参数资料
型号: MMA6556KW
厂商: Freescale Semiconductor
文件页数: 40/53页
文件大小: 0K
描述: IC ACCELEROMETER X AXIS 16QFN
标准包装: 75
轴: X
加速范围: ±120g
灵敏度: 16 LSB/g
电源电压: 3.13 V ~ 5.25 V
输出类型: SPI
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)
3.8.11
PCM Output Function
The device provides the option for a PCM output function. The PCM output is enabled by setting the A_CFG bits in the
DEVCFG register to the appropriate state as described in Section 3.1.6.6 . Selecting the PCM output enables the following func-
tions:
? The PCM pin is programmed as a digital output. Reference Section 2.3 for the pin electrical parameters.
? The acceleration value output from the offset cancellation block is saturated to 9-bits and converted to an unsigned value.
Note, the 9-bit unsigned acceleration value uses the full range of values (0 - 511).
? The 9-bit acceleration value is input into a summer clocked at 8MHz.
? The carry from the summer circuit is output to the PCM pin.
A block diagram of the PCM output is shown in Figure 32 .
Exception conditions affect the PCM output as listed in Section 4.5 .
Output Scaling
9
OC[9:1]
Sample updated every 8 μ S
A
CARRY
9 Bit ADDER
9
ARM/PCM
D FF
D FF
D FF
Q FF
Q FF
Q FF
B
SUM
f CLK = 8 MHz
D Q
D Q
D Q
D FF Q
D FF Q
D FF Q
CLK Q
CLK Q
CLK
CLK
CLK
CLK Q
CLK
CLK
CLK
Q
Q
Q
Q
Q
Q
9
Figure 32. PCM Output Function Block Diagram
3.9
Serial Peripheral Interface
The device includes a Serial Peripheral Interface (SPI) to provide access to the configuration registers and digital data. Ref-
erence Section 4 for details regarding the SPI protocol and available commands.
MMA655x
Sensor
40
Freescale Semiconductor, Inc.
相关PDF资料
PDF描述
MMA6826AKW IC ACCELEROMETER XY AXIS 16QFN
MMA6854KW IC ACCELEROMETER X AXIS 16QFN
MMA7331LR2 ACCELEROMETER 4G XYZ ENH 14-LGA
MMA8451QT IC ACCELEROMETER 3AXIS 16QFN
MMA8452QR1 IC ACCELER 2G/4G/8G 3AXIS 16QFN
相关代理商/技术参数
参数描述
MMA6556KWR2 功能描述:加速计 - 板上安装 X-AXIS 120G 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
MMA65XX 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Dual-Axis SPI Inertial Sensor
MMA6700AEGR2 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High Accuracy Low g Inertial Sensor MEMS Sensing, State Machine ASIC
MMA6700EG 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High Accuracy Low g Inertial Sensor MEMS Sensing, State Machine ASIC
MMA6700EGR2 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High Accuracy Low g Inertial Sensor MEMS Sensing, State Machine ASIC