參數(shù)資料
型號(hào)： MMA7450LT
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述： 【2g/【4g/【8g Three Axis Low-g Digital Output Accelerometer
中文描述： 【2克/【4克/【八克三三軸低g加速度計(jì)的數(shù)字輸出
文件頁(yè)數(shù)： 9/22頁(yè)
文件大小： 389K
代理商： MMA7450LT
Sensors
Freescale Semiconductor
9
MMA7450L
is then driven high at the end of a transmission. SPC is the
Serial Port Clock which is also controlled by the SPI master.
SDI and SDO are the Serial Port Data Input and the Serial
Port Data Output. The SDI and SDO data lines are driven at
the falling edge of the SPC and should be captured at the
rising edge of the SPC.
Read and write register commands are completed in 16
clock pulses or in multiples of 8, in the case of a multiple byte
read/write.
SPI READ OPERATION
A SPI read transfer consists of a 1-bit Read/Write signal, a
6-bit address, and 1-bit don’t care bit. (1-bit R/W=0 + 6-bits
address + 1-bit don’t care). The data to read is sent by the
SPI interface during the next transfer. See
Figure 11
and
Figure 12
for the timing diagram for an 8-bit read in 4 wire and
3 wire modes, respectively.
Figure 11. SPI Timing Diagram for 8-Bit Register Read
(4 Wire Mode)
Figure 12. SPI Timing Diagram for 8-Bit Register Read
(3 Wire Mode)
SPI WRITE OPERATION
In order to write to one of the 8-bit registers, an 8-bit write
command must be sent to the MMA7450L. The write
command consists of an MSB (0=read, 1=write) to indicate
writing to the MMA7450L register, followed by a 6-bit address
and 1 don’t care bit.
The command should then be followed the 8-bit data
transfer. See
Figure 13
for the timing diagram for an 8-bit
data write.
Figure 13. SPI Timing Diagram for 8-Bit Register Write
(3 Wire Mode)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MMA7455L 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_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
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