101-1121 Rabbit Semiconductor, 101-1121 Datasheet - Page 140
![KIT CAMERA INTERFACE APPLICATION](/photos/9/18/91835/101-1121_sml.jpg)
101-1121
Manufacturer Part Number
101-1121
Description
KIT CAMERA INTERFACE APPLICATION
Manufacturer
Rabbit Semiconductor
Series
RabbitCore 3000r
Specifications of 101-1121
Sensor Type
Motion, PIR (Pyroelectric Infrared)
Interface
10/100 BaseT Ethernet
Embedded
Yes, Other
Utilized Ic / Part
RCM3365
Interface Type
Ethernet
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Voltage - Supply
-
Sensitivity
-
Sensing Range
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
316-1119
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A lithium battery with a nominal voltage of 3 V and a minimum capacity of 165 mA·h is
recommended. A lithium battery is strongly recommended because of its nearly constant
nominal voltage over most of its life.
The drain on the battery by the RCM3365/RCM3375 is typically 6 µA when no other power
is supplied. If a 165 mA·h battery is used, the battery can last about 3 years:
The RCM3365/RCM3375 module does not drain the battery while it is powered up
normally.
Cycle the main power off/on on the RCM3365/RCM3375 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
RCM3365/RCM3375 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.
D.1.2 Battery-Backup Circuit
Figure D-2 shows the battery-backup circuit.
The battery-backup circuit serves three purposes:
• It reduces the battery voltage to the SRAM and to the real-time clock, thereby limiting
• It ensures that current can flow only out of the battery to prevent charging the battery.
• A voltage, VOSC, is supplied to U1, which keeps the 32.768 kHz oscillator working
134
the current consumed by the real-time clock and lengthening the battery life.
when the voltage begins to drop.
NOTE: Remember to cycle the main power off/on any time the RCM3365/RCM3375 is
165 mA·h
----------------------- -
removed from the Prototyping Board or motherboard since that is where the backup
battery would be located.
6 µA
Figure D-2. RCM33365/RCM3375 Backup Battery Circuit
=
3.1 years.
W
W
W
RabbitCore RCM3365/RCM3375
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