Infineon Technologies CY7C1460KV33-167AXCT

Overview

CY7C1460KV33 from Cypress Semiconductor is a 36-Mbit (1M × 36) synchronous pipelined SRAM with NoBL™ architecture, integrated on-chip ECC, 167 MHz maximum clock frequency, 3.3-V core supply, and 3.3-V/2.5-V I/O support. It enables zero-wait-state back-to-back read/write operations in high-throughput networking line cards and packet buffering subsystems.

For engineers reviewing the CY7C1460KV33 datasheet, CY7C1460KV33 pinout, CY7C1460KV33 application, or CY7C1460KV33 equivalent, key selection criteria include burst order configuration (linear/interleaved), byte-write select mapping to DQ/DQP groups, synchronous self-timed write timing, JTAG boundary-scan capability, and ECC correction latency impact on system-level error recovery.

Technical Context

This SRAM implements fully registered synchronous interfaces: all address, control, and data inputs are latched on the rising edge of CLK (qualified by CEN), and all outputs are driven from output registers synchronized to CLK. The internal NoBL logic eliminates bus turnaround latency between consecutive reads and writes.

It supports linear or interleaved burst addressing via the MODE strap pin, provides four independent byte-write controls (BWa–BWd) for DQa–DQd and corresponding parity lines (DQPa–DQPd), and integrates IEEE 1149.1 JTAG boundary-scan for production testability - all while maintaining strict 167 MHz timing compliance with 3.4 ns max access time.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flat Package (TQFP), JEDEC-standard Pb-free, 14 mm × 20 mm body, 0.5 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1460KVE33, the CY7C1460KV33 offers identical functionality in a more manufacturable TQFP package, while IS61WV102436BLL-167TQLI trades ECC and flexible I/O voltage for lower unit cost - making it suitable only where radiation tolerance and mixed-voltage interoperability are not required.

Availability

CY7C1460KV33 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and aerospace avionics requiring stable component supply across extended product lifecycles.

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) is a fabless semiconductor company specializing in high-performance memory, microcontrollers, and programmable analog/digital ICs for industrial, automotive, and communications markets.

The CY7C1460KV33 belongs to Cypress's NoBL™ SRAM product line, designed specifically for zero-latency, high-bandwidth buffering in packet-switched networks and real-time signal processing systems.

FAQ

What is the function of the MODE pin, and how does it affect burst addressing?

The MODE pin is a static strap input that configures burst address sequencing: pulled HIGH (or left floating) selects interleaved burst order (e.g., 0, 8, 1, 9…), while pulled LOW selects linear order (e.g., 0, 1, 2, 3…). It must be set before initialization and held stable during operation; changing it mid-burst causes undefined address generation and potential data corruption.

How does the on-chip ECC operate during read and write cycles?

During writes, the ECC encoder computes and stores 4 parity bits alongside each 36-bit word. During reads, the decoder checks all 40 bits and corrects any single-bit error in real time before output registration - adding no extra clock cycles. Double-bit errors are flagged via uncorrectable error status but do not halt operation.

Can the CY7C1460KV33 interface directly with a 2.5-V FPGA I/O bank?

Yes - the VDDQ supply can be set to 2.5 V ± 0.2 V independently of the 3.3-V VDD core supply. All DQ/DQP pins, BW signals, and OE are referenced to VDDQ, enabling direct connection to 2.5-V FPGA I/O banks without level-shifting circuitry, provided the FPGA supports 2.5-V LVTTL or LVCMOS signaling.

What happens to internal state when CEN is deasserted during active operation?

When CEN is deasserted HIGH, the internal clock is masked but all registers retain their current values - address, data, and control states remain intact. The device extends the previous clock cycle indefinitely, allowing precise pause/resume control without loss of context or need for reinitialization upon CEN reassertion.