BQ2024 Datasheet, PDF (11/19 Pages) Texas Instruments – 1.5K-BIT SERIAL EPROM WITH SDQ INTERFACE

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Selected
State
Write Status
N
Command?
(55h)
Y
bq2024 Receives Low Address Byte
(LSB First) AD0 to AD7
Selected
State
bq2024 Receives High Address Byte
(LSB First) AD8 to AD15
bq2024 Loads Address into Address Counter
bq2024 Receives 1 Byte of Data
and Stores in RAM Buffer
bq2024 Transmits CRC of Write Status
Command, Address, and Data
bq2024
SLUS770 – MAY 2007
bq2024
Calculates and Transmits
CRC of Loaded Address and
Shifted Data
N
Code 5Ah
Y
Received
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 _EPROG when VPP is applied to the data pin
VDATA = VPP? ^N
Y
bq2024
Receives Data Byte
bq2024
Transmits Data Byte of
Status Memory Pointed
to by Address Counter
bq2024
Increments Address
Counter and Loads
New Address into CRC
Register
End of Status N
Memory?
Y
bq2024 Waits for Reset
Figure 11. WRITE STATUS Command Flow
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