Introduction.

Workshop PG5
Exercise Chapter1
Solution 1:
1.1
HM628512ALP-5 for :
HM = Chip provider
62 = RAM
512 = capacity in kByte (Sometimes the capacity is given in kBits)
5 = access time 50 nanoseconds
1.2
The order number is: 4 502 7224 0
(List is in the hardware manual PCD2 and at the beginning of this chapter)
1.3
Memory Configuration
HM62256LP-
R E
WP
As this is a RAM, we have to put the jumper
on R. The E stands for EPROM.
The jumper underneath stands for WP = write
protect. You can’t download your program
anymore it this jumper is set. Set both
jumpers as shown on the picture.
1.4
EX-01-E © Saia-Burgess Controls Ltd. Page 1E-2