20-101-1202 Rabbit Semiconductor, 20-101-1202 Datasheet - Page 97
![RCM4400W (FCC CERTIFIED)](/photos/14/8/140870/20-101-1202_sml.jpg)
20-101-1202
Manufacturer Part Number
20-101-1202
Description
RCM4400W (FCC CERTIFIED)
Manufacturer
Rabbit Semiconductor
Type
Wi-Fi / 802.11.br
Datasheet
1.20-101-1202.pdf
(126 pages)
Specifications of 20-101-1202
Frequency
2.4GHz
Wireless Frequency
58.98 MHz
Supported Devices
RAM4400W
Tool / Board Applications
Wireless Connectivity-ZigBee, RF, Infrared, USB
Development Tool Type
Hardware / Software - Dev Kit (Dev Tool)
Rohs Compliant
Yes
For Use With/related Products
RCM4400W
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
316-1143
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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
29.4 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 ±5%.
A.4 Bus Loading
You must pay careful attention to bus loading when designing an interface to the
RCM4400W. This section provides bus loading information for external devices.
Table A-4 lists the capacitance for the various RCM4400W I/O ports.
Table A-5 lists the external capacitive bus loading for the various RCM4400W 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 4000 I/O Ports
I/O Ports
Clock Speed
(MHz)
58.98
Capacitance
Input
(pF)
12
Capacitive Loading (pF)
Maximum External
Capacitance
100
Output
(pF)
14
91
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