DS1922T-F5 MAXIM [Maxim Integrated Products], DS1922T-F5 Datasheet - Page 44

• Manufacturer Part Number: DS1922T-F5
• Description: Temperature Logger iButton With 8kB Datalog Memory
• Manufacturer: MAXIM [Maxim Integrated Products]

COMMAND-SPECIFIC 1-Wire COMMUNICATION PROTOCOL—LEGEND
COMMAND-SPECIFIC 1-Wire COMMUNICATION PROTOCOL—COLOR CODES
WRITE SCRATCHPAD, REACHING THE END OF THE SCRATCHPAD (CANNOT FAIL)
READ SCRATCHPAD (CANNOT FAIL)
COPY SCRATCHPAD WITH PASSWORD (SUCCESS)
Master to slave
RST
RST
RST
<data to EOM>
<data to EOS>
<data to EOP>
<PW/dummy>
<32 bytes>
SYMBOL
CRC16\
AA loop
FF loop
TA-E/S
<data>
Select
RMC
CPS
PD
PD
PD
RST
STP
FFh
WS
CM
SM
PD
RS
FC
TA
Select
Select
Select
Slave to master
DESCRIPTION
1-Wire reset pulse generated by master
1-Wire presence pulse generated by slave
Command and data to satisfy the ROM function protocol
Command "Write Scratchpad"
Command "Read Scratchpad"
Command "Copy Scratchpad with Password"
Command "Read Memory with Password & CRC"
Command "Clear Memory with Password "
Command "Forced Conversion"
Command "Start Mission with Password"
Command "Stop Mission with Password"
Target Address TA1, TA2
Target Address TA1, TA2 with E/S byte
Transfer of as many data bytes as are needed to reach the scratchpad offset 1Fh
Transfer of as many data bytes as are needed to reach the end of a memory page
Transfer of as many data bytes as are needed to reach the end of the datalog memory
Transfer of 8 bytes that either represent a valid password or acceptable dummy data
Transfer of 32 bytes
Transfer of an undetermined amount of data
Transmission of one byte FFh
Transfer of an inverted CRC16
Indefinite loop where the master reads FF bytes
Indefinite loop where the master reads AA bytes
WS
RS
CPS
TA-E/S
TA
TA-E/S
<data to EOS>
<data to EOS>
<PW/dummy>
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CRC16\
CRC16\
AA loop
FF loop
FF loop
DS1922L/DS1922T