RV1805C3 Datasheet | Golledge

Features  Extremely low current consumption  Miniature package with integrated crystal  Trickle charger, power management & switch  Backup battery input (internal switchover)  Programmable alarm, timer and interrupt Block Diagram Specifications Parameters Frequencies (programmable): 32.768k Hz ~ 1/60Hz Frequency tolerance @ 25°C: ±100ppm typ Product RV1805C3 - - Time accuracy: ±2ppm typ (0.17s/day) @ 25°C - Operating temperature range: -40 to +85°C - Storage temperature range: -55 to +125°C - Frequency / temp coefficient: -0.035ppm/°C2 ±10% - Supply voltage (VDD): I2C bus active 1.6 ~ 3.6V Time-keeping mode 1.5 ~ 3.6V - - Supply current (I2C, fscl=400k Hz): 6μA typ (VDD=3.0V, ) 1.5μA typ (VDD=1.7V) Supply current (time-keeping VDD=3V): 60n A typ, 80n A max (32k Hz XTL) 17n A typ, 25n A max (RC MODE) 22n A typ, 32n A max (RC AUTOCAL) - - - - - 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 - - Standard.  Optional - Please specify required code(s) when ordering Option Codes Ordering Information Product name eg: RV1805C3 ±25ppm -40+85°C Option code X (eg RV1805C3/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 Description This RTC IC has been specially designed for ultimate low current consumption of typically 60 n A @ VDD 3.0V for 32.768 k Hz XTAL mode. Additionally, there is an RC-Mode consuming only 17n A and an autocalibrated RC-mode consuming 22n A which permits to operate this RTC module several hours at Backup Supply Voltage using low-cost MLCC. The very small SMT ceramic-package bines the 32.768 k Hz crystal unit with the CMOS-based oscillator and real-time-clock IC. The calender function track year, month, date, and day-of-the-week. Thefactory calibrated clock achieves a...