PCF8573 データシートの表示（PDF） - Philips Electronics

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PCF8573

Clock/calendar with serial I/O

Philips Electronics 

Philips Semiconductors

Clock/calendar with serial I/O

Product specification

PCF8573

handbook, full pagewidth

acknowledge

from slave

acknowledge

from slave

acknowledge

from slave

R/W

S

CLOCK/CALENDAR

ADDRESS

0A

MODE POINTER

R/W msb

A

S

CLOCK/CALENDAR

ADDRESS

1

A

DATA

acknowledge

from master

lsb msb

A

at this moment master

transmitter becomes

master receiver, and

CLOCK/CALENDAR

becomes slave

transmitter

(n − 1) bytes

auto increment

of B1, B0

no acknowledge (1)

lsb

DATA

1P

nth byte

auto increment

of B1, B0

MBL809

(1) The master receiver must signal an end of data to the slave transmitter by not generating an acknowledge on the last byte that has been clocked

out of the slave.

Fig.10 Master transmitter reads clock/calendar after setting mode pointer.

handbook, halfpage

acknowledge

from slave

R/W MSB

S

CLOCK/CALENDAR

ADDRESS

1A

DATA

acknowledge

from master (1)

LSB

AP

n bytes

auto increment

of B1, B0

MBL810

(1) The master receiver must signal an end of data to the slave transmitter by not generating an acknowledge on the last byte that has been clocked

out of the slave.

Fig.11 Master reads clock/calendar immediately after first byte.

2003 Jan 27

10

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