CY7C2268KV18, CY7C2270KV18: 36-Mbit DDR II+ SRAM Two-Word Burst Architecture (2.5 Cycle Read Latency) with ODT | Cypress Semiconductor
CY7C2268KV18, CY7C2270KV18: 36-Mbit DDR II+ SRAM Two-Word Burst Architecture (2.5 Cycle Read Latency) with ODT
36-Mbit DDR II+ SRAM Two-Word Burst Architecture (2.5 Cycle Read Latency) with ODT
- 36 Mbit density (2 M × 18, 1 M × 36)
- 550 MHz clock for high bandwidth
- Two-word burst for reducing address bus frequency
- Double data rate (DDR) interfaces (data transferred at 1100 MHz) at 550 MHz
- Available in 2.5 clock cycle latency
- Two input clocks (K and K) for precise DDR timing
- SRAM uses rising edges only
- Echo clocks (CQ and CQ) simplify data capture in high speed systems
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The CY7C2268KV18, and CY7C2270KV18 are 1.8 V synchronous pipelined SRAMs equipped with DDR II+ architecture. The DDR II+ consists of an SRAM core with advanced synchronous peripheral circuitry. Addresses for read and write are latched on alternate rising edges of the input (K) clock. Write data is registered on the rising edges of both K and K. Read data is driven on the rising edges of K and K. Each address location is associated with two 18-bit words (CY7C2268KV18), or 36-bit words (CY7C2270KV18) that burst sequentially into or out of the device.
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