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

Infineon Technologies CY7C028V-15AXCT

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

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Part No.:: CY7C028V-15AXCT

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 100-LQFP

Datasheet:: CY7C028V-15AXCT.pdf

Description:: IC SRAM 1MBIT PARALLEL 100TQFP

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Inventory:1,732

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Product details

Overview

CY7C028V-15AXCT from Infineon Technologies is a 256K × 16-bit asynchronous dual-port static RAM (SRAM) with 15 ns access time, CMOS process technology, and 3.3 V core supply. It supports independent concurrent read/write operations on both ports, features automatic power-down mode, and is used in high-speed networking packet buffers and industrial motion control memory arbitration.

For engineers reviewing the CY7C028V-15AXCT datasheet, CY7C028V-15AXCT pinout, CY7C028V-15AXCT application, or CY7C028V-15AXCT equivalent, key selection criteria include dual-port concurrency timing, bus contention resolution logic, low-power standby current, and TQFP-100 package compatibility with legacy Cypress-compatible PCB footprints.

Technical Context

This device implements true dual-port architecture with separate address, data, and control buses for Port A and Port B - enabling simultaneous access without internal arbitration logic. Each port has independent chip select (CE), output enable (OE), and write enable (WE) signals, supporting full asynchronous operation.

It integrates BUSY arbitration logic to resolve contention when both ports attempt write access to the same memory location, asserting BUSY on the later-arriving port. The device operates over industrial temperature range (–40°C to +85°C) and meets JEDEC JESD8-15A I/O voltage specifications for 3.3 V systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	256K × 16-bit (4 Mbit total); provides sufficient buffer space for multi-channel real-time data streams in telecom line cards.
Access Time	15 ns max at V_CC = 3.3 V ± 0.3 V; enables direct interfacing with 66 MHz PCI bus or FPGA fabric without wait states.
Supply Voltage	Core: 3.3 V ± 0.3 V; I/O: 3.3 V or 5 V tolerant (with external V_DDQ control); simplifies mixed-voltage system integration.
Standby Current	≤ 50 µA at T_A = 25°C; supports low-power modes in always-on industrial controllers without battery drain.
Operating Temperature	–40°C to +85°C; qualified for deployment in uncontrolled industrial enclosures and transportation infrastructure equipment.
Package	100-pin TQFP (14 mm × 20 mm, 0.5 mm pitch); compatible with standard SMT reflow profiles and legacy Cypress footprint layouts.

Pinout & Package

Package: 100-pin Thin Quad Flat Package (TQFP), thermally enhanced, RoHS-compliant, moisture sensitivity level 3.

Pin/Terminal	Circuit Role	Design Meaning
A0–A17	Port A address inputs	18-bit address bus for Port A; selects one of 256K locations independently of Port B addressing.
AD0–AD15	Port A bidirectional data bus	16-bit parallel data path for reads/writes on Port A; high-impedance when OE_A inactive or CE_A high.
B0–B17	Port B address inputs	18-bit address bus for Port B; fully independent - allows simultaneous access to different addresses than Port A.
BD0–BD15	Port B bidirectional data bus	16-bit parallel data path for Port B; electrically isolated from ADx pins to prevent bus contention.
CE_A, CE_B	Chip enable (active low)	Independent enable per port; disables all internal functions (including power-down) when deasserted.
OE_A, OE_B	Output enable (active low)	Controls data bus drivers only; allows read operation while write circuitry remains inactive.
WE_A, WE_B	Write enable (active low)	Enables write cycle on respective port; must be asserted with valid address and data setup/hold timing.
BUSY	Arbitration status output	Active-high open-drain signal indicating write contention; used to stall one port's controller during conflict resolution.

Key Features

Feature	Design Value
True dual-port architecture	Full independence between Port A and Port B - no shared control logic or clock dependency required.
Hardware BUSY arbitration	Dedicated open-drain BUSY output resolves write collisions automatically without software intervention or external logic.
Low-power standby mode	50 µA typical ICC_SB; achieved by gating internal clocks and disabling sense amplifiers while retaining memory state.
3.3 V core + 5 V-tolerant I/O	V_DDQ-controlled I/O buffers accept 3.3 V or 5 V logic levels - eliminates level shifters in mixed-voltage designs.
Industrial temperature grade	Qualified per AEC-Q100 stress test conditions for extended reliability in harsh environments.

Applications

Network Packet Buffering

Industrial Motion Controller

Use Scenario: Storing incoming/outgoing Ethernet frames in a Layer 2 switch ASIC interface.

IC Role / Device Role / Timing Role: Dual-port SRAM acts as non-blocking frame buffer - Port A accepts ingress packets from MAC, Port B feeds egress scheduler.

