Serial Triple Incremental Encoder Interface

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The TMC424 is a triple incremental encoder input chip, which interfaces to any SPITM compatible controller. The TMC424 can especially be used in conjunction with the TMC428 triple stepper motor
controller to provide position verification or stabilization using some additional software. It integrates 24 bit counters for each encoder to provide a high position resolution without CPU interaction. Further
it allows dynamic resolution adaptation to allow direct comparison of encoder counters with motors using a different micro step resolution. All encoder counters can be latched synchronously, or whenever a null channel event occurs, providing a position on strobe holding function. The TMC424 also provides a step / direction output with programmable signal shaping for the TMC428 as an optional function. A multiplexer function is also integrated for the TMC428 reference switches. All
functions can also be used in conjunction.


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Supports 2 and 3 channel incremental encoders with a wide range of resolutions
Allows step / direction signal extraction from TMC428 output data stream
Programmable pulse shaping for step / direction interface
24 bit integrated position resolution
Programmable prescaler for Incremental Encoder Interface
4-times evaluation of encoder signals
Fast 32 bit SPI interface
Can share SPITM interface with TMC428 and supplies separate interrupt output
Integrates Reference Switch Multiplexers
Package: TQ100


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