AS5147P-HTST datasheet(12/40 Pages) AMSCO

tên linh kiện	AS5147P-HTST

Giải thích chi tiết về linh kiện	14-Bit On-Axis Magnetic Rotary Position Sensor with 12-Bit Binary

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Page 12

ams Datasheet

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[v1-01] 2015-May-12

AS5147P − Detailed Description

SPI Interface (Slave)

The SPI interface is used by a host microcontroller (master) to

read or write the volatile memory as well as to program the

non-volatile OTP registers. The AS5147P SPI only supports slave

operation mode. It communicates at clock rates up to 10 MHz.

The AS5147P SPI uses mode=1 (CPOL=0, CPHA=1) to exchange

data. As shown in Figure 12, a data transfer starts with the

falling edge of CSn (SCL is low). The AS5147P samples MOSI data

on the falling edge of SCL. SPI commands are executed at the

end of the frame (rising edge of CSn). The bit order is MSB first.

Data is protected by parity.

SPI Timing

The AS5147P SPI timing is shown in Figure 12.

Figure 12:

SPI Timing Diagram

CSn

(Input)

CLK

(Input)

MOSI

(Input)

MISO

(Output)

tclk

tMOSI

tMISO

tOZ

tCSn

tclkL

tclkH

Data[15]

Data[14]

Data[0]

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