N84C162WD45TG

N84C162WD45TG is a N84C162 supervisory circuit with an EEPROM serial 16Kb I2C precision reset controller and watchdog timer (16K). It is a complete memory and supervisory solution for microcontroller-based systems. A serial EEPROM memory (16K) with hardware memory write protection, a system power supervisor with brownout protection, and a watchdog timer are integrated together in low-power CMOS technology. The memory interface is via an I2C bus. The power supply monitor and reset circuit protect memory and system controllers during power up/down and against brownout conditions. It features a 16byte page. In addition, hardware data protection is provided by a write protect pin WP and by a VCCsense circuit that prevents writes to memory whenever VCCfalls below the reset threshold or until VCC reaches the reset threshold during power up.

• 400KHz I2C bus compatible, 2.7V to 6V operation
• Low power CMOS technology, 16Byte page write buffer
• Built-in inadvertent write protection, VCC lock out, write protection pin, WP
• Active high or low reset, precision power supply voltage monitor
• 1,000,000 program/erase cycles
• Manual reset, 100 year data retention
• Standby current is 40µA at VCC = 3.3V
• Clock frequency is 400KHz maximum at VCC = 2.7V to 6.0V
• Output low voltage (SDA) is 0.4V maximum at IOL = 3mA, VCC = 3.0V
• Watchdog period is 1.6s typical at VCC = 2.7V to 6.0V