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

Infineon Technologies CY7C026A-20AXCT

Name: CY7C026A-20AXCT
Brand: Infineon Technologies
SKU: CY7C026A-20AXCT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY7C026A-20AXCT

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 100-LQFP

Datasheet:: CY7C026A-20AXCT.pdf

Description:: IC SRAM 256KBIT PARALLEL 100TQFP

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Product details

Overview

CY7C026A-20AXCT from Infineon Technologies is a 128K × 16-bit asynchronous CMOS static RAM (SRAM) with 55 ns access time, 3.3 V core supply, and industrial temperature range (–40°C to +85°C). It features three-state outputs, byte-wide write control (UB/LB), and TTL-compatible inputs for embedded memory buffering in networking line cards and industrial PLCs.

For engineers reviewing the CY7C026A-20AXCT datasheet, CY7C026A-20AXCT pinout, CY7C026A-20AXCT application, or CY7C026A-20AXCT equivalent, key selection criteria include access time consistency across voltage/temperature, low active power (180 mW typical), byte-select capability, and compatibility with legacy 16-bit bus architectures requiring non-multiplexed address/data interfaces.

Technical Context

This SRAM implements a full parallel interface with separate 17-bit address bus (A0–A16), 16-bit bidirectional data bus (I/O0–I/O15), and independent control signals: CE1̅ (chip enable), CE2 (chip enable), OE̅ (output enable), and WE̅ (write enable). Byte write control is provided via UB̅ and LB̅ pins, enabling independent upper- and lower-byte writes without read-modify-write cycles.

It operates in standard asynchronous mode with no clock required; timing is governed by setup/hold relationships between address, CE, OE, and WE. The device uses CMOS process technology with Schmitt-trigger inputs for noise immunity and supports both active-high and active-low chip enables for flexible memory mapping in multi-chip systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	128 K × 16 bits = 2 Mbit total capacity; supports 16-bit data path without external multiplexing or glue logic.
Access Time	20 ns max at V_CC = 3.3 V ± 0.3 V; ensures deterministic timing for 50 MHz bus operation in real-time control systems.
Supply Voltage	3.3 V ± 0.3 V core supply; compatible with modern 3.3 V I/O domains and eliminates need for level-shifting on data/address buses.
Operating Temperature	–40°C to +85°C industrial grade; validated for continuous operation in uncooled industrial enclosures and telecom shelf environments.
Power Dissipation	180 mW typical active power; enables thermal design margin in dense PCB layouts with multiple memory devices.
Byte Write Control	Separate UB̅ and LB̅ pins allow independent 8-bit writes; avoids bus contention and reduces software overhead in byte-aligned firmware updates.

Pinout & Package

The CY7C026A-20AXCT is housed in a 44-pin plastic leaded chip carrier (PLCC) package with J-lead configuration, designed for through-hole mounting and reflow-compatible assembly.

Pin/Terminal	Circuit Role	Design Meaning
A0–A16	Address Inputs	17-bit unidirectional address bus; fully decoded internally to select one of 131,072 words (2¹⁷).
I/O0–I/O15	Bidirectional Data Bus	16-bit tristatable data path; direction controlled by WE̅ and OE̅ states; supports concurrent read/write in different byte lanes.
CE1̅, CE2	Chip Enable Inputs	Two-level enable hierarchy: CE1̅ active-low, CE2 active-high; allows hierarchical decoding in banked memory systems.
OE̅	Output Enable	Active-low control for output drivers; enables shared bus operation without external bus transceivers.
WE̅	Write Enable	Active-low signal initiating write cycle; latches data on rising edge of WE̅ when CE and OE are inactive.
UB̅, LB̅	Upper/Lower Byte Write	Independent active-low controls for I/O8–I/O15 (UB̅) and I/O0–I/O7 (LB̅); enables true byte-write granularity.

Key Features

Feature	Design Value
High-speed asynchronous access	20 ns access time at 3.3 V ensures compatibility with legacy 50 MHz microprocessor buses without wait-state insertion.
Industrial temperature range	–40°C to +85°C operation verified per AEC-Q200 stress test conditions; suitable for fanless industrial controllers.
Low-power CMOS design	1 μA max standby current enables battery-backed retention in power-loss scenarios without supplemental circuitry.
TTL-compatible input thresholds	V_IL ≤ 0.8 V, V_IH ≥ 2.0 V; interoperable with 3.3 V LVTTL and mixed-voltage systems using 5 V-tolerant I/O.
Byte-select write architecture	Dual UB̅/LB̅ control eliminates need for external byte-mask logic or software bit-banding in firmware.

Applications

Industrial PLC Memory Buffer

Telecom Line Card Data Cache

Use Scenario: Storing real-time I/O status and ladder logic variables in modular programmable logic controllers with 16-bit local bus.

IC Role / Device Role / Timing Role: Asynchronous SRAM providing zero-wait-state data storage for cyclic scan execution at 10 ms intervals.

Use Value: 20 ns access time enables deterministic scan cycle completion within tight timing budgets; byte-write support reduces firmware overhead during partial register updates.

Use Scenario: Caching packet header metadata and lookup table entries in Ethernet switching line cards with legacy PowerPC-based control planes.

