Cypress Semiconductor Corp CY7C1514AV18-200BZC

Overview

CY7C1514AV18-200BZC from Cypress Semiconductor is a 72-Mbit QDR® II SRAM with 2M × 36 organization, 1.8V core supply, and 200 MHz maximum operating frequency. It features dual independent read/write ports, DDR interfaces on both ports (400 Mbps effective data rate per port), 1.5-cycle read latency with DLL enabled, and HSTL-compatible I/Os for high-speed networking memory buffers.

For engineers reviewing the CY7C1514AV18-200BZC datasheet, CY7C1514AV18-200BZC pinout, CY7C1514AV18-200BZC application, or CY7C1514AV18-200BZC equivalent, key selection criteria include burst depth (2-word), byte write select granularity (four 9-bit bytes), echo clock support (CQ/CQ), JTAG 1149.1 test access, and FBGA-165 package compatibility with high-density PCB routing.

Technical Context

The CY7C1514AV18-200BZC implements QDR II architecture with physically separate read and write data paths, eliminating bus turnaround overhead. Its synchronous pipelined design uses rising edges of K/K clocks for address/data capture and C/C clocks for output timing, enabling concurrent read and write operations without arbitration delay.

It supports DLL-enabled operation for precise 1.5-cycle read latency at 200 MHz, or DLL-off QDR I mode with 1-cycle latency up to 167 MHz. Output impedance is tunable via ZQ pin (0.2×RQ), and all I/Os comply with HSTL Class I specifications with VDDQ = 1.4–1.8 V.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 15 mm × 17 mm × 1.4 mm, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar QDR II SRAM applications.

Compared with IDT72T3615L10BG and ISSI IS61WV102436B, the CY7C1514AV18-200BZC offers native echo clock support and ZQ-based output tuning-critical for robust 200 MHz system-level timing closure-while maintaining full functional equivalence in burst depth, port independence, and byte write capability.

Availability

CY7C1514AV18-200BZC is available at Aetrix Electronics and suitable for high-speed network packet buffering, telecom line card memory, and baseband processing applications requiring stable component supply and long-term production continuity.

Supply support for CY7C1514AV18-200BZC 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 high-bandwidth, low-latency memory subsystems in networking ASICs and FPGA-based infrastructure-optimized for deterministic timing, concurrent access, and signal integrity at >200 MHz.

FAQ

What is the function of the DOFF pin on CY7C1514AV18-200BZC?

The DOFF (DLL Turn Off) pin is an active-low control that disables the internal Delay Lock Loop. When pulled LOW, the device operates in QDR I mode with 1-cycle read latency and maximum frequency reduced to 167 MHz. For standard QDR II operation at 200 MHz with 1.5-cycle latency, DOFF must be held HIGH via a ≤10 kΩ pull-up resistor to VDDQ.

How does the ZQ pin affect output drive strength?

The ZQ pin connects to an external resistor (RQ) tied to ground to calibrate output driver impedance. The device sets CQ, CQ, and Q[35:0] output impedance to 0.2 × RQ. If ZQ is tied directly to VDDQ, minimum impedance mode is enabled. Connecting ZQ to GND or leaving it floating violates the specification and may cause signal integrity failures.

Can CY7C1514AV18-200BZC operate with only one clock pair?

Yes-it supports single-clock mode using only K and K to control both input and output registers. In this configuration, C and C are unused, and data is clocked out on K/K edges. However, echo clocks (CQ/CQ) and deskew benefits are lost, and timing margins tighten due to lack of dedicated output clock path.

What is the purpose of BWS[3:0] in CY7C1514AV18-200BZC?

BWS[3:0] are active-low byte write select signals controlling four independent 9-bit segments of the 36-bit data bus. Each asserted BWS[x] enables writing to its corresponding 9-bit byte; deassertion preserves existing data in that byte. This enables efficient partial writes without requiring read-modify-write sequences.