DS1923 Maxim, DS1923 Datasheet - Page 27

• Manufacturer Part Number: DS1923
• Description: The DS1923 temperature/humidity logger iButton® is a rugged, self-sufficient system that measures temperature and/or humidity and records the result in a protected memory section
• Manufacturer: Maxim

Figure 7a. 1-Channel Logging
Figure 7b. 2-Channel Logging, Equal Resolution
Figure 7c. 2-Channel Logging, Different Resolution
Hygrochron Temperature/Humidity Logger
ETL = 1; EHL = 0 OR ETL = 0; EHL = 1
HUMIDITY DATA
HUMIDITY DATA
HUMIDITY DATA
16-BIT ENTRIES
TEMPERATURE
TEMPERATURE
TEMPERATURE
8-BIT ENTRIES
8-BIT ENTRIES
8-BIT ENTRIES
8-BIT ENTRIES
______________________________________________________________________________________
(NOT USED)
TLFS = 0; HLFS = 1
8192
4096
4096
2560
2560
TLFS = HLFS = 0
OR
TLFS = HLFS = 0
ETL = EHL = 1
ETL = EHL = 1
iButton with 8KB Data-Log Memory
1000h
2FFFh
1000h
1FFFh
2000h
2FFFh
1000h
19FFh
1A00h
2DFFh
2E00h
2FFFh
ETL = 1; EHL = 0 OR ETL = 0; EHL = 1
HUMIDITY DATA
HUMIDITY DATA
HUMIDITY DATA
16-BIT ENTRIES
16-BIT ENTRIES
16-BIT ENTRIES
16-BIT ENTRIES
TEMPERATURE
TEMPERATURE
TEMPERATURE
8-BIT ENTRIES
(NOT USED)
TLFS = 1; HLFS = 0
4096
2048
2048
2560
2560
TLFS = HLFS = 1
OR
TLFS = HLFS = 1
ETL = EHL = 1
ETL = EHL = 1
2DFFh
1000h
2FFFh
1000h
1FFFh
2000h
2FFFh
1000h
23FFh
2400h
2E00h
2FFFh
WITH 16-BIT FORMAT, THE MOST SIGNIFICANT
BYTE IS STORED AT THE LOWER ADDRESS.
WITH 16-BIT FORMAT, THE MOST SIGNIFICANT
BYTE IS STORED AT THE LOWER ADDRESS.
WITH 16-BIT FORMAT, THE MOST SIGNIFICANT
BYTE IS STORED AT THE LOWER ADDRESS.
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