101-1285 Rabbit Semiconductor, 101-1285 Datasheet - Page 125
101-1285
Manufacturer Part Number
101-1285
Description
DEV KIT DELUXE MINICORE RCM5600W
Manufacturer
Rabbit Semiconductor
Series
MiniCore™r
Type
Transceiver, 802.11 b/gr
Datasheet
1.101-1285.pdf
(130 pages)
Specifications of 101-1285
Frequency
2.4GHz
Processor To Be Evaluated
Rabbit 5000
Processor Series
RCM5600W
Interface Type
RS-232, USB, PCI
Maximum Operating Temperature
+ 55 C
Minimum Operating Temperature
- 30 C
Operating Supply Voltage
3.15 V to 3.45 V
Silicon Manufacturer
Rabbit Semiconductor
Silicon Family Name
RabbitCore
Kit Contents
Board
Features
On-board Single-Chip 802.11b/g Transceiver, Built-In Web Server
Development Tool Type
Hardware /
Rohs Compliant
Yes
For Use With/related Products
RCM5600W
Lead Free Status / RoHS Status
Not applicable / Not applicable
Other names
316-1161
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The actual life in your application will depend on the current drawn by components not on
the RCM5600W and on the storage capacity of the battery. The RCM5600W does not drain
the battery while it is powered up normally.
Cycle the main power off/on on the RCM5600W after you install a backup battery for the
first time, and whenever you replace the battery. This step will minimize the current drawn
by the real-time clock oscillator circuit from the backup battery should the RCM5600W
experience a loss of main power.
Rabbit’s Technical Note TN235, External 32.768 kHz Oscillator Circuits, provides addi-
tional information about the current draw by the real-time clock oscillator circuit.
F.1.2 Battery-Backup Circuit
Figure F-2 shows a suggested battery-backup circuit.
The battery-backup circuit serves the following purposes:
• It reduces the battery voltage to real-time clock, thereby limiting the current consumed
• It ensures that current can flow only out of the battery to prevent charging the battery.
• Switches to battery power only when the +3.3 V system power supply is off.
F.1.3 Reset Generator
The RCM5600W uses a reset generator to reset the Rabbit 5000 microprocessor when the
voltage drops below the voltage necessary for reliable operation. The reset occurs between
2.85 V and 3.00 V, typically 2.93 V. The RCM5600W has a reset output on the edge
connector.
OEM User’s Manual
by the real-time clock and lengthening the battery life.
NOTE: Remember to cycle the main power off/on any time the RCM5600W is removed
from the Interface Board or motherboard since that is where the backup battery would
be located.
Figure F-2. RCM5600W Backup Battery Circuit
W
119
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