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update PgmType for 27C040 EPROM

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The (AMD/Atmel) 27C040 EPROM doesn't have a dedicated Write Enable (WE),
instead sharing the same pin for CE# and PGM#. This updates the PromDevice27
line for this device to use the E27C_PGM_CE PgmType.

This configuration has been successfully used to read, program and verify an
AM27C040 device. A +12.75V voltage was applied to Vpp during the duration of
device programming.
This commit is contained in:
Will Jhun 2023-07-15 15:10:57 -04:00
parent 8a3995a309
commit a42ecc2719
1 changed files with 1 additions and 1 deletions
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TommyPROM/TommyPROM.ino
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@ -48,7 +48,7 @@ PromDevice28C prom(32 * 1024L, 64, 10, true);
//PromDevice27 prom(8 * 1024L, E27C_PGM_WE, 1000L, 15, 4); // 2764 with SEEQ intelligent programming
//PromDevice27 prom(32 * 1024L, E27C_PGM_WE, 1000L, 25, 3); // 27C256 with SEEQ intelligent programming
//PromDevice27 prom(2 * 1024L, E27C_PGM_WE, 50000L, 1, 0); // 2716 with single 50ms write
//PromDevice27 prom(512 * 1024L, E27C_PGM_WE, 100L, 11, 0); // 27C040 with Atmel rapid programming
//PromDevice27 prom(512 * 1024L, E27C_PGM_CE, 100L, 11, 0); // 27C040 with Atmel rapid programming, CE connected to CE#/PGM#
//PromDevice27 prom(32 * 1024L, E27C_PGM_CE, 100L, 25, 0); // W27C257/W27E257 with 100uS program pulse on CE
//PromDevice27 prom(64 * 1024L, E27C_PGM_CE, 100L, 1, 0, false); // W27C512 with single 100uS program pulse on CE, no verify
PromDevice27 prom(256 * 1024L, E27C_PGM_WE, 20L, 1, 0, false); // SST27SF020 with single 20us write, no verify