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| 型號： | CAT24FC01GLETE13 |
| 元件分類： | EEPROM |
| 英文描述： | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| 中文描述： | 該CAT24FC02是一個2 KB的EEPROM的國內256個8位每字舉辦的串行CMOS |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 634K |
| 代理商： | CAT24FC01GLETE13 |
DsconinuedPat
CAT24FC01
5
Doc No. 1073, Rev. G
2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
I
2
C BUS PROTOCOL
The following defines the features of the I
2
C bus proto-
col:
(1) Data transfer may be initiated only when the bus is
not busy.
(2) During a data transfer, the data line must remain
stable whenever the clock line is high. Any changes
in the data line while the clock line is high will be
interpreted as a START or STOP condition.
START Condition
The START Condition precedes all commands to the
device, and is defined as a HIGH to LOW transition of
SDA when SCL is HIGH. The CAT24FC01 monitors the
SDA and SCL lines and will not respond until this
condition is met.
STOP Condition
A LOW to HIGH transition of SDA when SCL is HIGH
determines the STOP condition. All operations must end
with a STOP condition.
DEVICE ADDRESSING
The Master begins a transmission by sending a START
condition. The Master then sends the address of the
particular slave device it is requesting. The four most
significant bits of the 8-bit slave address are fixed as
1010 for the CAT24FC01 (see Fig. 5). The next three
significant bits (A2, A1, A0) are the device address bits
and define which device the Master is accessing. Up to
eight CAT24FC01 may be individually addressed by the
system. The last bit of the slave address specifies
whether a Read or Write operation is to be performed.
When this bit is set to 1, a Read operation is selected,
and when set to 0, a Write operation is selected.
After the Master sends a START condition and the slave
address byte, the CAT24FC01 monitors the bus and
its address matches the transmitted slave address. The
CAT24FC01 then performs a Read or a Write operation
depending on the state of the R/W bit.
Acknowledge
After a successful data transfer, each receiving device is
required to generate an acknowledge. The Acknowledg-
ing device pulls down the SDA line during the ninth clock
cycle, signaling that it received the 8 bits of data.
The CAT24FC01 responds with an acknowledge after
receiving a START condition and its slave address. If the
device has been selected along with a write operation,
it responds with an acknowledge after receiving each
byte.
When the CAT24FC01 begins a READ mode, it trans-
mits 8 bits of data, releases the SDA line, and monitors
the line for an acknowledge. Once it receives this ac-
knowledge, the CAT24FC01 will continue to transmit
data. If no acknowledge is sent by the Master, the device
terminates data transmission and waits for a STOP
condition.
Figure 4. Acknowledge Timing
Figure 5. Slave Address Bits
1
DEVICE ADDRESS
0
1
0
A2
A1
A0
R/W
Normal Read and Write
ACKNOWLEDGE
1
START
SCL FROM
MASTER
8
9
DATA OUTPUT
FROM TRANSMITTER
DATA OUTPUT
FROM RECEIVER
相關PDF資料 |
PDF描述 |
|---|---|
| CAT24FC01GLITE13 | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| CAT24FC01GWETE13 | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| CAT24FC01GWITE13 | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| CAT24FC01GYETE13 | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| CAT24FC01GYITE13 | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CAT24FC01JI-TE13 | 制造商:ON Semiconductor 功能描述:EEPROM Serial-I2C 1K-Bit 128 x 8 2.5V/3.3V/5V 8-Pin SOIC N T/R |
| CAT24FC256JA-1.8 | 功能描述:電可擦除可編程只讀存儲器 256K (32KX8) 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT24FC256JI-1.8 | 功能描述:電可擦除可編程只讀存儲器 256K (32KX8) Industrial Temp 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT24FC256KI-1.8 | 功能描述:電可擦除可編程只讀存儲器 256K (32KX8) 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT24FC256LI | 制造商:Rochester Electronics LLC 功能描述: 制造商:Catalyst Semiconductor 功能描述: |
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