20-101-1247 Rabbit Semiconductor, 20-101-1247 Datasheet - Page 91
![CORE MODULE RCM5450W](/photos/6/74/67495/20-101-1247_sml.jpg)
20-101-1247
Manufacturer Part Number
20-101-1247
Description
CORE MODULE RCM5450W
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-101-1246.pdf
(120 pages)
Specifications of 20-101-1247
Module/board Type
MPU Core Module
Wireless Frequency
73.73 MHz
For Use With/related Products
RCM5450W
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
316-1149
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A.3 I/O Buffer Sourcing and Sinking Limit
Unless otherwise specified, the Rabbit I/O buffers are capable of sourcing and sinking
8 mA of current per pin at full AC switching speed. Full AC switching assumes a
100 MHz CPU clock with the clock doubler enabled and capacitive loading on address
and data lines of less than 70 pF per pin. The absolute maximum operating voltage on all
I/O is 3.3 V ±10%.
A.4 Bus Loading
You must pay careful attention to bus loading when designing an interface to the
RCM5400W. This section provides bus loading information for external devices.
Table A-4 lists the capacitance for the various RCM5400W I/O ports.
Table A-5 lists the external capacitive bus loading for the various RCM5400W output
ports. Be sure to add the loads for the devices you are using in your custom system and
verify that they do not exceed the values in Table A-5.
OEM User’s Manual
Table A-5. External Capacitive Bus Loading -20°C to +85°C
Parallel Ports A to E
All I/O lines with clock
doubler enabled
Output Port
Table A-4. Capacitance of Rabbit 5000 I/O Ports
I/O Ports
Clock Speed
(MHz)
73.73
Capacitance
Input
(pF)
12
Capacitive Loading (pF)
Maximum External
Capacitance
100
Output
(pF)
14
85
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