RV-2251-C3

APPLICATIONS IoT Metering Industrial Automotive Health Care Wearables, Portables BLOCK DIAGRAM RV-2251-C3 Real-Time Clock Module with I2C-Bus DIMENSIONS Package: 3,7 0,8 0,3 0,55 Recommended Solder Pad: 0,8 0,8 0,8 0,8 0,8 0,7 0,7 0,8 3,0 2,5 1,25 1 2 3 4 5 12 6 11 10 9 8 7 0,2 0,55 0,5 0,8 0,5 4,2 Metal lid is connected to VSS (pin #7) All dimensions in mm typical 0,9 max. DESCRIPTION The RV-2251-C3 is a SMT Real-Time Clock Module that incorporates an integrated CMOS circuit together with an XTAL. It operates under vacuum in a hermetically sealed ceramic package with metal lid. FEATURES Low power consumption: 210 nA @ 3 V. Wide operating voltage range: 0.9 V to 5.5 V. Time accuracy: ±20 ppm @ 25°C. 3.0 V Regulated Output for ML rechargeable batteries (VREG). Level shifter for peripherals (VIO). User programmable offset value. Automatic Backup switchover function and VBAT monitoring. Provides year, month, date, weekday, hours, minutes and seconds. Time Update and Alarm functions. Clock output frequency: 32.768 kHz. I2C-bus interface: 400 kHz. 100% Pb-free, RoHS-compliant. Automotive qualification according to AEC-Q200 available. VDD VREG VOUT VBAT VSS ECO VIO VIOL SCL SDA CLKOUT INT VOLTAGE DETECTOR1 12 VOLTAGE REGULATOR 10 SW1 11 SW2 9 7 INTERNAL POWER SUPPLY & POR BATTERY MONITOR XTAL 4 OSC FREQUENCY DIVIDER & OFFSET COMPENSATION 5 VOLTAGE DETECTOR2 1 6 3 LEVEL SHIFTER 8 VIOL CONTROL I2C-BUS INTERFACE 2 nINT CONTROL SYSTEM ...