LIS331DL Просмотр технического описания (PDF) - STMicroelectronics

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LIS331DL

MEMS motion sensor 3-axis - ±2g/±8g smart digital output “nano” accelerometer

STMicroelectronics 

LIS331DL

Register description

7.11 FF_WU_SRC_1 (31h)

Table 32. FF_WU_SRC_1 register

--

IA

ZH

ZL

YH

YL

XH

XL

Table 33. FF_WU_SRC_1 description

Interrupt Active. Default value: 0

IA

(0: no interrupt has been generated; 1: one or more interrupts have been generated)

Z High. Default value: 0

ZH

(0: no interrupt, 1: Z High event has occurred)

Z Low. Default value: 0

ZL

(0: no interrupt; 1: Z Low event has occurred)

Y High. Default value: 0

YH

(0: no interrupt, 1: Y High event has occurred)

Y Low. Default value: 0

YL

(0: no interrupt, 1: Y Low event has occurred)

X High. Default value: 0

XH

(0: no interrupt, 1: X High event has occurred)

X Low. Default value: 0

XL

(0: no interrupt, 1: X Low event has occurred)

Free-fall and wake-up source register. Read only register.

Reading at this address clears FF_WU_SRC_1 register and the FF, WU 1 interrupt and

allows the refreshment of data in the FF_WU_SRC_1 register if the latched option was

chosen.

7.12

FF_WU_THS_1 (32h)

Table 34. FF_WU_THS_1 register

DCRM

THS6

THS5

THS4

THS3

THS2

THS1

THS0

Table 35. FF_WU_THS_1 description

DCRM

Resetting mode selection. Default value: 0

(0: counter reset; 1: counter decremented)

THS6, THS0 Free-fall / wake-up Threshold: default value: 000 0000

Most significant bit (DCRM) is used to select the resetting mode of the duration counter. If

DCRM=0 counter is reset when the interrupt is no more active else if DCRM=1 duration

counter is decremented.

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