common oscillator frequency's

[stj]

i have been looking at the source for the AVR comonent testers.
they can generate a squarewave at a number of frequencys.

all good, but most of the preset ones seem pointless, so i'm looking for idea's for usefull frequency's to replace them with.

the originals go upto 5Mhz - that may be a limit.

i'm thinking:
time bases for mains:
50Hz
60Hz
100Hz
120Hz

some ceramic oscillator freq's
like 455Khz

and some mcu freq's
like 1Mhz, 2Mhz, 3.579Mhz and 4Mhz

[stj]

Re: common oscillator frequency's

o.k. - thanks for the input.

does anybody know any usefull frequency's not on this list?

--------------------------
mains freq's
50hz
60hz
100hz
120hz

timebase
32.768khz

ceramics
384khz
400khz
421khz
455khz
460khz
500khz
560khz

crystals
1mhz
1.8432mhz
2mhz
2.4576mhz
3.2768mhz
3.579545mhz
3.68mhz
3.6864mhz
3.69mhz
3.84mhz
4mhz
4.194304mhz
4.433619mhz
4.9152mhz
5mhz
--------------------------

[mariushm]

Re: common oscillator frequency's

See https://en.wikipedia.org/wiki/Crysta...or_frequencies

Lots of those with weird frequencies are still common (like UART baud rate multiples, VGA clocks, Ethernet).