BQ27000_07 Datasheet, PDF (4/33 Pages) Texas Instruments – SINGLE CELL Li-Ion AND Li-Pol BATTERY GAS GAUGE IC FOR PORTABLE APPLICATIONS (bqJUNIOR)

bq27000, bq27200
SLUS556D – SEPTEMBER 2004 – REVISED MARCH 2006
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range and supply voltage range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
STANDARD HDQ SERIAL COMMUNICATION TIMING (bq27000 only)
t_(B)
Break timing
t_(BR)
Break recovery
t_(CYCH)
Host bit window
t_(HW1)
Host sends 1
t_(HW0)
Host sends 0
t_(RSPS)
bqJUNIOR to host response
t_(CYCD)
bqJUNIOR bit window
t_(DW1)
bqJUNIOR sends 1
t_(DW0)
bqJUNIOR sends 0
STANDARD I²C SERIAL COMMUNICATION TIMING (bq27200 only)
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)
t_(BUSERR)
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
Bus error timeout
MIN
190
40
190
0.5
86
190
190
32
80
4
4.7
4.7
4
250
300
4
4.7
17.3
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TYP
MAX UNIT
50
145 µs
320
250
50
145
1 µs
300 ns
µs
ns
µs
100 kHz
21.2 s
4
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