LPS25H Datasheet, PDF (28/45 Pages) STMicroelectronics – Embedded temperature compensation

Register description
LPS25H
ONE_SHOT bit is used to start a new conversion when ODR2..0 bits in CTRL_REG1 are
set to “000”. Write ‘1’ in ONE_SHOT to trigger a single measurement of pressure and
temperature. Once the measurement is done, ONE_SHOT bit will self-clear and the new
data are available in the output registers, and the STATUS_REG bits are updated.
7.8
CTRL_REG3
7
6
5
INT_H_L
PP_OD
4
3
Reserved
Interrupt control
2
1
0
INT1_S2
INT1_S1
Address:
22h (R/W)
Reset:
00h
Description:
Control register.
[7] INT_H_L: Interrupt active high, low. Default value: 0
(0: active high; 1: active low)
[6] PP_OD: Push-pull/open drain selection on interrupt pads. Default value: 0
(0: push-pull; 1: open drain)
[5:2] Reserved
[1:0] INT1_S2, INT1_S1: data signal on INT1 pad control bits. Default value: 00
(see Table 19)
INT1_S2
0
0
1
1
Table 19. Interrupt configurations
INT1_S1
INT1 pin
0
Data signal (see CTRL_REG4)
1
Pressure high (P_high)
0
Pressure low (P_low)
1
Pressure low OR high
The device features one fully-programmable interrupt sources (INT1) that can be configured
to trigger different pressure events. Figure 12 shows the block diagram of the interrupt
generation block and output pressure data.
The device may also be configured to generate, through interrupt pins, a Data Ready signal
(Drdy) which indicates when a new measured pressure data is available, thus simplifying
data synchronization in digital systems or to optimize the system power consumption.
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