4Kx8

4Kx8 is a memory organization describing a device that stores 4,096 locations of 8 bits each. The total storage is 4096 × 8 bits, or 32,768 bits, equivalent to 4 kilobytes. In practical terms, such a part presents an 8-bit data bus and a 12‑bit address space.

To select a location, 12 address lines are required (A0 through A11). The device is typically accompanied by control signals such as chip select, output enable, and write enable; exact pin names and timing depend on the specific device and package.

4Kx8 devices can be implemented using different memory technologies, including static RAM (SRAM), dynamic RAM (DRAM), or read-only memory (ROM). The choice affects speed, access time, volatility, and refresh requirements in the case of DRAM.

Common uses include small buffers, register files, or firmware storage in older microprocessor or embedded systems, as well as cache or scratch-pad memory in some designs. The designation describes organization rather than a single product type, so features such as speed, power consumption, and volatility vary by implementation.

Multiple 4Kx8 devices are often used together to form larger memories. When connected with a shared address and control bus, two or more 4Kx8 chips can provide greater depth while preserving an 8-bit data width; paired devices can also widen the data bus to 16 bits. With proper decoding, four or more 4Kx8 devices can scale to 16Kx8 or larger configurations.