Real Time Clock, Ultra Low Power RV8523C3 Specifications 2011/65/EU Product Parameters RV8523C3 Frequencies (programmable): 32.768kHz ~ 1Hz 3.70 (typ) 2.50 (typ) 0.90 (max) SOLDER PAD LAYOUT 0.80 1 10 5 6 0.80 0.60 3.00 0.30 0.50 0.80 TOP VIEW PAD CONNECTION PAD CONNECTION 1 Supply (VDD) 6 Interrupt 2 output (INT2) 2 Interrupt 1 output (INT1) 7 Ground (VSS) 3 Serial clock input (SCL) 8 Backup supply voltage 4 Serial data (SDA) 9 Not connected 5 Clock output (CLKOUT) 10 Not connected Features Ultra low power consumption (130nA) Turnover temperature (T0): +25°C ±5°C Frequency / temp coefficient: -0.035ppm/°C2 ±10% Operating temperature range: -40 to +85°C -40 to +125°C Storage temperature range: -55 to +125°C Supply voltage (VDD): I2C bus active 1.6 ~ 5.5V Power management 1.8 ~ 5.5V Time-keeping mode 1.2 ~ 5.5V Supply current (during access): 100/200μA typ/max (fscl=1MHz) 50/100μA typ/max (fscl=100kHz) Supply current (time-keeping): 130/180nA typ/max (fscl=0Hz, VDD=3V) 110/160nA typ/max (fscl=0Hz, VDD=2V) Ageing: ±3ppm max first year Shock and vibration resistance: ±5ppm, 5,000g, 0.3ms, ½ sine ±5ppm, 20g, 10.0 ~ 2,000Hz Soldering condition: Reflow, 260°C, 20 sec max A B specify E Standard. Optional - Please specify required code(s) when ordering AEC Q200 Rev C compliant Compliant with I2C-Bus interface (400kHz) Backup battery input (internal switchover) Programmable alarm, timer and interrupt ±10ppm ±20ppm Other Frequency tolerance: Option Codes Ordering Information Product + option code eg: RV8523C3/B ±20ppm Option code X (eg RV8523C3/X) denotes a custom spec. Available on T&R - 1k or 3k pcs per reel Evaluation / development board & manual available on request The I2C-Bus is a trademark of Philips Electronics NV Block Diagram Description This RTC IC has been specially designed to achieve an ultra-low power consumption of typically 130nA @ VDD 3.0V in time-keeping mode. It combines a 32.768kHz crystal unit with a CMOS based oscillator and realtime clock circuit. The calendar function tracks year, month, date and day of the week with built-in century and leap-year flags. The clock function tracks minutes and seconds in 24-hour format. Programmable alarm setting, dual timer functions and integrated switchover circuitry increase flexibility. Manufactured by Micro Crystal Stocked & distributed by Golledge Tel: +44 1460 256 100 16 Nov 2012 Fax: +44 1460 256 101 E-mail: [email protected] Web: www.golledge.com