ASM330LXH datasheet(26/56 Pages) STMICROELECTRONICS

部件名	ASM330LXH

功能描述	Automotive inertial module: 3D accelerometer and 3D gyroscope

PDF	56 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

26 / 56 page

Digital main block

ASM330LXH

26/56

DocID027411 Rev 3

3.3.2

Edge-sensitive trigger

An edge-sensitive trigger can be enabled by setting the EXTRen bit to ‘1’ in CTRL6_G (15h)

while the LVLen bit in CTRL6_G (15h) and the IMPen bit in CTRL6_G (15h) have to be set

to ‘0’.

Once enabled, FIFO is filled with the pitch, roll and yaw data on the rising edge of the G_EN

input signal. When the ODR selected is 800 Hz, the maximum G_EN sampling frequency is

fG_EN =1/TG_EN = 400 Hz.

Figure 15. Edge-sensitive trigger

3.3.3

Impulse-sensitive trigger

An impulse-sensitive trigger can be enabled by setting the LVLen bit to ‘1’ in CTRL6_G

(15h) and the IMPen bit in CTRL6_G (15h) while the EXTRen bit in CTRL6_G (15h) has to

be set to ‘0’.

If the duration of the G_EN pulse is shorter than the selected ODR, the impulse-sensitive

trigger functionality has to be enabled.

ASM330LXH 数据表(PDF) 26 Page - STMicroelectronics