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TIMINGDIAGRAMS
1-位
r/w
UDG−03039
破裂 7−Bit地址 8−bit 数据
t
(b)
t
(br)
t
(hw1)
t
(hw0)
t
(cych)
t
(rsps)
t
(cycd)
t
(dw0)
t
(dw1)
(一个) 破裂 和 破裂 恢复
(b) host transmitted 位 (c) bqjunior transmitted 位
(d) bqjunior 至 host 回馈
bq27000,bq27200
SLUS556B–SEPTEMBER2004–REVISEDNOVEMBER2004
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
standardhdqserialcommunicationtiming(bq27000only)
t
(b)
Breaktiming190
t
(br)
Breakrecovery40
t
(cych)
Hostbitwindow190
t
(hw1)
hostsends10.550
t
(hw0)
Hostsends086145µs
t
(rsps)
bqJUNIORtohostresponse190320
t
(cycd)
bqJUNIORbitwindow190250
t
(dw1)
bqJUNIORsends13250
t
(dw0)
bqJUNIORsends080145
STANDARDI
2
cserialcommunicationtiming(bq27200only)
t
r
scl/sdarisetime1
t
f
scl/sdafalltime300
t
w(h)
sclpulsewidth(高)4
t
w(l)
sclpulsewidth(低)4.7
t
su(sta)
setupforrepeatedstart4.7
µs
t
d(sta)
StarttofirstfallingedgeofSCL4
t
su(dat)
Datasetuptime250
t
h(dat)
Dataholdtime300
t
su(停止)
Setuptimeforstop4
t
(buf)
busfreetimebetweenstopandstart4.7
f
(scl)
Clockfrequency100kHz
t
(buserr)
buserrortimeout14.518.8s
figure1.hdqbittimingdiagram
4
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