O.R.E. - Microcontrollers

Microcontrollers

The members of ORE use many different types of microcontrollers, but the vast majority have settled on Microchip products, particularly 16F and 18F series of PIC's and the dsPIC's.

PIC Microcontrollers

PICList provides lots of information to get started

Martin has some programming tips and sample code

HI-TECH PICC Lite - a free C compiler

Bootloaders
PIC downloader version 1.08 - for the 16F876 and 16F877
Jolt - for the 18F series (requires Java)
Colt - for the 18F series (same as above, but doesn't require Java)
Tiny bootloader - for the 16F and 18F series and dsPIC's

Part #	Pins	Code Space	I/O pins	MHz	A/D	UART	PWM	Internal Oscillator	I²C	pinout	$
12F675	8	1k	6	20	4	-	-	4 MHz	-		2
16F688	14	4k	12	20	8	1	-	8 MHz	-		3
16F84^* (obsolete)	18	1k	13	20	-	-	-	-	-		10
16F628	18	2k	16	20	-	1	1	4 MHz	-		5
16F88	18	4k	16	20	7	1	1	8 MHz	yes		4
16F876	28	8k	22	20	5	1	2	-	yes		11
16F877	40	8k	33	20	8	1	2	-	yes		11
18F252	28	16k	23	40	5	1	2	-	yes		10
18F452	40	16k	34	40	8	1	2	-	yes		11
18F2620	28	65k	25	40	10	1	2	8 MHz	yes		10

^* The 16F628 is compatible with the now obsolete 16F84

Note: Vdd is +, Vss is ground

Atmel AVR microcontrollers

AVR Freaks provides all the information you'll need

WinAVR is a suite of developement tools that includes the GCC C compiler. It comes with everything and it's free

Listed below are selected AVRs that have at least 32k of code space

Part # Pins Code Space I/O pins MHz A/D UART PWM Internal Oscillator I²C $

ATmega32 40 (DIP)
44 (SMT) 32k 32 16 8 1 4 16 MHz yes 15

ATmega64 64 (SMT) 64k 53 16 8 2 6 16 MHz yes 19

ATmega128 64 (SMT) 128k 53 16 8 2 6+2 16 MHz yes 24