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DS1922E
iButton High-Temperature Logger with
8KB Data-Log Memory
ADDRESS
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
FUNCTION
ACCESS*
0219h
021Ah
0
0
10 Seconds
10 Minutes
Single Seconds
Single Minutes
021Bh
021Ch
021Dh
0
0
CENT
12/24
0
0
20 Hour
10 Hour
AM/PM
10 Date
10
0
Months
Single Hours
Single Date
Single Months
Mission
Timestamp
R
R
021Eh
10 Years
Single Years
021Fh
0220h
0221h
0222h
0223h
0224h
0225h
0226h
0227h
0228h
…
022Fh
0230h
…
0237h
(No Function; Reads 00h)
Low Byte
Center Byte
High Byte
Low Byte
Center Byte
High Byte
Configuration Code
EPW
First Byte
…
Eighth Byte
First Byte
…
Eighth Byte
—
Mission
Samples
Counter
Device
Samples
Counter
Flavor
PW Control
Read
Access
Password
Full
Access
Password
R
R
R
R
R/W
W
W
R
R
R
R
R
—
—
0238h
…
(No Function; All These Bytes Read 00h)
—
R
R
023Fh
*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.
Figure 6. DS1922E Register Pages Map (continued)
Maxim Integrated
11
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