AS5055-EQFT austriamicrosystems, AS5055-EQFT Datasheet
AS5055-EQFT
Specifications of AS5055-EQFT
Related parts for AS5055-EQFT
AS5055-EQFT Summary of contents
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... ADC and a smart power management controller. The angle position, alarm bits and magnetic field information are transmitted over a standard 3-wire or 4-wire SPI interface to the host processor. The AS5055 is available in a small QFN 16-pin 4x4x0.85mm package and specified over an operating temperature of -20 to +85°C. 2 Benefits ...
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... Low Power Mode..........................................................................................................................................7 9.5 Interrupt Chaining.........................................................................................................................................8 10 SPI Communication ......................................................................................................................................9 10.1 Command Package ..................................................................................................................................9 10.2 Read Package (Value Read from AS5055) ...............................................................................................9 10.3 Write Data Package (Value Written to AS5055).........................................................................................9 10.4 Register Block........................................................................................................................................ 10 10.5 SPI Interface Commands........................................................................................................................ 11 10.5.1 READ Command ............................................................................................................................... 11 10.5.2 WRITE Command .............................................................................................................................. 11 10.5.3 CLEAR ERROR FLAG Command....................................................................................................... 12 10 ...
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... AS5055 Data Sheet – Pinout 6 Pinout 6.1 Pin Assignments Figure 2. QFN-16 Package and Pinout (TOP View) 6.2 Pin Descriptions Table 1. Pin Descriptions Pin# Symbol 1 MOSI 2 MISO 3 SCK 4 SS/ 5 tb0 6 tb1 7 tb2 8 tb3 9 Test coil 10 En_INT/ 11 VDDp 12 VDD 13 VSS 14 Wire_mode 15 INT/ 16 Test ...
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... AS5055 Data Sheet – General Specifications 7 General Specifications 7.1 Absolute Maximum Ratings (Non operating) Stresses beyond those listed under “Absolute Maximum Ratings“ may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at these or any other conditions beyond those indicated under “ ...
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... High level output voltage Low level output voltage Capacitive load 8 User Programming The AS5055 does not require any programming by the user. A dedicated on-chip zero position programming is not implemented zero position programming is required recommended to store the zero position offset in the host controller. www.austriamicrosystems.com ...
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... However with this configuration, the minimum supply voltage is 3.15V. 9.3 Reading an Angle The external microcontroller can respond to the INT request by reading the angle value from the AS5055 over the SPI interface. Once the angle value is read, the INT output is cleared again. ...
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... Low Power Mode After completing the readout of an angle value, the device is in very low power condition. The AS5055 remains in sleep mode until it receives another angle reading request over the SPI interface. The average power consumption therefore depends on the interval, at which the external controller reads an angle over the SPI Interface ...
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... AS5055 Data Sheet – Operation Modes 9.5 Interrupt Chaining Every chip contains a configurable gate to combine its own internally generated interrupt signal with a signal applied externally over the XENINT-pin. The INT-mode register is preset via an OTP register can be overwritten by the SPI interface. Case A ...
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... Flag is not applicable. The Parity is generated from the upper 15 bit and forms an even parity over the whole frame. The Error-Flag indicates that a failure occurred in a previous transmission. 10.1 Command Package Every command sent to the AS5055 is represented with the following layout. Bit MSB ...
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... AS5055 Data Sheet – SPI Communication 10.4 Register Block Register Bits Mode Power ON Reset (POR) Register - [0x3F22] POR_OFF 8 r/w Software Reset Register - [0x3C00] software_reset 14 Clear Error Flag Register - [0x3380] clr_error_flag 14 No Operation Register - [0x0000] NOP 14 Automatic Gain Control (AGC) Register - [0x03FF8] ...
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... READ command (MSB high) and the address the chip has to access, the second package transmitted to the AS5055 device can be any command the chip has to process next. The content of the desired register is available in the MISO register of the master device at the end of the second transmission cycle. ...
