DS1624 Datasheet, PDF (11/16 Pages) Dallas Semiconductor – Digital Thermometer and Memory

BUS MASTER
MODE
TX
DS1624
MODE
RX
DATA (MSB
FIRST)
NACK
TX
RX
STOP
{Command protocol for writing to EEPROM}
{Start here}
TX
RX
START
TX
RX
<cadr,0>
COMMENTS
Bus Master sends “NO
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
17h
Bus Master sends Access Memory
command protocol.
RX
TX
ACK
DS1624 generates acknowledge bit.
TX
RX
<madr> Bus Master sets the starting memory
address.
RX
TX
ACK
DS1624 generates acknowledge bit.
TX
RX
<data>
Bus Master sends the first byte of data.
RX
TX
ACK
DS1624 generates acknowledge bit.
TX
RX
<data>
Bus Master sends the second byte of data.
RX
TX
ACK
DS1624 generates acknowledge bit.
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TX
RX
<data>
Bus Master sends the n-th byte of data.
RX
TX
ACK
DS1624 generates acknowledge bit.
TX
RX
STOP
Bus Master initiates the STOP condition.
{Command protocol for reading from EEPROM}
{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
17h
Bus Master sends Access Memory
command protocol.
RX
TX
ACK
DS1624 generates acknowledge bit.
TX
RX
<madr> Bus Master sends the starting memory
address.
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 first byte of data.
TX
RX
ACK
Bus Master generates acknowledge bit.
DS1624
NOTES
1
3
2, 4
1
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