Cypress CY7C68013 - Figure 3-2. External Code Memory, EA = 1

CY7C68013
Document #: 38-08012 Rev. *A Page 12 of 48
3.9.3 External Code Memory, EA = 1
The bottom eight kbytes of program memory is external, and therefore the bottom eight kbytes of internal RAM is accessible only
as data memory.
Figure 3-2. External Code Memory, EA = 1
Inside FX2 Outside FX2
7.5 kbytes
USB regs and
4k EP buffers
(RD#,WR#)
0.5 kbytes RAM
Data (RD#,WR#)*
(OK to populate
data memory
here—RD#/WR#
strobes are not
active)
48 kbytes
External
Data
Memory
(RD#,WR#)
(Ok to populate
data memory
here—RD#/WR#
strobes are not
active)
Eight kbytes
RAM
Data
(RD#,WR#)*
64 kbytes
External
Code
Memory
(PSEN#)
*SUDPTR, USB upload/download, I
2
C-compatible interface boot access
FFFF
E200
E1FF
E000
1FFF
0000
Data Code