RFM42 Datasheet, PDF (67/110 Pages) –

RFM42/43
Register 12h. Temperature Sensor Calibration
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
tsrange[1:0]
entsoffs
entstrim
tstrim[3:0]
Type
R/w
R/w
R/w
R/w
Reset value = 00100000
Bit
7：6
5
4
3：0
Name
tsrange[1:0]
entsoffs
entstrim
tstrim[3:0]
Function
Temperature Sensor Range Selection.
(FS range is 0..1024 mV)
00: –40℃ .. 64℃ (full operating range), with 0.5℃ resolution (1 LSB in
the 8-bit ADC)
01: –40℃… 85℃, with 1℃ resolution (1 LSB in the 8-bit ADC)
11: 0 ℃ …85℃, with 0.5℃ resolution (1 LSB in the 8-bit ADC)
10: –40^o F … 216^o F, with 1 ^o F resolution (1 LSB in the 8-bit ADC)
Temperature Sensor Offset to Convert from K to ºC.
Temperature Sensor Trim Enable.
Temperature Sensor Trim Value.
Register 13h. Temperature Value Offset
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
tvoffs[7:0]
Type
R/W
Reset value = 00000000
Bit
7：0
Name
tvoffs[7:0]
Function
Temperature Value Offset.
This value is added to the measured temperature value. (MSB, tvoffs[8]: sign bit)
Note: If a new configuration is needed (e.g., for the WUT or the LDC), proper functionality is required.
The function must first be disabled, then the settings changed, then enabled back on.
67
Tel: [phone] Fax: [phone] E-mail: [e-mail] http://www.hoperf.com