CBC-EVAL-12-34803 is a demonstration kit featuring the Cymbet CBC34803 EnerChip RTC - an integrated
surface mount device combining an Ambiq Micro AM0803 Real-Time Clock (RTC), power management circuit, and solid state rechargeable EnerChip providing up to 100 hours of backup power to the RTC.
The kit demonstrates just how compact an RTC with integrated backup power can be using the low profile surface mount device from Cymbet. The combined solution occupies only 0.25 cm2 of board space.
CBC-EVAL-12-34803 has the following elements:
Low power RTC with I2Cinterface bus
Solid state rechargeable energy storage for real-time clock backup power
Power fail detect with automatic switchover from main power to integrated backup power source
Integrated battery management that controls battery charging and discharge cutoff, ensuring maximum service life of the on-board storage cell
USB connector for easy demonstration and application development on personal computer
Input/output access to board for easy connection to external microcontroller
EVAL-12 Graphical User Interface
The CBC-EVAL-12-34803 includes a PC-based software application that communicates with the USB stick.
Users can set the time of day, date, and countdown timer values to experiment with RTC power-back-up. The application also allows the user access to the RTC registers for viewing and modiication. The software works with Microsoft Windows XP, Windows 7, and Windows 8 operating systems. Once the EVAL-12 USB stick is inserted into the PC, the Connect button is clicked in the GUI to establish communication over the USB port. The entire USB stick or just the CBC34803 Tab Board can then be removed from the PC and the RTC will be powered by the EnerChip rechargeable solid state battery that is integrated within the CBC34803 5mm × 5mm QFN package on the CBC34803 Tab Board.
The EnerChip RTC CBC34803-M5C combines a Real-Time Clock (RTC) and calendar optimized for low power applications with an integrated rechargeable solid state backup battery and all power management functions. The EnerChip RTC ensures a seamless transition from main power to backup power in the event of power loss. The integrated power management circuit ensures thousands of charge-discharge cycles from the integrated EnerChip and manages battery charging, discharge cutoff, power switchover, and temperature compensation to maximize the service life of the device. The CBC34803 provides greater than 5 days of backup time in the event main power is interrupted. The integrated EnerChip recharges quickly, has extremely low self-discharge, is non-flammable, and RoHScompliant. The EnerChip is charged automatically anytime VDD is above 2.5V.
CBC-EVAL-12-34803 User Guide and Schematic