XC228X Datasheet, PDF (53/110 Pages) Infineon Technologies AG – 16/32-Bit Single-Chip Microcontroller with 32-Bit Performance

XC2287 / XC2286 / XC2285
XC2000 Family Derivatives
Preliminary
Functional Description
3.7
Capture/Compare Units CCU6x
The XC228x features up to 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, each channel can be used either as capture or as
compare channel.
• Generation of a three-phase PWM supported (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 an 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 an 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
V0.91, 2007-02
Draft Version