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ACELECTRICALCHARACTERISTICS
actimingspecifications(i
2
ccompatibleserialinterface)
t
su(sta)
SCLK
SDATA
SCLK
SDATA
SCLK
SDATA
t
w(h)
t
w(l)
t
f
t
r
t
r
t
f
开始
情况
SDA
输入
SDA
改变
停止
情况
t
h(sta)
t
h(dat)
t
su(dat)
t
h(ch)
开始 情况
t
v
1 2 3 7 8 9
MSB
ACK
停止 情况
t
su(停止)
1 2 3 7 8 9
MSB
ACK
t
su(buf)
bq29312A
SLUS629A–JANUARY2005–REVISEDAUGUST2005
T
一个
=25°c,c
(reg)
=4.7µf,bat=14v(unlessotherwisenoted)
PARAMETERTESTCONDITIONMINNOMMAXUNIT
t
(wdtint)
wdtstart-updetecttime2507002000ms
t
(wdwt)
WDTdetecttime100µs
PARAMETERMINMAXUNIT
t
r
SCLKSDATArisetime1000ns
t
f
SCLKSDATfalltime300ns
t
w(h)
sclkpulsewidthhigh4.0µs
t
w(l)
sclkpulsewidthlow4.7µs
t
su(sta)
setuptimeforstartcondition4.7µs
t
h(sta)
startconditionholdtimeafterwhichfirstclockpulseisgenerated4.0µs
t
su(dat)
Datasetuptime250ns
t
h(dat)
Dataholdtime0µs
t
su(停止)
setuptimeforstopcondition4.0µs
t
su(buf)
timethebusmustbefreebeforenewtransmissioncanstart4.7µs
t
V
Clocklowtodataoutvalid900ns
t
h(ch)
Dataoutholdtimeafterclocklow0ns
f
SCL
Clockfrequency0100kHz
6
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