Use Value: 15 ns access ensures zero-cycle latency handoff between traffic paths, sustaining full wire-rate 1 Gbps throughput.

Use Scenario: Coordinating position setpoints and encoder feedback in multi-axis CNC drive systems.

IC Role / Device Role / Timing Role: Shared memory resource between FPGA motion planner (Port A) and DSP servo loop processor (Port B).

Use Value: Concurrent read/write eliminates polling delays and guarantees deterministic 10 µs update intervals for closed-loop control.

Automotive ADAS Video Preprocessing

Medical Imaging Data Pipeline

Use Scenario: Temporarily storing raw camera sensor frames before H.264 compression in surround-view ECUs.

IC Role / Device Role / Timing Role: Frame buffer between MIPI CSI-2 receiver (Port A) and video codec engine (Port B).

Use Value: BUSY arbitration prevents pixel corruption during simultaneous capture and encode bursts, ensuring frame integrity.

Use Scenario: Holding DICOM image tiles during real-time reconstruction in portable ultrasound units.

IC Role / Device Role / Timing Role: High-bandwidth scratchpad memory between ADC front-end (Port A) and FPGA beamformer (Port B).

Use Value: 16-bit bus width matches ADC output format, eliminating packing/unpacking overhead and reducing processing latency by 12%.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IS61WV25616EDBLL-15BLI	15 ns access, 256K × 16-bit, but uses 3.3 V only (no 5 V I/O tolerance); lower standby current (25 µA).	Requires level-shifting in 5 V legacy systems; better suited for new 3.3 V-only designs prioritizing ultra-low power.	Select when board redesign allows full 3.3 V I/O and sub-30 µA standby is critical.
AS7C3256A-15JCIN	15 ns access, same density, but TQFP-100 package with different pinout (no BUSY signal); higher ICC_SB (100 µA).	Lacks hardware arbitration - requires external logic or firmware coordination for contention management.	Choose only if existing PCB layout accommodates pinout change and software can handle arbitration.

Compared with IS61WV25616EDBLL-15BLI and AS7C3256A-15JCIN, CY7C028V-15AXCT uniquely delivers 5 V-tolerant I/O and integrated BUSY arbitration in a drop-in-compatible footprint - critical for maintaining legacy system compatibility while avoiding firmware complexity.

Availability

CY7C028V-15AXCT is available at Aetrix Electronics and suitable for industrial motion control, automotive ADAS preprocessing, and medical imaging data pipeline applications requiring stable component supply across long production lifecycles.

Supply support for CY7C028V-15AXCT 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 German semiconductor manufacturer specializing in power management, automotive ICs, and memory solutions, with global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.

CY7C028V-15AXCT belongs to Infineon's legacy Cypress-branded dual-port SRAM product line, designed specifically for deterministic, contention-free memory sharing between heterogeneous processors and ASICs in real-time embedded systems.

FAQ

What is the maximum clock frequency supported for synchronous interface use?

CY7C028V-15AXCT is an asynchronous SRAM and does not require or support a clock input. Its 15 ns access time corresponds to a maximum effective data rate of ~66.7 MHz when interfaced with a synchronous controller using appropriate setup/hold timing - no PLL or clock domain crossing logic is needed.

Does this part support byte-level write masking?

No. CY7C028V-15AXCT performs full 16-bit writes per access; it lacks individual byte write enable (UB/LB) controls. Write operations always affect all 16 data bits simultaneously - external logic or firmware must manage partial-word updates.

Can Port A and Port B operate at different voltage levels?

No. While I/O pins are 5 V tolerant, both ports share the same V_DDQ supply pin and therefore must operate at identical I/O voltage levels (either 3.3 V or 5 V). Independent voltage domains per port are not supported.

Is there a lead-free and RoHS-compliant version available?

Yes. CY7C028V-15AXCT is manufactured in a lead-free, RoHS-compliant TQFP-100 package (suffix "XCT" denotes lead-free, halogen-free, and JEDEC-standard moisture sensitivity level 3 packaging).

CY7C028V-15AXCT 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:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

CY7C028V-15AXCT FAQ

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

Please submit a Request for Quotation (RFQ) for CY7C028V-15AXCT 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-15AXCT reliable?

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

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your CY7C028V-15AXCT 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-15AXCT?

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

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

All CY7C028V-15AXCT 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-15AXCT meets industry standards.

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

All CY7C028V-15AXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C028V-15AXCT, 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-15AXCT part is unused and in its original packaging.

Return procedure for CY7C028V-15AXCT:

1.Submit a request within 90 days.

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

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