Freescale Semiconductor FRDM-FXS-MULTI 데이터 시트
MPL3115A2
Sensors
Freescale Semiconductor, Inc.
Freescale Semiconductor, Inc.
27
7.8
Barometric Pressure Input
7.8.1
BAR_IN_MSB, BAR_IN_LSB (0x14, 0x15)
Barometric input for altitude calculations. Input is equivalent sea level pressure for measurement location.
Value is input in 2 Pa units.
Units are input as unsigned 16-bit integers. The default value is 101,326 Pa. The default value can be changed by writing to
this register
7.9
Pressure/Altitude Target
7.9.1
P_TGT_MSB, P_TGT_LSB (0x16, 0x17)
Altitude/Pressure target value. This value works in conjunction with the window value (P_WND_MSB and P_WND_LSB).
In Altitude mode, the register value is 16-bit 2’s complement value in meters.
In Pressure mode, the value is 16-bit unsigned value in 2 Pa units.
7.10
Temperature Target
7.10.1 T_TGT (0x18)
Temperature target value input in 2’s complement value in
°C.
Table 39. BAR_IN_MSB Register
7
6
5
4
3
2
1
0
R
BAR[15]
BAR[14]
BAR[13]
BAR[12]
BAR[11]
BAR[10]
BAR[9]
BAR[8]
W
Reset
1
1
0
0
0
1
0
1
Table 40. BAR_IN_LSB Register
7
6
5
4
3
2
1
0
R
BAR[7]
BAR[6]
BAR[5]
BAR[4]
BAR[3]
BAR[2]
BAR[1]
BAR[0]
W
Reset
1
1
1
0
0
1
1
1
Table 41. P_TGT_MSB Register
7
6
5
4
3
2
1
0
R
P_TGT15
P_TGT14
P_TGT13
P_TGT12
P_TGT11
P_TGT10
P_TGT9
P_TGT8
W
Reset
0
0
0
0
0
0
0
0
Table 42. P_TGT_LSB Register
7
6
5
4
3
2
1
0
R
P_TGT7
P_TGT6
P_TGT5
P_TGT4
P_TGT3
P_TGT2
P_TGT1
P_TGT0
W
Reset
0
0
0
0
0
0
0
0
Table 43. T_TGT Register
7
6
5
4
3
2
1
0
R
T_TGT7
T_TGT6
T_TGT5
T_TGT4
T_TGT3
T_TGT2
T_TGT1
T_TGT0
W
Reset
0
0
0
0
0
0
0
0