LPS22CH datasheet(43/55 Pages) STMICROELECTRONICS

Part #	LPS22CH

Description	High-performance MEMS nano pressure sensor: 260-1260 hPa absolute digital output barometer

PDF	55 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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LPS22CH

9.8

CTRL_REG3 (12h)

Control register 3 - INT_DRDY pin control register (R/W)

Figure 23. Interrupt events on INT_DRDY pin

76543210

INT_F_FULL

INT_F_WTM

INT_F_OVR

DRDY

INT_S1

INT_S0

INT_F_FULL

FIFO full flag on INT_DRDY pin. Default value: 0

(0: FIFO empty; 1: FIFO full - 128 unread samples)

INT_F_WTM

FIFO threshold (watermark) status on INT_DRDY pin. Default value: 0

(0: FIFO is lower than FTH level; 1: FIFO is equal to or higher than FTH level)

INT_F_OVR

FIFO overrun status on INT_DRDY pin. Default value: 0

(0: not overwritten; 1: at least one sample in the FIFO has been overwritten)

DRDY

Data-ready signal on INT_DRDY pin. Default value: 0

(0: disable; 1: enable)

INT_S[1:0]

Data signal on INT_DRDY pin control bits. Default value: 00

Refer to Table 20.

Table 20. Interrupt configurations

INT_S1 INT_S0

INT_DRDY pin configuration

Data signal (in order of priority: DRDY or INT_F_WTM or INT_F_OVR or

INT_F_FULL)

Pressure high (P_high)

Pressure low (P_low)

Pressure low OR high

LPS22CH Datasheet(PDF) 43 Page - STMicroelectronics