參數(shù)資料
型號： TWL2214CA
英文描述： High voltage fast-switching NPN power transistor
中文描述： 電源管理IC和鋰離子電池充電控制
文件頁數(shù)： 20/36頁
文件大小： 511K
代理商： TWL2214CA
SLVS321A
–
OCTOBER 2001
–
REVISED JANUARY 2002
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
I
2
C bus protocols (continued)
Master
Drives
ACK and Stop
Slave
Drives
the Data
NOTE: SLAVE = TWL2214CA
A6
A5
A0 R/W ACK
R7
1
0
R6
R0 ACK
A6
A5
A0 R/W ACK D7
D0 ACK
Slave Address
Register Address
Slave Address
Stop
Stop Start
CLK
DATA
Start
CE
Figure 11.
I
2
C Read From TWL2214CA Protocol B
I
2
C timing
tr
CLK
DATA
STA
STA
STO
t(BUF)
STO
th(STA)
th(DATA)
tsu(DATA)
tsu(STA)
th(STA)
tsu(STO)
t(LOW)
t(HIGH)
tf
MIN
MAX
UNIT
Clock frequency, fMAX
Clock high time, twH(HIGH)
Clock low time, twL(LOW)
DATA and CLK rise time, tR
DATA and CLK fall time, tF
Hold time (repeated) START condition (after this period the first clock pulse is generated), th(STA)
Setup time for repeated START condition, th(DATA)
Data input hold time, th(DATA)
Data input setup time, tsu(DATA)
STOP condition setup time, tsu(STO)
Bus free time, t(BUF)
400
kHz
600
ns
1300
ns
300
ns
300
ns
600
ns
600
ns
0
ns
100
ns
600
ns
1300
ns
Figure 12. I
2
C Bus Timing Diagram
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