DS1923(2009) Просмотр технического описания (PDF) - Maxim Integrated
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DS1923
(Rev.:2009)
(Rev.:2009)
Maxim Integrated
DS1923 Datasheet PDF : 55 Pages
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Hygrochron Temperature/Humidity Logger
iButton with 8KB Data-Log Memory
ELECTRICAL CHARACTERISTICS (continued)
(VPUP = +3.0V to +5.25V, TA = -20°C to +85°C.)
PARAMETER
SYMBOL
CONDITIONS
Presence-Detect Low Time
Standard speed, VPUP > 4.5V
Standard speed (Note 11)
tPDL
Overdrive speed, VPUP > 4.5V (Note 11)
Overdrive speed (Note 11)
Presence-Detect Sample Time
(Note 1)
tMSP
Standard speed, VPUP > 4.5V
Standard speed
Overdrive speed
IO PIN: 1-Wire WRITE
Write-Zero Low Time
(Note 1)
Standard speed
tW0L Overdrive speed, VPUP > 4.5V (Note 11)
Overdrive speed (Note 11)
Write-One Low Time
(Notes 1, 13)
Standard speed
tW1L
Overdrive speed
IO PIN: 1-Wire READ
Read Low Time
(Notes 1, 14)
Standard speed
tRL
Overdrive speed
Read Sample Time
(Notes 1, 14)
tMSR
Standard speed
Overdrive speed
REAL-TIME CLOCK (RTC)
Accuracy
+25°C
Frequency Deviation
F
TEMPERATURE CONVERTER
Conversion Time
tCONV
Thermal Response Time
Constant
RESP
Conversion Error Without
Software Correction
Conversion Error with Software
Correction
HUMIDITY CONVERTER (Note 20)
Humidity Response Time
Constant
RH
-20°C to +85°C
8-bit mode (Note 15)
16-bit mode (11 bits)
iButton package (Note 16)
(Notes 15, 17, 18, 19)
(Notes 15, 17, 18, 19)
Slow moving air (Note 21)
RH Resolution
(Note 22)
RH Range
(Note 23)
MIN TYP MAX UNITS
60
240
60
287
μs
7
24
7
28
65
75
71.5
75
μs
8
9
60
120
6
12
μs
7.5
12
5
15 -
μs
1
1.95 -
5
1
tRL +
tRL +
15 -
μs
1.95 -
15
μs
1.95
-3
-300
+3
Min/
Month
+60 ppm
30
75
ms
240
600
130
s
See the Temperature
°C
Accuracy graph
See the Temperature
Accuracy graph
°C
30
s
8
12
12
Bits
0.64 0.04 0.04 %RH
0
100 %RH
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