1997 Mar 25

18

Philips Semiconductors

Product specification

Low power clock/calendar

PCF8593

Fig.19 Master reads after setting word address (write word address, READ data).

handbook, full pagewidth

S

0A

SLAVE ADDRESS

WORD ADDRESS

A

A

SLAVE ADDRESS

acknowledgement

from slave

acknowledgement

from slave

acknowledgement

from slave

R/W

acknowledgement

from master

A

DATA

auto increment

memory word address

MBD823

P

no acknowledgement

from master

1

DATA

auto increment

memory word address

last byte

R/W

S1

n bytes

at this moment master -

transmitter becomes

master - receiver and

PCF8593 slave - receiver

becomes slave - transmitter

Fig.20 Master reads slave immediately after first byte (READ mode).

handbook, full pagewidth

S

1A

SLAVE ADDRESS

DATA

A1

DATA

acknowledgement

from slave

acknowledgement

from slave

acknowledgement

from slave

R/W

auto increment

word address

MBD824

auto increment

word address

n bytes

last bytes

P