piclist 2000\05\29\140350a >
Thread: [EE]: Microcontroller with 4 USARTs and 40 pins
www.piclist.com/techref/microchip/ios.htm?key=usart
picon face BY : Bob Ammerman email (remove spam text)



Oops, I left out one more point.

The original requirement was for 4 channels, not 5. The interrupt rate
doesn't change as channels are deleted, but both maximum and average
interrupt handler times will go down.

For 5 channels: max is 55, average is 51 (2.0 MIPs available for task-level)
For 4 channels: max is 53, average is about 44 (3.1 MIPs available for
task-level)
For 3 channels: max is 51, average is about 38 (4.1 MIPs available for
task-level)
For 2 channels: max is 49, average is about 31 (5.2 MIPs available for
task-level)
For 1 channel: max is 44, average is about 22 (6.6 MIPs available for
task-level)

Bob Ammerman
RAm Systems
(high function, high performance, low-level software)

<005201bfc996$bc60c880$669b9cd1@ramdell> 7bit

See also: www.piclist.com/techref/microchip/ios.htm?key=usart
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Subject (change) [EE]: Microcontroller with 4 USARTs and 40 pins

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