RV-4162 Datasheet, PDF (4/39 Pages) MICORO CRYSTAL SWITZERLAND – Ultra Small Real Time Clock

Micro Crystal
Ultra Small Real Time Clock / Calendar Module
RV-4162
RV-4162
Ultra Small Real Time Clock / Calendar Module with I²C Interface
1. OVERVIEW
 RTC module with built-in “Tuning Fork” crystal oscillating at 32.768 kHz
 Serial RTC with alarm functions:
- 400 kHz I²C serial interface
- Memory mapped registers for seconds, minutes, hours, day, date, month, year and century
- Tenths / hundredths of seconds register
 350 nA timekeeping current at 3.0 V
 Timekeeping down to 1.0 V
 1.3 V to 4.4 V I²C bus operating voltage
 Low operating current of 35 A (f_SCL = 400 kHz)
 32.768 kHz square wave output available at power-up, suitable for driving a uC in low power mode (can be
disabled)
 Programmable 1 Hz to 32.768 kHz square wave output
 Programmable alarm with interrupt function
 Oscillator stop detection monitors clock operation
 Accurate programmable watchdog: 62.5 ms to 31 min timeout
 Software clock calibration, can adjust timekeeping within +/-2 ppm
 Automatic leap year compensation
 Operating temperature range: -40°C to +85°C
 Ultra small and compact C7 package size, RoHS-compliant and 100% leadfree: 3.2 x 1.5 x 0.8 mm
1.1. GENERAL DESCRIPTION
The RV-4162 is a low power serial Real Time Clock (RTC) module with built-in 32.768 kHz crystal (no external
components are required for the oscillator). Eight registers are used for the clock / calendar function and are
configured in binary coded decimal (BCD) format. An additional 8 registers provide status / control of alarm,
calibration, programmable square wave output and watchdog functions. Addresses and data are transferred
serially via a two line, bidirectional I²C interface. The built-in address register is incremented automatically after
each WRITE or READ data byte.
Functions available to the user include a time-of-day clock / calendar, alarm interrupts, programmable square wave
output, and watchdog. The eight clock address locations contain the century, year, month, date, day, hour, minute,
second and tenths / hundredths of a second in 24-hour BCD format. Corrections for 28, 29 (leap year), 30 and 31
day months are made automatically.
1.2. APPLICATIONS
The RV-4162 RTC module combines standard RTC functions in high reliable, ultra-small ceramic package:
 Smallest RTC module (embedded XTAL) in an ultra-small 3.2 x 1.5 x 0.8 mm leadfree ceramic package.
 Price competitive
The unique size and the competitive pricing make this product perfectly suitable for many applications:
 Automotive: Navigation & Tracking Systems / Dashboard / Tachometers / Car Audio & Entertainment
Systems
 Metering: E-Meter / Heating Counter / Smart Meters / PV Converter
 Outdoor: ATM & POS systems / Ticketing Systems
 Medical: Glucose Meter / Health Monitoring Systems
 Safety:
Security & Camera Systems / Door Lock & Access Control
 Consumer: Gambling Machines / TV & Set Top Boxes / White Goods
 Automation: Data Logger / Home & Factory Automation / Industrial and Consumer Electronics
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