DS1624 Datasheet, PDF (10/16 Pages) Dallas Semiconductor – Digital Thermometer and Memory

DS1624
During the programming cycle the DS1624 will not acknowledge any further accesses to the device until
the programming cycle is complete (approximately 10 ms).
MEMORY FUNCTION EXAMPLE
BUS MASTER DS1624 DATA (MSB
COMMENTS
MODE
MODE
FIRST)
{Command protocol for configuration register}
{Start here}
TX
RX
START Bus Master Initiates a Start condition.
TX
RX
<cadr,0> Bus Master sends DS1624 address;
RX
TX
ACK
TX
RX
ACh
RX
TX
ACK
TX
RX
00h
RX
TX
ACK
TX
RX
STOP
{Command protocol for Start Convert T}
{Start here}
TX
RX
START
TX
RX
<cadr,0>
R/ W =”0”;
DS1624 generates acknowledge bit.
Bus Master sends Access Config
command protocol.
DS1624 generates acknowledge bit.
Bus Master sets up DS1624 for continuous
conversion.
DS1624 generates acknowledge bit.
Bus Master initiates the STOP condition.
Bus Master initiates a Start condition.
Bus Master sends DS1624 address;
R/ W =0;
RX
TX
ACK
DS1624 generates acknowledge bit.
TX
RX
EEh
Bus Master sends Start Convert T
command protocol.
RX
TX
ACK
DS1624 generates acknowledge bit.
TX
RX
STOP
Bus Master initiates the STOP condition.
{Command protocol for reading the Temperature}
{Start here}
TX
RX
START Bus Master initiates a Start condition.
TX
RX
<cadr,0> Bus Master sends DS1624 address;
R/ W =0;
RX
TX
ACK
DS1624 generates acknowledge bit.
TX
RX
AAh
Bus Master sends Read Temp command
protocol.
RX
TX
ACK
DS1624 generates acknowledge bit.
TX
RX
START Bus Master initiates a Repeated Start
condition.
TX
RX
<cadr,1> Bus Master sends DS1624 address;
R/ W =1;
RX
TX
ACK
DS1624 generates acknowledge bit.
RX
TX
<data>
DS1624 sends the MSB byte of
Temperature.
TX
RX
ACK
Bus Master generates acknowledge bit.
RX
TX
<data>
DS1624 sends the LSB byte of
Temperature.
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NOTES
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