Datasheet

53. PDEC – Position Decoder
53.1 Overview
The PDEC consists of a Quadrature / Hall decoder, following by a counter, with two compare channels.
The counter can be split into two parts to report the angular position and the number of revolutions. If the
quadrature decoder feature is not suitable for specific applications, the PDEC module can be used as an
additional time base.
53.2 Features
• Internal prescaler
• Selectable mode of operation:
– QDEC, HALL or COUNTER
• QDEC
– Angular and revolution counts
– Synchronous and asynchronous velocity measurements
– Direction change detection
– Check valid quadrature transitions
– Check index position versus angular position
– Auto correction mode
• HALL
– Window validation of Hall transitions
– Hall code detection
– Direction change detection
– Check valid Hall transitions
– Programmable event generation delay after a Hall transition
• COUNTER
– 16-bit counter with two compare channels
– One of the compare channels can be configured with period settings
– Counter overflow interrupt and event generation option
– Compare match interrupt and event generation option
SAM D5x/E5x Family Data Sheet
PDEC – Position Decoder
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1946