TM 2 I2C-RTC I C Real-time Clock User Manual GRAVITECH.US uResearch GRAVITECH GROUP Copyright 2007 MicroResearch GRAVITECH GROUP WWW.GRAVITECH.US TM 2 I2C-RTC I C Real-time Clock User Manual Description Features The I2C-RTC board is a 6-pin CMOS Software clock calibration 2 Real-time Clock device using I C bus. RTC counts seconds, minutes, There are no external components hours, day, date, month and year required. Only two signal lines SDA and Automatic power-fail detect and SCL plus supply voltage and ground are switch circuitry required to be connected. This makes it Low timekeeping voltage down to perfect for embedded systems that require 1.3V real-time clock. Oscillator stop flag Stand alone module, no external This board features innovations that set it components required 2 apart from other real-time clock module. On-board IC pull-up resistors, Innovations feature like on-board pull-up battery holder and power LED resistors, battery holder and power LED. Decoupling supply voltage The module can be quickly connected Design easy for breadboard directly on to the breadboard. The board High quality double sided PCB is small and compact in size 0.80 x 1.05 All SMT components inches. Small and compact in size 0.80 x 1.05 inches The I2C-RTC is designed base on Dual row 0.6 width, 0.1 pitch DS1340-33 IC. It is a real-time clock header pins (RTC)/calendar including the software 2 Support Fast (400kHz) I C interface clock calibration. The device additionally Flexible operating power supply provides a lower timekeeping voltage, and voltage range of 2.97V to 5.5V an oscillator STOP flag. The device is Suitable for 3.3V or 5.0V capable of block access for the register microcontroller map. Two additional registers, which are accessed individually, are required for the trickle charger and flag. The Applications clock/calendar provides seconds, minutes, hours, day, date, month, and year information. A built-in power-sense circuit Portable Instruments detects power failures and automatically Electronic Projects switches to the backup supply. Reads and Telecommunications writes are inhibited while the clock continues to run. Security Systems And much more 2 * I C is a trademark of Philips Semiconductors Corporation. Copyright 2007 MicroResearch GRAVITECH GROUP WWW.GRAVITECH.US