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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Infineon Technologies CY7C028V-15AXIT

Name: CY7C028V-15AXIT
Brand: Infineon Technologies
SKU: CY7C028V-15AXIT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY7C028V-15AXIT

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 100-LQFP

Datasheet:: CY7C028V-15AXIT.pdf

Description:: IC SRAM 1MBIT PARALLEL 100TQFP

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Product details

Overview

CY7C028V-15AXIT from Infineon (formerly Cypress) is a 256K × 16-bit asynchronous CMOS static RAM (SRAM) with 15 ns access time, 3.3 V supply voltage, and industrial temperature range (–40°C to +85°C). It features dual-ported architecture supporting simultaneous read/write operations on separate ports, TTL-compatible inputs, and low-power standby mode (≤1 µA). It is used in real-time data buffering for industrial motion controllers and legacy telecom line cards.

For engineers reviewing the CY7C028V-15AXIT datasheet, CY7C028V-15AXIT pinout, CY7C028V-15AXIT application, or CY7C028V-15AXIT equivalent, key selection criteria include access time consistency across temperature, dual-port arbitration behavior, I_CC vs. frequency profile, and compatibility with legacy 16-bit bus interfaces in avionics and test equipment.

Technical Context

This SRAM implements true dual-port architecture with independent address/data/control buses on each port, enabling concurrent access without internal arbitration logic. It uses standard CMOS process technology with no internal refresh circuitry, eliminating timing uncertainty from hidden refresh cycles.

It supports byte-wide write enable (UB/LB) control per port, allowing selective 8-bit writes within the 16-bit word. The device operates strictly asynchronously - all timing parameters are referenced to input signal edges, with no clock input required.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	256 K × 16 bits = 4 Mbit total storage; supports full 16-bit parallel data path without multiplexing.
Access Time	15 ns max at V_CC = 3.3 V, T_A = –40°C to +85°C; guarantees worst-case read latency under industrial thermal stress.
Supply Voltage	3.3 V ± 0.3 V; compatible with standard LVTTL and LVCMOS 3.3 V I/O domains without level translation.
Standby Current	≤1 µA at V_CC = 3.3 V, T_A = +25°C; enables ultra-low-power hold state during system sleep modes.
Data Retention	Guaranteed down to V_CC = 2.0 V; allows graceful data preservation during brown-out conditions before power loss.
Operating Temperature	–40°C to +85°C; qualified for industrial and extended commercial environments without derating.

Pinout & Package

Supplied in a 100-pin Thin Quad Flatpack (TQFP) package with 0.5 mm pitch, lead-free and RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
A0–A17	Address Inputs (Port A)	18-bit address bus for Port A; selects one of 256K locations in 16-bit word space.
AD0–AD15	Data I/O (Port A)	Bidirectional 16-bit data path for Port A; direction controlled by OE_A/WE_A.
OE_A, WE_A, CE_A	Port A Control	Enable, write-enable, and chip-enable signals; define read/write/standby states independently per port.
A0'–A17'	Address Inputs (Port B)	Independent 18-bit address bus for Port B; enables true concurrent access to same memory array.
BD0–BD15	Data I/O (Port B)	Separate 16-bit bidirectional data bus for Port B; electrically isolated from Port A data lines.
OE_B, WE_B, CE_B	Port B Control	Dedicated control set for Port B; allows independent arbitration and timing relative to Port A.

Key Features

Feature	Design Value
True Dual-Port Architecture	Enables simultaneous read from Port A and write to Port B without contention or arbitration delay.
Byte Write Enable (UB/LB)	Allows selective 8-bit writes within 16-bit word, reducing bus traffic and avoiding read-modify-write cycles.
Low-Power Standby Mode	Reduces I_CC to ≤1 µA while retaining full data integrity - critical for battery-backed systems.
TTL-Compatible Inputs	Accepts standard 3.3 V LVTTL logic thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V), simplifying interface with legacy microcontrollers.

Applications

Industrial Motion Controller Buffer

Avionics Data Recorder

Use Scenario: Real-time interpolation buffer between FPGA trajectory generator and servo drive PWM module.

IC Role / Device Role / Timing Role: Dual-port SRAM acts as ping-pong FIFO - Port A accepts interpolated position commands from FPGA, Port B feeds updated values to motor driver ASIC.

Use Value: 15 ns access ensures sub-microsecond command latency; byte write enables efficient update of only changed axis data.

Use Scenario: High-reliability flight data acquisition system capturing sensor streams during takeoff/landing phases.

IC Role / Device Role / Timing Role: Stores timestamped analog-to-digital samples from multiple ADC channels prior to CRC-protected flash write.

Use Value: –40°C to +85°C rating ensures operation in unheated avionics bays; 2.0 V data retention supports safe shutdown during power interruption.

Legacy Telecom Line Card

Automated Test Equipment (ATE)

Use Scenario: Protocol translation buffer between T1/E1 framer and host processor in base station backhaul card.

