Infineon Technologies CY7C1415KV18-300BZXC

Overview

CY7C1415KV18 from Cypress Semiconductor is a 1 M × 36, 36-Mbit QDR® II SRAM with four-word burst architecture, 333 MHz clock operation (666 MHz DDR data rate), 1.8 V core supply, and 1.4–1.8 V I/O supply. It delivers concurrent read/write transactions via independent ports and supports depth expansion using port-select signals in high-bandwidth networking and packet buffering applications.

For engineers reviewing the CY7C1415KV18 datasheet, CY7C1415KV18 pinout, CY7C1415KV18 application, or CY7C1415KV18 equivalent, key selection criteria include its 1 M × 36 organization, echo clock (CQ/CQ) support for timing margin, DOFF-configurable 1-cycle vs. 1.5-cycle read latency, and 165-ball FBGA package compatibility with high-speed PCB layout constraints.

Technical Context

The CY7C1415KV18 implements QDR II architecture with physically separate read and write data paths, eliminating bus turnaround delays. Its memory array is organized as four 256K × 36 sub-arrays, accessed via a shared 18-bit address bus latched on rising edges of the K clock.

It uses dual input clocks (K/K) for address/data capture and dual output clocks (C/C) with echo clocks (CQ/CQ) to align data valid windows at the receiver. A built-in PLL ensures precise data placement relative to output clocks, and synchronous self-timed writes guarantee deterministic write completion without external handshaking.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 15 mm × 1.4 mm body, 0.8 mm ball pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-bandwidth dual-port SRAM applications.

Compared with IDT72T36150 and IS61WV102436B, CY7C1415KV18 uniquely offers DOFF-configurable latency and integrated echo clocks-enabling both low-latency control-plane use and robust high-speed data-plane capture without external timing compensation.

Availability

CY7C1415KV18 is available at Aetrix Electronics and suitable for high-speed packet buffering, network processor caching, telecom line card memory, and low-latency trading engine applications requiring stable component supply across extended production lifecycles.

Supply support for CY7C1415KV18 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) is a fabless semiconductor company specializing in high-performance memory, microcontrollers, and connectivity solutions for industrial, automotive, and communications markets.

The QDR® II SRAM product line was designed specifically for bandwidth-constrained, low-latency applications in networking infrastructure-delivering deterministic dual-port access without arbitration overhead or bus turnaround penalties.

FAQ

What is the function of the DOFF pin on CY7C1415KV18?

The DOFF (Data Output OFFset) pin configures read latency: when asserted LOW, it enables 1-cycle read latency for minimal access delay; when HIGH, it enables 1.5-cycle latency to accommodate tighter setup/hold margins in high-jitter clock domains. This is a static configuration set at power-up and does not affect write timing or burst behavior.

How does the CY7C1415KV18 handle partial writes to its 36-bit data bus?

Partial writes are controlled by the BWS[3:0] (Byte Write Select) inputs, each enabling one 8-bit byte of the 36-bit D[35:0] bus. When a BWS bit is deasserted (HIGH), the corresponding byte remains unaltered-no read-modify-write is required. This enables efficient header field updates in packet processing without corrupting adjacent payload bytes.

Can CY7C1415KV18 operate with only a single clock source instead of differential K/K and C/C pairs?

Yes-the device supports single-clock mode where K drives both input functions and C drives all output registers. In this mode, echo clocks (CQ/CQ) remain functional but are derived from C. However, differential clocking is strongly recommended for >250 MHz operation to maintain timing margin and reduce EMI in dense PCB layouts.

What is the purpose of the NC/72M, NC/144M, and NC/288M pins on the 165-ball FBGA?

These pins are no-connects tied internally to die substrate and electrically isolated from active circuitry. They may be left floating, tied to ground, or connected to VDDQ-no electrical effect results. Their presence accommodates pinout compatibility across the CY7C14xxKV18 family (×8, ×9, ×18, ×36) within the same FBGA footprint.