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AN3308 bảng dữ liệu(PDF) 18 Page - STMicroelectronics

tên linh kiện AN3308
Giải thích chi tiết về linh kiện  This document describes the low-voltage 3-axis digital output linear MEMS accelerometer provided in an LGA package
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Interrupt generation
AN3308
18/52
Doc ID 18198 Rev 1
5
Interrupt generation
The LIS3DH interrupts signal can behave as free-fall, wake-up, 6D and 4D orientation
detection, and click detection. Those signals can be driven to the two interrupt pins (INT1
and INT2).
5.1
Interrupt pin configuration
The device is provided with two pins which can be activated to generate either the data-
ready or the interrupt signals. The functionality of the pins is selected through
CTRL_REG3(22h) and CTRL_REG6(25h). Refer to Table 10 and Table 11 and to the block
diagram given in Figure 6.
Table 10.
CTRL_REG3 register
I1_CLICK
I1_INT1
0
I1_DRDY1
-
I1_WTM
I1_OVERRUN
-
Table 11.
CTRL_REG3 description
I1_CLICK
CLICK interrupt on INT1. Default value 0.
(0: disable; 1: enable)
I1_INT1
Interrupt generator 1 on INT1 pin. Default value 0.
(0: disable; 1: enable)
I1_DRDY1
DRDY1 interrupt on INT1. Default value 0.
(0: disable; 1: enable)
I1_WTM
FIFO watermark interrupt on INT1. Default value 0.
(0: disable; 1: enable)
I1_OVERRUN
FIFO overrun interrupt on INT1. Default value 0.
(0: disable; 1: enable)
Table 12.
CTRL_REG6 register
I2_CLICKen
I2_INT1
0
BOOT_I2
0
-
H_LACTIVE
-
Table 13.
CTRL_REG6 register
I2_CLICKen
CLICK interrupt on INT2. Default value 0.
(0: disable; 1: enable)
I2_INT2
Interrupt generator 1 on INT2 pin. Default value 0.
(0: disable; 1: enable)
BOOT_I2
BOOT status on INT2. Default value 0.
(0: disable; 1: enable)
HL_ACTIVE
0: interrupt active high; 1: interrupt active low



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