AN3308 datasheet(34/52 Pages) STMICROELECTRONICS

Part #	AN3308

Description	This document describes the low-voltage 3-axis digital output linear MEMS accelerometer provided in an LGA package

PDF	52 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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Click and double click recognition

AN3308

34/52

Doc ID 18198 Rev 1

8.3.3

TAP_THS (3Ah)

1 LSB = full scale/128.

THS6 through THS0 define the threshold which is used by the system to start the click

detection procedure. The threshold value is expressed over 6 bits as an unsigned number.

8.3.4

TIME_LIMIT (3Bh)

1 LSB = 1/ODR.

TLI7 through TLI0 define the maximum time interval that can elapse between the start of the

click detection procedure (the acceleration on the selected channel exceeds the

programmed threshold) and when the acceleration goes back below the threshold.

8.3.5

TIME_LATENCY (3Ch)

1 LSB = 1/ODR.

TLA7 through TLA0 define the time interval that starts after the first click detection where the

click detection procedure is disabled, in cases where the device is configured for double

click detection.

Table 23.

TAP_THS register

THS6

THS5

THS4

THS3

THS2

THS1

THS0

Table 24.

TAP_SRC description

THS6-THS0

Tap-Tap threshold. Default value: 000 0000

Table 25.

TIME_LIMIT register

TLI6

TLI5

TLI4

TLI3

TLI2

TLI1

TLI0

Table 26.

TIME_LIMIT register

TLI7-TLI0

Tap-Tap Time Limit. Default value: 000 0000

Table 27.

TIME_LATENCY register

TLA7

TLA6

TLA5

TLA4

TLA3

TLA2

TLA1

TLA0

Table 28.

TIME_LATENCY description

TLA7-TLA0

Tap-Tap Time Latency. Default value: 000 0000

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