BQ2022A_17 Datasheet, PDF (14/37 Pages) Texas Instruments – 1K-Bit Serial EPROM with SDQ Interface

bq2022A
SLUS724E – SEPTEMBER 2006 – REVISED MARCH 2016
Selected
State
Write Status
N
Command?
(55h)
Y
bq2022A Receives Low Address Byte
(LSB First) AD0 to AD7
Selected
State
bq2022A Receives High Address Byte
(LSB First) AD8 to AD15
bq2022A Loads Address into Address Counter
bq2022A Receives 1 Byte of Data
and Stores in RAM Buffer
bq2022A Transmits CRC of Write Status
Command, Address, and Data
bq2022A
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
bq2022A
Receives Data Byte
bq2022A
Transmits Data Byte of
Status Memory Pointed
to by Address Counter
bq2022A
Increments Address
Counter and Loads
New Address into CRC
Register
End of Status N
Memory?
Y
bq2022A Waits for Reset
Figure 11. WRITE STATUS Command Flow
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