Rf22 – Rainbow Electronics RF22 User Manual
Page 63
RF22
Version: 0.1 Date: 12/23/2008
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com
63
Reset value = xxxxxxxx
Bit
Name
Function
7:0
adc[7:0]
Internal 8 bit ADC Output Value.
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
Name
Function
7:6
tsrange[1:0]
Temperature Sensor Range Selection.
(FS range is 0..1024 mV)
00: -40
o
C~64
o
C (full operating range), with 0.5
o
C resolution (1 LSB in the 8 bit ADC)
01: -40
o
C~85
o
C, with 1
o
C resolution (1 LSB in the 8 bit ADC)
11: 0
o
C ~85
o
C, with 0.5
o
C 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)
5
entsoffs
Temperature Sensor Offset to Convert from K to ºC.
4
entstrim
Temperature Sensor Trim Enable.
3:0
tstrim[3:0]
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
Name
Function
7:0
tvoffs[7:0]
Temperature Value Offset.
This value is added to the measured temperature value. (MSB, tvoffs[8]: sign bit)
Register 14h. Wake-Up Timer Period 1
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name Reserved
wtr[3:0]
wtd[1:0]
Type
R/W
R/W
R/W
Reset value = xx000000
Bit
Name
Function
7:6
Reserved
Reserved.
5:2
wtr[3:0]
Wake Up Timer Exponent (R) Value*.
1:0
wtd[3:0]
Wake Up Timer Exponent (D) Value*.
*Note: The period of the wake-up timer can be calculated as T
WUT
= (32 x M x2
R-D
) / 32.768 ms.
Register 15h. Wake-Up Timer Period 2
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
wtm[15:8]
Type R/W
Reset value = 00000000
Bit
Name
Function
7:0
wtm[15:8]
Wake Up Timer Mantissa (M) Value*.
*Note: The period of the wake-up timer can be calculated as T
WUT
= (32 x M x2
R-D
) / 32.768 ms.