BQ34Z110 Datasheet, PDF (7/11 Pages) Texas Instruments – Wide Range Fuel Gauge with Impedance Track™ for Lead-Acid Batteries

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bq34z110
SLUSB55 – JUNE 2012
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
Figure 3. Timing Diagrams
I²C-COMPATIBLE INTERFACE TIMING CHARACTERISTICS
T_A = –40°C to 85°C, C_REG = 0.47 μF, 2.45 V < V_REGIN = V_BAT < 5.5 V; typical values at T_A = 25°C and V_REGIN = V_BAT = 3.6 V
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
t_r
t_f
t_w(H)
t_w(L)
t_su(STA)
t_d(STA)
t_su(DAT)
t_h(DAT)
t_su(STOP)
t_BUF
f_SCL
SCL/SDA rise time
SCL/SDA fall time
SCL pulse width (high)
SCL pulse width (low)
Setup for repeated start
Start to first falling edge of SCL
Data setup time
Data hold time
Setup time for stop
Bus free time between stop and start
Clock frequency
300
ns
300
ns
600
ns
1.3
μs
600
ns
600
ns
100
ns
0
ns
600
ns
66
μs
400
kHz
t_SU(STA)
t_w(H)
t_w(L)
t_f
t_r
t_(BUF)
SCL
SDA
t_d(STA)
t_f
t_r
t_h(DAT)
t_su(DAT)
t_su(STOP)
REPEATED
START
STOP
START
Figure 4. I²C-Compatible Interface Timing Diagrams
Copyright © 2012, Texas Instruments Incorporated
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