Infineon Technologies CY7C1415KV18-250BZI

Overview

CY7C1415KV18 from Cypress Semiconductor is a 1 M × 36, 36-Mbit QDR® II SRAM with four-word burst architecture, 250 MHz maximum operating frequency (400 Mbps per pin), 1.8 V core supply, and 1.4–1.8 V I/O supply. It features separate read/write ports, echo clocks (CQ/CQ), and programmable DOFF for 1-cycle or 1.5-cycle read latency-used in high-bandwidth packet buffering in network line cards.

For engineers reviewing the CY7C1415KV18 datasheet, CY7C1415KV18 pinout, CY7C1415KV18 application, or CY7C1415KV18 equivalent, key selection criteria include DDR timing margin at 250 MHz, FBGA-165 package compatibility, QDR II depth expansion support via BWS[3:0], and DOFF-configurable read latency for system-level synchronization.

Technical Context

The CY7C1415KV18 implements true dual-port synchronous pipelined access: independent K/K clocks drive write address/data latching, while C/C clocks control output register timing. Its 1 M × 36 organization uses 18 address bits (A[17:0]) and supports full coherency-every read returns the most recently written data across both ports.

It integrates a phase-locked loop (PLL) for precise internal clock alignment, HSTL-class variable-drive output buffers, and IEEE 1149.1 JTAG boundary scan. The device operates in single-clock mode (K = C) or dual-clock mode (K/K and C/C), with echo clocks CQ/CQ enabling source-synchronous capture at the controller.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 15 mm × 1.4 mm, 0.8 mm ball pitch, JEDEC MO-270AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72T36120L10BG and IS61WV102436B, CY7C1415KV18 uniquely delivers 250 MHz DDR operation with configurable latency and echo clocks-making it optimal for next-gen networking and radar systems demanding >3 Gbps sustained throughput and sub-10 ns timing determinism.

Availability

CY7C1415KV18 is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, radar signal processing, and industrial real-time control requiring stable component supply across extended temperature ranges (–40°C to +85°C).

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) designs high-performance memory and programmable solutions for networking, automotive, and industrial applications.

The QDR® II SRAM product line targets high-speed data-path applications requiring deterministic latency, concurrent access, and DDR bandwidth-specifically optimized for switch fabric, packet buffer, and real-time signal processing subsystems.

FAQ

What is the function of the DOFF pin on CY7C1415KV18?

The DOFF (Data Output Fall-off) pin configures read latency: when asserted HIGH, it enables 1.5-cycle latency for improved timing margin in high-skew systems; when LOW, it selects 1-cycle latency for minimal pipeline depth. This setting directly affects the number of clock cycles between address assertion and valid Q[35:0] output, and is sampled synchronously on the K clock edge.

How does the CY7C1415KV18 support depth expansion?

Depth expansion is achieved using independent port-select signals WPS (write port select) and RPS (read port select), both active-low. Multiple CY7C1415KV18 devices can be stacked with shared address and data buses, while individual WPS/RPS lines enable selective access-allowing seamless memory capacity scaling without external address decoding logic.

Can CY7C1415KV18 operate with only one clock signal?

Yes-the device supports single-clock mode where K = C and K = C. In this configuration, all input and output registers are clocked from the same pair, simplifying board layout at the cost of reduced timing flexibility. Echo clocks CQ/CQ remain functional and aligned to the single clock domain, preserving source-synchronous capture capability.

What is the purpose of BWS[3:0] in CY7C1415KV18?

BWS[3:0] (Byte Write Select) enables selective 9-bit byte writes to the 36-bit data bus: BWS0 controls D[8:0], BWS1 controls D[17:9], BWS2 controls D[26:18], and BWS3 controls D[35:27]. When a BWS signal is deasserted (HIGH), its corresponding 9-bit lane retains prior content-eliminating need for read-modify-write sequences during partial updates.