Infineon Technologies CY7C1525V18-200BZXC

Overview

CY7C1525V18 from Cypress Semiconductor is a 72-Mbit QDR-II SRAM with 8M × 9 organization, designed for high-bandwidth packet buffering in networking ASICs and FPGA-based data path systems. It delivers 500 MT/s effective data rate via DDR interfaces on independent read/write ports, operates at 1.8 V core / 1.4–1.8 V I/O, and uses a 165-ball FBGA (15 × 17 × 1.4 mm) package.

For engineers reviewing the CY7C1525V18 datasheet, CY7C1525V18 pinout, CY7C1525V18 application, or CY7C1525V18 equivalent, key selection criteria include concurrent read/write throughput, echo clock (CQ/CQ) timing support for 250 MHz system synchronization, HSTL-18 I/O compliance, DLL-assisted data placement accuracy, and depth expansion via BWS[0] write select control.

Technical Context

The CY7C1525V18 implements QDR-II architecture with physically separate read and write data paths-no bus turnaround required. Its dual-clock domain uses K/K for address/data capture and C/C for output timing, enabling precise DDR edge alignment and eliminating skew-induced setup/hold violations in backplane or switch fabric designs.

All synchronous inputs (RPS, WPS, BWS[0], D[8:0], A[21:0]) are registered on rising K/K edges; all outputs (Q[8:0], CQ, CQ) are registered on rising C/C edges. The integrated Delay Lock Loop (DLL) dynamically aligns internal data launch to external echo clocks, ensuring ±50 ps data valid window at 250 MHz operation.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 15 mm × 17 mm × 1.4 mm body height, 0.8 mm ball pitch, RoHS-compliant Pb-free option available.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72T3615L10BG and IS61WV102418B, CY7C1525V18 uniquely supports 250 MHz DDR operation with echo clocks and DLL-enabling deterministic 500 MT/s throughput in modern packet-processing systems where timing margin is constrained.

Availability

CY7C1525V18 is available at Aetrix Electronics and suitable for telecom line card buffering, network processor interfacing, switch fabric lookup tables, and FPGA-based protocol acceleration requiring stable component supply across extended product lifecycles.

Supply support for CY7C1525V18 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 communications, industrial, and automotive markets.

CY7C1525V18 belongs to the QDR-II SRAM product line, engineered specifically for deterministic, low-latency, concurrent-access memory subsystems in packet-switched infrastructure equipment.

FAQ

What is the function of the ZQ pin on CY7C1525V18?

The ZQ pin calibrates output driver impedance for Q[8:0], CQ, and CQ signals. When connected to a 240 Ω resistor to ground, it sets output impedance to 48 Ω ±10%, matching standard 50 Ω PCB traces. Direct connection to VDDQ enables minimum impedance mode; floating or grounding ZQ is prohibited and causes undefined behavior.

Can CY7C1525V18 operate without the DLL enabled?

Yes-asserting DOFF (low) disables the internal DLL, reverting to a fixed-delay output path. However, timing parameters shift significantly: tAC increases to 2.8 ns (vs. 1.9 ns with DLL), and tDQSQ widens to ±150 ps. This mode is only recommended for systems with relaxed timing margins or where DLL lock instability occurs.

How does BWS[0] differ from NWS pins in CY7C1525V18?

CY7C1525V18 uses only BWS[0] (byte write select), not NWS pins. BWS[0] is active-low and controls the entire 9-bit D[8:0] word-no nibble-level granularity. Unlike CY7C1510V18 (which has NWS0/NWS1 for 4-bit nibbles), CY7C1525V18's 9-bit width requires byte-level masking only, simplifying write control logic in 9-bit-aligned systems.

Is CY7C1525V18 pin-compatible with other devices in the CY7C15xxV18 family?

No-while all share the same 165-ball FBGA footprint, pin functions differ across configurations. For example, CY7C1510V18 uses NWS0/NWS1 instead of BWS[0], and CY7C1514V18 adds BWS[1–3]. Address width also varies (A[21:0] for CY7C1525V18 vs. A[19:0] for CY7C1514V18), making direct replacement impossible without PCB redesign.