[Coco] Checking/Testing a 68B09P
jdaggett at gate.net
jdaggett at gate.net
Mon Jul 2 11:23:24 EDT 2007
On 2 Jul 2007 at 9:08, Joel Ewy wrote:
> But if a 1MHz test of a 2MHz part is good enough, this might be a
> possibility. Maybe this is sufficient motivation to get back to work
> on that project.
**********************
Joel
Since the parts have already been tested once by the manufacturer, any speed with
in the specified range will work to test as to whether the device is functional.
Motorola specified the B parts to run up to 2MHZ guareanteed. Most will actually
surpass that limit by about 10%. Some will exceed that spec by as much as 50%.
Digital circuits run all the way up to a frequency where they stop mainly due to
propogation delays inherent with the fabrication of the IC.
james
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