AS5047U-HTST datasheet(16/51 Pages) AMSCO

Part #	AS5047U-HTST

Description	14-Bit On-Axis Magnetic Rotary Position Sensor with Up to 14-Bit Binary Incremental Pulse Count

PDF	51 Pages

Scroll/Zoom	100%

Manufacturer	AMSCO [ams AG]

Direct Link	http://www.ams.com

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Page 16

ams Datasheet

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[v1-00] 2018-Oct-30

AS5047U − Detailed Description

SPI Interface (Slave)

The SPI interface shall connected to a host microcontroller

(master) to read or write the volatile memory as well as to

program the non-volatile OTP registers.

The AS5047U SPI only supports slave operation mode. It

communicates at clock rates up to 10 MHz.

The AS5047U SPI uses mode=1 (CPOL=0, CPHA=1) to exchange

data. As shown in Figure 18, a data transfer starts with the

falling edge of CSn (CLK is low). The AS5047U samples MOSI

data on the falling edge of CLK. SPI commands are executed at

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

first.

A CRC is protecting the SPI Data.

SPI Timing

The AS5047U SPI timing is shown in Figure 18.

Figure 18:

SPI Timing Diagram

CSn

(Input)

CLK

(Input)

MOSI

(Input)

MISO

(Output)

tclk

tMOSI

tMISO

tOZ

tCSn

tclkL

tclkH

Data[23]

Data[22]

Data[0]

AS5047U-HTST Datasheet(PDF) 16 Page - ams AG