參數(shù)資料
型號(hào): ISL90840WIV2027
廠商: INTERSIL CORP
元件分類: 數(shù)字電位計(jì)
英文描述: Low Noise, Low Power I2C Bus, 256 Taps
中文描述: QUAD 10K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO20
封裝: TSSOP-20
文件頁數(shù): 10/12頁
文件大小: 1127K
代理商: ISL90840WIV2027
10
FN8086.0
July 27, 2005
SDA
SCL
START
DATA
STABLE
DATA
CHANGE
STOP
DATA
STABLE
FIGURE 15. VALID DATA CHANGES, START, AND STOP CONDITIONS
SDA OUTPUT FROM
TRANSMITTER
SDA OUTPUT FROM
RECEIVER
8
1
9
START
ACK
SCL FROM
MASTER
HIGH IMPEDANCE
HIGH IMPEDANCE
FIGURE 16. ACKNOWLEDGE RESPONSE FROM RECEIVER
S
T
A
R
T
S
T
O
P
IDENTIFICATION
BYTE
ADDRESS
BYTE
DATA
BYTE
A
C
K
SIGNALS FROM
THE MASTER
SIGNALS FROM
THE ISL90840
A
C
K
0
0
0
1
1
A
C
K
WRITE
SIGNAL AT SDA
0 0 0 0
A0
A1
A2
0 0 0
FIGURE 17. BYTE WRITE SEQUENCE
SIGNALS
FROM THE
MASTER
SIGNALS FROM
THE SLAVE
SIGNAL AT SDA
S
T
A
R
T
IDENTIFICATION
BYTE WITH
R/W=0
ADDRESS
BYTE
A
C
K
A
C
K
0
0
0
1
1
S
T
O
P
A
C
K
0
1
0
1
1
IDENTIFICATION
BYTE WITH
R/W=1
A
C
K
S
T
A
R
T
LAST READ
DATA BYTE
FIRST READ
DATA BYTE
A
C
K
0
0 0 0
0 0
A0
A1
A2
A0
A1
A2
FIGURE 18. READ SEQUENCE
ISL90840
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