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[quote="CPUShack"]Anyone know what the 'H' is? Usually its a temperature modifier, but I dont see it documented anywhere. Tis on some 68040s I recently got circa 1993 with the heatsink[/quote]
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Neon_WA
Posted: Fri Oct 14, 2011 3:27 am
Post subject: Re: Motorola XC68040HRC25M
CPUShack wrote:
Usually its a temperature modifier, but I dont see it documented anywhere.
So if working on that train of thought.. these are the parts available with the extra modifier
MC68040
B
RC33
MC68EC040
B
RC33
MC68LC040
B
RC33
MC68030
C
RC25x
MC68030
C
RC33x
SC414074
C
RC25
XC68040
H
RC25x
XC68040
H
RC33M
MC68040
L
RC40A
Neon_WA
Posted: Fri Oct 14, 2011 2:32 am
Post subject:
different family but Motorola has used this part number format elsewhere
The oscillator module provides the reference clock for the MCU system and bus.
Two types of oscillator modules are available:
• MC68HC08xxx— built-in oscillator module (X-tal oscillator) that requires an external crystal or ceramic-resonator.
This option also allows an external clock that can be driven directly into OSC1.
• MC68HRC08xxx — built-in oscillator module (RC oscillator) that requires an external RC connection only.
Xaar
Posted: Fri Oct 14, 2011 1:58 am
Post subject:
Thanks for that info
Best regards, Xaar.
vezhlys
Posted: Thu Oct 13, 2011 10:02 am
Post subject:
One version is expressed here (though I am in doubt about it):
http://www.amibay.com/showthread.php?t=13945
Xaar
Posted: Thu Oct 13, 2011 2:16 am
Post subject:
I'll pick up this thread..
I got such an 68040 today (Motorola XC68040HRC25M).
Does anyone know what the "H" stands for?
Best regards, Xaar.
CPUShack
Posted: Sun May 16, 2010 2:49 pm
Post subject: Motorola XC68040HRC25M
Anyone know what the 'H' is?
Usually its a temperature modifier, but I dont see it documented anywhere.
Tis on some 68040s I recently got circa 1993 with the heatsink
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