參數(shù)資料
型號(hào)： MMA7455L
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述： Three Axis Low-g Digital Output Accelerometer
中文描述： 三三軸低g加速度計(jì)的數(shù)字輸出
文件頁(yè)數(shù)： 19/27頁(yè)
文件大?。?/td> 530K
代理商： MMA7455L
Sensors
Freescale Semiconductor
19
MMA7455L
CLR_INT1
1: Clear “INT1” and LDX/LDY/LDZ or PDX/PDY/PDZ bits in “Detection source” register depending on “Detection control” reg-
ister setting.
0: Do not clear “INT1” LDX/LDY/LDZ or PDX/PDY/PDZ bits in “Detection source” register.
CLR_INT2
1: Clear “INT2” and LDX/LDY/LDZ or PDX/PDY/PDZ bits in “Detection source” register depending on “Detection control” reg-
ister setting.
0: Do not clear “INT2” and LDX/LDY/LDZ or PDX/PDY/PDZ bits in “Detection source” register.
EXAMPLE: How to clear both interrupt flags
This example is to show how to reset the interrupt flags
void ClearIntLatch(void)
{
IIC_ByteWrite(INTRST, 0x03);
IIC_ByteWrite(INTRST, 0x00);
}
To clear the interrupts you must first write a logic 1 into both registers and then a logic 0
.
$18: Control 1 (Read/Write)
INTPIN
0: INT1 pin is routed to “INT1” register and INT2 pin is routed to “INT2” register.
1: INT2 pin is routed to “INT1” register and INT1 pin is routed to “INT2” register.
Note:
Assigned to single pulse detection even if double
pulse detection is selected. “Double pulse detection se-
lected” means “Time window for 2
nd
pulse” is not equal to
zero. When double pulse detection is selected, INT1 reg-
ister bit is not able to be cleared by setting CLR_INT1 bit.
It’s cleared by setting CLR_INT2 bit. In this case, setting
CLR_INT2 clears both INT1 and INT2 register bits and re-
set detecting operation itself.
XDA
1: X axis is disabled for detection.
0: X axis is enabled for detection.
YDA
1: Y axis is disabled for detection.
0: Y axis is enabled for detection.
ZDA
1: Z axis is disabled for detection.
0: Z axis is enabled for detection.
THOPT
(This bit is valid for level detection only, not
valid for pulse detection)
0: Threshold value is absolute only
1: Positive/Negative threshold value is available.
DFBW
0: Digital filter band width is 62.5 Hz
1: Digital filter band width is 125 Hz
$17: Interrupt latch reset (Read/Write)
D7
D6
D5
D4
D3
D2
D1
D0
Bit
--
--
--
--
--
--
CLR_INT2 CLR_INT1
Function
0
0
0
0
0
0
0
0
Default
D7
D6
D5
D4
D3
D2
D1
D0
Bit
DFBW
THOPT
ZDA
YDA
XDA
INTREG[1]
INTREG[0]
INTPIN
Function
0
0
0
0
0
0
0
0
Default
INTREG[1:0]
“INT1” register bit
“INT2” register bit
00
Level Detection
Pulse Detection
01
Pulse Detection
Level Detection
10
Single pulse detection (*Note)
Pulse Detection
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MMA7455L_08 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:±2g/±4g/±8g Three Axis Low-g Digital Output Accelerometer
MMA7455L_09 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:±2g/±4g/±8g Three Axis Low-g Digital Output Accelerometer
MMA7455LR1 功能描述:加速計(jì) - 板上安裝 3-AXIS DIGITAL 2 4 8G RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C
MMA7455LR2 功能描述:加速計(jì) - 板上安裝 3-AXIS DIGITAL 2 4 8G RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C
MMA7455LT 功能描述:加速計(jì) - 板上安裝 3-AXIS DIGITAL 2 4 8G RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C
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