NXP Semiconductors MPC5605BK, Reference Manual

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Chapter 28 Analog-to-Digital Converter (ADC)
MPC5606BK Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 715
Chapter 28
Analog-to-Digital Converter (ADC)
28.1 Overview
28.1.1 Device-specific features
• Two ADC modules, (ADC_0 with 10-bit resolution and ADC_1 with 12-bit resolution)
• 0–V
DD
common mode conversion range
• Independent reference supplies for each ADC
• 53 single-ended input channels (depending on package type), expandable to 81 channels via
external multiplexing
— Internally multiplexed channels
– 16 precision channels shared between 10-bit and 12-bit ADCs
– Three standard channels shared between 10-bit and 12-bit ADCs
– Five dedicated standard channels on 12-bit ADC
– As many as 29 dedicated standard channels on 10-bit ADC
— Externally multiplexed channels
– Internal control to support generation of external analog multiplexer selection
– Four internal channels optionally used to support externally multiplexed inputs, providing
transparent control for additional ADC channels
– Each of the four channels supports as many as eight externally multiplexed inputs
• Three independently configurable sample and conversion times for high precision channels,
standard precision channels, and externally multiplexed channels
• Dedicated result registers available for every channel. Conversion information, such as mode of
operation (normal, injected or CTU), is associated to data value.
• One Shot/Scan Modes
• Chain Injection Mode
• Conversion triggering sources:
— Software
— CTU
— PIT channel 2 and 6 (for injected conversion)
• Conversion triggering support — internal conversion triggering from periodic interrupt timer (PIT)
or timed I/O module (eMIOS)
• Power-down mode for analog portion of ADC
• Supports DMA transfer of results based on the end of conversion
• 6 + 3 analog watchdogs (6 on 10-bit ADC, 3 on 12-bit ADC) with interrupt capability for
continuous hardware monitoring