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RV-1805-C3

RV-1805-C3
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RV-1805-C3 Extreme Low Power RTC Module DIMENSIONS Package: 100% leadfree, RoHS - compliant Extreme Low Current consumption XTAL-Mode 60nA RC-Mode 17nA RC Autocalibrated Mode 22nA Factory calibrated Time accuracy typ. ±2.0ppm @ 25°C Miniature SMT ceramic package with integrated Quartz Crystal for best Noise & EMI Immunity Automatic Battery Switchover, Trickle Charger, Power Management & Power Switch Function Programmable CLKOUT frequencies I2C Bus Interface (fast mode 400kHz) Time keeping mode down to 1.5 V Programmable Alarm, Timer and INT 512 Bytes of User RAM DESCRIPTION: This RTC IC has been specially designed for ultimate low current consumption of typically 60 nA @ VDD 3.0V for 32.768 kHz XTAL mode. Additionally, there is an RC-Mode consuming only 17nA and an autocalibrated RC-mode consuming 22nA which permits to operate this RTC module several hours at Backup Supply Voltage using low-cost MLCC. The very small SMT ceramic-package combines the 32.768 kHz crystal unit with the CMOS-based oscillator and real-time-clock IC. The calender function track year, month, date, and day-of-the-week. The factory calibrated clock achieves a time accuracy of typ. ±2.0 ppm @ 25°C and tracks hundredths of second, second, minute and hour in AM/PM or 24-hour format. Additional features include Alarm, Timer and Interrupt functions, Watchdog Timer, Power Management with Power-Switch, Trickle Charger and Automatic Switchover to backup supply voltage. For pick-and-place equipment, the parts are available in 12 mm tape: 7” (178 mm) reel with 1'000 or 3'000 parts 13” (330 mm) reel with 10'000 parts BLOCK DIAGRAM: Analog Compare VBACKUP VDD VSS Power Control Calibration Engine Xtal Osc Cap_RC INPUT OUTPUT CONTROL System Control logic Hundredths Seconds Minutes Hours Date Month Year Weekday Hundredths Alarm Seconds Alarm Minutes Alarm Hours Alarm Date Alarm Months Alarm Weekdays Alarm Status Control1 Control2 Interrupt Mask SQW Calibration XT Sleep Control Timer Control Timer Timer Initial Watchdog Timer Oscillator Control Oscillator Status Trickle Charge BREF Control Cap_RC Control Batmode I/O Analog Status Output Control Ext. RAM Addr. User RAM

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Supply voltage Time keeping Supply voltage Startup Voltage Current consumption I2C fSCL = 400 kHz Time accuracy Current consumption Time Keeping Mode CLKOUT frequency Frequency tolerance Aging ﬁrst year max. ENVIRONMENTAL CHARACTERISTICS: Conditions Storage temp. range TA Operating temperature range Shock resistance Vibration resistance TERMINATIONS AND PROCESSING: For SMD mounting Au plated pads POWER SUPPLY VOLTAGE: 70 XTAL Oscillator Mode 60 Clock Output / Interrupt Serial Clock Input Serial Data Capacitor RC-Oscillator Backup Supply Voltage Power Switch Output Power Supply Voltage...

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