DS1923
iButton Hygrochron Temperature/Humidity
Logger with 8KB Data-Log Memory
ETL = 1; EHL = 0 OR ETL = 0; EHL = 1
TLFS = HLFS = 0
ETL = 1; EHL = 0 OR ETL = 0; EHL = 1
TLFS = HLFS = 1
8192
8-BIT ENTRIES
TEMPERATURE
OR
HUMIDITY DATA
1000h
2FFFh
4096
16-BIT ENTRIES
TEMPERATURE
OR
HUMIDITY DATA
1000h
2FFFh
WITH 16-BIT FORMAT, THE MOST SIGNIFICANT
BYTE IS STORED AT THE LOWER ADDRESS.
Figure 7a. 1-Channel Logging
ETL = EHL = 1
TLFS = HLFS = 0
TEMPERATURE
4096
8-BIT ENTRIES
1000h
ETL = EHL = 1
TLFS = HLFS = 1
TEMPERATURE
2048
16-BIT ENTRIES
1000h
1FFFh
2000h
HUMIDITY DATA
4096
8-BIT ENTRIES
2FFFh
Figure 7b. 2-Channel Logging, Equal Resolution
ETL = EHL = 1
TLFS = 0; HLFS = 1
HUMIDITY DATA
2048
16-BIT ENTRIES
ETL = EHL = 1
TLFS = 1; HLFS = 0
1FFFh
2000h
2FFFh
WITH 16-BIT FORMAT, THE MOST SIGNIFICANT
BYTE IS STORED AT THE LOWER ADDRESS.
TEMPERATURE
2560
8-BIT ENTRIES
1000h
19FFh
1A00h
TEMPERATURE
2560
16-BIT ENTRIES
1000h
HUMIDITY DATA
2560
16-BIT ENTRIES
HUMIDITY DATA
23FFh
2400h
WITH 16-BIT FORMAT, THE MOST SIGNIFICANT
BYTE IS STORED AT THE LOWER ADDRESS.
2560
2DFFh
8-BIT ENTRIES
2DFFh
2E00h
(NOT USED)
2FFFh
Figure 7c. 2-Channel Logging, Different Resolution
Maxim Integrated
(NOT USED)
2E00h
2FFFh
27
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