16-Bit S1C17 MCU, Flash 32KBytes, RAM 2KBytes, Operating Frequency 21MHz

Real Time Clock Module, RX4111CE A, Built-In RAM 8Bit x 64Word(512Bit), Auto Power Switching,8 Time Stamps, Frequency Tolerance ±11.5ppm, SPI-4 Wire

Real Time Clock Module, RX8111CE A, Built-In RAM 8Bit x 64Word(512Bit), Auto Power Switching,8 Time Stamps, Frequency Tolerance ±11.5ppm, I2C-Bus

Real Time Clock Module, RX8804CE XB, Built-In DTCXO, with Internal State Output Function, 1 Time Stamp, Frequency Stability ±8ppm, I2C-Bus

Real Time Clock Module, RX8900CE UB, Built-In DTCXO,with Auto Power Switching/Temperature Sensor Function, Frequency Stability ±5ppm, I2C-Bus

Real Time Clock Module, RX8130CE, with Auto Power Switching/Backup Battery Charge Control, I2C-Bus

Real Time Clock Module, RX8010SJ, Built-In 128Bit User RAM (8Bit x 16, SRAM), Frequency Output Function (C-MOS/Open-Drain Output), I2C-Bus

Real Time Clock Module, Built-In Frequency Adjusted 32.768kHz Crystal Unit/DTCXO/Backup Switchover Circuit, I2C-Bus Interface