Infineon Technologies CY7C1515AV18-200BZXI

Overview

CY7C1515AV18 from Cypress Semiconductor is a 72-Mbit QDR-II SRAM with 2M × 36 organization, 1.8V core supply, and dual DDR interfaces supporting 300 MHz clock (600 Mbps per pin). It implements separate read/write ports with echo clocks (CQ/CQ) and DLL-enabled 1.5-cycle read latency, deployed in high-bandwidth packet buffering for network switches and routers.

For engineers reviewing the CY7C1515AV18 datasheet, CY7C1515AV18 pinout, CY7C1515AV18 application, or CY7C1515AV18 equivalent, key selection criteria include x36 bus width, 165-ball FBGA package, HSTL I/O compatibility, DLL-on/off mode timing behavior, and depth-expansion support via BWS[3:0] and port selects.

Technical Context

The CY7C1515AV18 uses QDR-II architecture with fully independent synchronous read and write ports sharing a multiplexed 19-bit address bus (A[18:0]). Each port operates on dedicated DDR clock pairs: K/K for input sampling and C/C for output latching, enabling concurrent 4-word bursts without bus turnaround.

It integrates a Delay Lock Loop (DLL) to align internal timing for precise 1.5-cycle read latency at 300 MHz; when DLL is disabled (DOFF = LOW), it reverts to QDR-I timing with 1-cycle latency and max 167 MHz operation. Output impedance is calibrated via ZQ pin using external resistor to VSS.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 15 × 17 mm body, 1.4 mm height, 0.8 mm ball pitch, JEDEC MO-245 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72T36150 and IS61WV102436B, CY7C1515AV18 delivers double the density and 80% higher bandwidth with DLL-assisted timing closure-critical for next-gen networking and test equipment where concurrent access and sub-ns jitter control are mandatory.

Availability

CY7C1515AV18 is available at Aetrix Electronics and suitable for network switch fabric design, high-speed ATE memory subsystems, telecom baseband buffering, and FPGA-based video processing requiring stable component supply and long-term industrial availability.

Supply support for CY7C1515AV18 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 demanding embedded and communications applications.

CY7C1515AV18 belongs to the QDR-II SRAM product line, engineered specifically for systems requiring deterministic low-latency, concurrent read/write access, and scalable bandwidth in networking, test, and signal processing infrastructure.

FAQ

What is the minimum VDDQ voltage supported for CY7C1515AV18 operation?

The device supports VDDQ from 1.4 V to 1.8 V. At 1.4 V, HSTL Class I output drive strength is maintained, and AC timing parameters remain valid per datasheet specifications. Operation below 1.4 V is not characterized and may violate setup/hold margins or cause output driver malfunction.

Can CY7C1515AV18 operate without connecting the ZQ pin?

No. ZQ must be connected either to a resistor-to-ground (for impedance tuning) or directly to VDDQ (for minimum output impedance mode). Leaving ZQ unconnected or tied to VSS violates the absolute maximum ratings and risks undefined output drive behavior and signal integrity failure.

How does DOFF affect read latency and maximum operating frequency?

When DOFF is pulled LOW, the DLL disables and the device operates in QDR-I mode: read latency reduces to 1 cycle, but maximum frequency drops to 167 MHz. All DLL-related timing parameters (e.g., tDQSQ, tKQ) change; the device must be re-characterized using QDR-I AC specs from the same datasheet.

Is the 165-ball FBGA footprint compatible with other QDR-II SRAMs in the CY7C15xxAV18 family?

Yes-the pinout is identical across CY7C1511AV18, CY7C1526AV18, CY7C1513AV18, and CY7C1515AV18 in the 165-ball FBGA package. This enables drop-in replacement within the same density configuration group, provided address/data bus width and BWS pin mapping match the target application's requirements.