Infineon Technologies CY7C1514KV18-300BZI

Overview

CY7C1514KV18 from Cypress Semiconductor is a 72-Mbit QDR® II SRAM with 2M × 36 organization, 300 MHz clock operation (700 Mbps DDR data rate), 1.8V core supply, and 1.4–1.8V I/O supply. It implements separate read/write ports with echo clocks (CQ/CQ), DOFF-controlled 1.5-cycle or 1-cycle read latency, and synchronous self-timed writes - deployed in high-bandwidth packet buffering for network switches.

For engineers reviewing the CY7C1514KV18 datasheet, CY7C1514KV18 pinout, CY7C1514KV18 application, or CY7C1514KV18 equivalent, key selection criteria include burst depth (2-word), port independence, HSTL-18 I/O compatibility, FBGA-165 package footprint, and QDR II timing compliance for deterministic low-latency memory access in telecom infrastructure.

Technical Context

The CY7C1514KV18 uses dual independent DDR interfaces: read data transfers on rising edges of C/C clocks with echo-clock (CQ) alignment, while write data is sampled on K/K rising edges. Address latching occurs on alternating K-clock edges for shared address bus operation across both ports.

Its internal PLL ensures precise data placement relative to echo clocks, and the DOFF pin selects between 1.5-cycle (DOFF = HIGH) and 1-cycle (DOFF = LOW) read latency modes - maintaining full data coherency without bus turnaround overhead.

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.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C362000B-300BIN and IS61WV204836BLL-300TQLI, the CY7C1514KV18 uniquely delivers true QDR II functionality - including echo clocks, selectable read latency, and DDR interfaces - making it irreplaceable in systems demanding guaranteed concurrent access and source-synchronous timing at 700 Mbps.

Availability

CY7C1514KV18 is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, baseband processing cache, and radar signal processing buffer applications requiring stable component supply and long-term industrial availability.

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) is a U.S.-based semiconductor company specializing in high-performance memory, microcontrollers, and connectivity solutions for industrial, automotive, and communications markets.

The CY7C1514KV18 belongs to Cypress's QDR® II SRAM product line, engineered specifically for deterministic, high-bandwidth memory access in networking and telecom infrastructure where bus turnaround elimination and sub-nanosecond timing predictability are mandatory.

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 enables 1.5-cycle read latency for improved timing margin; when LOW, it configures 1-cycle latency for minimal access delay. This setting affects internal pipeline depth but does not alter burst length, clock frequency, or data width.

Can CY7C1514KV18 operate with only one clock domain (K = C)?

Yes - the device supports single-clock-domain operation where K and C are tied together, and K and C are tied together. In this mode, all registers (address, data input, data output) are clocked from the same edge-aligned sources, simplifying board layout at the expense of maximum achievable bandwidth and skew tolerance.

How many byte-write enable signals does CY7C1514KV18 support, and what do they control?

CY7C1514KV18 supports four byte-write select signals: BWS0 through BWS3. Each controls an 8-bit segment of the 36-bit D[35:0] bus - BWS0 for D[7:0], BWS1 for D[15:8], BWS2 for D[23:16], and BWS3 for D[31:24]. D[35:32] are unmasked and always written when WPS is active.

Is the ZQ pin required for normal operation of CY7C1514KV18?

Yes - the ZQ pin must be connected to a 240Ω resistor to ground for on-die impedance calibration of HSTL-18 output drivers. Without this connection, output drive strength varies unpredictably, risking signal integrity violations at 700 Mbps DDR rates and failing HSTL compliance.