PCX8582X-2 Datasheet, PDF (11/20 Pages) NXP Semiconductors – 256 x 8-bit CMOS EEPROMS with I2C-bus interface

Philips Semiconductors
256 x 8-bit CMOS EEPROMS
with I²C-bus interface
Product specification
PCX8582X-2 Family
READ OPERATIONS
Read operations are initiated in the same manner as write operations with the exception that the LSB of the slave address
is set to logic 1. There are three basic read operations; current address read, random read and sequential read.
handbook, full pagewidth
acknowledge
from slave
acknowledge
from slave
acknowledge
from slave
acknowledge
from master
S SLAVE ADDRESS 0 A WORD ADDRESS A S SLAVE ADDRESS 1 A
R/W
at this moment master
R/W
transmitter becomes
master receiver and
EEPROM slave receiver
becomes slave transmitter
DATA
A
n bytes
auto increment
word address
no acknowledge
from master
MBA703 - 1
DATA
1P
last byte
auto increment
word address
Fig.6 Master reads PCX8582X-2 slave after setting word address (WRITE word address; READ data).
handbook, full pagewidth
acknowledge
from slave
acknowledge
from master
no acknowledge
from master
S SLAVE ADDRESS 1 A
R/W
DATA
A
DATA
1P
n bytes
auto increment
word address
last bytes
auto increment
word address
MBA704 - 1
Fig.7 Master reads PCX8582X-2 immediately after first byte (READ mode).
December 1994
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