RV-1805-C3 Real Time Clock Module

The RV-1805-C3 is an ultra-low-power real-time clock module built for efficient, reliable timekeeping in battery-powered electronics. It integrates the crystal (XTAL) directly into a hermetically sealed ceramic package, removing the need for external clock tuning.

With a maximum timekeeping current of just 0.08µA (80nA), it is well suited to long-life designs where every nanoamp matters. Communication is via a standard I2C, 2-wire serial interface for straightforward integration with microcontrollers.

The module also includes useful internal functions such as a backup battery trickle charger, watchdog timer and 256 bytes of user RAM, making it a compact timing solution for embedded and remote applications.

Features:

• Alarm: Included
• Programmable Clock Output: Included
• RAM: Included
• Timer: Included
• Trickle Charger: Included
• Watchdog Timer: Included

Specifications:

• Type: Clock/Calendar
• Features: Alarm, Programmable Clock Output, RAM, Timer, Trickle Charger, Watchdog Timer
• Memory Size: 256B
• Time Format: HH:MM:SS:hh (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I2C, 2-Wire Serial
• Voltage - Supply: 1.5V ~ 3.6V
• Current - Timekeeping (Max): 0.08µA @ 3V
• Operating Temperature: -40°C ~ 85°C (TA)
• Mounting Type: Surface Mount
• Mfg #: RV-1805-C3-32.768KHZ-2PPM-TA-QC