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Yuantu Huang
- 20th February 2005, 00:53
Dear All,

I read the PIC18F8X20 datasheet and AN869, and found some ASM and C sample code of External Memory Interface (EMI).

I have no idea how to use PBP and PIC18F8X20 to access up to 2MB external memory, both SRAM and flash EEPROM, respectively. If someone did or know how to do, please help.

Thank you very much.

Yuantu
mister_e
- 20th February 2005, 00:55
better are your chance to have an answer if you provide your external memory part# ;)
Yuantu Huang
- 20th February 2005, 01:25
Dear Steve,

Please find EMI block digram in the attachment. Now use two 8 bit latchs (74HC/HCT373) instead of one16 latch. The SRAM is CY7C1020CV33 and the flash EEPROM is AM29LV160D.

Thank you very much for your help.

Yuantu