TCM1617 Datasheet, PDF (9/14 Pages) Microchip Technology – SMBus Thermal Sensor with External Diode Input

SMBus Thermal Sensor with External Diode Input
TCM1617
Write Byte Format
S
ADDRESS
7 Bits
Slave Address
WR ACK COMMAND ACK DATA ACK P
8 Bits
8 Bits
Command Byte: selects
which register you are
writing to.
Data Byte: data goes
into the register set
by the command byte.
Read Byte Format
S ADDRESS WR ACK COMMAND ACK S ADDRESS RD ACK DATA NACK P
7 Bits
8 Bits
7 Bits
8 Bits
Slave Address
Command Byte: selects
which register you are
reading from.
Slave Address: repeated
due to change in data-
flow direction.
Data Byte: reads from
the register set by the
command byte.
Send Byte Format
S ADDRESS WR ACK COMMAND ACK P
7 Bits
8 Bits
Command Byte: sends
command with no data,
usually used for one-shot
command.
S = Start Condition
P = Stop Condition
Shaded = Slave Transmission
Receive Byte Format
S ADDRESS RD ACK DATA NACK P
7 Bits
8 Bits
Data Byte: reads data from
the register commanded by
the last Read Byte.
Figure 3. SMBus Protocols
 2001 Microchip Technology Inc. DS21485A
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TCM1617-1 2/5/99