Rainbow-electronics ATmega161L Bedienungsanleitung PDF herunterladen (Seite 96)

96

ATmega161(L)

1228C–AVR–08/02

Figure 59. Port B Schematic Diagram (Pin PB4)

Figure 60. Port B Schematic Diagram (Pin PB5)

DATA BUS

D

D

Q

Q

RESET

RESET

C

C

WD

WP

RD

MOS

PULL-

UP

PB4

SPI SS

MSTR

SPE

WP:

WD:

RL:

RP:

RD:

MSTR:

SPE:

WRITE PORTB

WRITE DDRB

READ PORTB LATCH

READ PORTB PIN

READ DDRB

SPI MASTER ENABLE

SPI ENABLE

DDB4

PORTB4

RL

RP

DATA BUS

D

D

Q

Q

RESET

RESET

C

C

WD

WP

RD

MOS

PULL-

UP

PB5

R

R

WP:

WD:

RL:

RP:

RD:

SPE:

MSTR

WRITE PORTB

WRITE DDRB

READ PORTB LATCH

READ PORTB PIN

READ DDRB

SPI ENABLE

MASTER SELECT

DDB5

PORTB5

SPE

MSTR

SPI MASTER

OUT

SPI SLAVE

IN

RL

RP

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