Texas Instruments BQ2022A Evaluation Module BQ2022AEVM-001 BQ2022AEVM-001 Datenbogen
Produktcode
BQ2022AEVM-001
www.ti.com
Write Status
Command?
(55h)
Selected
State
Selected
State
bq2022A Receives Low Address Byte
(LSB First) AD0 to AD7
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
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
bq2022A
Transmits Data Byte of
Status Memory Pointed
to by Address Counter
bq2022A Waits for Reset
End of Status
Memory?
Y
N
bq2022A
Increments Address
Counter and Loads
New Address into CRC
Register
bq2022A
Receives Data Byte
bq2022A
Calculates and Transmits
CRC of Loaded Address and
Shifted Data
V
= V
?
DATA
PP
EPROG
when VPP is applied to the data pin
SLUS724C – SEPTEMBER 2006 – REVISED AUGUST 2007
Figure 11. WRITE STATUS Command Flow
Copyright © 2006–2007, Texas Instruments Incorporated
11
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