參數(shù)資料
型號(hào): L7250
廠商: 意法半導(dǎo)體
英文描述: 5V & 12V SPINDLE AND VCM MOTORS DRIVER
中文描述: 5V的
文件頁數(shù): 41/46頁
文件大?。?/td> 478K
代理商: L7250
41/46
L7250
4.5 Shock Sensor
This block takes input from a piezoelectric or charging mode shock sensor element (selectable using the SPI
bit ShockConf -> Reg02H, bit 7 ), and includes external filtering capability. A digital latched signal is available
on SkDout pin if the Sken bit (from SPI) is set to 1 otherwise the SkDout pin is transparent to the shock signal.
If the output signal has been latched, a pulse to zero of the Sken bit it is necessary to clear it.
The shock sensor element will be connected to the Skin and VREF25.
Figure 19. Piezoelectric Shock Sensor typical application block diagram (Reg02H->bit7=0)
Figure 20. Charging Shock Sensor typical application block diagram (Reg02H->bit7=1)
24
SkOut
26
SkFout
25
SkFin
Vref25+VthH
Vref25-VthL
0
1
S
R
27
SkDout
21
Vref25
23
Skin
R
9R
Vref25
SkEn (from SPI)
R1ext
C1ext
C2ext
R2ext
10M
24
SkOut
26
SkFout
25
SkFin
Vref25+VthH
Vref25-VthL
0
1
S
R
27
SkDout
21
Vref25
23
Skin
Vref25
SkEn (from SPI)
R1ext
C1ext
C2ext
R2ext
Vref25
CSext
RSext
R
R
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