101-0401 Rabbit Semiconductor, 101-0401 Datasheet - Page 66

• Manufacturer Part Number: 101-0401
• Description: KIT DEV RABBIT2000/TCP/IP
• Manufacturer: Rabbit Semiconductor
• Series: RabbitCore 2000r
• Type: MPU Moduler

Specifications of 101-0401

• Rohs Status: RoHS non-compliant
• Contents: Rabbit 2000™ TCP/IP Development Board, Demo Board, Power Supply, Cable and Software
• Processor To Be Evaluated: Rabbit 2000
• Interface Type: RS-232, RS-485
• For Use With/related Products: RCM2000, RCM2010, RCM2020
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 101-0401; 316-1005; Q906133

B.2 Batteries and External Battery Connections
A battery board with a 1000 mA·h lithium coin cell is available to provide power to the
real-time clock and SRAM when external power is removed from the circuit. This allows
the TCP/IP Development Board to continue to keep track of time and preserves the SRAM
memory contents.
Figure B-2 shows the battery-board circuit.
Alternatively, starting with the 175-0206 version of the TCP/IP Development Board, there
is provision to add a soldered-in battery directly on the TCP/IP Development Board.
The drain on the battery is typically less than 20 µA when there is no external power
applied. The battery can last more than 5 years:
The drain on the battery is typically less than 4 µA when external power is applied. The
battery can last for its full shelf life:
Since the shelf life of the battery is 10 years, the battery can last for its full shelf life when
external power is applied to the TCP/IP Development Board.
62
1000 mA·h
-------------------------- -
4 µA
Figure B-2. Battery-Board Circuit
1000 mA·h
-------------------------- -
=
20 µA
28.5 years (shelf life = 10 years).
=
5.7 years.
TCP/IP Development Kit