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M41ST85Y - 5.0 OR 3.0V / 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR

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M41ST85Y M41ST85W 5.0 OR 3.0V, 512 bit (64 x 8) SERIAL RTC and NVRAM SUPERVISOR FEATURES SUMMARY s 5.0 OR 3.0V OPERATING VOLTAGE s SERIAL INTERFACE SUPPORTS I2C BUS (400 KHz) s NVRAM SUPERVISOR FOR EXTERNAL LPSRAM s OPTIMIZED FOR MINIMAL INTERCONNECT TO MCU s 2.5 TO 5.5V OSCILLATOR OPERATING VOLTAGE s AUTOMATIC SWITCH-OVER and DESELECT CIRCUITRY s CHOICE OF POWER-FAIL DESELECT VOLTAGES – M41ST85Y: VCC = 4.5 to 5.5V; 4.20V ≤ VPFD ≤ 4.50V – M41ST85W: VCC = 2.7 to 3.6V; 2.55V ≤ VPFD ≤ 2.70V s 1.