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BQ2022 Datasheet(PDF) 11 Page - Texas Instruments

Part # BQ2022
Description  1K-BIT SERLAL EPROM WITH SDQ INTERFACE
Download  19 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ2022 Datasheet(HTML) 11 Page - Texas Instruments

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bq2022
SLUS526B − OCTOBER 2002 − REVISED OCTOBER 2003
www.ti.com
11
UDG−02064
Write Status
Command?
(55h)
Selected
State
Selected
State
bq2022 Receives Low Address Byte
(LSB First) AD0 to AD7
bq2022 Receives High Address Byte
(LSB First) AD8 to AD15
bq2022 Loads Address Into Address Counter
bq2022 Receives 1 Bytes of Data
and Stores in RAM Buffer
bq2022 Transmits CRC of Write Status
Command, Address, and Data
Code 5Ah
Received
Y
N
Y
N
N
Y
Contents of RAM buffer AND’ed with contents of
data memory as pointed to by address counter.
Programming time required to be at least
t
bq2022
Transmits Data Byte of
Status Memory Pointed
to by Address Counter
bq2022 Waits for Reset
End of Status
Memory?
Y
N
bq2022
Increments Address
Counter and Loads
New Address into CRC
Register
bq2022
Receives Data Byte
bq2022
Calculates and Transmits
CRC of Loaded Address and
Shifted Data
VDATA = VPP?
EPROG
when VPP is applied to the data pin
Figure 11. WRITE STATUS Command Flow


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