- 您现在的位置：买卖IC网 > Sheet目录478 > MMA8452QR1 (Freescale Semiconductor)IC ACCELER 2G/4G/8G 3AXIS 16QFN
6.7
Control Registers
Note: Except for STANDBY mode selection, the device must be in STANDBY mode to change any of the fields within
CTRL_REG1 (0X2A).
0x2A: CTRL_REG1 System Control 1 Register
0x2A: CTRL_REG1 Register (Read/Write)
Bit 7
ASLP_RATE1
Bit 6
ASLP_RATE0
Bit 5
DR2
Bit 4
DR1
Bit 3
DR0
Bit 2
LNOISE
Bit 1
F_READ
Bit 0
ACTIVE
Table 53. CTRL_REG1 Description
ASLP_RATE[1:0]
DR[2:0]
LNOISE
F_READ
ACTIVE
Configures the Auto-WAKE sample frequency when the device is in SLEEP Mode. Default value: 00.
See Table 54 for more information.
Data rate selection. Default value: 000.
See Table 55 for more information.
Reduced noise reduced Maximum range mode. Default value: 0.
(0: Normal mode; 1: Reduced Noise mode)
Fast Read mode: Data format limited to single Byte Default value: 0.
(0: Normal mode 1: Fast Read Mode)
Full Scale selection. Default value: 00.
(0: STANDBY mode; 1: ACTIVE mode)
Table 54. SLEEP Mode Rate Description
ASLP_RATE1
0
0
1
1
ASLP_RATE0
0
1
0
1
Frequency (Hz)
50
12.5
6.25
1.56
It is important to note that when the device is Auto-SLEEP mode, the system ODR and the data rate for all the system
functional blocks are overridden by the data rate set by the ASLP_RATE field.
DR[2:0] bits select the Output Data Rate (ODR) for acceleration samples. The default value is 000 for a data rate of 800 Hz.
Table 55. System Output Data Rate Selection
DR2
0
0
0
0
1
1
1
1
DR1
0
0
1
1
0
0
1
1
DR0
0
1
0
1
0
1
0
1
ODR
800 Hz
400 Hz
200 Hz
100 Hz
50 Hz
12.5 Hz
6.25 Hz
1.56 Hz
Period
1.25 ms
2.5 ms
5 ms
10 ms
20 ms
80 ms
160 ms
640 ms
ACTIVE bit selects between STANDBY mode and ACTIVE mode. The default value is 0 for STANDBY mode.
Table 56. Full Scale Selection
Active
0
1
Mode
STANDBY
ACTIVE
LNOISE bit selects between normal full dynamic range mode and a high sensitivity, Low Noise mode. In Low Noise mode, the
maximum signal that can be measured is ±4g. Note: Any thresholds set above 4g will not be reached.
F_READ bit selects between Normal and Fast Read mode. When selected, the auto-increment counter will skip over the LSB
data bytes.
MMA8452Q
Sensors
Freescale Semiconductor, Inc.
37
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
MMA8453QR1
IC ACCELER 2G/4G/8G 3AXIS 16QFN
MMBF0201NLT1
MOSFET N-CH 20V 300MA SOT-23
MMBF170-7
MOSFET N-CH 60V 500MA SOT23-3
MMBF170LT1
MOSFET N-CH 60V 500MA SOT-23
MMBF170
MOSFET N-CH 60V 500MA SOT-23
MMBF2201NT1
MOSFET N-CH 20V 300MA SOT-323
MMBF2202PT1
MOSFET P-CH 20V 300MA SOT-323
MMDF1N05ER2G
MOSFET N-CHAN DUAL 2A 50V 8SOIC
相关代理商/技术参数
MMA8452QT
功能描述:加速计 - 板上安装 LOW G 3-AXIS 12BT EX VLT
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
MMA8453Q
制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Xtrinsic MMA8453Q 3-Axis, 10-bit/8-bit Digital Accelerometer
MMA8453QR1
功能描述:加速计 - 板上安装 LOW G 3-AXIS DGTL ACCEL
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
MMA8453QT
功能描述:加速计 - 板上安装 LOW G 3-AXIS DGTL ACCEL
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
MMA8491Q
制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Xtrinsic MMA8491Q 3-Axis Multifunction Digital Accelerometer
MMA8491QR1
功能描述:加速计 - 板上安装 3-Axis Low Voltage Discrete Tilt Sensor
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
MMA8491QT
功能描述:加速计 - 板上安装 3-Axis Low Voltage Discrete Tilt Sensor
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
MMA8652FC
制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Xtrinsic MMA8652FC 3-Axis, 12-bit Digital Accelerometer