Datasheet

DS1922L/DS1922T
Temperature Logger iButton with 8KB
Data-Log Memory
______________________________________________________________________________________ 17
ADDRESS BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0 FUNCTION ACCESS*
0200h 0 10 Seconds Single Seconds
0201h 0 10 Minutes Single Minutes
0202h 0 12/24
20 Hour
AM/PM
10 Hour Single Hours
0203h 0 0 10 Date Single Date
0204h CENT 0 0
10
Months
Single Months
0205h 10 Years Single Years
Real-
Time Clock
Registers
R/W R
0206h Low Byte
0207h 0 0 High Byte
Sample
Rate
R/W R
0208h Low Threshold
0209h High Threshold
Temperature
Alarms
R/W R
020Ah (No Function with the DS1922L/DS1922T)
020Bh (No Function with the DS1922L/DS1922T)
— R/W R
020Ch Low Byte 0 0 0 0 0
020Dh High Byte
Latest
Temperature
R R
020Eh (No Function with the DS1922L/DS1922T)
020Fh (No Function with the DS1922L/DS1922T)
— R R
0210h 0 0 0 0 0 0 ETHA ETLA
Temperature
Alarm
Enable
R/W R
0211h 1 1 1 1 1 1 0 0 — R/W R
0212h 0 0 0 0 0 0 EHSS EOSC RTC Control R/W R
0213h 1 1 SUTA RO (X) TLFS 0 ETL
Mission
Control
R/W R
0214h BOR 1 1 1 0 0 THF TLF Alarm Status R R
0215h 1 1 0 WFTA MEMCLR 0 MIP 0
General
Status
R R
0216h Low Byte
0217h Center Byte
0218h High Byte
Start
Delay
Counter
R/W R
Figure 6. Register Pages Map
* The left entry in the ACCESS column is valid between missions. The right entry shows the applicable access type while a
mission is in progress.