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BQ29312 Datasheet(PDF) 6 Page - Texas Instruments

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Part # BQ29312
Description  THREE AND FOUR CELL LITHIUM-LON ORLITHIUM-POLYMER BATTERY PROTECTION AFE
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ29312 Datasheet(HTML) 6 Page - Texas Instruments

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bq29312
SLUS546D − MARCH 2003 − REVISED SEPTEMBER 2004
www.ti.com
6
AC ELECTRICAL CHARACTERISTICS
TA = 25°C, C(REG) = 4.7 µF, BAT = 14 V (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN
NOM
MAX
UNIT
t(WDTINT) WDT start-up detect time
250
700
2000
ms
t(WDWT) WDT detect time
100
µs
AC TIMING SPECIFICATIONS (I2C COMPATIBLE SERIAL INTERFACE)
PARAMETER
MIN
MAX
UNIT
tr
SCLK SDATA rise time
1000
ns
tf
SCLK SDAT fall time
300
ns
tw(H)
SCLK pulse width high
4.0
µs
tw(L)
SCLK pulse width low
4.7
µs
tsu(STA)
Setup time for START condition
4.7
µs
th(STA)
START condition hold time after which first clock pulse is generated
4.0
µs
tsu(DAT)
Data setup time
250
ns
th(DAT)
Data hold time
0
µs
tsu(STOP)
Setup time for STOP condition
4.0
µs
tsu(BUF)
Time the bus must be free before new transmission can start
4.7
µs
t V
Clock low to data out valid
900
ns
th(CH)
Data out hold time after clock low
0
ns
fSCL
Clock frequency
0
100
kHz
tsu(STA)
SCLK
SDATA
SCLK
SDATA
SCLK
SDATA
tw(H)
tw(L)
tf
tr
tr
tf
Start
Condition
SDA
Input
SDA
Change
Stop
Condition
th(STA)
th(DAT)
tsu(DAT)
th(ch)
Start Condition
tv
12
3
7
89
MSB
ACK
Stop Condition
tsu(STOP)
12
3
7
89
MSB
ACK
tsu(BUF)


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