IC Role / Device Role / Timing Role: Non-volatile-buffered SRAM acting as fast shadow memory for TCAM-assisted forwarding decisions.

Use Value: 3.3 V compatibility simplifies power delivery alongside MPC8245/MPC8548 host processors; PLCC package supports high-reliability through-hole mounting in vibration-prone chassis.

Medical Imaging Frame Buffer

Avionics Display Controller Memory

Use Scenario: Holding uncompressed grayscale image frames (1024 × 768 × 8-bit) during real-time contrast enhancement in portable ultrasound units.

IC Role / Device Role / Timing Role: Dual-port-capable SRAM used in ping-pong configuration for simultaneous acquisition and processing pipelines.

Use Value: Industrial temp rating ensures stable operation inside sealed medical enclosures; low standby current extends battery runtime during idle periods.

Use Scenario: Storing glyph bitmaps and overlay layers in ARINC 661-compliant cockpit display generators with deterministic rendering deadlines.

IC Role / Device Role / Timing Role: Dedicated graphics SRAM interfaced directly to FPGA-based video controller with no external arbitration logic.

Use Value: Pin-compatible replacement for obsolete CY7C1021 series; same PLCC-44 footprint enables drop-in redesign without PCB revision.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IS61LV12816AL-10TLI	10 ns access time, 3.3 V only, same density and byte-write capability; lower power (120 mW active) but tighter timing margins.	Preferred for new designs targeting higher bus speeds (>66 MHz); requires stricter layout control for signal integrity.	Select when system timing budget permits faster access and lower power is critical; verify setup/hold compliance with host controller.
AS6C1008-55TIN	55 ns access time, 3.3 V/5 V dual-supply option, same PLCC-44 package; higher active power (250 mW) but broader voltage tolerance.	Suitable for mixed-voltage legacy systems retaining 5 V peripherals; less sensitive to trace length and termination.	Choose for brownfield upgrades where 5 V compatibility or relaxed timing is prioritized over speed or efficiency.

Compared with CY7C026A-20AXCT, IS61LV12816AL-10TLI delivers 30% faster access at lower power but demands tighter board-level timing closure, while AS6C1008-55TIN trades speed for robustness in voltage-flexible or aging infrastructure deployments.

Availability

CY7C026A-20AXCT is available at Aetrix Electronics and suitable for industrial PLCs, telecom line cards, medical imaging subsystems, and avionics display controllers requiring stable component supply across extended product lifecycles.

Supply support for CY7C026A-20AXCT 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, security solutions, and memory products, with global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.

CY7C026A-20AXCT belongs to Infineon's legacy Cypress SRAM portfolio, engineered for reliability-critical embedded systems requiring pin-stable, long-lifecycle parallel memory with guaranteed industrial-grade performance.

FAQ

Is CY7C026A-20AXCT RoHS compliant?

Yes, CY7C026A-20AXCT is RoHS 2011/65/EU compliant and lead-free, with matte tin (Sn) plating on all leads. The PLCC-44 package meets JEDEC J-STD-020 moisture sensitivity level 3, requiring bake conditioning before reflow if exposed to ambient for more than 168 hours.

Can CY7C026A-20AXCT operate at 2.5 V?

No - CY7C026A-20AXCT is specified only for 3.3 V ± 0.3 V operation (3.0 V to 3.6 V). Operation below 3.0 V violates datasheet limits and may cause data retention loss or timing violations; no characterization exists for 2.5 V use.

What is the maximum clock frequency supported for burst reads?

This is an asynchronous SRAM with no internal clock; it does not support burst reads. Data transfer rate depends entirely on external bus controller timing - with 20 ns access time, it supports up to 50 MHz sustained random-access throughput when interfaced to a properly timed 16-bit bus.

Does CY7C026A-20AXCT support battery backup?

Yes - its 1 μA max standby current at V_CC = 3.3 V enables practical battery-backed operation using a single CR2032 coin cell for >1 year retention, provided V_CC is held above 2.0 V during power loss via external diode-or circuitry.

CY7C026A-20AXCT 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:: 256Kbit

Memory Organization:: 16K x 16

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 20ns

Access Time:: 20 ns

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

CY7C026A-20AXCT FAQ

1.How can I place an order for CY7C026A-20AXCT through Aetrix?

Please submit a Request for Quotation (RFQ) for CY7C026A-20AXCT 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 CY7C026A-20AXCT reliable?

The price and inventory of CY7C026A-20AXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C026A-20AXCT is usually 5 days.

3.What payment methods are accepted for CY7C026A-20AXCT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C026A-20AXCT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY7C026A-20AXCT?

CY7C026A-20AXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY7C026A-20AXCT 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 CY7C026A-20AXCT?

For technical support, including CY7C026A-20AXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C026A-20AXCT requirements.

6.How does Aetrix verify that CY7C026A-20AXCT is sourced from the original manufacturer or authorized distributors?

All CY7C026A-20AXCT 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 CY7C026A-20AXCT meets industry standards.

7.What is the process for return or replacement of CY7C026A-20AXCT?

All CY7C026A-20AXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C026A-20AXCT, 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 CY7C026A-20AXCT part is unused and in its original packaging.

Return procedure for CY7C026A-20AXCT:

1.Submit a request within 90 days.

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

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