Download KLQRUG, Kinetis L Peripheral Module Quick Reference

Contents
Section number
Title
Page
Chapter 1
General System Setup (Software Considerations)
1.1
Software considerations..................................................................................................................................................11
1.1.1
Overview............................................................................................................................................................11
1.1.2
Code execution...................................................................................................................................................11
1.1.3
Reset and booting...............................................................................................................................................11
1.1.4
1.1.3.1
Device state during reset....................................................................................................................12
1.1.3.2
Device state after reset.......................................................................................................................12
Typical system initialization .............................................................................................................................12
1.1.4.1
Lowest level assembly routines.........................................................................................................12
1.1.4.1.1 Initialize general purpose registers...................................................................................12
1.1.4.1.1.1 Unmask interrupts at ARM core ..................................................................13
1.1.4.1.1.2 Branch to start of C initialization code.........................................................13
1.1.4.2
Startup routines..................................................................................................................................13
1.1.4.2.1 Disable watchdog..............................................................................................................13
1.1.4.2.2 Initialize RAM..................................................................................................................13
1.1.4.2.3 Enable port clocks.............................................................................................................13
1.1.4.2.4 Ramp system clock to selected frequency........................................................................13
1.1.4.2.5 Enable pin interrupt...........................................................................................................14
1.1.4.2.6 Enable UART for terminal communication......................................................................14
1.1.4.2.7 Jump to start of main function for application..................................................................14
Chapter 2
General System Setup (Hardware Considerations)
2.1
Hardware considerations.................................................................................................................................................15
2.1.1
Overview............................................................................................................................................................15
2.1.2
Floorplan............................................................................................................................................................15
2.1.2.1
Connectors.........................................................................................................................................16
Kinetis L Peripheral Module Quick Reference, Rev. 0, 09/2012
Freescale Semiconductor, Inc.
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