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參數(shù)資料
| 型號(hào)： | X24C02 |
| 英文描述： | Serial EEPROM(寫保護(hù)引腳,串行EEPROM) |
| 中文描述： | 串行EEPROM（寫保護(hù)引腳，串行EEPROM的） |
| 文件頁數(shù)： | 5/17頁 |
| 文件大?。?/td> | 130K |
| 代理商： | X24C02 |
X24C02
5
DEVICE ADDRESSING
Following a start condition the master must output the
address of the slave it is accessing. The most significant
four bits of the slave are the device type identifier (see
Figure 4). For the X24C02 this is fixed as 1010[B].
The next three significant bits address a particular
device. A system could have up to eight X24C02 devices
on the bus (see Figure 10). The eight addresses are
defined by the state of the A
0
, A
1
and A
2
inputs.
The last bit of the slave address defines the operation to
be performed. When set to one a read operation is
selected, when set to zero a write operations is selected.
Figure 4. Slave Address
Following the start condition, the X24C02 monitors the
SDA bus comparing the slave address being transmit-
ted with its slave address (device type and state of A
0
,
A
1
and A
2
inputs). Upon a correct compare the X24C02
outputs an acknowledge on the SDA line. Depending on
the state of the R/W bit, the X24C02 will execute a read
or write operation.
WRITE OPERATIONS
Byte Write
For a write operation, the X24C02 requires a second
address field. This address field is the word address,
comprised of eight bits, providing access to any one of
the 256 words of memory. Upon receipt of the word
address the X24C02 responds with an acknowledge,
and awaits the next eight bits of data, again responding
with an acknowledge. The master then terminates the
transfer by generating a stop condition, at which time the
X24C02 begins the internal write cycle to the nonvolatile
memory. While the internal write cycle is in progress the
X24C02 inputs are disabled, and the device will not
respond to any requests from the master. Refer to
Figure 5 for the address, acknowledge and data transfer
sequence.
1
0
1
0
A2
A1
A0
R/W
DEVICE TYPE
IDENTIFIER
DEVICE
ADDRESS
Figure 6. Page Write
Figure 5. Byte Write
BUS ACTIVITY:
MASTER
SDA LINE
BUS ACTIVITY:
X24C02
S
T
A
R
T
SLAVE
ADDRESS
S
S
T
O
P
P
A
C
K
A
C
K
A
C
K
WORD
ADDRESS
DATA
3838 FHD F010
3838 FHD F011
3838 FHD F09
BUS ACTIVITY:
MASTER
SDA LINE
BUS ACTIVITY:
X24C02
S
T
A
R
T
SLAVE
ADDRESS
S
S
T
O
P
P
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
WORD
ADDRESS (n)
DATA n
DATA n+1
DATA n+3
NOTE: In this example n = xxxx 000 (B); x = 1 or 0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X24C04P-2.7 | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Crimp; Body Material:Aluminum; Series:PT02; Number of Contacts:5; Connector Shell Size:14; Connecting Termination:Crimp; Circular Shell Style:Box Mount Receptacle |
| X24C04S14M-2.7 | 2 CHANNEL DVI SWITCH W/ AUDIO |
| X24C04S14M-3 | VGA-USB ADAPTER |
| X24C04S14M-3.5 | CAT5 MULTI COMPONENT HI DEF 4 PORT TRANSMITTER |
| X24C04PI-2.7 | Serial E2PROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X24C02B | 制造商:ICMIC 制造商全稱:IC MICROSYSTEMS 功能描述:Serial E2PROM |
| X24C02BG | 制造商:ICMIC 制造商全稱:IC MICROSYSTEMS 功能描述:Serial E2PROM |
| X24C02BM | 制造商:ICMIC 制造商全稱:IC MICROSYSTEMS 功能描述:Serial E2PROM |
| X24C02BP | 制造商:ICMIC 制造商全稱:IC MICROSYSTEMS 功能描述:Serial E2PROM |
| X24C02BS8 | 制造商:ICMIC 制造商全稱:IC MICROSYSTEMS 功能描述:Serial E2PROM |
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