PCF85102C-2T 데이터 시트보기 (PDF) - Philips Electronics
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PCF85102C-2T Datasheet PDF : 20 Pages
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Philips Semiconductors
256 × 8-bit CMOS EEPROMs with
I2C-bus interface
Product specification
PCF85102C-2; PCF85103C-2
8.5 Read operations
The read operations are initiated in the same way 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 sequential read.
8.5.1 REMARK
The lower eight bits of the word address are incremented
after each transmission of a data byte (read or write).
The MSB of the word address, which is defined in the
slave address, is not changed when the word address
count overflows. Thus, the word address overflows from
255 to 0.
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.8 Master reads PCF8510xC-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
2000 Feb 15
Fig.9 Master reads PCF8510xC-2 immediately after first byte (read mode).
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