CAT14001

www.DataSheet4U.com CAT140xx Voltage Supervisor with I2C Serial CMOS EEPROM FEATURES „ Precision Power Supply Voltage Monitor ƒ 5V, 3.3V, 3V & 2.5V systems ƒ 7 threshold voltage options „ Active High or Low Reset ƒ Valid reset guaranteed at VCC = 1 V „ Supports Standard and Fast I2C Protocol „ 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 For Ordering Information details, see page 14. DESCRIPTION The CAT140xx (see table below) are memory and supervisory solutions for microcontroller based systems. A CMOS serial EEPROM memory and a system power supervisor with brown-out protection are integrated together. Memory interface is via both the standard (100kHz) as well as fast (400kHz) I2C protocol. The CAT140xx provides a precision VCC sense circuit with two reset output options: CMOS active low output or CMOS active high. The RESET output is active whenever VCC is below the reset threshold or falls below the reset threshold voltage. The power supply monitor and reset circuit protect system controllers during power up/down and against brownout conditions. Seven reset threshold voltages support 5V, 3.3V, 3V and 2.5V systems. If power supply voltages are out of tolerance reset signals become active, preventing the system microcontroller, ASIC or peripherals from operating. Reset signals become inactive typically 240ms after the supply voltage exceed...