參數(shù)資料
型號(hào)： L9953XPTR
廠商： STMICROELECTRONICS
元件分類： 運(yùn)動(dòng)控制電子
英文描述： BRUSH DC MOTOR CONTROLLER, 10 A, PDSO36
封裝： ROHS COMPLIANT, SSOP-36
文件頁(yè)數(shù)： 16/38頁(yè)
文件大?。?/td> 535K
代理商： L9953XPTR
L9953 / L9953XP
Functional description of the SPI
Doc ID 14278 Rev 3
4
Functional description of the SPI
4.1
Serial Peripheral Interface (SPI)
This device uses a standard SPI to communicate with a microcontroller. The SPI can be
driven by a microcontroller with its SPI peripheral running in following mode: CPOL = 0 and
CPHA = 0.
For this mode, input data is sampled by the low to high transition of the clock CLK, and
output data is changed from the high to low transition of CLK.
This device is not limited to microcontroller with a build-in SPI. Only three CMOS-compatible
output pins and one input pin will be needed to communicate with the device. A fault
condition can be detected by setting CSN to low. If CSN = 0, the DO-pin will reflect the
status bit 0 (fault condition) of the device which is a logical-or of all bits in the status registers
0 and 1. The microcontroller can poll the status of the device without the need of a full SPI-
communication cycle.
Note:
In contrast to the SPI-standard the least significant bit (LSB) will be transferred first
4.2
Chip Select Not (CSN)
The input pin is used to select the serial interface of this device. When CSN is high, the
output pin (DO) will be in high impedance state. A low signal will activate the output driver
and a serial communication can be started. The state when CSN is going low until the rising
edge of CSN will be called a communication frame. If the CSN-input pin is driven above
7.5V, the L9953 will go into a test mode. In the test mode the DO will go from tri-state to
active mode.
4.3
Serial Data In (DI)
The input pin is used to transfer data serial into the device. The data applied to the DI will be
sampled at the rising edge of the CLK signal and shifted into an internal 24 bit shift register.
At the rising edge of the CSN signal the contents of the shift register will be transferred to
Data Input Register. The writing to the selected Data Input Register is only enabled if exactly
24 bits are transmitted within one communication frame (i.e. CSN low). If more or less clock
pulses are counted within one frame the complete frame will be ignored. This safety function
is implemented to avoid an activation of the output stages by a wrong communication frame.
Note:
Due to this safety functionality a daisy chaining of SPI is not possible. Instead, a parallel
operation of the SPI bus by controlling the CSN signal of the connected ICs is
recommended.
相關(guān)PDF資料
PDF描述
L9953TR BRUSH DC MOTOR CONTROLLER, 10 A, PDSO36
L9953 BRUSH DC MOTOR CONTROLLER, 10 A, PDSO36
LA1060 SPECIALTY CONSUMER CIRCUIT, PSIP9
LA1061M SPECIALTY CONSUMER CIRCUIT, PDSO14
LA1061M SPECIALTY CONSUMER CIRCUIT, PDSO14
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L9954 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Door actuator DRVR RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
L9954LXP 制造商:STMicroelectronics 功能描述:
L9954LXPTR 制造商:STMicroelectronics 功能描述:Door Actuator Driver 36-Pin PowerSSO T/R 制造商:STMicroelectronics 功能描述:PTS SMARTPOWER - Tape and Reel 制造商:STMicroelectronics 功能描述:Door Actuator Driver 0.75A 1600mOhm
L9954TR 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DOOR ACTUATOR DRIVER RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
L9954XP 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Door actuator DRVR RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
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