Infineon Technologies CY7C1415AV18-250BZCT

Overview

CY7C1415AV18 from Cypress Semiconductor is a 1M × 36-bit, 36-Mbit QDR-II SRAM with synchronous pipelined architecture, dual independent read/write ports, 250 MHz operation (40 ns clock period), DDR interfaces on both ports enabling 500 MT/s effective data rate, and 165-ball FBGA (15 × 17 × 1.4 mm) packaging. It delivers full data coherency and supports depth expansion via port selects in high-bandwidth networking buffer applications.

For engineers reviewing the CY7C1415AV18 datasheet, CY7C1415AV18 pinout, CY7C1415AV18 application, or CY7C1415AV18 equivalent, key selection considerations include its 1M × 36 organization, dual-clock timing (K/K and C/C), echo clocks (CQ/CQ) for source-synchronous capture, HSTL I/O compliance, and DLL-enabled precise data placement at 250 MHz.

Technical Context

The CY7C1415AV18 implements QDR-II architecture with physically separate read and write data paths, eliminating bus turnaround overhead. Its 18-bit address bus (A[17:0]) accesses a 256K × 36 internal array organized across four 256K × 36 sub-arrays, with address latching on alternate rising edges of K clock for burst addressing.

All synchronous inputs are registered to K/K clocks; read data outputs Q[35:0] are edge-aligned to C/C clocks, while echo clocks CQ/CQ track output timing for controller deskew. The integrated Delay Lock Loop (DLL) aligns internal data launch to C/C edges, and DOFF pin allows DLL disable for alternative timing modes.

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.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C362000B-250BIN and IS61WV102436B-250TQLI, the CY7C1415AV18 uniquely integrates echo clocks, DLL, and ZQ calibration-enabling robust 500 MT/s operation in production networking hardware without custom timing compensation.

Availability

CY7C1415AV18 is available at Aetrix Electronics and suitable for network packet buffering, switch fabric memory, baseband processing, and real-time video frame store applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for CY7C1415AV18 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, automotive, and industrial systems, with headquarters in San Jose, CA.

The QDR-II SRAM product line targets high-bandwidth, low-latency buffering in networking infrastructure-specifically engineered for deterministic concurrent read/write access in packet-switched systems operating at OC-192 and beyond.

FAQ

What is the minimum VDDQ voltage supported by CY7C1415AV18?

The device supports VDDQ from 1.4 V to 1.8 V. Operation below 1.4 V violates HSTL Class I specifications and risks input threshold violation, output drive strength loss, and timing parameter degradation. System design must maintain VDDQ ≥ 1.4 V with ≤ ±3% ripple.

Can CY7C1415AV18 operate without connecting the ZQ pin?

No. ZQ must be connected either to a 240 Ω resistor to ground for impedance calibration or directly to VDDQ for minimum-drive mode. Leaving ZQ floating or tied to VSS causes undefined output drive strength, violating HSTL specifications and risking signal integrity failure at 500 MT/s.

How does the DOFF pin affect timing behavior?

When DOFF is pulled LOW, the internal DLL is disabled, causing CQ/CQ to become free-running and uncoupled from C/C, and shifting output data timing to DLL-bypass parameters (tAC increased by ~0.3 ns). All DLL-dependent specs-including tCQSkew and tCQH-no longer apply.

Is CY7C1415AV18 pin-compatible with other QDR-II family members like CY7C1413AV18?

No. While all share the same 165-ball FBGA footprint, pin functions differ significantly: CY7C1415AV18 uses BWS[3:0] and Q[35:0], whereas CY7C1413AV18 uses BWS[1:0] and Q[17:0]. Address count (A[17:0] vs. A[18:0]), data width, and byte-select mapping are incompatible; PCB redesign is required for substitution.