SRAMbased

SRAMbased refers to systems, devices, or designs that rely on static random-access memory (SRAM) as the primary memory medium or as a central architectural component. SRAM is a volatile memory type that stores data in flip-flop circuits, commonly implemented as six-transistor cells. Compared with dynamic RAM (DRAM), SRAM provides higher speed and immediate access without refreshing; however, it is more power-intensive per bit and significantly less dense, making it more expensive per megabyte.

SRAM-based designs organize memory into arrays with decoders, sense amplifiers, and write drivers. Access times are typically in the low-nanosecond range, with predictable timing suitable for random access. Because SRAM retains data only while powered, data integrity under power loss depends on system design, unless non-volatile SRAM variants are used.

Applications include processor caches (L1, L2, and L3), register files, and high-speed buffers in CPUs, GPUs, and networking devices. SRAM is also used in on-chip memory blocks in field-programmable gate arrays (FPGAs) and as fast SRAM-based buffers in storage controllers.

Non-volatile SRAM (nvSRAM) variants exist that preserve data when power is removed by incorporating a non-volatile storage element, enabling data retention during outages while preserving much of SRAM's speed.

Advantages of SRAM-based designs include speed and low latency with a simple interface. Disadvantages include higher cost per bit, lower density, and greater power consumption when active, along with volatility. In memory hierarchies, SRAM often serves as the fastest tier, complementing DRAM, flash, and emerging non-volatile memories.