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LTC4151IMS-1-TRPBF Datasheet(PDF) 9 Page - Linear Technology

Part # LTC4151IMS-1-TRPBF
Description  High Voltage I2C Current and Voltage Monitor
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4151IMS-1-TRPBF Datasheet(HTML) 9 Page - Linear Technology

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LTC4151/LTC4151-1
9
41511fa
SCL
SDA
START
CONDITION
STOP
CONDITION
ADDRESS
R/W
ACK
DATA
ACK
DATA
ACK
1 - 7
8
9
41511 F02
a6 - a0
b7 - b0
b7 - b0
1 - 7
8
9
1 - 7
8
9
P
S
Figure 2. General Data Transfer over I2C
I2C Interface
The LTC4151/LTC4151-1 feature an I2C-compatible in-
terface to provide access to six ADC data registers and
a control register for monitoring the measured voltages.
Figure 2 shows a general data transfer format using the
I2C. The LTC4151 and LTC4151-1 are read-write slave
devices and support SMBus Read Byte, Write Byte, Read
Word and Write Word commands. The devices also sup-
port Read Page and Write Page commands that allow one
to read or write more than two bytes of data. When using
the Read Page and Write Page commands, the host need
only to issue an initial register address and the internal
register address pointer automatically increments by 1
after each byte of data is read or written. After the register
address reaches 06h, it will be reset to 00h and continue
the increment. Upon a Stop condition, the register address
is reset to 00h. If desired, the Read Page and Write Page
support can be disabled by clearing control register bit
G3. The data formats for the above commands are shown
in Figures 3 to 8.
APPLICATIONS INFORMATION
Figure 3. LTC4151 Serial Bus SDA Write Byte Protocol
Figure 4. LTC4151 Serial Bus SDA Write Word Protocol
Figure 5. LTC4151 Serial Bus SDA Write Page Protocol
S
ADDRESS
1 1 0 a3:a0
FROM MASTER TO SLAVE
FROM SLAVE TO MASTER
A: ACKNOWLEDGE (LOW)
A: NOT ACKNOWLEDGE (HIGH)
R: READ BIT (HIGH)
COMMAND
DATA
X X X X X b2:b0
0
W
00
0
b7:b0
A
A
AP
41511 F03
W: WRITE BIT (LOW)
S: START CONDITION
P: STOP CONDITION
S
ADDRESS
1 1 0 a3:a0
COMMAND
DATA
DATA
X X X X X b2:b0
0
W
00
0
0
41511 F04
b7:b0
b7:b0
A
A
A
AP
S
ADDRESS
1 1 0 a3:a0
COMMAND
0
X X X X X b2:b0
0
W
00
41511 F05
A
A
AP
b7:b0
DATA
0
A
b7:b0
DATA
0
A
...
...
b7:b0
DATA
Figure 6. LTC4151 Serial Bus SDA Read Byte Protocol
S
ADDRESS
1 1 0 a3:a0
1 1 0 a3:a0 1 0
COMMAND
S
ADDRESS
R A
b7:b0 1
DATA
X X X X X b2:b0
0
W
00
41511 F06
A
A
A P
Figure 7. LTC4151 Serial Bus SDA Read Word Protocol
Figure 8. LTC4151 Serial Bus SDA Read Page Protocol
S
ADDRESS
1 1 0 a3:a0
1 1 0 a3:a0 1 0
COMMAND
S
ADDRESS
R A
b7:b0
1
DATA
X X X X X b2:b0
0
W
00
41511 F07
A
0
A
b7:b0
DATA
A
A P
S
ADDRESS
1 1 0 a3:a0
1 1 0 a3:a0 1 0
COMMAND
S
ADDRESS
R A
b7:b0
1
DATA
X X X X X b2:b0
0
W
00
41511 F08
A
0
A
b7:b0
DATA
A
A P
...
...
b7:b0
DATA


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