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If links are to be used on a future designed board the following layout maybe considered
| From edge connector | Vpp (19) | A18 (37) | /PGM (22) | ||
|---|---|---|---|---|---|
| To U3 PLCC Footprint | Pin 1 | Pin 31 | |||
| 512K PROM | |||||
| 256K PROM | |||||
| 512k FLASH |
The 256K PROM is being usedÂ
Vpp needs to be connected to pin 1
PGM is already connected to pin 31
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