DS1922E Maxim, DS1922E Datasheet - Page 3
![no-image](/images/no-image-200.jpg)
DS1922E
Manufacturer Part Number
DS1922E
Description
The DS1922E temperature logger iButton is a rugged, self-sufficient system that measures temperature and records the result in a protected memory section
Manufacturer
Maxim
Datasheet
1.DS1922E.pdf
(44 pages)
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ELECTRICAL CHARACTERISTICS (continued)
(V
Presence-Detect Fall Time
(Note 13)
Presence-Detect Low Time
Presence-Detect Sample Time
(Note 2)
I/O PIN 1-Wire WRITE
Write-Zero Low Time
(Notes 2, 14)
Write-One Low Time
(Notes 2, 14)
I/O PIN 1-Wire READ
Read Low Time
(Notes 2, 15)
Read Sample Time
(Notes 2, 15)
REAL-TIME CLOCK (RTC)
Accuracy
Frequency Deviation
TEMPERATURE CONVERTER
Conversion Time
(Note 16)
Thermal Response Time
Constant (Note 17)
Conversion Error (Notes 18, 19)
Temperature Cycles
Operating Lifetime
PUP
= 3.0V to 5.25V.)
PARAMETER
High-Temperature Logger iButton with 8KB
_______________________________________________________________________________________
SYMBOL
t
N
t
t
CONV
t
t
t
t
t
RESP
MSP
MSR
FPD
W0L
W1L
LIFE
PDL
t
TCY
RL
F
Standard speed, V
Standard speed
Overdrive speed
Standard speed, V
Standard speed (Note 12)
Overdrive speed, V
Overdrive speed (Note 12)
Standard speed, V
Standard speed
Overdrive speed
Standard speed
Overdrive speed, V
Overdrive speed (Note 12)
Standard speed
Overdrive speed
Standard speed
Overdrive speed
Standard speed
Overdrive speed
0°C to +125°C
8-bit mode
16-bit mode (11 bits)
iButton package
+15°C to +110°C (Note 20)
+110°C to +140°C
Cycle = ramp from +25°C to > +125°C
and back to +25°C (Note 21)
Temperature > +125°C (Note 21)
CONDITIONS
PUP
PUP
PUP
PUP
PUP
> 4.5V
> 4.5V
> 4.5V
> 4.5V (Note 12)
> 4.5V (Note 12)
Data-Log Memory
t
t
RL
RL
0.15
71.5
See the RTC Accuracy
-600
MIN
240
-1.5
1.5
1.5
7.5
60
60
65
60
30
7
7
8
6
5
1
5
1
+
+
graph
TYP
130
±7
1.95 -
15 -
MAX
1.95
1.95
+1.5
+60
240
287
120
600
300
300
24
28
75
75
12
12
15
15
75
5
8
1
9
Cycles
UNITS
Month
Hours
Min/
ppm
ms
μs
μs
μs
μs
μs
μs
μs
°C
s
3
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