Post by thread:GAL16V08 & ETI

> Does anybody has a programmer for GAL16V8 that's easy to build? Thanks. > Someone told me yesterday that he could send me a scan of an article > from ETI about a MAX serial ADC. I don't know his name anymore. Is it > possible for him to send it to me. Thanks a lot. There aren't any good public methods for programming most PAL/GAL's. Most manufacturers will only release programming algorithms for their parts to corporate clients who sign a non-disclosure agreement. While there are a number of reasons for this, I think their secrecy stems from the fact that improper programming can easily damage the programming cells in many PLD's without the damage being obvious; if a PLD programmed in this way fails, the manufacturer doesn't want to be held liable. On a more positive note, Lattice produces a chip called the ISP22V10 that may suit your needs. It's only available in a PLCC-28 package (sorry) but it is a 22V10 which is especially designed to be programmable by the end user--in circuit even! Unlike most PLD's, which effectively have to be programmed by commercial programmers, the ISP22V10 can easily be programmed by a home-built programmer--and Lattice will even provide you with the plans and software to do just that! Only two small catches: [1] package--the ISP22V10 is only available in a PLCC28; the pinout is the same as a normal 22V10 except for the four programming wires (which are no-connects on a normal 22V10); [2] price-- the ISP22V10 costs about twice as much as an 'ordinary' 22V10. For one-off projects, though, the extra cost of the chip should be offset by the savings on the programmer.

>[2] price-- >the ISP22V10 costs about twice as much as an 'ordinary' 22V10. For >one-off projects, though, the extra cost of the chip should be offset by >the savings on the programmer. Lattice just announced (this week) a price restructuring which removes the price penalty of in-circuit parts. They also announced that _ALL_ their products will be in-circuit ONLY (ISP connection). Andy ====================================================================== Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865 USA Electronics for Industry & R/C Hobbyists "Go fast, turn right, and keep the wet side down!" ======================================================================