(China (Mainland))
Product Summary
The MK48T08B-15 is a TIMEKEEPER RAM. The MK48T08B-15 combines a 2K x 8 full CMOS SRAM, a BYTEWIDE accessible real time clock, a crystal and a long life lithium carbon mono-fluoride battery, all in a single plastic DIP package. The MK48T08B-15 is a The MK48T08B-15 is a non-vo-latile pin and function equivalent to any JEDEC standard 2K x 8 SRAM, such as the 6116 or 5517. It also easily fits into many EPROM AND EEPROM sockets, providing the non-volatility of the PROMs without any requirement for special write timing, or limitations on the number of writes that can be performed.
Parametrics
MK48T08B-15 absolute maximum ratings: (1)Vi Voltage On Any Pin Relative to Ground: -0.3 to +7.0V; (2)Ta Ambient Operating Temperature: 0 to +70℃; (3)Tstq Ambient Storage (Vcc Off, Oscillator Off)Temperature: -40 to +85℃; (4)Pd Total Device Power Dissipation: 1w; (5)l0UT Output Current Per Pin: 20 mA.
Features
MK48T08B-15 features: (1)integrated ultra low power sram, real time clock, crystal, power-fail control circuit and battery; (2)bytewide ram-like clock access; (3)bcd coded year, month, day, date, hours, minutes and seconds; (4)software controlled clock calibra­tion for high accuracy applications; (5)predicted worst case battery stor­age life of 11 years @ 70℃; (6)pin and function compatible with jedec standard 2k x 8 srams; (7)automatic power-fail chip dese­lect/write protection.; (8)two power-fail deselect trip points available : MK48T02 4.75V > Vpfd > 4.50V, MK48T12 4.50V > Vpfd > 4.20V.
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