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AS5140H Datasheet(PDF) 4 Page - ams AG |
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AS5140H Datasheet(HTML) 4 Page - ams AG |
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4 / 55 page  Page 4 ams Datasheet Document Feedback [v1-09] 2018-Feb-20 AS5140H − Pin Assignment Pin 1 and 2 are the magnetic field change indicators, MagINCn and MagDECn (magnetic field strength increase or decrease through variation of the distance between the magnet and the device). These outputs can be used to detect the valid magnetic field range. Furthermore those indicators can also be used for contact-less push-button functionality. Pins 3, 4 and 6 are the incremental pulse output pins. The functionality of these pins can be configured through programming the one-time programmable (OTP) register. Figure 5: Pin Assignment for Different Incremental Output Modes Mode 1.x: Quadrature A/B Output Represents the default quadrature A/B signal mode. Mode 2.x: Step / Direction Output Configures pin 3 to deliver up to 512 pulses (up to 1024 state changes) per revolution. It is equivalent to the LSB (least significant bit) of the absolute position value. Pin 4 provides the information of the rotational direction. 7 VSS Negative Supply Voltage (GND). 8Prog OTP Programming Input and Data Input for Daisy Chain mode. Internal pull-down resistor (~74kΩ). May be connected to VSS if programming is not used. 9DO Data Output of Synchronous Serial Interface. 10 CLK SSI Clock Input. Schmitt-Trigger input. 11 CSn Chip Select. Active low; Schmitt-Trigger input, internal pull-up resistor (~50kΩ) connect to VSS in incremental mode (see Incremental Power-up Lock Option on page 21) 12 PWM_LSB Pulse Width Modulation of approx. 1kHz; LSB in Mode3.x 13 NC For internal use. Must be left unconnected. 14 NC For internal use. Must be left unconnected. 15 VDD3V3 3V-Regulator Output (see Figure 38) 16 VDD5V Positive Supply Voltage 5V Output Mode Pin 3 Pin 4 Pin 6 Pin 12 1.x: Quadrature A B Index PWM 2.x: Step/direction LSB Direction Index PWM 3.x: Commutation U V W LSB Pin Number Pin Name Description |
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