20-101-1221 Rabbit Semiconductor, 20-101-1221 Datasheet - Page 97
20-101-1221
Manufacturer Part Number
20-101-1221
Description
RCM4400W (JAPAN TELEC CERTIFIED)
Manufacturer
Rabbit Semiconductor
Series
RabbitCore®r
Datasheet
1.20-101-1202.pdf
(126 pages)
Specifications of 20-101-1221
Frequency
2.4GHz
Modulation Or Protocol
802.11 b
Power - Output
16dBm
Voltage - Supply
3.3V
Current - Receiving
450mA
Current - Transmitting
450mA
Data Interface
Connector, 2 x 25 Header
Memory Size
512K Flash, 1MB SRAM
Antenna Connector
SMA
Operating Temperature
-20°C ~ 85°C
Package / Case
Module
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Applications
-
Sensitivity
-
Data Rate - Maximum
-
Other names
316-1147
- Current page: 97 of 126
- Download datasheet (2Mb)
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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