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PCF85116-3 Datasheet(PDF) 7 Page - NXP Semiconductors

Part No. PCF85116-3
Description  2048 x 8-bit CMOS EEPROM with I2C-bus interface
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCF85116-3 Datasheet(HTML) 7 Page - NXP Semiconductors

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Philips Semiconductors
PCF85116-3
2048
× 8-bit CMOS EEPROM with I2C-bus interface
Product data
Rev. 04 — 25 October 2004
7 of 21
9397 750 14217
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
After the receipt of each data byte, the six high-order bits of the memory address
providing access to one of the 64 pages of the memory remain unchanged. The five
low-order bits of the memory address will be incremented only (see Figure 4). By
these five bits a single byte within the page in access is selected. By an increment the
memory address may change from 31 to 0, from 63 to 32, etc. If the master transmits
more than 32 bytes prior to generating the STOP condition, data within the addressed
page may be overwritten and unpredictable results may occur. As in the byte write
operation, all inputs are disabled until completion of the internal write cycles.
Remark: Write accesses to the EEPROM are enabled if the pin WP is LOW. When
WP is HIGH the EEPROM is write-protected and no acknowledge will be given by the
PCF85116-3 when data is sent. However, an acknowledge will be given after the
slave address and the word address.
Fig 4.
Auto-increment of memory address.
B2
B3
B1
WORD ADDRESS
002aaa288
read: auto increment
write: unchanged
write: auto increment
Fig 5.
Auto increment memory address; two byte write.
S
1010
0
B1
B2
B3
A
WORD ADDRESS
AA
DATA
P
SLAVE ADDRESS
acknowledge
from slave
acknowledge
from slave
acknowledge
from slave
acknowledge
from slave
A
DATA
R/W
auto increment
word address
auto increment
word address
 === '


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