Information

Chapter 34
12-bit Digital-to-Analog Converter (DAC)
34.1 Introduction
NOTE
For the chip-specific implementation details of this module's
instances see the chip configuration chapter.
The 12-bit digital-to-analog converter (DAC) is a low-power general-purpose DAC. The
output of this DAC can be placed on an external pin or set as one of the inputs to the
analog comparator, operational amplifiers (OPAMPs), analog-to-digital converter (ADC),
or other peripherals.
34.2 Features
The features of the DAC module include:
• On-chip programmable reference generator output. The voltage output range is from
1⁄4096 V
in
to V
in
, and the step is 1⁄4096 V
in
, where V
in
is the input voltage.
• V
in
can be selected from two reference sources
• Static operation in Normal Stop mode
• 16-word data buffer supported with configurable watermark and multiple operation
modes
• DMA support
34.3 Block diagram
The block diagram of the DAC module is as follows:
K20 Sub-Family Reference Manual, Rev. 1.1, Dec 2012
Freescale Semiconductor, Inc.
Preliminary
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