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M41T94
512 Bit (64 bit x8) SERIAL RTC (SPI) SRAM
FEATURES SUMMARY s 2.7 TO 5.5V OPERATING VOLTAGE
s s
Figure 1. 16-pin SOIC Package
SERIAL PERIPHERAL INTERFACE (SPI) 2.5 TO 5.5V OSCILLATOR OPERATING VOLTAGE AUTOMATIC SWITCH-OVER and DESELECT CIRCUITRY CHOICE OF POWER-FAIL DESELECT VOLTAGES (VCC = 2.7 to 5.5V): – THS = VSS; 2.55V ≤ VPFD ≤ 2.70V – THS = VCC; 4.20V ≤ VPFD ≤ 4.50V Figure 2. 28-pin SOIC Package
16 1
s
SO16 (MQ)
s
s
COUNTERS FOR TENTHS/HUNDREDTHS OF SECONDS, SECONDS, MINUTES, HOURS, DAY, DATE, MONTH, YEAR, and CENTURY 44 BYTES OF GENERAL PURPOSE RAM PROGRAMMABLE ALARM and INTERRUPT FUNCTION (VALID EVEN DURING BATTERY BACK-UP MODE) WATCHDOG TIMER MICROPROCESSOR POWER-ON RESET BATTERY LOW FLAG LOW OPERATING CURRENT OF 2.