DS1922E
iButton High-Temperature Logger with
8KB Data-Log Memory
Step 2: Write the setup data to register page 1.
During the setup, the device needs to learn the follow-
ing information:
? Time and Date
? Sample Rate
? Alarm Thresholds
? Alarm Controls (Response to Conditional Search)
? General Mission Parameters (e.g., Channels to Log
and Logging Format, Rollover, Start Mode)
? Mission Start Delay
The following data sets up the DS1922E for a mission
that logs temperature using 8-bit format.
ADDRESS
0200h
0201h
0202h
0203h
0204h
0205h
0206h
0207h
0208h
0209h
020Ah
020Bh
020Ch
020Dh
020Eh
020Fh
0210h
0211h
0212h
0213h
0214h
0215h
0216h
0217h
DATA
00h
30h
15h
01h
04h
08h
0Ah
00h
08h
F2h
00h
FFh
FFh
FFh
FFh
FFh
02h
FCh
01h
C1h
FFh
FFh
5Ah
00h
EXAMPLE VALUES
15:30:00 hours
1st of April in 2008
Every 10 minutes (EHSS = 0)
18°C low
135°C high
(Don ’t care)
(Don ’t care)
Enable high alarm
Disabled
On (enabled), EHSS = 0 (low sample rate)
Normal start; no rollover; 8-bit temperature log
(Don ’t care)
90 minutes
FUNCTION
Time
Date
Sample rate
Temperature alarm thresholds
(Not applicable with DS1922E)
Clock through read-only registers
Temperature alarm control
(Not applicable with DS1922E)
RTC oscillator control, sample rate selection
General mission control
Clock through read-only registers
Mission start delay
0218h
Maxim Integrated
00h
41
相关PDF资料
DS1922L-F5# IBUTTON TEMP LOGGER
DS1923-F5# IBUTTON TEMP/HUMIDITY LOGGER F5
DS1961S-F3# IBUTTON EEPROM 1KBit F3
DS1963S-F5+ IBUTTON MONETARY SHA-1
DS1971-F3+ IBUTTON EEPROM 256KBIT F3
DS1972-F3+ IBUTTON EEPROM 1KBit F3
DS1973-F3+ IBUTTON EEPROM 4KBit F3
DS1977-F5# IBUTTON EEPROM 32KBit F5
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