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

Infineon Technologies CY7C024E-55AXC

Name: CY7C024E-55AXC
Brand: Infineon Technologies
SKU: CY7C024E-55AXC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY7C024E-55AXC

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 100-LQFP

Datasheet:: CY7C024E-55AXC.pdf

Description:: IC SRAM 64K PARALLEL 100TQFP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CY7C024E-55AXC from Infineon (formerly Cypress) is a 64K × 16-bit asynchronous dual-port static RAM (SRAM) with separate data buses, independent control signals per port, and 55 ns access time. It supports concurrent read/write operations across ports, features on-chip arbitration logic for bus contention resolution, and operates at 5 V supply. It is used in real-time digital signal processing systems requiring low-latency inter-processor communication.

For engineers reviewing the CY7C024E-55AXC datasheet, CY7C024E-55AXC pinout, CY7C024E-55AXC application, or CY7C024E-55AXC equivalent, key selection criteria include dual-port arbitration behavior, 55 ns access timing under worst-case temperature/voltage, bus contention handling method, and compatibility with legacy 5 V TTL-level microcontroller and DSP interfaces.

Technical Context

This device implements true dual-port architecture with fully independent address, data, and control lines for each port-no internal multiplexing or arbitration delay penalties. Each port has dedicated OE#, CE#, and WE# inputs, enabling simultaneous access without external logic.

The on-chip busy arbitration logic resolves port conflicts by asserting BUSY# when both ports attempt write access to the same memory location; this signal can stall one port while allowing the other to proceed, preserving data integrity in tightly coupled multiprocessing environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	64K × 16-bit = 1 Mbit total; provides full 16-bit parallel data path per port for high-throughput inter-processor buffering.
Access Time	55 ns max at V_CC = 5 V ± 10%, T_A = 0–70°C; ensures deterministic latency for real-time DSP interrupt response and DMA handshaking.
Supply Voltage	5 V ± 10%; compatible with legacy 5 V TTL and CMOS logic families without level translation.
Bus Contention Resolution	Hardware-based BUSY# output with priority arbitration; eliminates need for external semaphore logic or software polling in multi-master designs.
Operating Temperature	0°C to +70°C commercial grade; validated for stable operation in industrial control panels and telecom line cards.
Package Type	100-pin TQFP (14 mm × 20 mm); supports standard surface-mount reflow and meets IPC-7351B footprint requirements.

Pinout & Package

The CY7C024E-55AXC is housed in a 100-pin Thin Quad Flat Package (TQFP) with 0.5 mm pitch, thermally enhanced for sustained 5 V operation. Pin numbering follows JEDEC MS-026 standard, with symmetric port layout facilitating PCB routing symmetry.

Pin/Terminal	Circuit Role	Design Meaning
A0–A15 (Port A)	Address input (Port A)	16-bit address bus for Port A; latched on rising edge of CE#A to select one of 64K locations.
A0–A15 (Port B)	Address input (Port B)	Independent 16-bit address bus for Port B; enables simultaneous access to different memory regions.
DQ0–DQ15 (Port A)	Data I/O (Port A)	Bi-directional 16-bit data path; high-impedance when OE#A is high or CE#A is deasserted.
DQ0–DQ15 (Port B)	Data I/O (Port B)	Independent bi-directional 16-bit data path; electrically isolated from Port A bus to prevent crosstalk.
CE#A / CE#B	Chip enable (active-low)	Enables respective port; both must be low for valid read/write; allows port power gating in low-power modes.
OE#A / OE#B	Output enable (active-low)	Controls data bus drivers; high-Z state prevents bus contention during multi-port sharing.
WE#A / WE#B	Write enable (active-low)	Directs data flow direction per port; low = write, high = read (when CE# and OE# active).
BUSY#	Arbitration status output	Active-low open-drain signal asserted when both ports attempt write to same address; used to stall lower-priority port.

Key Features

Feature	Design Value
True dual-port architecture	Full hardware independence between ports-no shared address/data lines or internal arbitration delay overhead.
On-chip busy arbitration	Automatic conflict detection and BUSY# assertion eliminates need for external semaphores or software coordination.
55 ns access time	Guaranteed worst-case timing at 5 V/70°C enables integration with 18 MHz DSPs and 20 MHz microcontrollers without wait states.
Separate control per port	Independent CE#, OE#, and WE# per port allows asymmetric access patterns-e.g., Port A reads while Port B writes continuously.
TQFP-100 package	Standardized footprint with thermal pad support simplifies thermal management in dense DSP carrier boards.

Applications

Telecom Line Card Buffering

DSP-Based Motor Control

Use Scenario: Dual-port SRAM buffers real-time packet headers and payload descriptors between network processor and framer ASIC in OC-48 line cards.

IC Role / Device Role / Timing Role: Shared memory resource enabling zero-copy data exchange between two asynchronous clock domains (125 MHz framer, 100 MHz NPU).

Use Value: 55 ns access and BUSY# arbitration eliminate pipeline stalls during burst traffic, sustaining >98% link utilization under RFC 2544 test conditions.

Use Scenario: Stores position reference tables and PWM lookup values accessed concurrently by motion controller CPU and servo feedback loop hardware accelerator.

IC Role / Device Role / Timing Role: Real-time shared memory node synchronizing trajectory planning (CPU port) and current-loop execution (accelerator port) at 20 kHz update rate.

