What the DS1230AB-100+ is and where it fits
The Maxim Integrated DS1230AB-100+ is a 256Kbit Non-Volatile SRAM (NVSRAM) organized as 32K x 8 bits. It combines the fast read/write cycle of a standard SRAM — 100 ns access time — with internal lithium backup that retains data when the main supply drops, so no external battery or EEPROM wear-leveling is needed. The parallel interface connects directly to a microcontroller or FPGA memory bus. Typical applications include configuration storage, calibration tables, boot code shadowing, and data logging in commercial-temperature equipment such as office automation, point-of-sale terminals, and industrial controllers that do not require extended temperature range.
Lifecycle and sourcing — active, no obsolescence concern
The DS1230AB-100+ carries an Active product status, meaning Maxim Integrated (now part of Analog Devices) continues to manufacture it. For a BOM line, this is a low-risk single-source part — the NVSRAM architecture is proprietary to a handful of vendors, so plan for sole-source procurement.