Cypress Semiconductor Corp CY7C1514V18-167BZC

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 buffer applications.

For engineers reviewing the CY7C1514V18 datasheet, CY7C1514V18 pinout, CY7C1514V18 application, or CY7C1514V18 equivalent, this device is selected for low-latency, concurrent memory access in packet forwarding engines, FPGA co-processor buffers, and high-speed test equipment where bus turnaround elimination and deterministic burst timing are critical.

Technical Context

The CY7C1514V18 uses QDR-II architecture with physically separate read and write data paths, eliminating bus contention and enabling true simultaneous read/write operations. Its 2-word burst transfers 72 bits per cycle (36-bit × 2) on both ports, synchronized to rising edges of K/K (input) and C/C (output) clocks.

It integrates a Delay Lock Loop (DLL) for precise data placement, HSTL-compatible variable-drive outputs, JTAG 1149.1 test access, and four byte write selects (BWS[3:0]) for granular 8-bit write control across its 36-bit data width. Address inputs (A[19:0]) are multiplexed for both ports, reducing pin count while maintaining full 2M-depth addressing.

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 IDT72T36150L10BG and ISSI IS61WV102436B, the CY7C1514V18 delivers double the density and 67% higher bandwidth with deterministic DDR timing - essential for real-time packet processing and streaming applications requiring zero bus turnaround.

Availability

CY7C1514V18 is available at Aetrix Electronics and suitable for high-speed networking equipment, FPGA-based prototyping platforms, optical transport systems, and automated test equipment requiring stable component supply and long-term obsolescence management.

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) designs high-performance memory and programmable solutions for communications, industrial, and automotive markets.

The QDR-II SRAM product line targets applications demanding ultra-low latency, concurrent memory access, and deterministic timing - specifically engineered for network processors, packet buffers, and high-speed test instrumentation.

FAQ

What is the minimum VDDQ voltage supported by CY7C1514V18?

The device supports VDDQ from 1.4 V to 1.8 V. Operation below 1.4 V is not guaranteed and may cause HSTL output drive failure or input threshold violation. The 1.4 V lower limit ensures proper termination matching and signal integrity for DDR interfaces at 167 MHz.

Can CY7C1514V18 operate without the DLL enabled?

Yes - pulling DOFF low disables the internal DLL. However, all AC timing parameters change significantly: tAC increases by up to 1.2 ns, and CQ/CQ phase alignment to C/C degrades. This mode is only recommended for marginal timing validation, not production use.

How many address bits are required for CY7C1514V18's 2M × 36 configuration?

20 address bits (A[19:0]) are required. The device internally organizes memory as two 1M × 36 arrays; A[19] selects the array, and A[18:0] addresses within each array. All addresses are multiplexed across read and write ports using K and K clocks.

Is ZQ pin mandatory for operation?

Yes - ZQ must be connected either to an external resistor to ground (for impedance tuning) or directly to VDDQ (for minimum output drive). Leaving ZQ floating or connecting it to GND violates the absolute maximum ratings and risks output driver damage or undefined timing behavior.