Adding 512K to the PIC16F877, PIC16F887, PIC18F4550 and PIC1

[Chuckt]

Adding 512K to the PIC16F877, PIC16F887, PIC18F4550 and PIC18F4620 microcontrollers

Virtually all PIC microcontrollers have some banking mechanism to extend addressing to additional memory space. But this external data memory is not directly addressable (except in some high versions of PIC18 devices, which include PIC18F8520, PIC18F6620, etc.). In this post we describe easy to implement external memory interface for PIC microcontrollers. Theoretically most of the PIC microcontrollers can use this setup to extend its RAM space. At the prototyping stage we test this system with PIC16F877, PIC16F887, PIC18F4550 and PIC18F4620 microcontrollers.

http://elect.wikispaces.com/Extend+PIC+ ... +using+EMI

http://dangerousprototypes.com/2012/03/ ... r-without/

[brad]

The 18f4550 is one of my alltime favourite pics!]

Super Pixel Bros was made using one of those