Infineon Technologies CY7C1460KV33-167AXIT

Overview

CY7C1460KV33 from Cypress Semiconductor is a 36-Mbit (1M × 36) synchronous pipelined SRAM with NoBL™ architecture, integrated ECC, 3.3-V core supply, and 3.3-V/2.5-V I/O support. It delivers zero wait-state 167-MHz bus operation (3.4 ns access), fully registered I/O, and byte-write capability for high-throughput memory subsystems in telecom line cards and network packet buffers.

For engineers reviewing the CY7C1460KV33 datasheet, CY7C1460KV33 pinout, CY7C1460KV33 application, or CY7C1460KV33 equivalent, this device is selected for deterministic latency, burst-read/write coherency, ECC-enabled data integrity in mission-critical embedded memory systems requiring back-to-back read/write transitions without turnaround cycles.

Technical Context

The CY7C1460KV33 implements a fully synchronous, clocked pipeline with input and output registers triggered on the rising edge of CLK, qualified by CEN. All address, control, and data inputs are latched synchronously, eliminating asynchronous timing windows.

Its NoBL™ logic enables true back-to-back read/write operations with no bus turnaround delay; burst modes (linear or interleaved) are selected via the MODE strap pin, and on-chip ECC encoding/decoding operates transparently during every access to correct single-bit errors and detect double-bit errors.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (JEDEC MO-145AC), Pb-free, 14 mm × 14 mm body, 0.5 mm lead pitch, exposed pad optional.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous pipelined SRAM applications.

Compared with CY7C1460KVE33, the CY7C1460KV33 trades 33 MHz bandwidth for relaxed timing margins and lower power; versus IS61WV102436BLL-167TQLI, it provides hardware ECC transparency and Cypress's mature NoBL timing model - critical for safety-certified systems.

Availability

CY7C1460KV33 is available at Aetrix Electronics and suitable for telecom infrastructure, network test equipment, and industrial control systems requiring stable component supply, long-lifecycle support, and guaranteed ECC-enabled memory performance.

Supply support for CY7C1460KV33 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, with focus on reliability and integration.

This device belongs to Cypress's NoBL™ SRAM product line, engineered specifically for zero-turnaround, high-throughput memory subsystems in networking and real-time signal processing applications.

FAQ

What is the function of the MODE pin on CY7C1460KV33?

The MODE pin is a strap input that selects burst address order: pulled HIGH (or left floating) enables interleaved burst mode; pulled LOW selects linear burst mode. It must be held static during operation and is sampled at power-up or reset. This setting determines how the internal address counter increments during burst accesses and affects compatibility with specific memory controller burst protocols.

Does CY7C1460KV33 require external termination resistors for its data bus?

No external series or parallel termination is required for standard 100-pin TQFP layout with controlled-impedance PCB traces. The device features internally calibrated output drivers compatible with 50 Ω transmission lines under 3.3-V VDDQ operation. Layout best practices (length matching, ground plane, short stubs) remain essential for signal integrity at 167 MHz.

How does the on-chip ECC operate during a partial byte write?

During partial writes enabled by BWa–BWd, ECC recalculates parity only over the written bytes and their associated parity bits (e.g., writing DQa/DQPa updates only those 9+1 bits). The unchanged data bytes retain their original parity, ensuring full SEC-DED coverage across the entire 36-bit word after each write - no software intervention or full-word rewrite is needed.

Can CY7C1460KV33 be used with a 2.5-V memory controller without level shifters?

Yes - when VDDQ is supplied at 2.5 V, the device's I/Os meet SSTL-2 input thresholds and drive strengths, allowing direct interface to 2.5-V controllers. Core logic remains at 3.3 V (VDD), and the datasheet specifies separate AC/DC parameters for 2.5-V VDDQ operation, including reduced output swing and adjusted timing margins.