CAT24C021/022(2K)

` Watchdog Timer on SDA for 24CXX1
` Programmable Reset Threshold
` 400 KHz I2C Bus Compatible
` 2.7 to 6 Volt Operation
` Low Power CMOS Technology n 16 - Byte Page Write Buffer
` Built-in inadvertent write protection - VCC Lock Out
`  Active High or Low Reset Outputs - Precision Power Supply Voltage Monitoring - 5V, 3.3V and 3V options
`   1,000,000 Program/Erase Cycles
` 100 Year Data Retention
` 8-Pin DIP or 8-Pin SOIC
` Commercial, Industrial and Automotive Temperature Ranges

Temperature Under Bias....................55°C to +125°C
Storage Temperature........................ 65°C to +150°C
Voltage on Any Pin with
Respect to Ground(1) ..............2.0V to +VCC + 2.0V
VCC with Respect to Ground..................2.0V to +7.0V
Package Power Dissipation
Capability (Ta = 25°C)1.0W.................................1.0W
Lead Soldering Temperature (10 secs)...............300°C
Output Short Circuit Current(2) ..........................100mA

The CAT24CXXX is a single chip solution to three popular functions of EEPROM memory, precision reset controller and watchdog timer. The 24C161/162(16K), 24C081/082(8K), 24C041/042(4K) and 24C021/022(2K) feature a I2C Serial CMOS EEPROM. Catalyst's advanced CMOS technology substantially reduces device power requirements. The 24CXXX features a 16-byte page and is available in 8-pin DIP or 8-pin SOIC packages. The reset function of the 24CXXX protects the system during brown out and power up/down conditions. During system failure the watchdog timer feature protects the microcontroller with a reset signal. 24CXXX features active low reset on pin 2 and active high reset on pin 7. 24CXX1 features watchdog timer on the SDA line. 24CXX2 does not feature the watchdog timer function.