Infineon Technologies CY7C1423KV18-300BZXCT

Overview

CY7C1423KV18-300BZXCT from Cypress Semiconductor is a 36-Mbit (2M × 18) DDR II SIO synchronous SRAM with two-word burst architecture, 300 MHz maximum clock frequency, 1.8 V core supply, and HSTL I/O compatible with 1.5 V or 1.8 V VDDQ. It supports 1.5-cycle read latency (DOFF = HIGH) or 1-cycle latency (DOFF = LOW), and features echo clocks CQ/CQ for simplified high-speed data capture in networking and packet buffering systems.

For engineers reviewing the CY7C1423KV18-300BZXCT datasheet, CY7C1423KV18-300BZXCT pinout, CY7C1423KV18-300BZXCT application, or CY7C1423KV18-300BZXCT equivalent, key selection criteria include DDR II SIO timing compliance, dual-clock domain support (K/K and C/C), programmable output impedance via ZQ, and FBGA-165 package compatibility with high-density memory subsystem layouts.

Technical Context

This SRAM implements a pipelined, synchronous architecture with physically separate read and write ports-eliminating bus turnaround delays. It uses rising edges of complementary K/K clocks to latch addresses and write data, and rising edges of C/C clocks (or K/K in single-clock mode) to drive read data, enabling precise DDR timing control.

The device integrates a PLL for accurate data placement, JTAG 1149.1 test access, and on-chip self-timed write circuitry. Echo clocks CQ/CQ are phase-aligned to C/C and referenced to output data Q[17:0], allowing controller-side deskewing without per-device delay calibration.

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 finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C336200B-300BIN and IS61WV102418BLL-300TQLI, CY7C1423KV18-300BZXCT uniquely delivers concurrent read/write via separate I/O, echo-clock–assisted data capture, and on-die impedance tuning - essential for deterministic 1.2 GB/s operation in modern packet-processing hardware.

Availability

CY7C1423KV18-300BZXCT is available at Aetrix Electronics and suitable for high-speed packet buffering, network switch fabric memory, telecom baseband processing, and ATE pattern memory requiring stable component supply and long-term industrial availability.

Supply support for CY7C1423KV18-300BZXCT 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.

CY7C1423KV18 belongs to Cypress's DDR II SIO SRAM product line, engineered specifically for deterministic, low-latency, high-bandwidth memory subsystems in networking and test equipment where bus turnaround overhead and timing uncertainty must be eliminated.

FAQ

What is the function of the DOFF pin on CY7C1423KV18-300BZXCT?

The DOFF (Data Output OFFset) pin selects read latency mode: when asserted HIGH, it enables 1.5-cycle read latency for improved timing margin under voltage/temperature variation; when LOW, it configures 1-cycle latency for minimal pipeline delay. This setting is sampled at power-up and latched internally - no runtime reconfiguration is supported.

Can CY7C1423KV18-300BZXCT operate with only K and K clocks, without C and C?

Yes - in single-clock mode, the device uses K and K to drive both input sampling and output data (Q[17:0]), eliminating the need for separate C/C clocks. However, echo clocks CQ/CQ remain active and synchronized to K/K, preserving their utility for timing reference even without dedicated output clocks.

How does ZQ pin calibration affect signal integrity in high-speed designs?

ZQ calibration adjusts the output driver strength of Q[17:0] and CQ/CQ pins to match the characteristic impedance of the PCB trace (typically 50 Ω). By connecting an external resistor RQ to ground, the device sets its output impedance to 0.2 × RQ - e.g., 25 Ω for 125 Ω RQ - reducing reflections and improving eye diagram margins at 600 Mbps per pin.

Is CY7C1423KV18-300BZXCT pin-compatible with CY7C1423KV18-333BZXCT?

Yes - both share identical 165-ball FBGA package (13 × 15 × 1.4 mm), identical pinout, and identical electrical interface. The -300 and -333 suffixes denote maximum rated clock frequencies (300 MHz vs. 333 MHz); the -300 variant meets all timing specifications up to 300 MHz and may operate reliably at lower frequencies with relaxed timing margins.