Introduction
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SPRUI07–March 2020
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Enhanced Capture (eCAP)
5.1 Introduction
This eCAP module is a Type-0 eCAP. See the C2000 Real-Time Control Peripheral Reference Guide for a
list of all devices with an eCAP module of the same type, to determine the differences between the types,
and for a list of device-specific differences within a type.
5.2 Features
Features for eCAP include:
• Speed measurements of rotating machinery (for example, toothed sprockets sensed via Hall sensors)
• Elapsed time measurements between position sensor pulses
• Period and duty cycle measurements of pulse train signals
• Decoding current or voltage amplitude derived from duty cycle encoded current/voltage sensors
The eCAP module described in this guide includes the following features:
• 4-event time-stamp registers (each 32 bits)
• Edge polarity selection for up to four sequenced time-stamp capture events
• Interrupt on either of the four events
• Single-shot capture of up to four event time-stamps
• Continuous mode capture of time stamps in a four-deep circular buffer
• Absolute time-stamp capture
• Difference (Delta) mode time-stamp capture
• All above resources are dedicated to a single input pin
• When not used in capture mode, the eCAP module can be configured as a single-channel PWM output
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