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Technical content

Features

 Ultra low power consumption  Compliant with 4-wire SPI-Bus  Time keeping mode down to 1.1 V  Frequency-offset trimming register  Programmable alarm, timer and interrupt 1.20 (max) 5.20 (max) 3.40 (max) SOLDER PAD LAYOUT TOP VIEW 2.20 0.60 1.00 0.90 0.401.00 PAD CONNECTION Supply (VDD) Frequency output (CLKOUT) Serial clock input (SCL) Serial data in (SDI) Serial data out (SDO) PAD CONNECTION Ground (VSS) Chip enable (CE) Interrupt output (/INT) Not connected CLK output enable (CLKOE) 610 Option CodesRV2123C2 Product Parameters Product + option code eg: RV2123C2/B ±20ppm Option code X (eg RV2123C2/X) denotes a custom spec.

Ordering Information

 Standard.  Optional - Please specify required code(s) when ordering Specifications  Available on T&R - 1k or 5k pcs per reel  Evaluation / development board & manual a vailable on request Block Diagram This RTC IC has been specially designed to achieve an ultra-low power consumption of typically 130nA @ VDD 3.0V in time-keeping mode. The very small SMT ceramic-package combines the 32.768 kHz crystal unit with the CMOS-based oscillator and real-time-clock circuitry. The calendar function tracks year, month, date, and day-of-the-week with built-in century and leap-year flags. The clock function tracks minute and second in 24-hour format. Programmable alarm setting and universal timer functions increase flexibility.

Description

Frequencies (programmable): 32.768kHz ~ 1Hz  Frequency tolerance: ±10ppm  A ±20ppm  B Other  specify Turnover temperature (T0): +25°C ±5°C  Frequency / temp coefficient: Operating temperature range: -40 to +85°C  Storage temperature range: -55 to +125°C  Supply voltage (VDD): SPI bus active 1.6 ~ 5.5V  Timekeeping mode 1.1 ~ 5.5V  Supply current (during access): 30/80μA typ/max (fscl=1MHz VDD=3V)  250/400μA typ/ma x (fscl=4.5MHz VDD=3V)  Supply current (time-keeping): 130/180nA typ/max (fscl=0Hz, VDD=3V)  110/160nA typ/max (fscl=0Hz, VDD=1V)  Ageing: ±3ppm ma x 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   Manufactured by Micro Crystal  Stocked & dis tributed by Golledge