(Hong Kong)
Product Summary
The MK48T18B-20 is a low power 512 bit static CMOS RAM organized as 64 words by 8 bits. A built-in 32.768 kHz oscillator (external crystal controlled) and the first 8 bytes of the RAM are used for the clock/calendar function and are configured in binary coded decimal (BCD) format.
Parametrics
MK48T18B-20 absolute maximum ratings: (1)Ambient Operating Temperature: 0 to 70–40 to 85°C; (2)Storage Temperature (VCC Off, Oscillator Off): –55 to 125 °C; (3)Input or Output Voltages: –0.3 to 7 V; (4)Supply Voltage: –0.3 to 7 V.
Features
MK48T18B-20 features: (1)counters for seconds, minutes,hours, day, date, month and years; (2)software clock calibration; (3)automatic power-fail detect and switch circuitry; (4)i2c bus compatible; (5)56 bytes of general purpose ram; (6)ultra-low battery supply current of 500na.
Diagrams
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MK48T08 |
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