24C021 Datasheet | Catalyst Semiconductor

.Data Sheet.co.kr Advanced CAT24C161/162(16K), CAT24C081/082(8K) CAT24C041/042(4K), CAT24C021/022(2K) Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog Timer Features s Watchdog Timer on SDA for 24CXX1 s Programmable Reset Threshold s 400 KHz I2C Bus patible s 2.7 to 6 Volt Operation s Low Power CMOS Technology s 16 - Byte Page Write Buffer s Built-in inadvertent write protection s s s s s Active High or Low Reset Outputs - VCC Lock Out - 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 mercial, Industrial and Automotive Temperature Ranges DESCRIPTION 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. PIN CONFIGURATION 24CXX1/XX2- DC RESET WP VSS VCC RESET SCL SDA BLOCK DIAGRAM EXTERNAL LOAD DOUT ACK VCC VSS WORD ADDRESS BUFFERS COLUMN DECODERS SENSE AMPS SHIFT REGISTERS - All products offered in P and J packages START/STOP LOGIC PIN FUNCTIONS XDEC E2PROM Pin Name SDA RESET/RESET SCL Vcc DC VSS WP Function Serial Data/Address Reset I/O Clock Input Power Supply Do Not Connect Ground Write Protect CONTROL LOGIC DATA IN STORAGE HIGH VOLTAGE/ TIMING CONTROL RESET Controller Only...