Well, yes, those numbers are Market-droid claims, (but they are in the
1K column, not the usual 6 digit claims...)ADI here says $1.99/1K and $2.99/100
formatting link
uct.html for a 200MHz/400MMAC part, with good 32 bit timers
Close enough; There may be a 80MHz imposed by flash, or I might want to clock the CPU at 20MHz for power-budget reasons. It is silly that I am then imposed a ceiling of 50ns for peripherals. Some parts (not many) DO allow faster peripheral clocks than the core.
eg I've seen recent claims of 256Mhz timers on XMega, and some MSP430s and some parts use delay line calibration schemes to get to
1ns or below, on PWM edge resolution, and a subset of those also give higher resolution capture.. I think I've seen a couple that use a high frequency clock for UARTS, as those can nudge over 20MHz these days.Then there are nice parts like the Silabs Si5351A, (close to $1), which can output (almost) any 3 CLK's up to 160MHz, using fractional synthesisers, and a 600-900MHz VCO+Xtal. These can help solve some clock-conflicts.
-jg