FEATURES
Precision Power Supply Voltage Monitor — 5V, 3.3V and 3V systems — Five threshold voltage options Active High or Low Reset — Valid reset guaranteed at VCC = 1V 400kHz I2C Bus 2.7V to 5.5V Operation Low power CMOS technology 16-Byte Page Write Buffer Built-in inadvertent write protection — WP pin (CAT1025) 1,000,000 Program/Erase cycles Manual Reset Input 100 year data retention Industrial and extended temperature ranges Green packages available with NiPdAu Lead finished DESCRIPTION
A 2k-bit serial EEPROM memory and a system power supervisor with brown-out protection are integrated together in low power CMOS techno– logy. Memory interface is via a 400kHz I2C bus. The CAT1025 also has a Write Protect input (WP). Write operations are disabled if WP is connected to a logic high. The CAT1024 also provides a precision VCC sense ¯¯¯¯¯¯ output and does not circuit, but has only a RESET have a Write Protect input. For Ordering Information details, see page 19. The power supply monitor and reset circuit protect memory and system controllers during power up/down and against brownout conditions.
Catalyst Semiconductor
