BQ2011_15 Datasheet, PDF (17/26 Pages) Texas Instruments – Gas Gauge IC for High Discharge Rates

bq2011
Serial Communication Timing Specification (TA = TOPR)
Symbol
Parameter
Minimum Typical Maximum Unit
Notes
tCYCH
tCYCB
tSTRH
tSTRB
tDSU
tDH
tDV
tSSU
tSH
tSV
tB
tBR
Cycle time, host to bq2011
Cycle time, bq2011 to host
Start hold, host to bq2011
Start hold, bq2011 to host
Data setup
Data hold
Data valid
Stop setup
Stop hold
Stop valid
Break
Break recovery
3
3
5
500
-
750
1.50
-
700
2.95
3
1
-
-
ms See note
-
6
ms
-
-
ns
-
-
µs
-
750
µs
-
-
µs
-
-
ms
-
2.25
ms
-
-
µs
-
-
ms
-
-
ms
-
-
ms
Note:
The open-drain DQ pin should be pulled to at least VCC by the host system for proper DQ operation.
DQ may be left floating if the serial interface is not used.
Serial Communication Timing Illustration
DQ
(R/W "1")
DQ
(R/W "0")
DQ
(BREAK)
tSTRH
tSTRB
tDSU
tDH
tDV
tSSU
tSV
tCYCH, tCYCB, tB
tSH
tBR
17