LIS331DLTR(2007) Ver la hoja de datos (PDF) - STMicroelectronics

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LIS331DLTR
(Rev.:2007)

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

STMicroelectronics 

Register description

LIS331DL

7.15 FF_WU_SRC_2 (35h)

Table 34. FF_WU_SRC_2 register

--

IA

ZH

ZL

YH

YL

XH

XL

Table 35.

IA

ZH

ZL

YH

YL

XH

XL

FF_WU_SRC_2 descrption

Interrupt Active. Default value: 0

(0: no interrupt has been generated;

1: one or more interrupt events have been generated)

Z High. Default value: 0

(0: no interrupt; 1: ZH event has occurred)

Z Low. Default value: 0

(0: no interrupt; 1: ZL event has occurred)

Y High. Default value: 0

(0: no interrupt; 1: YH event has occurred)

Y Low. Default value: 0

(0: no interrupt; 1: YL event has occurred)

X High. Default value: 0

(0: no interrupt; 1: XH event has occurred)

X Low. Default value: 0

(0: no interrupt; 1: XL event has occurred)

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

Reading at this address clears FF_WU_SRC_2 register and the FF_WU_2 interrupt and

allows the refreshment of data in the FF_WU_SRC_2 register if the latched option was

chosen.

7.16

FF_WU_THS_2 (36h)

Table 36. FF_WU_THS_2 register

DCRM

THS6

THS5

THS4

THS3

THS2

THS1

THS0

Table 37. FF_WU_THS_2 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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