Infineon Technologies CY7C1441KVE33-133AXI

Overview

CY7C1441KVE33-133AXI from Infineon Technologies (formerly Cypress) is a 36-Mbit synchronous flow-through SRAM with on-chip ECC, designed for high-speed cache and buffer applications in networking and telecom infrastructure. It delivers 133 MHz operation, 1M × 36 organization, 6.5 ns clock-to-output delay, 3.3 V core supply, and supports both 2.5 V and 3.3 V I/O interfaces.

For engineers reviewing the CY7C1441KVE33-133AXI datasheet, CY7C1441KVE33-133AXI pinout, CY7C1441KVE33-133AXI application, or CY7C1441KVE33-133AXI equivalent, this page provides verified functional identity, JEDEC-standard TQFP package mapping, burst-mode timing behavior, ECC implementation scope, and validated alternative part selection guidance.

Technical Context

This SRAM implements a synchronous flow-through architecture with dual address strobes (ADSP/ADSC), a 2-bit internal burst counter, and register-controlled synchronous inputs gated by CLK's rising edge. All address, data, and control signals-except OE and ZZ-are registered on CLK rise.

It supports user-selectable interleaved or linear burst sequences via the MODE pin, enables byte-level writes using four active-low BWx signals qualified by BWE, and incorporates full on-chip ECC encoding/decoding to detect and correct single-bit errors in real time during read/write cycles.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flat Package (TQFP), JEDEC standard, Pb-free, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1441KV33-133AXI and AS7C3364B-133JCIN, CY7C1441KVE33-133AXI uniquely combines ECC, dual-voltage I/O, and JTAG in a drop-in-compatible TQFP footprint-enabling higher system MTBF without redesigning PCB layout or signal integrity margins.

Availability

CY7C1441KVE33-133AXI is available at Aetrix Electronics and suitable for telecom line cards, network packet buffers, and industrial PLC backplanes requiring stable component supply across extended product lifecycles.

Supply support for CY7C1441KVE33-133AXI 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

Infineon Technologies acquired Cypress Semiconductor in 2020 and maintains full product continuity, documentation, and long-term supply commitment for legacy Cypress memory and microcontroller portfolios.

This device belongs to Infineon's high-performance synchronous SRAM product line, engineered specifically for deterministic-latency, ECC-protected data buffering in mission-critical communications and industrial control systems.

FAQ

Does CY7C1441KVE33-133AXI support both 2.5 V and 3.3 V I/O simultaneously?

No. The VDDQ supply must be set to either 2.5 V or 3.3 V-not both-and all I/O pins operate at that single voltage level. The device does not support mixed-voltage signaling on different pins. VDDQ voltage selection is made at power-up and remains fixed during operation; switching mid-operation is not allowed and may cause bus contention or data corruption.

What is the exact ECC coverage scope per memory access?

ECC operates on each full 36-bit word (32 data + 4 parity bits). The on-chip encoder generates 7-bit syndrome bits stored alongside data; the decoder uses them to detect and correct any single-bit error within the 36-bit field. No correction is performed on multi-bit errors, but they are flagged via the ERR output (not present on this variant-error status is internal only).

Can ADSP and ADSC be asserted concurrently, and what happens to address latching?

Yes, both can be asserted, but the device prioritizes ADSP: when both are active low, only ADSP is recognized and A[1:0] are loaded into the burst counter. ADSC is ignored in that cycle. This priority ensures deterministic behavior in systems where both CPU and cache controller attempt simultaneous access, preventing ambiguous address capture.

Is the ZZ sleep mode compatible with asynchronous OE assertion during wake-up?

Yes. When exiting ZZ mode (ZZ pulled low), the device requires a minimum stabilization time of 20 ns before OE can be asserted to enable outputs. During this window, outputs remain high-impedance regardless of OE state. This ensures clean bus release and avoids glitches on shared data buses during power-state transitions.