Answers Database

96 DATA BOOK: 4000E prom size (bits) page 4-57


Record #1645

Problem Title:
96 DATA BOOK: 4000E prom size (bits) page 4-57


Problem Description:
The data sheet tables for 4k/E prom sizes are in error.

They were INCORRECT in 7/96 databook and earlier.


Solution 1:

The numbers in table 22: XC4000E Program Data (9/96 only),
p. 4-57 are correct.  (They were INCORRECT in 7/96 databook
and earlier.)

Note 1 needs to say:
   PROM Size = Program Data + 40 (header) + 8

Correct prom sizes are (in bits):

xc4003E     53,984
xc4005E/L   95,008
xc4006E    119,840
xc4008E    147,552
xc4010E/L  178,144
xc4013E/L  247,968
xc4020E    329,312
xc4025E    422,176

If makebits is run with -lc=aligned_done, then the bit size
will come out 8 bits less as shown in the 7/96 databook.

The default alignment option is -lc=aligned_lc which gives
the additional 8 bits mentioned.



End of Record #1645