參數(shù)資料
型號: CAT1027WI-28-GT3
英文描述: Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
中文描述: 雙電壓監(jiān)控電路,帶有I2C串行的2K位CMOS EEPROM的
文件頁數(shù): 12/20頁
文件大?。?/td> 299K
代理商: CAT1027WI-28-GT3
CAT1026, CAT1027
Doc. No. 3010 Rev. L
12
2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Acknowledge Polling
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 opration, the CAT1026 and CAT1027
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 device is still busy with the write
operation, no ACK will be returned. If a write
operation has completed, 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 CAT1026 and CAT1027 is
initiated in the same manner as the write operation with
one exception, the R/ˉˉ bit is set to one. Three different
READ operations are possible: Immediate/Current
Address
READ,
Selective/Random
Sequential READ.
READ
and
Figure 10. Immediate Address Read Timing
SCL
SDA
8TH BIT
STOP
NO ACK
DATA OUT
8
9
SLAVE
ADDRESS
S
A
C
K
DATA
N
O
A
C
K
S
T
O
P
P
BUS ACTIVITY:
MASTER
SDA LINE
S
T
A
R
T
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