Infineon Technologies CY7C1383KV33-133AXC

Overview

CY7C1383KV33-133AXC from Cypress Semiconductor is a 18-Mbit (1M × 18) synchronous flow-through SRAM with on-chip ECC, designed for high-speed cache and buffer applications in networking and telecom infrastructure. It supports 133 MHz bus operation, delivers 6.5 ns clock-to-output delay, operates from a 3.3 V core supply (VDD) with selectable 2.5 V or 3.3 V I/O supply (VDDQ), and features interleaved/linear burst modes via MODE pin.

For engineers reviewing the CY7C1383KV33-133AXC datasheet, CY7C1383KV33-133AXC pinout, CY7C1383KV33-133AXC application, or CY7C1383KV33-133AXC equivalent, key selection criteria include burst address sequencing control (ADSP/ADSC/ADV), synchronous self-timed write timing, asynchronous OE and ZZ sleep enable, and JEDEC-compliant 100-pin TQFP packaging with JTAG boundary scan support.

Technical Context

This SRAM implements a synchronous, clock-driven architecture where all address, data, and control inputs (except OE and ZZ) are registered on the rising edge of CLK. A 2-bit internal burst counter captures A[1:0] at ADSP/ADSC assertion and auto-increments addresses during burst cycles controlled by ADV.

It supports dual-bus interface logic with three chip enables (CE1 active-low, CE2 active-high, CE3 active-low), four byte-write enables (BWA–BWD), global write (GW), and dedicated parity I/O lines (DQP A/B). ECC encoding/decoding is fully integrated to detect and correct single-bit errors in real time.

Key Specifications

Pinout & Package

Package: JEDEC-standard Pb-free 100-pin TQFP (14 × 20 × 1.4 mm), surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C31026B-133JCIN and IS61WV102418BLL-133TQLI, CY7C1383KV33-133AXC uniquely integrates ECC and dual-address-strobe burst control in a pin-compatible 100-pin TQFP, eliminating external error-handling logic and enabling direct interfacing with cache-coherent processors and network controllers.

Availability

CY7C1383KV33-133AXC is available at Aetrix Electronics and suitable for telecom line cards, network packet buffers, and industrial PLC memory modules requiring stable component supply, long-term lifecycle support, and guaranteed ECC-enabled SRAM performance.

Supply support for CY7C1383KV33-133AXC 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, microcontrollers, and connectivity solutions for industrial, automotive, and communications markets.

CY7C1383KV33 belongs to Cypress's high-speed synchronous SRAM product line, engineered specifically for cache and buffer applications demanding sub-10 ns access, burst-mode efficiency, and hardware-level data integrity in mission-critical infrastructure.

FAQ

What is the function of the MODE pin, and how must it be configured?

The MODE pin selects burst address order: HIGH (or floating, due to internal pull-up) enables interleaved burst; LOW (tied to GND) enables linear burst. It is a strap pin-configuration must be fixed before device initialization and cannot change dynamically during operation. Incorrect strapping causes invalid burst sequences and data misalignment.

Does CY7C1383KV33-133AXC support both 2.5 V and 3.3 V I/O simultaneously?

No. VDDQ is a single-supply pin accepting either 2.5 V or 3.3 V-not both. The selected VDDQ voltage determines I/O logic levels and must match the host controller's interface voltage. Mixing voltages risks latch-up or signal integrity failure. VDD remains fixed at 3.3 V regardless of VDDQ choice.

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

When ZZ is driven HIGH, the device enters a low-power sleep state with current draw reduced >90%, while all stored data is retained indefinitely without refresh. All outputs go high-Z, clocks are ignored, and internal logic halts-but memory cell state remains intact. Exiting sleep requires ZZ return to LOW followed by one valid CLK cycle before resuming operation.

Can ADSP and ADSC be used concurrently, and what happens if both are asserted?

No-ADSP and ADSC are mutually exclusive. When both are asserted LOW, the device recognizes only ADSP and ignores ADSC. This priority design ensures deterministic address capture in systems where processor and controller strobes may overlap. ADSC is intended for cache controller use only when ADSP is inactive.