Infineon Technologies CY7C1514KV18-333BZC

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 (±0.1 V), and 1.4–1.8 V I/O supply. It implements separate read/write ports, DDR interfaces on both ports (700 Mbps effective data rate), and 2-word burst architecture for high-bandwidth networking buffers in packet switching ASICs.

For engineers reviewing the CY7C1514KV18 datasheet, CY7C1514KV18 pinout, CY7C1514KV18 application, or CY7C1514KV18 equivalent, key selection criteria include concurrent read/write throughput, echo clock (CQ) timing margin, DOFF-controlled read latency (1.5-cycle vs. 1-cycle), byte write select (BWS[3:0]) granularity, and 165-ball FBGA package compatibility with high-speed PCB layout constraints.

Technical Context

The CY7C1514KV18 uses synchronous pipelined QDR II architecture with independent read and write ports sharing a multiplexed address bus latched on alternating edges of the K clock. Its dual DDR interfaces transfer data on every rising edge of K/K (write) and C/C (read), achieving 700 MT/s effective bandwidth without bus turnaround.

It integrates a PLL for precise data placement, supports JTAG 1149.1 boundary scan, and features programmable HSTL output drive strength. Read latency is configurable via DOFF: 1.5 cycles (DOFF = HIGH) or 1 cycle (DOFF = LOW), enabling trade-offs between timing margin and pipeline depth in real-time traffic management systems.

Key Specifications

Pinout & Package

165-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 15 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 CY7C1512KV18, the CY7C1514KV18 delivers identical density in half the device count for 36-bit interfaces, reducing routing congestion and skew. Versus AS7C3256A-15JCIN, it provides 30× higher effective bandwidth and deterministic latency essential for real-time networking.

Availability

CY7C1514KV18 is available at Aetrix Electronics and suitable for 40G switch fabric design, network processor acceleration, high-speed test instrumentation, and telecom line card development requiring stable component supply and long-term lifecycle assurance.

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 systems, with emphasis on signal integrity and timing precision.

The QDR II SRAM product line targets high-speed packet processing infrastructure, delivering deterministic latency, concurrent access, and DDR bandwidth for ASIC/FPGA co-processing in carrier-grade equipment.

FAQ

What is the function of the DOFF pin on CY7C1514KV18?

The DOFF (Data Output OFFset) pin configures read latency: when asserted HIGH, it enables 1.5-cycle latency for improved timing margin; when LOW, it selects 1-cycle latency for minimal pipeline delay. This setting directly affects the number of clock cycles between address assertion and valid Q[35:0] output, and must be synchronized with system clock domain crossing logic.

How does the CY7C1514KV18 handle partial-word writes?

It uses four active-low byte write select signals (BWS[3:0]), each controlling one 8-bit byte of the 36-bit D[35:0] bus. When a BWS signal is deasserted, the corresponding byte is masked during write operations, preserving existing data in those bits - eliminating need for read-modify-write sequences in metadata update scenarios.

Can the CY7C1514KV18 operate with only a single clock domain?

Yes - the device supports single-clock mode where K and C are tied together (and K and C likewise), simplifying system clocking. In this configuration, the internal PLL remains active for data placement accuracy, but echo clocks (CQ/CQ) still provide source-synchronous capture aids for high-speed receivers.

What is the purpose of the NC/144M and NC/288M pins?

These 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. Their presence accommodates pinout compatibility across the QDR II family (e.g., CY7C1510KV18 uses NC/144M for different internal routing), ensuring consistent PCB footprint reuse.