AS5045B 데이터 시트보기 (PDF) - austriamicrosystems AG
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AS5045B Datasheet PDF : 33 Pages
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AS5045B
Datasheet - Pin Assignments
Table 1. Pin Descriptions
Pin Name
Pin Number
CSn
11
PWM
12
NC
13
NC
14
VDD3V3
15
VDD5V
16
Pin Type
Description
Digital input pull-
down, Schmitt-Trigger
input
Chip Select. Active low. Schmitt-Trigger input, internal pull-up resistor
(50kΩ)
Digital output Pulse Width Modulation
-
Must be left unconnected
-
Must be left unconnected
Supply pin
3V-Regulator Output, internally regulated from VDD5V. Connect to
VDD5V for 3V supply voltage. Do not load externally.
Supply pin
Positive Supply Voltage, 3.0V to 5.5V
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.
Pin 3 and 4 are used for incremental angle information in 12-bit quadrature signal format.
Pin 6 Index output used for incremental angle information. (Zero position reference).
Pins 7, 15, and 16 are supply pins, pins 5, 13, and 14 are for internal use and must not be connected.
Pin 8 (PDIO) is used to program the zero-position into the OTP(see page 17). This pin is also used as digital input to shift serial data through the
device in Daisy Chain configuration, (see page 13).
Pin 11 Chip Select (CSn; active low) selects a device within a network of AS5045Bs and initiates serial data transfer. A logic high at CSn puts the
data output pin (DO) to tri-state and terminates serial data transfer. This pin is also used for alignment mode (see Alignment Mode on page 21)
and programming mode (see Programming the AS5045B on page 17).
Pin 12 allows a single wire output of the 12-bit absolute position value. The value is encoded into a pulse width modulated signal with 1µs pulse
width per step (1µs to 4096µs over a full turn). By using an external low pass filter, the digital PWM signal is converted into an analog voltage,
e.g. for making a direct replacement of potentiometers possible.
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