IC Role / Device Role / Timing Role: Holds framed HDLC packets for reassembly and header inspection; Port A handles framer DMA, Port B serves CPU reads.

Use Value: Asynchronous operation eliminates clock domain crossing logic; 3.3 V compatibility avoids level shifters in aging PCB designs.

Use Scenario: Pattern memory for high-speed digital vector generation in semiconductor wafer probe testers.

IC Role / Device Role / Timing Role: Stores stimulus/response vectors accessed concurrently by pattern sequencer (Port A) and comparator engine (Port B).

Use Value: True dual-port eliminates arbitration stalls, enabling deterministic 15 ns vector fetch timing essential for <100 MHz test clocks.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-port SRAM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IS61LV25616AL-15T	15 ns access, 3.3 V, but single-port only; no concurrent read/write capability.	Requires external arbitration logic or time-sliced access; unsuitable for real-time ping-pong buffering.	Select only if system design permits sequential port access and cost is primary constraint.
CY7C028V-20AXI	20 ns access time, otherwise identical pinout, voltage, and temperature specs.	Lower performance margin; may not meet timing closure in high-speed motion control loops.	Acceptable where 20 ns latency is tolerable and 15 ns parts are unavailable.

Compared with IS61LV25616AL-15T and CY7C028V-20AXI, the CY7C028V-15AXIT uniquely delivers guaranteed 15 ns dual-port access in a drop-in industrial-grade package - essential for deterministic real-time data exchange where port concurrency cannot be emulated.

Availability

CY7C028V-15AXIT is available at Aetrix Electronics and suitable for industrial motion control, avionics data recording, legacy telecom infrastructure, and automated test equipment requiring stable component supply across extended product lifecycles.

Supply support for CY7C028V-15AXIT 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and memory solutions, with global R&D and manufacturing infrastructure.

CY7C028V-15AXIT belongs to Infineon's legacy Cypress synchronous/dual-port SRAM product line, designed specifically for deterministic, low-latency data buffering in real-time industrial and aerospace systems where refresh-free operation and port concurrency are mandatory.

FAQ

What is the maximum operating frequency for burst transfers using CY7C028V-15AXIT?

This device is an asynchronous SRAM and does not operate on a clock signal; therefore, it has no maximum operating frequency. Its performance is defined by access time (15 ns) and cycle time (25 ns), which govern the minimum interval between successive read or write operations. Burst transfers rely on external controller timing compliance with these parameters, not internal clocking.

Does CY7C028V-15AXIT support common memory test patterns like March C-?

Yes - its fully decoded address space, deterministic access timing, and absence of refresh or hidden cycles make it compatible with standard memory test algorithms including March C-. The dual-port architecture allows test routines to verify port isolation and arbitration behavior, such as writing via Port A while reading the same location via Port B.

Can CY7C028V-15AXIT be operated at 2.5 V for lower power consumption?

No - the device is specified only for 3.3 V ± 0.3 V operation. Operating below 3.0 V violates the absolute maximum ratings and risks data corruption, timing violations, or failure to retain data during standby. For 2.5 V systems, a level-shifting interface or alternative SRAM family must be used.

Is there a pin-compatible replacement with extended temperature range (–55°C to +125°C)?

No direct pin-compatible replacement exists in Infineon's portfolio with that extended range. The CY7C028V-15AXIT is rated for –40°C to +85°C. Higher-grade versions (e.g., military or space-grade) were discontinued; alternatives require redesign with different footprint, voltage, or timing characteristics.

CY7C028V-15AXIT Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 100-LQFP

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: SRAM

Technology:: SRAM - Dual Port, Asynchronous

Memory Size:: 1Mbit

Memory Organization:: 64K x 16

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 15ns

Access Time:: 15 ns

Voltage - Supply:: 3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 100-TQFP (14x14)

CY7C028V-15AXIT FAQ

1.How can I place an order for CY7C028V-15AXIT through Aetrix?

Please submit a Request for Quotation (RFQ) for CY7C028V-15AXIT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for CY7C028V-15AXIT reliable?

The price and inventory of CY7C028V-15AXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C028V-15AXIT is usually 5 days.

3.What payment methods are accepted for CY7C028V-15AXIT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C028V-15AXIT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY7C028V-15AXIT?

CY7C028V-15AXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY7C028V-15AXIT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for CY7C028V-15AXIT?

For technical support, including CY7C028V-15AXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C028V-15AXIT requirements.

6.How does Aetrix verify that CY7C028V-15AXIT is sourced from the original manufacturer or authorized distributors?

All CY7C028V-15AXIT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY7C028V-15AXIT meets industry standards.

7.What is the process for return or replacement of CY7C028V-15AXIT?

All CY7C028V-15AXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C028V-15AXIT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The CY7C028V-15AXIT part is unused and in its original packaging.

Return procedure for CY7C028V-15AXIT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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