TWR-K60N512-KEIL Freescale Semiconductor, TWR-K60N512-KEIL Datasheet - Page 167
TWR-K60N512-KEIL
Manufacturer Part Number
TWR-K60N512-KEIL
Description
K60N512 Keil Tower Kit
Manufacturer
Freescale Semiconductor
Series
Kinetisr
Type
MCUr
Datasheets
1.TWR-ELEV.pdf
(4 pages)
2.TWR-K60N512-KIT.pdf
(8 pages)
3.TWR-K60N512-KIT.pdf
(17 pages)
4.TWR-K60N512-KEIL.pdf
(181 pages)
Specifications of TWR-K60N512-KEIL
Rohs Compliant
YES
Contents
4 Boards, Documentation, DVD
Peak Reflow Compatible (260 C)
Yes
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
Freescale Tower System, K60N512
- TWR-ELEV PDF datasheet
- TWR-K60N512-KIT PDF datasheet #2
- TWR-K60N512-KIT PDF datasheet #3
- TWR-K60N512-KEIL PDF datasheet #4
- Current page: 167 of 181
- Download datasheet (3Mb)
Chapter 18
Using Peripheral Delay Block (PDB) to Schedule
Analog to Digital Converter (ADC) Conversions
18.1 Overview
This chapter will demonstrate how to use the PDB module to schedule and perform ADC
conversions of the analog voltage available from the on-board demonstration
potentiometer. The application will sense the potentiometer control and report it over the
serial port.
The code example shows how to:
Calibration of the ADC is also illustrated.
18.1.1 Introduction
Timing of ADC conversions relative to system events is a key to applications, such as
motor control, and metering, requiring timing of ADC conversions for the best time to get
a noise-reduced reading.
When the Kinetis MCU is acting as a controller, it will output control changes from time
to time. Scheduling ADC conversions around these changes, which may make transient
disturbances in the system, is key.
Scheduling the ADC conversions at a time after the transient effects of the last control
change has been made can enable smooth operation of control loops. The PDB allows
simple scheduling of one or both of the ADC peripherals conversions.
Freescale Semiconductor
• Make a low-level driver for the ADC
• Configure the ADC for averaging a single-ended voltage conversion
• Use the bus clock to clock the ADC
• Use a simple exponential filter on the averaged results
• Have the ADC conversions scheduled at time intervals determined by the PDB
module
Kinetis Quick Reference User Guide, Rev. 0, 11/2010
167
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