Infineon Technologies CY7C1526KV18-300BZXC

Overview

CY7C1526KV18-300BZXC from Cypress Semiconductor is an 8M × 9 (72-Mbit), 333 MHz QDR® II SRAM with separate read/write ports, DDR interfaces on both ports (666 MHz data rate), 1.8 V core supply, and 1.4–1.8 V I/O supply. It implements four-word burst architecture with 1.5-cycle read latency when DOFF is HIGH and supports concurrent read/write transactions in high-bandwidth networking buffers and packet memory applications.

For engineers reviewing the CY7C1526KV18-300BZXC datasheet, CY7C1526KV18-300BZXC pinout, CY7C1526KV18-300BZXC application, or CY7C1526KV18-300BZXC equivalent, key selection criteria include its 165-ball FBGA package, echo clocks (CQ/CQ), JTAG 1149.1 compliance, programmable impedance, and synchronous self-timed write capability.

Technical Context

The device uses a dual-clock DDR architecture with independent K/K inputs for address/data capture and C/C outputs for data launch, enabling precise timing control and eliminating bus turnaround. Its internal 2M × 9 × 4 array organization supports depth expansion via RPS/WPS and byte-level write masking through BWS0.

It integrates a PLL for accurate data placement, HSTL-compatible output drivers with variable drive strength, and echo clocks (CQ/CQ) to simplify source-synchronous data capture at 666 MHz. The DOFF pin selects between 1.5-cycle (HIGH) and 1-cycle (LOW) read latency modes, aligning with system timing budgets.

Key Specifications

Pinout & Package

Package: 165-ball fine-pitch ball grid array (FBGA), 13 mm × 15 mm × 1.4 mm body, 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 IS61WV102418B, CY7C1526KV18-300BZXC delivers 4× higher density, 1.67× higher clock rate, and unique echo-clock timing support-making it the only option capable of sustaining 666 MT/s full-duplex operation in telecom and test equipment designs.

Availability

CY7C1526KV18-300BZXC is available at Aetrix Electronics and suitable for high-speed packet buffering, network switch fabric memory, and telecom baseband processing requiring stable component supply and long-term industrial availability.

Supply support for CY7C1526KV18-300BZXC 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.

CY7C1526KV18 belongs to Cypress's QDR II SRAM product line, engineered specifically for deterministic, low-latency, full-duplex memory access in packet infrastructure and high-speed test systems.

FAQ

What is the function of the DOFF pin on CY7C1526KV18-300BZXC?

The DOFF (Data Output OFF) pin configures read latency mode: when asserted HIGH, it enables 1.5-cycle read latency for optimal QDR II performance; when LOW, it reverts to 1-cycle latency compatible with legacy QDR I timing. This setting is sampled synchronously on the rising edge of the K clock and remains active until changed.

Can CY7C1526KV18-300BZXC operate with only a single clock domain?

Yes. The device supports single-clock-domain operation by tying C to K and C to K, allowing all data transfers to be referenced to the K clock only. In this mode, Q[8:0] outputs are launched on K/K edges instead of C/C, simplifying clock distribution at the cost of reduced deskew capability.

How does the BWS0 signal function in the CY7C1526KV18-300BZXC?

BWS0 (Byte Write Select 0) is an active-low synchronous control that enables or masks the entire 9-bit D[8:0] input word during write operations. When deasserted (HIGH), the corresponding write transaction is ignored; when asserted (LOW), D[8:0] is written to the addressed location. Unlike wider variants, CY7C1526KV18 uses only BWS0 - no BWS1–BWS3.

Is the 165-ball FBGA package of CY7C1526KV18-300BZXC lead-free?

Yes. The -BZXC suffix denotes a Pb-free, RoHS-compliant 165-ball FBGA package with NiPdAu surface finish. Cypress specifies this variant for industrial temperature range (–40°C to +85°C) and guarantees compatibility with standard lead-free reflow profiles (J-STD-020).