PCF8584 datasheet(19/40 Pages) PHILIPS

19 / 40 page

1997 Oct 21

Philips Semiconductors

Product speciﬁcation

I2C-bus controller

PCF8584

Fig.9 Slave receiver/slave transmitter modes.

handbook, full pagewidth

START

read byte from S1 register

END

A0 = HIGH

A0 = LOW

addressed as slave

(AAS = 1?)

yes

read byte from S1 register

PIN bit = 0?

yes

read byte from S0 register

read or write?

(LSB = 1 or 0?)

read byte from S1 register

PIN bit = 0?

R/W = 1

SLAVE

TRANSMITTER

MODE

yes

negative

ACK received?

(LRB = 1?)

yes

write last data byte

to S0 register

A0 = HIGH

A0 = LOW

END

read byte from S1 register

PIN bit = 0?

R/W = 0

SLAVE

RECEIVER

MODE

yes

STOP detected?

(STS = 1?)

yes

read last data byte

from S0 register

write data to S0 register

read data from S0 register

PIN deactivated

(set to '1')

PCF8584 goes into

slave receiver

mode

Read incoming address to

determine if the R/W bit is 0 or 1

This will differentiate between

slave receiver or slave

transmitter modes.

Check that 'own address'

has arrived correctly

Check whether

'addressed as slave'

MBE713

PCF8584 Datasheet(PDF) 19 Page - NXP Semiconductors

PCF8584 Datasheet(HTML) 19 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

Datasheet Download

Link URL