64K 32K 16K FEATURES X25643/45 X25323/25 X25163/65 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 • ...

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