Cypress Semiconductor Corp CY7C1515KV18-300BZXC

Overview

CY7C1515KV18 from Cypress Semiconductor is a 72-Mbit QDR® II SRAM with 2M × 36 organization, 300 MHz maximum clock frequency, 1.8 V core supply, and 1.4–1.8 V I/O supply. It implements separate read/write ports with DDR interfaces, four-word burst architecture, and echo clocks (CQ/CQ) for high-speed data capture in networking packet buffers and baseband memory subsystems.

For engineers reviewing the CY7C1515KV18 datasheet, CY7C1515KV18 pinout, CY7C1515KV18 application, or CY7C1515KV18 equivalent, key selection criteria include concurrent read/write bandwidth, DOFF-controlled read latency (1.5-cycle vs. 1-cycle), BWS[3:0] byte-write granularity, and 165-ball FBGA (13 × 15 × 1.4 mm) package compatibility with high-density routing constraints.

Technical Context

This device 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 K/K clocks, enabling concurrent transactions without bus turnaround.

It integrates a PLL for precise data placement, supports both single-clock (K/K only) and dual-clock (C/C + K/K) modes, and delivers 666 MT/s effective data rate via DDR on both ports - achieving 4.8 GB/s aggregate bandwidth at 300 MHz.

Key Specifications

Pinout & Package

Package: 165-ball fine-pitch ball grid array (FBGA), 13 mm × 15 mm × 1.4 mm body, RoHS-compliant, with 0.8 mm ball pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72T36120L10BG and IS61WV102436BLL-15BLI, CY7C1515KV18 delivers 4.8 GB/s aggregate bandwidth via DDR+burst, supports concurrent transactions essential for packet processing, and includes echo clocks and JTAG for production testability - making it uniquely suited for next-generation telecom and test equipment.

Availability

CY7C1515KV18 is available at Aetrix Electronics and suitable for packet buffer memory, baseband signal processing, and network processor offload applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for CY7C1515KV18 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 fabless semiconductor company specializing in high-performance memory, microcontrollers, and connectivity solutions for industrial, automotive, and communications markets.

CY7C1515KV18 belongs to Cypress's QDR II SRAM product line, engineered specifically for ultra-low-latency, high-bandwidth memory subsystems in networking infrastructure and test instrumentation where deterministic timing and concurrent access are mandatory.

FAQ

What is the function of the DOFF pin on CY7C1515KV18?

The DOFF (Data Output OFF) pin selects read latency mode: when asserted HIGH, the device operates with 1.5-cycle read latency (standard QDR II mode); when LOW, it reverts to 1-cycle latency like QDR I. This setting directly affects controller pipeline depth and must be configured before initialization and held stable during operation.

Can CY7C1515KV18 operate with only the K clock, without C/C inputs?

Yes - CY7C1515KV18 supports single-clock mode where K/K clocks drive both input sampling and output data timing. In this mode, Q[35:0] outputs are synchronized to K/K edges instead of C/C, eliminating the need for separate output clocks but reducing flexibility in deskewing multiple devices.

How does the ZQ pin enable impedance calibration?

ZQ connects to an external 240 Ω resistor to ground, allowing the device to calibrate its output driver impedance and ODT (on-die termination) values. This calibration compensates for process, voltage, and temperature variations, ensuring consistent signal integrity across operating conditions without manual PCB tuning.

Is CY7C1515KV18 pin-compatible with other devices in the CY7C15xxKV18 family?

No - while all share the same 165-ball FBGA package, pin assignments differ significantly across CY7C1526KV18 (×9), CY7C1513KV18 (×18), and CY7C1515KV18 (×36) due to differing data bus widths, BWS signal counts, and internal array mapping; direct substitution requires PCB redesign.