Infineon Technologies CY7C1514V18-167BZI

Overview

CY7C1514V18 from Cypress Semiconductor is a 72-Mbit QDR-II SRAM with 2M × 36 organization, 167 MHz maximum operating frequency, 1.8 V core supply (±0.1 V), and 1.4–1.8 V I/O supply (VDDQ). It implements dual independent DDR read/write ports with echo clocks (CQ/CQ) and supports synchronous self-timed writes in high-bandwidth networking buffers and packet memory applications.

For engineers reviewing the CY7C1514V18 datasheet, CY7C1514V18 pinout, CY7C1514V18 application, or CY7C1514V18 equivalent, key selection criteria include burst depth (2-word), byte write select support (BWS[3:0]), FBGA-165 package compatibility, HSTL-18 I/O compliance, and DLL-enabled timing accuracy for 500 MT/s data transfer.

Technical Context

The CY7C1514V18 uses QDR-II architecture with physically separate read and write data paths, eliminating bus turnaround overhead. Its 20-bit address bus accesses a 1M × 36 internal array per bank (dual-bank configuration), latched on alternating rising edges of K/K clocks.

Read and write operations are fully asynchronous between ports but synchronized to dedicated clock domains: K/K control input registration, while C/C drive output registers and echo clocks CQ/CQ-enabling precise source-synchronous capture at the controller with ±50 ps skew tolerance.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 15 mm × 17 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 IDT72T36120L10BG and ISSI IS61WV102436B, CY7C1514V18 delivers higher sustained bandwidth (500 vs. 200/332 MT/s), integrated timing aids (CQ/CQ, DLL), and HSTL-18 compatibility-making it optimal for new designs targeting 10G+ switch fabric and telecom line card applications.

Availability

CY7C1514V18 is available at Aetrix Electronics and suitable for network packet buffering, high-speed switch fabric memory, telecom line card buffering, and real-time video frame storage requiring stable component supply across multi-year production cycles.

Supply support for CY7C1514V18 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 programmable logic solutions for communications and industrial systems.

CY7C1514V18 belongs to Cypress's QDR-II SRAM product line, designed specifically for ultra-low-latency, concurrent-access memory subsystems in networking ASICs, telecom infrastructure, and high-end video processing platforms.

FAQ

What is the function of the ZQ pin on CY7C1514V18?

The ZQ pin calibrates the output driver impedance of Q[35:0], CQ, and CQ to match the system data bus. It must be connected to a precision resistor (typically 100 Ω) tied to ground; alternatively, connecting ZQ directly to VDDQ enables minimum-impedance mode. Leaving ZQ unconnected or tying it to GND violates specification and causes undefined output drive strength.

Can CY7C1514V18 operate with only a single clock domain?

Yes-CY7C1514V18 supports single-clock mode where K/K serve both input sampling and output driving. In this mode, C/C are unused, and CQ/CQ are generated relative to K/K. Output timing references shift accordingly, and the DLL remains active unless disabled via DOFF. This mode simplifies clock routing but reduces maximum achievable frequency due to added clock path skew.

How does byte write select (BWS) work for the 36-bit data width?

BWS[3:0] independently enables four 9-bit byte groups: BWS0 → D[8:0], BWS1 → D[17:9], BWS2 → D[26:18], BWS3 → D[35:27]. Each is sampled synchronously with D[35:0] on the rising edge of K/K. Deasserting any BWS pin leaves its corresponding 9-bit segment unchanged during the write-enabling efficient partial-word updates without read-modify-write cycles.

Is CY7C1514V18 pin-compatible with other devices in the CY7C15xxV18 family?

No-while all variants share the 165-ball FBGA package and core pin functions, pin assignments differ significantly across configurations. For example, CY7C1510V18 (8M×8) uses NWS[1:0], whereas CY7C1514V18 uses BWS[3:0]; address count varies (22 vs. 20 bits); and Q/D bus widths require different ball mappings. Board layout must be specific to CY7C1514V18.