Non-volatile SRAM with 25 ns access time
The Infineon CY14B101LL-SP25XC is a 1 Mbit non-volatile SRAM organized as 128K x 8 bits, with a 25 ns access time. It combines the fast read/write speed of an SRAM with non-volatile storage, retaining data when power is removed — a key characteristic for applications that require both speed and data persistence without a battery backup. Typical uses include industrial controllers, RAID storage buffers, networking equipment, and metering systems where configuration data or transaction logs must survive power cycles.
25 ns access time — bus timing fit
The 25 ns access time means the part can keep up with moderate-speed microcontrollers and DSPs without inserting wait states. For a system running a 40 MHz bus (25 ns cycle), this part matches cycle-for-cycle. At higher clock rates, the access time becomes the bottleneck — a 10 ns SRAM sibling would be needed for a 100 MHz bus. The parallel interface is straightforward to connect: address, data, chip enable, and output enable lines map directly to a memory controller.
Bulk packaging — assembly line note
For pick-and-place assembly, plan for tube or tray handling. MSL level and bake requirements should be verified from the part marking before reflow.