RICOH Co.,Ltd.

LOW VOLTAGE DETECTOR

Maxim Integrated

Low-Voltage / CMOS Analog Multiplexers/Switches

RICOH Co.,Ltd.

POWER MANAGEMENT ICs MARK INFORMATIONS

Analog Devices

2.5 V to 5.0 V Micropower, Precision Series Mode Voltage References

NXP Semiconductors.

256×8-bit CMOS EEPROM with I2C-bus interface

NEC => Renesas Technology

DIVIDE-BY-4 PRESCALER

Philips Electronics

256×8-bit CMOS EEPROM with I2C-bus interface