Serial CMOS E2PROM / Precision Reset Controller and Watchdog Timer - Catalyst Semiconductor
Description
Advanced
CAT24C163(16K), CAT24C083(8K) CAT24C043(4K), CAT24C023(2K)
Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog Timer
FEATURES
s Watchdog Timer Input (WDI) s Programmable Reset Threshold s s s s s s Active High or Low Reset Outputs
400 KHz I2C Bus Compatible 2.
7 to 6 Volt Operation Low Power CMOS Technology 16 - Byte Page Write Buffer Built-in inadvertent write protection — VCC Lock Out
s s s s
— 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
DESCRIPTION
The CAT24CXX3 is a single chip solution to three popular functions of EEPROM memory, precision reset controller and watchdog timer.
The 24C163(16K), 24C083(8K), 24C043(4K) and 24C023(2K) feature a I2C Serial CMOS EEPROM Catalyst advanced CMOS technology substantially reduces device power requirements.
The 24CXX3 features a 16-byte page and is available in 8-pin DIP or 8-pin SOIC packages.
The reset function of the 24CXX3 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.
24CXX3 features active low reset on pin 2 and active high reset on pin 7.
24CXX3 features watchdog timer on the WDI input pin (pin 1).
PIN CONFIGURATION
24CXX3
WDI 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
SDA
START/STOP LOGIC
PIN FUNCTIONS
Pin Name SDA RESET/RESET SCL Vcc VSS WDI WP Function
WP
XDEC CONTROL LOGIC
E2PROM
Serial Data/Address Reset I/O Clock Input Power Supply Ground Watchdog Timer Input Write Protect
DATA IN STORAGE
HIGH VOLTAGE/ TIMING CONTROL RESET Controller
WATCHDOG
STATE COUNTERS SLAVE ADDRESS COMPARATORS
SCL
High Precision
Vcc Monitor
24C1601 BLOCK
WDI RESE...
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