Infineon Technologies CY7C1418AV18-267BZXC

Overview

CY7C1418AV18-267BZXC from Cypress Semiconductor is a 36 Mbit (2M × 18) synchronous pipelined DDR II SRAM with two-word burst architecture, 300 MHz K-clock operation, 600 Mbps DDR data transfer rate, and 1.8 V core supply. It serves as high-bandwidth buffer memory in network packet processors requiring low-latency, burst-aligned data access.

For engineers reviewing the CY7C1418AV18-267BZXC datasheet, CY7C1418AV18-267BZXC pinout, CY7C1418AV18-267BZXC application, or CY7C1418AV18-267BZXC equivalent, key selection criteria include DDR II timing compliance, HSTL I/O compatibility, DLL-enabled data placement accuracy, and FBGA-165 mechanical fit for dense routing.

Technical Context

This SRAM implements a synchronous pipelined architecture with dual input clocks (K/K) for address/control latching and dual output clocks (C/C) for data strobing. Its internal burst counter uses A0 to generate sequential 18-bit word addresses on alternate K edges, enabling two-word bursts without external address incrementing.

The device integrates echo clocks (CQ/CQ) synchronized to C/C for source-synchronous data capture, and supports both dual-clock (DDR) and single-clock modes via strap configuration. All writes are internally self-timed, and ZQ pin enables dynamic output impedance tuning to match system bus termination.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 15 mm × 17 mm footprint, 1.4 mm height, RoHS-compliant Pb-free option available.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C362000B-20BIN and IS61WV102418BLL-10BLI, CY7C1418AV18-267BZXC delivers 3× higher effective bandwidth via DDR + burst, eliminates external skew compensation with CQ/CQ, and enables deterministic timing closure in 300 MHz systems - critical for next-gen networking and test equipment.

Availability

CY7C1418AV18-267BZXC is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, and industrial PLC data logging requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for CY7C1418AV18-267BZXC 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 industrial, automotive, and communications markets.

CY7C1418AV18 belongs to the DDR II SyncBurst SRAM product line, engineered specifically for deterministic, high-bandwidth buffering in packet-switched infrastructure where burst efficiency and source-synchronous timing are mandatory.

FAQ

What is the function of the DOFF pin?

The DOFF pin disables the internal Delay Lock Loop when pulled LOW. This bypasses DLL-based data alignment, reverting timing to basic K/K-driven output registration. Use only when DLL-induced jitter exceeds board-level skew benefits - timing parameters shift significantly and require revalidation per the "DLL Off" section of the datasheet.

Can CY7C1418AV18-267BZXC operate without external C and C clocks?

Yes - it supports single-clock mode. Tie C and C HIGH at power-on to configure the device to use K/K for both input sampling and output driving. In this mode, all timing references derive from K/K, eliminating need for separate output clocks but forfeiting C/C deskew capability and echo clock advantages.

How does ZQ calibration affect signal integrity?

ZQ calibration adjusts output driver strength to match the system's data bus characteristic impedance. Connecting ZQ to a precision resistor to ground sets output impedance to 0.2 × RQ, minimizing reflections and improving eye diagram margin. Leaving ZQ unconnected or tied to GND violates specification and causes undefined output behavior.

Is the CY7C1418AV18-267BZXC pin-compatible with CY7C1420AV18?

No - they are not pin-compatible. CY7C1418AV18 (2M × 18) uses DQ[17:0], BWS[1:0], and 21 address bits (A[20:0]), while CY7C1420AV18 (1M × 36) uses DQ[35:0], BWS[3:0], and 20 address bits (A[19:0]). Pin assignments differ significantly in ball map, especially for data, byte selects, and address lines.