CAT15016

CAT15008, CAT15016 Voltage Supervisor with 8-Kb and 16-Kb SPI 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 = 1V „ 10MHz SPI compatible „ 32-byte page write buffer „ Low power CMOS technology „ 1,000,000 Program/Erase cycles „ 100 year data retention „ Industrial temperature range DESCRIPTION The CAT15008/16 (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 SPI bus serial interface. The CAT15008/16 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 „ RoHS-compliant 8-pin SOIC package 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 For Ordering Information details, see page 14. become active, preventing the system microcontroller, www.DataSheet4U.com ASIC or peripherals from operating. Reset signals become inactive typically 240ms after the supply PIN CONFIGURATION voltage exceeds the reset...