RX8111CE B

- Interface type: I2C -Bus interface Fast-Mode 400 kHz - Auto power switch function: The VDD voltage is monitored and it switches to the backup power supply by the automatic operation. Backup power supply switching voltage 1.2 V Min. - Clock output function: Output frequency is selectable from 32.768 kHz, 1024 Hz, 1 Hz. When the clock output is not used, the FOUT pin can be used as a timer output pin (CMOS) - Wakeup timer function: Selectable from 244 μs to 32 years (24 bit x1 ch.). Timer source clock selectable from 1/60 Hz, 1 Hz, 64 Hz, 4096 Hz. Auto release after interrupt output from /INT pin at timer completes. This operation is auto repeat with a selected cycle, it can be used like a watchdog timer - Time stamp function: 8 times stamped from year to 1/256 seconds. The time stamp trigger inputs from EVIN pin, self-monitoring and I2C software command. EVIN pin has function of chattering-cancel - Alarm function: It is possible program from year to second - Self-monitoring interruption: Crystal oscillation stop, VBAT low, VDD low

Key features

• Built in frequency adjusted 32.768 kHz crystal unit
• Interface Type: I2C -Bus
• Low backup current: 100 nA Typ. / 3 V
• Auto power switching function: Automatically switches to backup power supply by monitoring the VDD voltage
• Time stamp function: 8 times stamped from year to 1/256 seconds
• Interrupt output: Wake up every minute or every second
• Alarm interruption: Day, date, hour, minute, second
• Auto repeat wakeup timer interruption
• Self-monitoring interruption: Crystal oscillation stop, VBAT low, VDD low