BUY DS1244Y-120 https://www.utsource.net/itm/p/218543.html
256K NV SRAM with Phantom Clock
Description: The DS1244Y-120 is a nonvolatile static RAM (NVSRAM) from Dallas Semiconductor. It is a 28-pin DIP package. Features: - Low power consumption - Fast access time - High reliability - Nonvolatile memory - Low voltage operation Applications: - Automotive systems - Industrial control systems - Robotics - Medical systems - Data logging systems - Security systems
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