Datasheet

Command-Specific 1-Wire Communication Protocol—Legend
1-Wire Digital Thermometer with
Sequence Detect and PIO
DS28EA00
26 Maxim Integrated
SYMBOL DESCRIPTION
RST 1-Wire reset pulse generated by master
PD 1-Wire presence pulse generated by slave
SELECT Command and data to satisfy the ROM function protocol
SKIPR ROM function command: “Skip ROM”
CDRR ROM function command: “Conditional Read ROM”
WSP Command: “Write Scratchpad”
RSP Command: “Read Scratchpad”
CPSP Command: “Copy Scratchpad”
CTEMP Command: “Convert Temperature”
RPM Command: “Read Power Mode”
RCLE Command: “Recall EEPROM”
PIOR Command: “PIO Access Read”
PIOW Command: “PIO Access Write”
CHAIN Command : “Chain”
<n Bytes> Transfer of n bytes
CRC Transfer of a CRC byte
<xxh> Transfer of a specific byte value “xx” (hexadecimal notation)
00 Loop Indefinite loop where the master reads 00 bytes
FF Loop Indefinite loop where the master reads FF bytes
AA Loop Indefinite loop where the master reads AA bytes
xx Loop Indefinite loop where the slave transmits the inverted invalid control byte
CONVERSION A temperature conversion takes place; activity on the 1-Wire bus is permitted only with local V
DD
supply
PROGRAMMING Data transfer to backup EEPROM; activity on the 1-Wire bus is permitted only with local V
DD
supply
Command-Specific 1-Wire Communication Protocol—Color Codes
Master-to-Slave Slave-to-Master Programming Conversion