[time-nuts] New PIC frequency dividers

Tom Van Baak tvb at LeapSecond.com
Thu Feb 7 05:36:59 EST 2013


Over the past year many people have asked for special features in those cute little 8-pin PDIP PIC divider chips that I play with and use in my lab.

I've updated the web page: http://leapsecond.com/pic/picdiv.htm

There are now close to 20 different versions. Here's a partial list:

 PD03 -- "4-pin" 10^3 frequency divider (10 MHz to 10 kHz)
 PD04 -- "4-pin" 10^4 frequency divider (10 MHz to 1 kHz)
 PD05 -- "4-pin" 10^5 frequency divider (10 MHz to 100 Hz)
 PD06 -- "4-pin" 10^6 frequency divider (10 MHz to 10 Hz)
 PD07 -- "4-pin" 10^7 frequency divider (10 MHz to 1 Hz)
 PD08 -- "4-pin" 5x10^6 frequency divider (5 MHz to 1 Hz)
 PD09 -- "4-pin" 10 MHz to 1PPS frequency divider (20 us pulse)
 PD10 -- "4-pin" 10 MHz to 1PPS frequency divider (10 ms pulse)
 PD11 -- 10 MHz to 1PPS frequency divider (3 pulse widths), with sync
 PD12 -- 5 MHz to 1PPS frequency divider (3 pulse widths), with sync
 PD13 -- 10 MHz to three frequencies divider (1-10-100 Hz), with sync
 PD14 -- 5 MHz to three frequencies divider (1-10-100 Hz), with sync
 PD15 -- 10 MHz to three frequencies divider (1-1k-10k Hz), with sync
 PD16 -- 5/10 MHz to four frequencies divider (1-10-100-1000 Hz)
 PD17 -- 1/2.5/5/10 MHz to 1PPS frequency divider (100 ms), with sync
 PD18 -- 1/2.5/5/10 MHz to 1PPS frequency divider (10 ms), with sync
 PD26 -- 10 MHz to 1PPS frequency divider, with sync and microstep

Note these are all compatible with the TAPR T2-mini board (which comes with a PD17).

/tvb
http://leapsecond.com/pic/


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