Cypress Semiconductor Corp CY7C1514KV18-333BZXC

Overview

CY7C1514KV18 from Cypress Semiconductor is a 72-Mbit QDR® II SRAM with 2M × 36 organization, 333 MHz maximum operating frequency, 1.8 V core supply, and 1.4–1.8 V I/O supply. It implements separate read/write ports with DDR interfaces on both, 2-word burst architecture, and echo clocks (CQ/CQ) for high-speed data capture in networking and packet buffering applications.

For engineers reviewing the CY7C1514KV18 datasheet, CY7C1514KV18 pinout, CY7C1514KV18 application, or CY7C1514KV18 equivalent, key selection criteria include 333 MHz clock support, x36 bus width, 165-ball FBGA package, DOFF-controlled read latency (1.5-cycle or 1-cycle), and JTAG 1149.1 test access compliance.

Technical Context

The CY7C1514KV18 uses synchronous pipelined QDR II architecture with independent read and write ports sharing a multiplexed address bus. Address latching occurs on alternate rising edges of the K clock, enabling concurrent transactions without bus turnaround.

It integrates a PLL for precise data placement, supports variable-drive HSTL output buffers, and provides full data coherency via on-chip self-timed writes. Echo clocks (CQ/CQ) align with output data to simplify timing closure in systems operating at 700 MT/s effective data rate.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 15 mm × 1.4 mm body, 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 AS7C3256A-15JCIN and IS61WV102432BLL-10TLI, CY7C1514KV18 uniquely delivers true concurrent access, DDR bandwidth, and echo-clock timing - making it irreplaceable in 10G+ packet processing and real-time video pipelines where deterministic latency and >2 Gbps throughput are mandatory.

Availability

CY7C1514KV18 is available at Aetrix Electronics and suitable for packet buffering in network switches, line card memory in telecom routers, and baseband processing in 4G LTE infrastructure requiring stable component supply across extended production lifecycles.

Supply support for CY7C1514KV18 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 networking, automotive, and industrial applications, with emphasis on signal integrity and timing precision.

CY7C1514KV18 belongs to the QDR® II SRAM product line, engineered specifically for high-throughput, low-latency data buffering in packet-switched networks and real-time signal processing systems.

FAQ

What is the function of the DOFF pin on CY7C1514KV18?

The DOFF (Data Output OFFset) pin selects read latency mode: when asserted HIGH, it configures 1.5-cycle read latency for improved timing margin; when LOW, it enables 1-cycle latency for minimal delay. This setting affects internal pipeline staging but does not alter burst length, clock frequency, or data width.

How does the CY7C1514KV18 handle partial writes to its 36-bit data bus?

Partial writes are controlled by four active-low Byte Write Select signals (BWS[3:0]), each enabling one 8-bit byte lane. When a BWS signal is deasserted, the corresponding byte remains unaltered in memory. This allows selective update of sub-word fields without read-modify-write cycles or external logic.

Can CY7C1514KV18 operate with only one clock domain instead of separate K/K and C/C pairs?

Yes - the device supports single-clock-domain operation where K and C are tied together (and K and C likewise), simplifying clock tree design. In this mode, all inputs are registered on K, and all outputs are registered on C, maintaining full functionality except that echo clock alignment is relative to C rather than dedicated CQ.

What is the purpose of the NC/144M and NC/288M pins on the 165-ball FBGA package?

NC/144M and NC/288M are no-connect pins not bonded to the die; they may be left floating or tied to any voltage level (VDD, VSS, or mid-rail) without affecting operation. These pins exist for package compatibility across the QDR II family and have no electrical function in CY7C1514KV18.