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... AS5055 Data Sheet – SPI Communication 10.5.3 CLEAR ERROR FLAG Command The CLEAR ERROR FLAG command is implemented as READ command. This command clears the ERROR FLAG which is contained in every READ frame. The READ data are 0x0000, which indicates a successful clear command. Figure 7. CLEAR ERROR FLAG Command The package necessary to perform a CLEAR ERROR FLAG is built up as follows ...
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... After the data package is sent, the soft reset is generated. The fuses of the PPTRIM are loaded into the registers and a new conversion cycle will be started. If the device is in sleep mode the oscillator will be started first. Figure 8. SOFTWARE RESET Command In order to invoke a software reset on the AS5055 the following bit pattern has to be sent. Bit MSB ...
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... AS5055 Data Sheet – SPI Communication 10.5.5 NOP Command The NOP command represents a dummy write to the AS5055. Figure 9. NOP Command The NOP command frame looks like follows. Bit MSB The chip’s response on this command is 0x0000 – error happens. www.austriamicrosystems.com NOP Command ...
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... The 16 bit SPI Interface enables read / write access to the register blocks and is compatible to a standard micro controller interface. The SPI module is active as soon as /SS pin is pulled low. The AS5055 then reads the digital value on the MOSI (master out slave in) input with every falling edge of SCK and writes on its MISO (master in slave out) output with the rising edge ...
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... AS5055 Data Sheet – SPI Interface Figure 11. SPI Command/Response Data Flow 11.2 SPI Timing Figure 12. SPI Timing Diagram Table 7. SPI Timing Characteristics Parameter Description t Time between SS/ falling edge and SCK rising edge L t Time between SS/ falling edge and SCK rising edge ...
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... AS5055 Data Sheet – SPI Interface Notes: (1) Synchronization with the internal clock (2) No synchronization needed because the internal clock is inactive (3) 2 internal system clock cycles (e. MHz 11.3 SPI Connection to the Host UC 11.3.1 Single Slave Mode Figure 13. Single Slave Mode Note: 3 Wire Mode (read only): If the ERROR FLAG is set the device must be externally reset ...
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... AS5055 Data Sheet – SPI Interface 11.3.2 Multiple Slave, n+3 Wire (Separate ChipSelect) Figure 14. Multiple Slave, n+3 Wire (Separate ChipSelect) 11.3.3 Daisy Chain, 4 Wire Figure 15. Daisy Chain, 4 Wire www.austriamicrosystems.com Revision 1.2 18 – 22 ...
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... AS5055 Data Sheet – Placement of the Magnet 12 Placement of the Magnet 12.1 Non-Linearity Error over Displacement As shown in Figure 17, the recommended horizontal position of the magnet axis is over the diagonal center of the IC. Figure 16 shows a typical error curve at a vertical magnet distance of 1.0mm, measured with a NdFeB N35H magnet with 6mm diameter and 2 ...
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... AS5055 Data Sheet – Package Information 13 Package Information Figure 17. Package Drawing and Hall Sensor Locations Table 8. Mechanical Dimensions Dimension (mm) Min A 0.80 A1 0. 2. 1.85 Dy 1,85 Dz 0.323 r www.austriamicrosystems.com Nom Max Note 0.85 0.90 0.05 0.30 0.35 4.00 BSC 4.00 BSC 2 ...
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... AS5055 Data Sheet – Package Information 13.1 Ordering Information Table 9. Ordering Information Model Description 12-bit low power m agnetic rotary AS5055 EQFT encoder Revision History Table 10. Revision History Revision Date 1.0 23-Mar-2010 1.1 08-Jun-2010 1.11 03-Nov-2010 08-Nov-2010 www.austriamicrosystems.com Owner Description JJA Initial revision of public release version JLU Pin description updated (pin 16), Fig ...
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... AS5055 Data Sheet – Copyrights Copyrights Copyright © 1997-2010, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. ...