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參數(shù)資料
| 型號： | CAT24C256WI-GT3 |
| 英文描述： | 256-Kb I2C CMOS Serial EEPROM |
| 中文描述： | 256 - KB的的I2C的CMOS串行EEPROM |
| 文件頁數(shù)： | 6/14頁 |
| 文件大?。?/td> | 526K |
| 代理商： | CAT24C256WI-GT3 |
CAT24C256
6
Doc. No. 04, Rev. D
2007 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
WRITE OPERATIOnS
byte Write
In Byte Write mode the Master sends a START, followed
by Slave address, two byte address and data to be
written (Figure 5). The Slave acknowledges all 4 bytes,
and the Master then follows up with a STOP, which in
turn starts the internal Write operation (Figure 6). During
internal Write, the Slave will not acknowledge any Read
or Write request from the Master.
Page Write
The CAT24C256 contains 32,768 bytes of data, arranged
in 52 pages of 64 bytes each. A two byte address word,
following the Slave address, points to the first byte to be
written. The most significant bit of the address word is
‘don’t care’, the next 9 bits identify the page and the last
6 bits identify the byte within the page. Up to 64 bytes
can be written in one Write cycle (Figure 7).
The internal byte address counter is automatically in-
cremented after each data byte is loaded. If the Master
transmits more than 64 data bytes, then earlier bytes will
be overwritten by later bytes in a ‘wrap-around’ fashion
(within the selected page). The internal Write cycle starts
immediately following the STOP.
Acknowledge Polling
Acknowledge polling can be used to determine if the
CAT24C256 is busy writing or is ready to accept com-
mands. Polling is implemented by interrogating the
device with a ‘Selective Read’ command (see READ
OPERATIONS).
The CAT24C256 will not acknowledge the Slave address,
as long as internal Write is in progress.
Hardware Write Protection
With the WP pin held HIGH, the entire memory is pro-
tected against Write operations. If the WP pin is left
floating or is grounded, it has no impact on the operation
of the CAT24C256.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT24C256WI-GT3 | 制造商:ON Semiconductor 功能描述:IC EEPROM 256KBIT SERIAL 400KHZ SOIC-8 |
| CAT24C256XE | 制造商:Rochester Electronics LLC 功能描述: 制造商:ON Semiconductor 功能描述: |
| CAT24C256XE-T2 | 制造商:ON Semiconductor 功能描述: |
| CAT24C256XI | 功能描述:電可擦除可編程只讀存儲器 (32768x8) 256K RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT24C256XI | 制造商:ON Semiconductor 功能描述:IC EEPROM 256KBIT SERIAL 400KHZ SOIC-8 制造商:ON Semiconductor 功能描述:IC, EEPROM, 256KBIT SERIAL 400KHZ SOIC-8 |
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