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參數(shù)資料
| 型號： | CAT24C02WI-GT3 |
| 英文描述： | 1-Kb, 2-Kb, 4-Kb, 8-Kb and 16-Kb CMOS Serial EEPROM |
| 中文描述： | 1 - KB的，是以2 KB，4 - KB的，8 - kB和16 KB的的CMOS串行EEPROM |
| 文件頁數(shù)： | 6/17頁 |
| 文件大?。?/td> | 361K |
| 代理商： | CAT24C02WI-GT3 |
CAT24C01/02/04/08/16
6
Doc. No. 1115, Rev. C
2006 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
WRITE OPERATIONS
Byte Write
In Byte Write mode, the Master sends the START condi-
tion and the Slave address with the R/
W
bit set to zero
to the Slave. After the Slave generates an acknowledge,
the Master sends the byte address that is to be written
into the address pointer of the CAT24Cxx. After receiv-
ing another acknowledge from the Slave, the Master
transmits the data byte to be written into the addressed
memory location. The CAT24Cxx device will acknowl-
edge the data byte and the Master generates the STOP
condition, at which time the device begins its internal
Write cycle to nonvolatile memory (Figure 5). While this
internal cycle is in progress (t
WR
), the SDA output will
be tri-stated and the CAT24Cxx will not respond to any
request from the Master device (Figure 6).
Page Write
The CAT24Cxx writes up to 16 bytes of data in a single
write cycle, using the Page Write operation (Figure 7).
The Page Write operation is initiated in the same manner
as the Byte Write operation, however instead of termi-
nating after the data byte is transmitted, the Master is
allowed to send up to fifteen additional bytes. After each
byte has been transmitted the CAT24Cxx will respond
with an acknowledge and internally increments the four
low order address bits. The high order bits that define
the page address remain unchanged. If the Master
transmits more than sixteen bytes prior to sending the
STOP condition, the address counter ‘wraps around’ to
the beginning of page and previously transmitted data
will be overwritten. Once all sixteen bytes are received
and the STOP condition has been sent by the Master,
the internal Write cycle begins. At this point all received
data is written to the CAT24Cxx in a single write cycle.
Acknowledge Polling
The acknowledge (ACK) polling routine can be used to
take advantage of the typical write cycle time. Once the
stop condition is issued to indicate the end of the host’s
write operation, the CAT24Cxx initiates the internal write
cycle. The ACK polling can be initiated immediately. This
involves issuing the start condition followed by the slave
address for a write operation. If the CAT24Cxx is still
busy with the write operation, NoACK will be returned. If
the CAT24Cxx has completed the internal write operation,
an ACK will be returned and the host can then proceed
with the next read or write operation.
Hardware Write Protection
With the WP pin held HIGH, the entire memory is protected
against Write operations. If the WP pin is left floating or
is grounded, it has no impact on the operation of the
CAT24Cxx. The state of the WP pin is strobed on the
last falling edge of SCL immediately preceding the first
data byte (Figure 8). If the WP pin is HIGH during the
strobe interval, the CAT24Cxx will not acknowledge the
data byte and the Write request will be rejected.
Delivery State
The CAT24Cxx is shipped erased, i.e., all bytes are
FFh.
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PDF描述 |
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| CAT24C02WIT3 | 1-Kb, 2-Kb, 4-Kb, 8-Kb and 16-Kb CMOS Serial EEPROM |
| CAT24C02YI-GT3 | 1-Kb, 2-Kb, 4-Kb, 8-Kb and 16-Kb CMOS Serial EEPROM |
| CAT24C02YIT3 | 1-Kb, 2-Kb, 4-Kb, 8-Kb and 16-Kb CMOS Serial EEPROM |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT24C02WI-GT3 | 制造商:ON Semiconductor 功能描述:IC, EEPROM, 2KBIT, 400KHZ, SOIC-8 |
| CAT24C02WI-GT3-1 | 制造商:ON 功能描述:2K-Bit I2C Serial EEPROM 制造商:SCG 功能描述:2K-Bit I2C Serial EEPROM |
| CAT24C02WI-GT3A | 功能描述:電可擦除可編程只讀存儲器 2KB I2C SER 電可擦除可編程只讀存儲器 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 |
| CAT24C02WI-GT3-CUT TAPE | 制造商:ON 功能描述:CAT24C Series 2 Kb (16 X 128) 1.7 to 5.5 V I2C CMOS Serial EEPROM - SOIC-8 |
| CAT24C02WI-GT3JN | 功能描述:電可擦除可編程只讀存儲器 2KB I2C SER 電可擦除可編程只讀存儲器 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 |
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