Information

Chapter 31
Analog-to-Digital Converter (ADC)
31.1 Introduction
NOTE
For the chip-specific implementation details of this module's
instances see the chip configuration chapter.
The 16-bit analog-to-digital converter (ADC) is a successive approximation ADC
designed for operation within an integrated microcontroller system-on-chip.
NOTE
For the chip specific modes of operation, refer to the Power
Management information for the device.
31.1.1 Features
Features of the ADC module include:
• Linear successive approximation algorithm with up to 16-bit resolution
• Up to 4 pairs of differential and 24 single-ended external analog inputs
• Output modes: differential 16-bit, 13-bit, 11-bit and 9-bit modes, or single-ended 16-
bit, 12-bit, 10-bit and 8-bit modes
• Output formatted in 2's complement 16-bit sign extended for differential modes
• Output in right-justified unsigned format for single-ended
• Single or continuous conversion (automatic return to idle after single conversion)
• Configurable sample time and conversion speed/power
• Conversion complete / hardware average complete flag and interrupt
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 581