XC2786X Datasheet, PDF (53/120 Pages) Infineon Technologies AG – 16/32-Bit Single-Chip Microcontroller with 32-Bit Performance

XC2786X
XC2000 Family Derivatives
Functional Description
3.7
Capture/Compare Units CCU6x
The XC2786X features four CCU6 units (CCU60, CCU61, CCU62, CCU63).
The CCU6 is a high-resolution capture and compare unit with application-specific
modes. It provides inputs to start the timers synchronously, an important feature in
devices with several CCU6 modules.
The module provides two independent timers (T12, T13), that can be used for PWM
generation, especially for AC motor control. Additionally, special control modes for block
commutation and multi-phase machines are supported.
Timer 12 Features
• Three capture/compare channels, where each channel can be used either as a
capture or as a compare channel.
• Supports generation of a three-phase PWM (six outputs, individual signals for high-
side and low-side switches)
• 16-bit resolution, maximum count frequency = peripheral clock
• Dead-time control for each channel to avoid short circuits in the power stage
• Concurrent update of the required T12/13 registers
• Center-aligned and edge-aligned PWM can be generated
• Single-shot mode supported
• Many interrupt request sources
• Hysteresis-like control mode
• Automatic start on a HW event (T12HR, for synchronization purposes)
Timer 13 Features
• One independent compare channel with one output
• 16-bit resolution, maximum count frequency = peripheral clock
• Can be synchronized to T12
• Interrupt generation at period match and compare match
• Single-shot mode supported
• Automatic start on a HW event (T13HR, for synchronization purposes)
Additional Features
• Block commutation for brushless DC drives implemented
• Position detection via Hall sensor pattern
• Automatic rotational speed measurement for block commutation
• Integrated error handling
• Fast emergency stop without CPU load via external signal (CTRAP)
• Control modes for multi-channel AC drives
• Output levels can be selected and adapted to the power stage
Data Sheet
51
V2.1, 2008-08