20-101-0522 Rabbit Semiconductor, 20-101-0522 Datasheet - Page 32

• Manufacturer Part Number: 20-101-0522
• Description: MODULE RABBITCORE RCM3220
• Manufacturer: Rabbit Semiconductor

Specifications of 20-101-0522

• Module/board Type: MPU Core Module
• Product: Microcontroller Modules
• Core Processor: Rabbit 3000
• Clock Speed: 44.2 MHz
• Interface Type: Ethernet, Serial
• Flash: 512 KB
• Timers: 10 x 8 bit, 1 x 10 bit
• Operating Supply Voltage: 3.15 V to 3.45 V
• Board Size: 69 mm x 47 mm x 22 mm
• Core: RCM3220
• Processor Series: RCM3200
• For Use With/related Products: RCM3220
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 316-1098

A.2 Bus Loading
You must pay careful attention to bus loading when designing an interface to the
RCM3200. This section provides bus loading information for external devices.
Table A-2 lists the capacitance for the various RCM3200 I/O ports.
Table A-3 lists the external capacitive bus loading for the various RCM3200 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.
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Table A-3. External Capacitive Bus Loading -40°C to +70°C
Parallel Ports A to G
All I/O lines with clock
doubler enabled
All I/O lines with clock
doubler disabled
Output Port
Table A-2. Capacitance of Rabbit 3000 I/O Ports
I/O Ports
Clock Speed
14.7456
(MHz)
29.4
Capacitance
Input
(pF)
12
Capacitive Loading (pF)
Maximum External
30–70
Capacitance
100
Output
(pF)
14
RabbitCore RCM3200