Renesas Electronics Corporation PMIC - Supervisors X5083S8I-4.5A

The X5083S8I-4.5A from Quarktwin Technology Ltd. is a CPU supervisor that integrates multiple functions including Power-on Reset Control, Watchdog Timer, Supply Voltage Supervision, and 8Kbit SPI EEPROM memory. This combination is designed to reduce system costs and board space while enhancing reliability. The device activates a power-on reset circuit upon power application, holding the RESET signal active to allow stabilization of the power supply and oscillator before code execution. The Watchdog Timer provides an independent reset mechanism for microcontrollers, with selectable timeout intervals from three preset values. The low V_{CC} detection circuitry resets the system when the supply voltage falls below a specified threshold, with five standard reset threshold voltages available, and the option to reprogram the threshold for custom applications. The X5083S8I-4.5A features low power consumption, with a maximum standby current of less than 50µA when the watchdog is active, and less than 1µA when inactive. It supports a SPI interface with a clock rate of 3.3MHz and includes built-in write protection for the EEPROM memory. The device is available in multiple package types including 8 LD SOIC, 8 LD PDIP, and 8 LD TSSOP, and is compliant with RoHS standards. This product is suitable for applications in communications equipment, industrial systems, computer systems, and battery-powered devices.