HMNR1288D

Note : Permanent device damage may occur if Absolute Maximum Ratings are exceeded.Functional operation should be restricted to the Recommended DC Operating Conditions detailed in this data sheet.Exposure to higher than recommended voltage for extended periods of time could affect device reliability.
(1) Soldering temperature not to exceed 260° C for 10 seconds (Total thermal budget not to exceed 150° C for longer than 30 seconds).
Caution : Negative undershoots below 0.3V are not allowed on any pin while in the Battery Back -up mode.

The HMNR1288D(V) TIMEKEEPER SRAM is a 128Kb x 8 non-volatile static RAM and real time clock organized as 131,072 words by 8 bits. The special DIP package provides a fully integrated battery back-up memory and real time clock solution. It directly replaces industry standard 128Kbit x 8 SRAMs. It also provides the non-volatility of Flash without any requirement for special WRITE timing or limitations on the number of WRITEs that can be performed.