Mov'n Up, Migrating from the PIC® Microcontroller 16 Series to the 18 Series

Mov'n Up

INTRODUCTION

18 Series introduction
	Why use 18 series devices?
	18 Series - New and different features summary
		Software/Programming
		Hardware
	AN716
	Example - PIC18F1220
Circuit for PIC18F1220 experiments
Device programming methods
18 Series device programming considerations
18 Series - first look
18 Series instruction set
	Most useful new instructions
		Move or define data - data memory
		Table operations - program memory
		Change register contents
		Control program flow
		Arithmetic
	Less useful new instructions
	Instructions that have been changed
	Instructions not discussed here
	Access designator
	Using some of the new instructions
18 Series I/O ports
Dealing with 2 and 3-byte registers designated by a label
18 Series data memory
	Data memory map - PIC18F1220
	Banking and the access bank
		Bank select register (BSR)
	Data memory table operations - indexed addressing
		LFSR Instruction
	MOVFF instruction
18 Series special function registers - overview
18 Series program memory table read operations
	Creating tables
	Identifying tables
	Pointing
		Example - create a table and read data in the first location
		Example - create a table and read data in the third location
			by incrementing the table pointer
		Example - create a table and read data in the fourth location
			by adding the offset to the table pointer
		Example - create a table and read data in the fifth location
			using a loop with a counter
		Example - create an ASCII text message in a table - use counter
			    to detect end
			Schematic for ASCII text message examples
		Example - create an ASCII text message in a table - use null
			character to detect end
		Example - create an ASCII text message in a table - use null
			character to detect end - second line of data
		Example - create a text string - use null character to detect end
		Example - create an ASCII character string - use null character
			to detect end
	Tables of numbers
18 Series interrupts
	New features
	How 18 series interrupts work
	Interrupt register comparisons - PIC16F870 vs. PIC18F1220
	Prioritized interrupts
		Priority interrupts disabled
		Priority interrupts enabled
		Interrupting an interrupt
	Interrupt vectors
	Context saving
	Prioritized interrupts experiment
		Schematic for prioritized interrupts experiment
18 Series configuration registers
	PIC18F1220 configuration registers (example)
		__config method
		Configuration register 1H - oscillator
		Configuration register 2H - watchdog timer
		Configuration register 2L - brown-out reset and power-up timer
		Configuration register 3H - MCLR
		Configuration register 4L - debug, low voltage programming, stack
		Configuration register 5H - code protection
		Configuration register 5L - code protection
		Configuration register 6H - write protection
		Configuration register 6L - write protection
		Configuration register 7H - table read protection
		Configuration register 7L - table read protection
PIC18F1220 - example
	Pins and functions
	Package
	Ports
	Architecture - overview
		Program memory
		Data memory
	Peripheral control registers - overview of selected registers
	Clock oscillator options
		Internal clock
		OSCCON register
		External clock modes
	Peripherals
		Timers and counters
			TMR0
			TMR1
			TMR2
			CCP module
		A/D
		USART
Appendix A - USART in brief
	RS-232 interface for a PIC microcontroller
	Using a Windows terminal program
	PIC microcontroller-to-PIC serial communication
Appendix B - Program listings vs. page number