CAT25C32X

Advanced CAT25CXXX Supervisory Circuits with SPI Serial E2PROM, Precision Reset Controller and Watchdog Timer FEATURES s 10 MHz SPI Compatible s 1.8 to 6.0 Volt Operation s Hardware and Software Protection s Zero Standby Current s Low Power CMOS Technology s SPI Modes (0,0 &1,1) s Commercial, Industrial and Automotive s Watchdog Timer on CS s 1,000,000 Program/Erase Cycles s 100 Year Data Retention s Self-Timed Write Cycle s 8-Pin DIP/SOIC, 16-Pin SOIC and 14-Pin TSSOP s Page Write Buffer s Block Write Protection Temperature Ranges s Active High or Low Reset Outputs – Protect 1/4, 1/2 or all of E2PROM Array s Programmable Watchdog Timer s Built-in inadvertent Write Protection – Precision Power Supply Voltage Monitoring – 5V, 3.3V, 3V and 1.8V Options – VCC Lock Out DESCRIPTION The CAT25CXXX is a single chip solution to three popular functions of EEPROM Memory, precision reset controller and watchdog timer. The EEPROM Memory is a 2K/4K/8K/16K/32K-Bit SPI Serial CMOS E2PROM internally organized as 256x8/512x8/1024x8/2048x8/ 4096x8 bits. Catalyst’s advanced CMOS Technology substantially reduces device power requirements. The 2K/4K devices feature a 16-byte page write buffer. The 8K/16K/32K devices feature a 32-byte page write buffer.The device operates via the SPI bus serial interface and is enabled though a Chip Select (CS). In addition to the Chip Select, the clock input (SCK), data in (SI) and data out (SO) are required to access the device. The reset function of the 2...