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參數(shù)資料
| 型號： | CAT24C00UITE13 |
| 元件分類： | EEPROM |
| 英文描述： | 128-bit Serial EEPROM |
| 中文描述： | 128位串行EEPROM |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 414K |
| 代理商： | CAT24C00UITE13 |
CAT24C00
6
Doc. No. 1027, Rev. N
bits are transmitted before the stop bit is sent, then
the device will clear the previously loaded byte and
begin loading the data buffer again. If more than one
data byte is transmitted to the device and a stop bit
is sent before a full eight bits of data have been
transmitted, then the write command will abort and
no data will be written.
Acknowledge Polling
The disabling of the inputs 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 CAT24C00 initiates the internal write cycle. ACK
polling can be initiated immediately. This involves
issuing the start condition followed by the slave address
for a write operation. If the CAT24C00 is still busy with
the write operation, no ACK will be returned. If the
CAT24C00 has completed the write operation, an ACK
will be returned and the host can then proceed with the
next read or write operation.
READ OPERATIONS
The READ operation for the CAT24C00 is initiated in the
same manner as the write operation with the one
exception that the R/
W
bit is set to a one. Three different
READ operations are possible: Immediate Address
READ, Selective READ and Sequential READ.
Immediate Address Read
The device
’
s address counter contains the address of
the last byte accessed, incremented by one. In other
words, if the last READ access was to address N, the
READ immediately following would access data from
address N+1. If N=15, then the counter will 'wrap around'
to address 0 and continue to clock out data.
Figure 5. Slave Address Bits
1
0
1
0
X X X
R/W
CAT24C00
Selective Read
Selective READ operations allow the Master device to
select at random any memory location for a READ
operation. The Master device first performs a
‘
dummy
’
write operation by sending the START condition, slave
address and byte address of the location it wishes to
read. After the CAT24C00 acknowledges the word
address, the Master device resends the START condition
and the slave address, this time with the R/
W
bit is set to
one. The CAT24C00 then responds with its acknowledge
and sends the 8-bit byte requested. To end the Read
Operation the master device does not send an
acknowledge but will generate a STOP condition.
Sequential Read
The Sequential READ operation can be initiated by
either the immediate Address READ or Selective READ
operations. After the CAT24C00 sends initial 8-bit byte
requested, the Master will respond with an acknowledge
which tells the device it requires more data. The
CAT24C00 will continue to output an 8-bit byte for each
acknowledge sent by the Master. The operation is
terminated when the Master fails to respond with an
acknowledge, thus sending the STOP condition.
The data being transmitted from the CAT24C00 is
outputted sequentially with data from address N followed
by data from address N+1. The READ operation address
counter increments all of the CAT24C00 address bits so
that the entire memory array can be read during one
operation. If more than 16 bytes are read out, the counter
will
“
wrap around
”
and continue to clock out data bytes.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT24C00WETE13 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:128-bit Serial EEPROM |
| CAT24C00WITE13 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:128-bit Serial EEPROM |
| CAT24C00YETE13 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:128-bit Serial EEPROM |
| CAT24C00YE-TE13 | 制造商:ON Semiconductor 功能描述:EEPROM Serial-I2C 128-Bit 16 x 8 2.5V/3.3V 8-Pin TSSOP T/R |
| CAT24C00YITE13 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:128-bit Serial EEPROM |
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