 248: ...248 MEMO ...
Страница 288: ...288 MEMO ...
Страница 308: ...308 MEMO ...
Страница 364: ...364 MEMO ...
Страница 494: ...494 MEMO ...
Страница 526: ...526 MEMO ...
Страница 544: ...544 MEMO ...
Страница 558: ...558 MEMO ...
Страница 580: ...580 MEMO ...
Страница 596: ...596 MEMO ...
Страница 598: ...598 MEMO ...
Страница 626: ...626 MEMO ...