BQ27742-G1 Datasheet, PDF (13/46 Pages) Texas Instruments – Single-Cell Li-Ion Battery Fuel Gauge with Programmable Hardware Protection

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bq27742-G1
SLUSBV9C – MARCH 2014 – REVISED FEBRUARY 2016
t(B)
t(BR)
(a) Break and Break Recovery
t(RISE)
1.2V
(b) HDQ line rise time
t(HW1)
t(HW0)
t(CYCH)
(c) Host Transmitted Bit
t(DW1)
t(DW0)
t(CYCD)
(d) Gauge Transmitted Bit
Break
7-bit address
1-bit
R/W
8-bit data
t(RSPS)
(e) Gauge to Host Response
t(RST)
(f) HDQ Reset
a. HDQ Breaking
b. Rise time of HDQ line
c. HDQ Host to fuel gauge communication
d. Fuel gauge to Host communication
e. Fuel gauge to Host response format
f. HDQ Host to fuel gauge
A. HDQ Breaking
B. Rise time of HDQ line
C. HDQ Host to fuel gauge communication
D. Fuel gauge to Host communication
E. Fuel gauge to Host response format
F. HDQ Host to fuel gauge reset
Figure 2. HDQ Communication Timing Diagrams
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