🚀 go-pugleaf

>I would appreciate if someone could point out the differences among the 
>following devices:
>
>MC68HC11A0FN >MC68HC11A1FN >MC68HCP11A1FN >MC68HC11E1FN
>MC68HC11A0P >MC68HC11A1P >MC68HCP11A1P >


Here's what the part numbers mean on the Motorola HC11 family
of processor chips as per my reference manual:

MC68HCx11xx

MC = MC - Fully Qualified Device
     XC - Tested Production
      M - General Family Reference

68HC = Motorola HCMOS Family

x = 7 - EPROM program memory
    8 - EEPROM program memory
 none - ROM or no program memory

11 = MC68HC11 Family

xx = Specific part type

PART TYPES:

	EPROM	ROM	EEPROM	RAM

11A8		8K	512	256	basic device for whole family
11A1			512	256	same as A8 with ROM disabled
11A0				256	same as A1 with EEPROM disabled
811A2			2K	256
811A8			8K+512	256
11E9		12K	512	512
11E1			512	512	E9 with ROM disabled
11E0				512	E1 with EEPROM disabled
811E2			2K	256
711E9	12K		512	512
11D3		4K		192	low cost 40 pin
711D3	4K			192	low cost programmable (once)
11F1			512	1K	high performance


There are other differences in functionality between the various
part numbers but they're a bit complex to type out. I.E.; There are
four LESS A/D channels on the 11A8 if you buy the 48 pin DIP as
opposed to the 52 pin PLCC ( smt ) package.

Find a copy of the Motorola HC11 Reference Manual ( Motorola document
number M68HC11RM/AD ).

BTW, Wondering why you would want to disable the ROM or EEPROM?
How 'bout cause it dosen't work.

later,
John

.....................................................................
reply to 'from' address; hbg6@citek.mcdphx.mot.com
NOT the 'sender' line address!
Someday my sysadm will decide this is a 'real' problem. :-)
.....................................................................
All opinions expressed are mine and not Motorolas, their loss.
.....................................................................