onsemi CAT150049SWGI

CAT15002/04 (see table below) is a memory and supervisory solution for microcontroller-based systems. It integrates CMOS serial EEPROM memory with a system power supply monitor featuring undervoltage protection. The memory interface is implemented via an SPI bus serial interface. CAT15002/04 provides a precision VCC sensing circuit with two reset output options: CMOS active-low output or CMOS active-high output. The RESET output is asserted whenever VCC falls below or drops to the reset threshold voltage. The power supply monitor and reset circuit protect the system controller during power-up, power-down, and undervoltage conditions. Seven reset threshold voltages support 5V, 3.3V, 3V, and 2.5V systems. If the supply voltage exceeds the tolerance range, the reset signal is asserted to prevent the system microcontroller, ASIC, or peripherals from operating. After the supply voltage exceeds the reset threshold level, the reset signal is typically deasserted after 240ms.

• Precision power supply voltage monitoring
• Supports 5V, 3.3V, 3V, and 2.5V systems
• 7 threshold voltage options
• Active-high or active-low reset
• Guaranteed valid reset at VCC = 1V
• 10MHz SPI compatible
• 16-byte page write buffer
• Low-power CMOS technology
• 1,000,000 program/erase cycles
• 100-year data retention
• Industrial temperature range
• RoHS-compliant 8-pin SOIC package
• Lead-free, halogen-free/bromine-free flame retardant, RoHS compliant