Infineon Technologies CY7C1441KV33-133AXI

Overview

CY7C1441KV33-133AXI from Infineon Technologies (formerly Cypress) is a 36-Mbit synchronous flow-through SRAM with on-chip ECC, configured as 1M × 36 common I/O, supporting 133 MHz bus operations with 6.5 ns clock-to-output delay. It operates from a 3.3 V core supply and 2.5 V/3.3 V I/O supply, features JTAG boundary scan (IEEE 1149.1), and targets high-speed cache and buffer applications in networking and industrial controllers.

For engineers reviewing the CY7C1441KV33-133AXI datasheet, CY7C1441KV33-133AXI pinout, CY7C1441KV33-133AXI application, or CY7C1441KV33-133AXI equivalent, this page delivers verified package mapping (100-pin TQFP), burst mode control (interleaved/linear via MODE pin), synchronous self-timed write, asynchronous OE/ZZ, and ECC-enabled soft error mitigation for mission-critical embedded memory systems.

Technical Context

This SRAM implements a synchronous flow-through architecture with dual address strobes (ADSP and ADSC), a 2-bit internal burst counter, and register-controlled synchronous inputs gated by CLK's rising edge. All addresses, data inputs, CE1/CE2/CE3, BWx, BWE, GW, ADSC, ADSP, and ADV are registered on CLK rise.

Asynchronous signals OE and ZZ operate independently of CLK; OE controls I/O direction and tristate behavior, while ZZ enables low-power sleep with data retention. The device supports user-selectable burst sequences (Intel Pentium–compatible interleaved or linear) and includes dedicated byte-write registers per data nibble group with ECC encoding/decoding logic.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flat Package (TQFP), RoHS-compliant, JEDEC-standard footprint (body size 14 mm × 14 mm, 0.5 mm pitch).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C3364B-133JCIN and IS61WV102436BLL-133TQLI, CY7C1441KV33-133AXI uniquely combines JTAG testability, dual-voltage I/O, and guaranteed ECC coverage in a single JEDEC-standard TQFP - making it the only choice for DO-178C/DO-254 avionics and IEC 62304 medical designs requiring traceable memory integrity.

Availability

CY7C1441KV33-133AXI is available at Aetrix Electronics and suitable for network packet buffering, industrial PLC data caching, avionics display frame storage, and medical imaging preprocessing requiring stable component supply across extended product lifecycles.

Supply support for CY7C1441KV33-133AXI 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 is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and high-reliability memory solutions.

CY7C1441KV33-133AXI belongs to Infineon's legacy Cypress synchronous SRAM product line, engineered specifically for deterministic, low-latency memory subsystems in safety- and performance-critical infrastructure equipment.

FAQ

What is the function of the MODE pin on CY7C1441KV33-133AXI?

The MODE pin selects burst address sequencing: HIGH configures Intel Pentium–style interleaved addressing (0,2,4,6,1,3,5,7), while LOW enables linear addressing (0,1,2,3,4,5,6,7). This setting is sampled asynchronously at power-up and remains latched until reset. It directly determines how the internal 2-bit burst counter increments during ADV-driven cycles, ensuring compatibility with specific CPU cache controllers.

Does CY7C1441KV33-133AXI support 2.5 V-only operation?

Yes - the device supports independent 2.5 V I/O supply (VDDQ) while maintaining 3.3 V core (VDD). All I/O pins (DQx, DQPx, BWx, OE, etc.) are JESD8-5 compliant at 2.5 V, enabling direct interface to 2.5 V FPGAs or ASICs. Core logic remains powered at 3.3 V to ensure stable array access timing; mixing supplies requires separate decoupling and ground isolation per JEDEC guidelines.

How does the ZZ sleep mode affect timing and power consumption?

When ZZ is driven HIGH, the device enters non-time-critical sleep: core current drops to ≤5 mA (typical), but data is retained indefinitely. All synchronous inputs (CLK, ADSP, etc.) are ignored; asynchronous OE and ZZ remain functional. Exit time from ZZ is 20 ns max - faster than full initialization - allowing rapid wake-up for burst-oriented workloads without retraining or recalibration.

Can CY7C1441KV33-133AXI be used without external ECC logic?

Yes - the on-chip SEC-DED ECC encoder/decoder operates autonomously. During writes, ECC bits are generated and stored alongside data; during reads, syndrome decoding occurs transparently. No external logic or software intervention is required. The ECC engine covers the entire 36-bit data word and is enabled by default - disabling it is not supported in this device variant.