Looking for schematic of hc11 expanded mode

[ZeleC]

hi guys
im in need of the shematics of an hc1 expanded mode wth eprom and ram .(other then hc11 evaluation board or the shematic found in the manual of the hc11)
i made one but i m having problems wth it
so any help
and if someone have a hc11 model library for the proteus sp7 please pm me
thx for all the help

 

[solvarg]

hc11 expanded mode

hi guys
im in need of the shematics of an hc1 expanded mode wth eprom and ram .(other then hc11 evaluation board or the shematic found in the manual of the hc11)
i made one but i m having problems wth it
so any help
and if someone have a hc11 model library for the proteus sp7 please pm me
thx for all the help

What sort of problem do you have and what HC11 device are you using?
Regards

 

[ZeleC]

schematics hc11 expanded mode

im working wth HC11E2 and HC11A0
but neither is working
problem :
im working on the expanded mode wth an lcd on a certain adr
the message does not appear on the lcd from the first time but i need to press the reset key many times andsometimes it does not work
so im thinking that im having some problems wiring the R/W to the eprom and ram to choose the OE, RE,WE on the eprom and the ram
dont know maybe i got another problem
but everything else is ; adr ,data, E, and AS signals they r all good .
so im lost here ,not knowing what i going on..

 

[BENOIT]

hc11 modes

Hello Zelec,
You should have a look to my Web Pages about Micro11, CIDfr, and
Programming & application tips for 68hc11.
-http://matthieu.benoit.free.fr/68hc11ap.htm is given a short example
how to control an lcd in expanded mode (with read & write) at address
$4000
-http://matthieu.benoit.free.fr/micro11.htm is given a diagram of a hc11
in expanded mode with a SRAM.
-http://matthieu.benoit.free.fr/cidfr.htm is an application of the 68HC11A1
in expanded mode.
MB.

 

[ZeleC]

what is hc11 expanded mode

thx a lot benoit