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User’s Manual
77
A.4 I/O Buffer Sourcing and Sinking Limit
Unless otherwise specified, the Rabbit I/O buffers are capable of sourcing and sinking
6.8 mA of current per pin at full AC switching speed. Full AC switching assumes a
22.1 MHz CPU clock and capacitive loading on address and data lines of less than 100 pF
per pin. The absolute maximum operating voltage on all I/O is 5.5 V.
Table A-7 shows the AC and DC output drive limits of the parallel I/O buffers when the
Rabbit 3000 is used in the RCM3365/RCM3375.
Under certain conditions, you can exceed the limits outlined in Table A-7. See the
Rabbit
3000 Microprocessor User’s Manual
for additional information.
Table A-7. I/O Buffer Sourcing and Sinking Capability
Pin Name
Output Drive (Full AC Switching)
Sourcing/Sinking
Limits
(mA)
Sourcing
Sinking
All data, address, and I/O
lines with clock doubler
enabled
6.8
6.8
Summary of Contents for RCM3365
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