M48T08 is a 5V, 64 Kbit (8 Kb x 8) TIMEKEEPER® SRAM that integrates ultra-low power SRAM, real-time clock, power-fail control circuit, and battery. It features BYTEWIDE™ RAM-like clock access, BCD coded year, month, day, date, hours, minutes, and seconds, typical clock accuracy of ±1 minute a month at 25°C, automatic power-fail chip deselect and WRITE protection, software controlled clock calibration for high accuracy applications, and a self-contained battery and crystal in the CAPHAT™ DIP package.
The M48T08, M48T08Y, and M48T18 are 8 K x 8 non-volatile static RAMs and real-time clocks that are pin and function compatible with the DS1643. These devices integrate an ultra-low power SRAM, a real-time clock, and a power-fail control circuit with a battery backup. They offer BYTEWIDE RAM-like clock access with BCD-coded year, month, day, date, hours, minutes, and seconds.
| Memory Capacity | 64 Kbit (8 Kb x 8) |
|---|---|
| Supply Voltage | 4.75 to 5.5 V |
| Clock Accuracy | ±1 minute a month |
| Operating Temperature | 0 to 70 °C |
| Package Types | PCDIP28, SOH28 |
Yes, the M48T08/18/08Y is a non-volatile pin and function equivalent to any JEDEC standard 8 K x 8 SRAM and is pin and function compatible with the DS1643.
The typical clock accuracy is ±1 minute a month at 25 °C.
Yes, the PCDIP28 package houses the silicon with a quartz crystal and a long-life lithium button cell in a single package.