Datasheet

18
bq2014
Serial Communication Timing Specification
Symbol Parameter Minimum Typical Maximum Unit Notes
t
CYCH
Cycle time, host to bq2014 3 - - ms See note
t
CYCB
Cycle time, bq2014 to host 3 - 6 ms
t
STRH
Start hold, host to bq2014 5 - - ns
t
STRB
Start hold, bq2014 to host 500 - -
µ
s
t
DSU
Data setup - - 750
µ
s
t
DH
Data hold 750 - -
µ
s
t
DV
Data valid 1.50 - - ms
t
SSU
Stop setup - - 2.25 ms
t
SH
Stop hold 700 - -
µ
s
t
SV
Stop valid 2.95 - - ms
t
B
Break 3 - - ms
t
BR
Break recovery 1 - - ms
Note: The open-drain DQ pin should be pulled to at least V
CC
by the host system for proper DQ operation.
DQ may be left floating if the serial interface is not used.
TD201002.eps
DQ
(R/W "1")
t
STRH
t
STRB
t
DSU
t
DH
t
DV
t
SV
t
SSU
t
SH
t
CYCH,
t
CYCB,
t
B
t
BR
DQ
(R/W "0")
DQ
(BREAK)
Serial Communication Timing Illustration