20-101-1202 Rabbit Semiconductor, 20-101-1202 Datasheet - Page 50
![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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4.5 Memory
4.5.1 SRAM
All RCM4400W modules have 512KB of battery-backed data SRAM installed at U6, and
512KB of fast SRAM are installed at U7.
4.5.2 Flash EPROM
All RCM4400W modules also have 512KB of flash EPROM installed at U5.
Writing to arbitrary flash memory addresses at run time is discouraged. Instead, define a
“user block” area to store persistent data. The functions writeUserBlock and
readUserBlock are provided for this. Refer to the
Designer’s Handbook
4.5.3 Serial Flash
The 1MB serial flash memory on the RCM4400W is used to bootstrap the FPGA for the
Wi-Fi circuits, and was not available for customer use. Starting with Dynamic C v. 10.54,
it is possible to access 800KB of the serial flash for customer use as long as your applica-
tion does not try to access the serial flash during the first call to
44
NOTE: Rabbit recommends that any customer applications should not be constrained by
the sector size of the flash EPROM since it may be necessary to change the sector size
in the future.
for additional information.
Rabbit 4000 Microprocessor
sock_init()
RabbitCore RCM4400W
.
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