CY7C1298F

The CY7C1298F SRAM integrates 65,536x18 SRAM cells with advanced synchronous peripheral circuitry and a two-bit counter for internal burst operation. All synchronous inputs are gated by registers controlled by a positive-edge-triggered Clock Input (CLK). The synchronous inputs include all addresses, all data inputs, address-pipelining Chip Enable (CE1), depth-expansion Chip Enables (CE2 and CE3), Burst Control inputs CY7C1298F (ADSC, ADSP, and ADV), Write Enables (BW[A:B], and BWE), and Global Write (GW). Asynchronous inputs include the Output Enable (OE) and the ZZ pin. Addresses and chip enables are registered at rising edge of clock when either Address Strobe Processor (ADSP) or Address Strobe Controller (ADSC) are active. Subsequent burst addresses of CY7C1298F can be internally generated as controlled by the Advance pin (ADV).

Address, data inputs, and write controls are registered on-chip to initiate a self-timed Write cycle.This part of CY7C1298F supports Byte Write operations (see Pin Descriptions and Truth Table for further details). Write cycles can be one to two bytes wide as controlled by the byte write control inputs. GW active LOW causes all bytes to be written.CY7C1298F incorporates an additional pipelined enable register CY7C1298F which delays turning off the output buffers an additional cycle when a deselect is executed.This feature allows depth expansion without penalizing system performance.

The CY7C1298F operates from a +3.3V core power supply while all outputs operate with a +3.3V supply. All inputs and outputs are JEDEC-standard JESD8-5-compatible.