Micro Crystal RV-3028-C7, RV3120-C3 & RV3149-C3 time clock modules

Micro Crystal has announced three new real time clock modules; the RV-3028-C7, RV-3129-C3 and RV3149-C3 series. The RV-3028-C7 sets the bar for low power consumption with 40nA at 3V. It features battery switch over and a factory calibrated time accuracy of ±1 ppm at 25°C. The RV3128-C3 and RV3149-C3 feature temperature compensation, and while the former comes with an I2C interface the latter comes with an SPI interface. Both feature contacts with side castellations that allow standard optical post soldering inspection for verification.

Features

• Extreme low power consumption: 40 nA @ 3 V
• Wide operating voltage range: 1.2 V to 5.5 V
• Time accuracy: Factory calibrated to ±1 ppm @ 25°C
• Non-volatile configuration settings with user programmable offset value
• Backup Switch and Trickle Charge
• Provides year, month, date, weekday, hours, minutes and seconds
• 32 bit UNIX time counter
• Timer, alarm and external event functions
• Clock output: 32.768 kHz, 8192 Hz, 1024 Hz, 64 Hz, 32 Hz, 1 Hz
• 43 bytes non-volatile user memory, 2 bytes user RAM
• I2C-bus interface: 400 kHz
• 100% Pb-free, RoHS-compliant
• Automotive qualification according to AEC-Q200 available

Applications

• Internet of Things