Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Freescale Semiconductor K20D72M
Summary of Contents for Freescale Semiconductor K20D72M
- Page 1 TWR-K20D72M User Manual Rev. 1.1 Freescale Semiconductor Inc.
-
Page 2: Table Of Contents
Contents 1.1 Features ....................................4 1 TWR-K20D72M Overview ........................4 1.2 Getting started ..................................5 1.3 Reference Documents ............................... 5 2.1 K20D72M Microcontroller .............................. 6 2 Hardware Description ..........................5 2.2 Clocking ....................................7 2.3 System Power ..................................7 2.3.1 Board Power Select ................................... 7 2.3.2 RTC VBAT ...................................... - Page 3 List of Figures Figure 1. Front side of TWR-K20D72M module ..................4 Figure 2. Back side of TWR-K20D72M module ................... 5 Figure 3. TWR-K20D72M Block Diagram ....................6 Figure 4. Infrared Port Implementation ..................... 9 List of Tables Table 1. Cortex Debug Connector Pinout ....................8 Table 2.
-
Page 4: Features
ARM® Cortex™-M4 architecture with USB 2.0 full-speed OTG controller. The TWR- K20D72M microcontroller module can operate in stand-alone mode or as part of the Freescale Tower System, a modular development platform that enables rapid prototyping and tool re-use through reconfigurable hardware. -
Page 5: Getting Started
Figure 2. Back side of TWR-K20D72M module 1.2 Getting started Follow the Quick Start Guide found printed in the TWR-K20D72M box or the interactive DVD for the list of recommended steps for getting started. There are also lab walk-through guides available on the tool support page for the TWR-K20D72M: http://www.freescale.com/TWR-K20D72M. -
Page 6: K20D72M Microcontroller
Power Figure 3: TWR-K20D72M Block Diagram 2.1 K20D72M Microcontroller The TWR-K20D72M module features the MK20DX256VLL7. The Kinetis K20 microcontroller family is part of the Kinetis portfolio of devices built around an ARM® Cortex-M4™ core. Refer to the Family Product Brief... -
Page 7: Clocking
The real time clock (RTC) module on the K20D72M has two modes of operation, system power-up and system power-down. During system power-down, the RTC is powered from the backup power supply, VBAT. The TWR-K20D72M provides a battery holder for a coin cell battery that can be used as the TWR-K20D72M User’s Manual... -
Page 8: Debug Interface
An on-board, MC9S08JM60 based Open Source BDM (OSBDM) circuit provides a debug interface to the K20D72M. A standard USB A male to Mini-B male cable (provided) can be used for debugging via the USB connector, J14. The OSJTAG interface also provides a USB to serial bridge. Drivers for the OSJTAG interface are provided in the P&E Micro Kinetis Tower Toolkit (available on the included DVD). -
Page 9: Usb Interface
The FlexBus interface is not used directly on the TWR- K20D72M. Instead, a subset of the FlexBus is connected to the Primary Connector so that the external bus can access devices on Tower peripheral modules. Refer to Table 6 “TWR-K20D72M Primary Connector Pinout“and sheet 8 of the... -
Page 10: General Purpose Tower Plug-In (Twrpi) Socket
Connectors and Pin Usage Table” for information about which port pins is connected to these features. 2.10 General Purpose Tower Plug-in (TWRPI) Socket The TWR-K20D72M features a socket that can accept a variety of different Tower Plug-in modules featuring sensors, RF transceivers, and more. The General Purpose TWRPI socket provides access to I2C, SPI, IRQs, GPIOs, timers, analog conversion signals, TWRPI ID signals, reset, and voltage supplies. -
Page 11: Microphone And Buzzer
Reset 2.12 Microphone and buzzer TWR-K20D72M board includes a microphone U16 which connects with one ADC channel to allow audio recording, there is a low-pass filter implemented before microphone input goes to ADC channel. Jumper J4 can be used for connection with the ADC channel. There is also a buzzer connected with one PWM output channel on FTM module, jumper J21 is used for this connection. -
Page 12: Jumper Table
3 Jumper Table There are several jumpers provided for isolation, configuration, and feature selection. Refer to the following table for details. The default installed jumper settings are shown in bold with asterisks. Table 4. TWR-K20D72M Jumper Table Setting Jumper Option... -
Page 13: Input/Output Connectors And Pin Usage Table
Disable POTENTIOMETER to ADC1_DM0 4 Input/Output Connectors and Pin Usage Table Table 5 provides details on which K20D72M pins are using to communicate with the TWR-K20D72M sensors, LEDs, switches, and other I/O interfaces. Note: Some port pins are used in multiple interfaces on-board and many are potentially connected to off-board resources via the Primary and Secondary Connectors. - Page 14 Electrode 9 (J5 Pin 14) PTB17 TSI0_CH10 Electrode 10 (J5 Pin 15) PTB18 TSI0_CH11 Electrode 11 (J5 Pin 16) PTB19 TSI0_CH12 TWRPI ID0 (J5 Pin 17) ― ADC0_DP0 TWRPI ID1 (J5 Pin 18) ― ADC0_DM0 TWR-K20D72M User’s Manual Page 14 of 17...
-
Page 15: Elevator Connections
Tower System: the Primary and Secondary Elevator connectors. The Primary Elevator connector, comprised of sides A and B, is utilized by the TWR-K20D72M, while the Secondary Elevator connector only makes connections to ground (GND). Table 6 provides the pinout for the Primary Elevator Connector. - Page 16 EBI_D4 PTD2 LATCH_ AD4 EBI_AD4 EBI_D3 PTD3 LATCH_ AD3 EBI_AD3 EBI_D2 PTD4 LATCH_ AD2 EBI_AD2 EBI_D1 PTD5 LATCH_ AD1 EBI_AD1 EBI_D0 PTD6 EBI_AD0 LATCH_ AD0 Ground Ground 3.3V 3.3V Power 3.3V 3.3V Power TWR-K20D72M User’s Manual Page 16 of 17...
- Page 17 Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © Freescale Semiconductor, Inc. 2011. All rights reserved. TWR-K20D72M User’s Manual Page 17 of 17...
Need help?
Do you have a question about the K20D72M and is the answer not in the manual?
Questions and answers