Infineon Technologies CY7C1371KV33-133AXC

Overview

CY7C1371KV33-133AXC from Cypress Semiconductor is a 18-Mbit synchronous flow-through SRAM with NoBL™ architecture, supporting true back-to-back read/write operations at 133 MHz with zero wait states and 6.5 ns clock-to-output delay. It features on-chip ECC for soft error correction, 3.3 V/2.5 V I/O (VDDQ), and three chip enables for depth expansion - deployed in high-throughput networking packet buffers and real-time DSP memory subsystems.

For engineers reviewing the CY7C1371KV33-133AXC datasheet, CY7C1371KV33-133AXC pinout, CY7C1371KV33-133AXC application, or CY7C1371KV33-133AXC equivalent, key selection criteria include burst order control (linear/interleaved), synchronous self-timed write timing, byte-write capability, and ZZ sleep mode power management - all critical for deterministic latency in telecom and test equipment memory interfaces.

Technical Context

The device implements a synchronous flow-through architecture where all inputs (address, WE, BWx, ADV/LD) are registered on the rising edge of CLK, qualified by CEN. Internal burst logic supports linear or interleaved addressing based on MODE pin state, enabling predictable access patterns for cache-like behavior.

It integrates ECC encoding/decoding logic to detect and correct single-bit errors in real time, reducing SER without external logic. Output drivers are synchronously tristated during write data cycles and CE deselection, eliminating bus contention without requiring external OE timing coordination.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 × 20 × 1.4 mm), RoHS-compliant, JEDEC-standard footprint with exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2115L133PF and IS61WV102436BLL-133TQLI, CY7C1371KV33-133AXC uniquely delivers integrated ECC, NoBL™ zero-latency operation, and configurable ×36/×18 organization - making it the only choice for safety-critical, high-throughput memory subsystems requiring guaranteed data integrity and deterministic timing.

Availability

CY7C1371KV33-133AXC is available at Aetrix Electronics and suitable for networking packet buffers, real-time DSP memory subsystems, and industrial motion controller buffers requiring stable component supply and long-term lifecycle assurance.

Supply support for CY7C1371KV33-133AXC 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, PSoC® programmable systems-on-chip, and USB-C/USB-PD solutions.

CY7C1371KV33 belongs to Cypress's NoBL™ SRAM product line, engineered for deterministic latency and unlimited back-to-back read/write throughput in telecom infrastructure and test instrumentation.

FAQ

What is the function of the MODE pin on CY7C1371KV33-133AXC?

The MODE pin is a strap input that configures burst addressing order: tied to GND for linear burst sequence (0,1,2,3…), or to VDD/floating for interleaved burst (0,2,4,6…,1,3,5,7…). It is sampled at power-up and remains static during operation - no runtime reconfiguration is supported.

How does the ZZ sleep mode affect data retention and wake-up timing?

In ZZ mode (pin driven HIGH), the device enters a non-time-critical sleep state with full data retention and reduced current draw. Wake-up occurs synchronously on the next valid CLK edge after ZZ returns LOW, with no additional latency beyond standard access timing - no initialization sequence is required.

Can CY7C1371KV33-133AXC operate with 2.5 V VDDQ while using 3.3 V VDD?

Yes - VDD (core) must be 3.3 V ±0.3 V, while VDDQ (I/O) supports 2.5 V ±0.2 V or 3.3 V ±0.3 V independently. This allows interfacing with 2.5 V FPGAs or ASICs while maintaining full 133 MHz performance and 6.5 ns tCO specification.

Is the ECC functionality optional or always active?

ECC is always active and transparent - all reads return corrected data, and all writes automatically generate updated parity bits. There is no register or pin to disable ECC; it operates at full speed with no performance penalty or additional latency.