LPS001WP Datasheet, PDF (12/30 Pages) STMicroelectronics – MEMS pressure sensor 300-1100 mbar absolute digital output barometer

Application hints
LPS001WP
5.2.1 Reduced power consumption procedure
1. LPS001WP power down and low resolution mode
a) Write CTRL_REG1 (20h) <= ‘1000xxxx’b
or
b) Write CTRL_REG1 (20h) <= ‘0000xxxx’b (normal resolution)
2. LPS001WP wake up
a) Write CTRL_REG1 (20h) <= ‘1100xxxx’b
or
b) Write CTRL_REG1 (20h) <= ‘0100xxxx’b (normal resolution)
Obsolete ^{Product(s) - Obsolete Product(s) Note:}
3. Wait 80 ms - settling time
4. Output read
a) Read PRESS_OUT_H (29h)
b) Read PRESS_OUT_L (28h)
c) Read TEMP_OUT_H (2Bh)
d) Read TEMP_OUT_L (2Ah)
5. LPS001WP power down and low power mode
a) Write CTRL_REG1 (20h) <= ‘1000xxxx’b
or
b) Write CTRL_REG1 (20h) <= ‘0000xxxx’b (normal resolution)
Power down and normal mode configuration: CTRL_REG1 (20h) <= ‘0000xxxx’b
Table 6.
Power consumption @ 1 Hz and @ 4 Hz ODR
Power consumption
Condition
Min. Typ.⁽¹⁾ Max. Unit
Idd Supply current
Low resolution
21
ODR = 1 Hz
Normal resolution
75
ODR = 4 Hz
µA
Normal resolution
40
ODR = 1 Hz
Normal resolution
150
ODR = 4 Hz
1. Typical specifications are not guaranteed.
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Doc ID 18171 Rev 1