User`s manual
Table Of Contents
- RabbitCore RCM3200 User's Manual
- Table of Contents
- 1. Introduction
- 2. Hardware Setup
- 3. Running Sample Programs
- 4. Hardware Reference
- 5. Software Reference
- 6. Using the TCP/IP Features
- Appendix A. RCM3200 Specifications
- Appendix B. Prototyping Board
- Appendix C. LCD/Keypad Module
- Appendix D. Power Supply
- Appendix E. Motor Control Option
- Notice to Users
- Index
- Schematics
104 RabbitCore RCM3200
The drain on the battery by the RCM3200
is typically 12 µA when no other power is sup-
plied. If a 165 mA·h battery is used, the battery can last almost 2 years:
The actual life in your application will depend on the current drawn by components, not
on the RCM3200 and the storage capacity of the battery. The RCM3200 does not drain the
battery while it is powered up normally.
Cycle the main power off/on on the RCM3200 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 RCM3200
experience a loss of main power.
NOTE: Remember to cycle the main power off/on any time the RCM3200 is removed
from the Protoyping Board or motherboard since that is where the backup battery
would be located.
D.1.2 Reset Generator
The RCM3200 uses a reset generator to reset the Rabbit 3000 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 RCM3200 has a reset output, pin 1 on header J2.
D.2 Optional +5 V Output
The RCM3200 boards have an onboard charge pump that provides the +5 V needed by the
RealTek Ethernet chip.
165 mA·h
12 µA
------------------------ 1.6 years.=