ERV-4162 EUROQUARTZ | Alldatasheet
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Technical content
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE EURO QUARTZ Real Time Clock Module with I C Bus ERV-4162 Ultra-small ceramic package Integrated 32.768kHz crystal I2C Interface, address: D0h Frequency-offset Trimming Register Programmable Alarm and Interrupt Oscillator Fail Detection Watchdog Timer Programmbale Clock Output Time-keeping Mode down to 1.0V
FEATURES
DESCRIPTION
This very small SMD-packaged RTC module combines a 32.768kHz crystal with a CMOS-based oscillator and real-time clock circuitry. The clock function provides tenths/hundredths of seconds, seconds, minutes and hours. The calendar function tracks date, month, year and century with autimatic leap year compensation. Programmable CLKOUT frequencies, alarm settings and watchdog function increase flexibility. The parts are available on 12mm tape and 178mm (7") reel with either 1000 or 3000 pieces per reel. OUTLINE & DIMENSIONS BLOCK DIAGRAM PAD CONNECTIONS (Top view) Page 1 of 2
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE EURO QUARTZ SPECIFICATION (at 25°C) Symbol Condition Min. Typ. Max. Unit Supply Voltage VDD I2C Bus Active 1.3 4.4 V Supply Voltage VDD Timekeeping 1 4.4 V Current consumption during access IDD fsci=400 kHz VDD 3V 35 µA fsci=400 kHz VDD 2V 20 µA Current consumption Timekeeping mode IDDO fsci=0 Hz VDD 3V 350 500 nA fsci=0 Hz VDD 2V 270 400 nA Frequency tolerance ∆F/F @25°C ±20 ppm Ageing first year ∆F/F @25°C ±3 ppm Frequency vs. temp. ∆F/FO 20 ≤ TO ≤ 30 -0.035ppm/°C(T-TO)2±10% ppm Real Time Clock Module with I C Bus ERV-4162 ENVIRONMENTAL Symbol Conditions Max. Dev. Storage temp. range -55 to +125°C TA Operating temp. range -40 to +85° Shock resistance ∆F/F 5000g. 0.3ms ½ sine ±5ppm Vibration resistance ∆F/F 20g / 10~2000 Hz ±5ppm TERMINATIONS & PROCESSING Package Type Termination Processing Ceramic 8-pin Metal lid For SMD mounting AU plated pads Reflow soldering 260°C / 20s max. FREQUENCY/TEMPERATURE CHARACTERISTICS Page 2 of 2