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参数资料
| 型号： | MMA6826AKW |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 51/54页 |
| 文件大小： | 0K |
| 描述： | IC ACCELEROMETER XY AXIS 16QFN |
| 标准包装： | 75 |
| 轴： | X，Y |
| 加速范围： | ±60g |
| 灵敏度： | 8.2 LSB/g |
| 电源电压： | 3.135 V ~ 5.25 V |
| 输出类型： | SPI |
| 带宽： | 400Hz |
| 接口： | SPI |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-QFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN-EP（6x6） |
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4.5.7
ΣΔ Over Range
If a ΣΔ Over Range failure is present as described in Section 3.11.2 , MMA68xx will respond to acceleration data requests with
a "Valid Acceleration Data Request" response, but the Status bits (S[1:0]) will be set to ’10’. The arming function will be updated
on Acceleration Data Request commands even if a ΣΔ Over Range is detected. Once the over range condition is removed,
MMA68xx will respond to acceleration requests with a "Valid Acceleration Data Request" response with the Status bits (S[1:0])
set to ’10’ on the next SPI transfer, and a "Valid Acceleration Data Request" response with normal status on subsequent SPI
transfers. The SDOV bit in the DEVSTAT register will remain set until a read of the DEVSTAT register occurs.
The PCM output is not affected by the ΣΔ over range condition.
Register operations will be executed as specified in Section 4.4 .
4.6
Initialization SPI Response
The first data transmitted by MMA68xx following reset is the SPI Error response shown in Table 30 . This ensures that an un-
expected reset will always be detectable. MMA68xx will respond to all acceleration data requests with the "Invalid Acceleration
Data Request" response until the DEVRES bit in the DEVSTAT register is cleared via a read of the DEVSTAT register. The arming
function will not be updated on Acceleration Data Request commands until the DEVRES bit in the DEVSTAT register is cleared.
4.7
Acceleration Data Representation
Acceleration values are determined from the 10-bit digital output (DV) using the following equations:
Acceleration = Sensitivity LSB × DV
Acceleration = Sensitivity LSB × ( DV – 512 )
For Signed Data
For Unsigned Data
The linear range of digital values for signed data is -480 to +480, and for unsigned data is 32 to 992. Resulting ranges and
some nominal acceleration values are shown in the following table.
Table 34. Nominal Acceleration Data Values
Nominal Acceleration
Unsigned
Digital Value
993 - 1023
992
991
?
?
?
514
513
512
511
510
?
?
?
33
32
1 - 31
0
Signed
Digital Value
481 - 511
480
479
?
?
?
2
1
0
-1
-2
?
?
?
-479
-480
-481 to -511
-512
Trimmed for
Maximum Sensitivity
(g)
19.666
19.625
?
?
?
+0.082
+0.041
0
-0.041
-0.082
?
?
?
-19.625
-19.666
Unused
Unused
Fault
Trimmed for
Maximum Range
(g)
117.19
116.94
?
?
?
+0.488
+0.244
0
-0.244
-0.488
?
?
?
-116.94
-117.19
MMA68xx
Sensors
Freescale Semiconductor, Inc.
51
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MMA6826AKWR2 | 功能描述:加速计 - 板上安装 XY-AXIS 60/ 60G RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C |
| MMA6826BKW | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Dual-Axis SPI Inertial Sensor |
| MMA6826BKWR2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Dual-Axis SPI Inertial Sensor |
| MMA6826KW | 功能描述:加速计 - 板上安装 XY-AXIS 60/ 60G QFN RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C |
| MMA6826KWR2 | 功能描述:加速计 - 板上安装 XY-AXIS 60/ 60G QFN RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C |
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