Has anyone tried to use the 12c509 at 9600 Baud ? (4Mhz OTP's)
It works well at 2400 Baud, but even when using the on-chip calibration
value not all chips work at 9600. I'm guessing that the timing must be
off enough not to lock. The 509 is being fed from a PC via a RS-232 > TTL
converter. When I use the JW chip, all is OK. I've run the simulator with
stopwatch and I get the exact bit delays required. I get the feeling that
9600 Baud with these chips is never going to be reliable using the 4Mhz
internal oscillator. Any ideas or comments would be appreciated.  :-)
Thanks...
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Dave Duffy, Audio Visual Devices
Unit 8, 9-11 Trade Street
Cleveland Qld 4163 Australia
Ph: +61 7 38210362 Fax: +61 7 38210281
E-mail: AVD@mailbox.uq.edu.au
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