Description
8K x 8 Bit 4K x 8 Bit 2K x 8 Bit Programmable Watchdog Timer & VCC Supervisory Circuit w/Serial E2PROM - Programmable Watchdog Timer - Low Vcc Detection and Reset Assertion -Reset Signal Valid to Vcc=1V - Save Critical Data With Block LockTM Protection -Block LockTM Protect 0, 1/4, 1/2 or all of Serial E2PROM Memory Array - In Circuit Programmable ROM Mode - Long Battery Life With Low Power Consumption -<50µA Max Standby Current, Watchdog On -<1µA Max Standby Current, Watchdog Off -<5mA Max Active Current during Write -<400µA Max Active Current during Read - 1.8V to 3.6V, 2.7V to 5.5V and 4.5V to 5.5V Power Supply Operation - 2MHz Clock Rate - Minimize Programming Time -32 Byte Page Write Mode -Self-Timed Write Cycle -5ms Write Cycle Time (Typical) - SPI Modes (0,0 & 1,1) - Built-in Inadvertent Write Protection -Power-Up/Power-Down Protection Circuitry -Write Enable Latch -Write Protect Pin - High Reliability - Available Packages -14-Lead SOIC (X2564x) -14-Lead TSSOP (X2532x, X2516x) -8-Lead SOIC (X2532x, X2516x) SI SO SCK CS DATA REGISTER MAND DECODE & CONTROL LOGIC RESET CONTROL X - DECODE LOGIC These devices bine three popular functions, Watchdog Timer, Supply Voltage Supervision, and Serial E2PROM Memory in one package.
Key Features
- X25643/45 X25323/25 X25163/65
