* Integrated ultra low power SRAM, real-time clock, power-fail control circuit, and battery * 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 * WRITE protect VPFD= power-fail deselect voltage): * M48T08: VCC= 4.75 to 5.5 V; 4.5 V ≤ VPFD≤ 4.75 V * M48T18/T08Y: VCC= 4.5 to 5.5 V; 4.2 V ≤ VPFD≤ 4.5 V * Software controlled clock calibration for high accuracy applications * Self-contained battery and crystal in the CAPHAT™DIP package * Packaging includes a 28-lead SOIC and SNAPHAT® top (to be ordered separately) * SOIC package provides direct connection for a snaphat top which contains the battery and crystal * Pin and function compatible with DS1643 and JEDEC standard 8 K x 8 SRAMs * RoHS compliant * Lead-free second level interconnect
The M48T18-100PC1 is a TIMEKEEPER® Non-volatile Static RAM and Real-time Clock which is pin and functional compatible with the DS1642. This is a non-volatile pin and function equivalent to any JEDEC standard 8K x 8 SRAM. It also easily fits into many ROM, EPROM and EEPROM sockets providing the non-volatility of PROMs without any requirement for special write timing or limitations on the number of write that can be performed.
The M48T08-100PC1 is a 5V, 64Kbit (8Kb x 8) TIMEKEEPER non volatile static RAM and real time clock in 28 pin DIP package. This real time clock is pin and function compatible with DS1643. It provides highly integrated battery backed memory and real time clock solution. The M48T08-100PC1 is a non volatile pin and function equivalent to any JEDEC standard 8K x 8 SRAM. It also easily fits into many ROM, EPROM and EEPROM sockets providing the non-volatility of PROMs without any requirement for special WRITE timing or limitations on number of WRITEs that can be performed.