Rainbow-electronics AT90LS4433 Manual do Utilizador descarregar pdf (Página 84)

84

AT90S/LS4433

1042G–AVR–09/02

Figure 60. Port D Schematic Diagram (Pins PD4 and PD5)

Figure 61. Port D Schematic Diagram (Pins PD6 and PD7)

WP:

WD:

RL:

RP:

RD:

n:

WRITE PORTD

WRITE DDRD

READ PORTD LATCH

READ PORTD PIN

READ DDRD

4, 5

PDn

PORTBn

DDDn

2

DATA BUS

D

D

Q

Q

RESET

RESET

C

C

WD

WP

RD

MOS

PULL-

UP

PDn

AINm

TO COMPARATOR

WP:

WD:

RL:

RP:

RD:

n:

m:

WRITE PORTD

WRITE DDRD

READ PORTD LATCH

READ PORTD PIN

READ DDRD

6, 7

0, 1

PWRDN

DDDn

PORTDn

RL

RP

PWRDN:

POWER DOWN MODE

1 2 ... 79 80 81 82 83 84 85 86 87 88 89 ... 124 125

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