CY7C1365B-117A(J)C | Cypress Semiconductor
I don't see a datasheet on this older part#.
What I found @datasheetcatalog.com (38-05433 Rev.) on page 14 says:
Ordering Information Speed (MHz) Ordering Code Package Name Package Type Operating Range
117 CY7C1365B-117AC A101 100-Lead Thin Quad Flat Pack, 2 Chip Enable Commercial
117 CY7C1365B-117AJC A101 100-Lead Thin Quad Flat Pack, 3 Chip Enable
Could it be possible, that there is a little mistake in the description of the AC vs. the AJC type?
In my opinion i guess that the AJC is the one with 2 Chip Enable.