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CAT1021WI-25T2 参数 Datasheet PDF下载

CAT1021WI-25T2图片预览
型号: CAT1021WI-25T2
PDF下载: 下载PDF文件 查看货源
内容描述: 监控电路,带有I2C串行2K位CMOS EEPROM ,手动复位及看门狗定时器 [Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer]
分类和应用: 监控可编程只读存储器电动程控只读存储器电可擦编程只读存储器
文件页数/大小: 21 页 / 278 K
品牌: CATALYST [ CATALYST SEMICONDUCTOR ]
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CAT1021, CAT1022, CAT1023  
Page Write  
The CAT1021/22/23 writes up to 16 bytes of data in  
a single write cycle, using the Page Write operation.  
The page write operation is initiated in the same  
manner as the byte write operation, however instead  
of terminating after the initial byte is transmitted, the  
Master is allowed to send up to 15 additional bytes.  
After each byte has been transmitted, the  
CAT1021/22/23 will respond with an acknowledge  
and internally increment the lower order address bits  
by one. The high order bits remain unchanged.  
If the Master transmits more than 16 bytes before  
sending the STOP condition, the address counter  
‘wraps around,’ and previously transmitted data will be  
overwritten.  
When all 16 bytes are received, and the STOP condition  
has been sent by the Master, the internal programming  
cycle begins. At this point, all received data is written to  
the CAT1021/22/23 in a single write cycle.  
Figure 8. Byte Write Timing  
S
T
A
R
T
S
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O
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BUS ACTIVITY:  
MASTER  
SLAVE  
ADDRESS  
BYTE  
ADDRESS  
DATA  
SDA LINE  
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P
A
C
K
A
C
K
A
C
K
Figure 9: Page Write Timing  
S
T
A
R
T
S
T
O
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BUS ACTIVITY:  
MASTER  
SLAVE  
ADDRESS  
BYTE  
ADDRESS (n)  
DATA n  
DATA n+1  
DATA n+15  
SDA LINE  
S
P
A
C
K
A
C
K
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A
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K
A
C
K
© 2007 Catalyst Semiconductor, Inc.  
Characteristics subject to change without notice  
11  
Doc. No. 3009 Rev. L  
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