101-1226 Rabbit Semiconductor, 101-1226 Datasheet - Page 77

• Manufacturer Part Number: 101-1226
• Description: RCM3900 DEV KIT UNIVERSAL
• Manufacturer: Rabbit Semiconductor
• Series: RabbitCore 3900r
• Type: MPU Moduler

Specifications of 101-1226

• Contents: RabbitCore Module, Dev. Board, AC Adapter, Cable and Dynamic C® CD-Rom
• For Use With/related Products: RCM3900
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 316-1137

A.2 Bus Loading
You must pay careful attention to bus loading when designing an interface to the
RCM3900. This section provides bus loading information for external devices.
Table A-2 lists the capacitance for the various RCM3900 I/O ports.
Table A-3 lists the external capacitive bus loading for the various RCM3900 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-3.
RabbitCore RCM3900 User’s Manual
Table A-3. External Capacitive Bus Loading -40°C to +85°C
Parallel Ports A to G
All I/O lines with clock
doubler enabled
Output Port
Table A-2. Capacitance of Rabbit 3000 I/O Ports
I/O Ports
Clock Speed
(MHz)
22.1
Capacitance
Input
(pF)
12
Capacitive Loading (pF)
Maximum External
Capacitance
100
Output
(pF)
14
77