2. Soldering the headers Before using your clickTM board, make sure to solder 1x8 male headers to both left and right side of the board. Two 1x8 male headers are included with the board in the package. RTC3 click 1 TM 2 3 4. Essential features Turn the board upside down so that the bottom side is facing you upwards. Place shorter pins of the header into the appropriate soldering pads. Turn the board upward again. Make sure to align the headers so that they are perpendicular to the board, then solder the pins carefully. 1. Introduction RTC3 clickTM carries BQ32000, a real time clock/calendar with automatic switchover to backup power supply. The clock frequency is derived from an onboard 32.768KHz oscillator. RTC3 clickTM communicates with the target board microcontroller through mikroBUSTM I2C lines: SCL, SDA. In addition, the INT pin serves as a configurable interrupt output. The board is designed to use a 3.3V power supply only. 3. Plugging the board in Once you have soldered the headers your board is ready to be placed into the desired mikroBUSTM socket. Make sure to align the cut in the lower-right part of the board with the markings on the silkscreen at the mikroBUSTM socket. If all the pins are aligned correctly, push the board all the way into the socket. RTC3 clickTM has an integrated trickle charger that maintains a backup charge through with an onboard super capacitor. The board is ideal for applications which require realtime clocks, calendars and programmed alarms. It counts seconds, minutes, hours, date of the month, month, day of the week, and year with leap-year clock function with four year calendar. click TM BOARD www.mikroe.com RTC3 clickTM manual ver 1.00 0100000074497 8. Code examples 5. Schematic VCC-3V3 VCC-3V3 VCC-3V3 X1 R1 2K2 AN RST CS SCK MISO MOSI +3.3V GND LD1 PWM INT TX RX SCL SDA +5V GND MIKROBUS DEVICE CONN. INT 32.768KHz C3 C4 22pF 22pF VCC-3V3 C1 C2 1uF 100nF VCC-3V3 1 2 3 4 SCL SDA E1 0.22F Once you have done all the necessary preparations, it's time to get your clickTM board up and running. We have provided examples for mikroCTM, mikroBasicTM and mikroPascalTM compilers on our Libstock website. Just download them and you are ready to start. R5 0 U1 OSCI OSCO Vback GND Vcc IRQ SCL SDA 8 7 6 5 VCC-3V3 R2 4K7 VCC-3V3 .com VCC-3V3 R3 4K7 R4 4K7 INT SCL SDA 9. Support BQ32000 MikroElektronika offers free tech support (www.mikroe.com/support) until the end of the product's lifetime, so if something goes wrong, we're ready and willing to help! 25.4 mm / 1000 mils 6. Dimensions mm mils LENGTH 28.5 1122 WIDTH 25.4 1000 HEIGHT* 16.4 645.7 7. RTC3 clickTM alternatives 10. Disclaimer RTC3 clickTM, as the name implies, is the third clickTM board with a real time clock module. Visit the clickTM board page to see all available alternatives. Including RTC clickTM which can also work on a 5V power supply. MikroElektronika assumes no responsibility or liability for any errors or inaccuracies that may appear in the present document. Specification and information contained in the present schematic are subject to change at any time without notice. www.mikroe.com/click 28.5 mm / 1122 mils * without headers Copyright (c) 2015 MikroElektronika. All rights reserved.