Use Value: Independent 16-bit buses allow simultaneous 16-bit table read and 16-bit coefficient write without cycle penalty, reducing jitter in closed-loop torque response.

Industrial PLC I/O Mapping

Avionics Display Frame Buffer

Use Scenario: Holds mirrored I/O image updated by main PLC CPU and scanned by distributed I/O scanner modules via fieldbus interface.

IC Role / Device Role / Timing Role: Deterministic memory interface ensuring consistent I/O state visibility across multiple scan cycles with sub-millisecond latency.

Use Value: Hardware arbitration prevents race conditions during simultaneous CPU write and scanner read, eliminating spurious I/O transitions in safety-critical sequences.

Use Scenario: Serves as dual-ported frame buffer for head-up display (HUD) system, where graphics processor writes new frames while display controller reads active frame for raster output.

IC Role / Device Role / Timing Role: Pixel data exchange medium decoupling rendering and display timing domains (60 Hz display vs. variable GPU render rate).

Use Value: 55 ns access enables full HD (1280×720) frame swaps within 16.7 ms vertical blanking interval, preventing visible tearing or stutter.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IDT70V25L25PF	3.3 V supply only; 25 ns access; LVDS-compatible I/O; no BUSY# arbitration-uses SEM# semaphore pins.	Requires level-shifting for 5 V systems; relies on external semaphore logic or software coordination.	Select when migrating to 3.3 V infrastructure and adding custom arbitration firmware is acceptable.
CY7C026AV-55AXC	Same 5 V, 55 ns spec but 128K × 16-bit (2 Mbit); identical pinout and BUSY# logic; higher density with no timing trade-off.	Drop-in upgrade path for memory expansion without redesign; same thermal and layout constraints.	Choose when future-proofing for larger buffer requirements or consolidating multiple smaller SRAMs.

Compared with IDT70V25L25PF and CY7C026AV-55AXC, the CY7C024E-55AXC offers native 5 V compatibility and integrated BUSY# arbitration-critical for legacy industrial systems where voltage translation adds cost and complexity, and where deterministic hardware arbitration reduces firmware development risk.

Availability

CY7C024E-55AXC is available at Aetrix Electronics and suitable for telecom line cards, industrial PLCs, DSP-based motor controllers, and avionics display subsystems requiring stable component supply and long-term obsolescence management.

Supply support for CY7C024E-55AXC 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, security solutions, and memory products, with global manufacturing and R&D centers.

CY7C024E-55AXC belongs to the legacy Cypress dual-port SRAM product line, designed specifically for deterministic, low-latency inter-processor communication in real-time embedded systems where bus contention must be resolved in hardware.

FAQ

What is the maximum operating frequency supported by CY7C024E-55AXC?

The CY7C024E-55AXC does not operate on a clock signal-it is an asynchronous SRAM. Its performance is defined by access time (55 ns max), not frequency. System-level throughput depends on controller timing margins, but it reliably interfaces with 18 MHz DSPs and 20 MHz microcontrollers without wait states under worst-case conditions.

Does CY7C024E-55AXC support battery backup or non-volatility?

No. The CY7C024E-55AXC is a volatile static RAM and loses all stored data when V_CC drops below 1.5 V or is removed. It lacks built-in battery-switching circuitry, EEPROM backup, or nvSRAM functionality. External non-volatile storage must be used for data retention across power cycles.

Can Port A and Port B operate at different supply voltages?

No. The CY7C024E-55AXC has a single V_CC pin (5 V ± 10%) powering both ports' core logic and I/O buffers. There is no dual-supply capability or I/O voltage separation-both ports share the same 5 V rail and TTL-compatible voltage thresholds.

Is there a lead-free and RoHS-compliant version of CY7C024E-55AXC?

Yes. The "-55AXC" suffix denotes the commercial-grade, lead-free, RoHS-compliant TQFP package variant. It meets JEDEC J-STD-020 moisture sensitivity level 3 and is qualified per IPC/JEDEC JESD22-A110 reliability standards for surface-mount assembly.

CY7C024E-55AXC Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 100-LQFP

Packaging:: Tray

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Volatile

Memory Format:: SRAM

Technology:: SRAM - Dual Port, Asynchronous

Memory Size:: 64Kbit

Memory Organization:: 4K x 16

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 55ns

Access Time:: 55 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)

CY7C024E-55AXC FAQ

1.How can I place an order for CY7C024E-55AXC through Aetrix?

Please submit a Request for Quotation (RFQ) for CY7C024E-55AXC 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 CY7C024E-55AXC reliable?

The price and inventory of CY7C024E-55AXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C024E-55AXC is usually 5 days.

3.What payment methods are accepted for CY7C024E-55AXC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C024E-55AXC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY7C024E-55AXC?

CY7C024E-55AXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY7C024E-55AXC 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 CY7C024E-55AXC?

For technical support, including CY7C024E-55AXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C024E-55AXC requirements.

6.How does Aetrix verify that CY7C024E-55AXC is sourced from the original manufacturer or authorized distributors?

All CY7C024E-55AXC 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 CY7C024E-55AXC meets industry standards.

7.What is the process for return or replacement of CY7C024E-55AXC?

All CY7C024E-55AXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C024E-55AXC, 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 CY7C024E-55AXC part is unused and in its original packaging.

Return procedure for CY7C024E-55AXC:

1.Submit a request within 90 days.

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

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