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Infineon Technologies CY7C1041D-2XWI
- Part No.:
- CY7C1041D-2XWI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- -
- Datasheet:
-
CY7C1041D-2XWI.pdf
- Description:
- IC SRAM 4MBIT PARALLEL
- Quantity:
- Payment:
- Shipping:
Inventory:1,508
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Product details
Overview
CY7C1041D-2XWI from Infineon (acquired Cypress) is a 4-Mbit (256K × 16) asynchronous CMOS static RAM with 55 ns access time, 4.5–5.5 V operation, and industrial temperature range (–40°C to +85°C), used in embedded controllers, industrial PLCs, and legacy communication interface buffers.
For engineers reviewing the CY7C1041D-2XWI datasheet, CY7C1041D-2XWI pinout, CY7C1041D-2XWI application, or CY7C1041D-2XWI equivalent, key selection criteria include access speed, voltage tolerance, industrial temp rating, and parallel SRAM interface compatibility with microcontroller address/data buses.
Technical Context
This SRAM implements full asynchronous read/write timing with separate chip enable (CE), output enable (OE), and write enable (WE) controls. It supports byte-wide or word-wide data access via UB/LB control pins and maintains data integrity without refresh cycles.
The device uses standard TTL-compatible input thresholds and CMOS-level outputs, operates at zero standby current when deselected, and features automatic power-down during CE high to reduce system power consumption in idle states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 4096 Kb (256K × 16 bits) - provides sufficient buffer space for real-time data logging or protocol stack handling in resource-constrained systems |
| Access Time | 55 ns - enables direct interfacing with 16-bit microcontrollers running at ≤18 MHz without wait states |
| Supply Voltage | 4.5 V to 5.5 V - compatible with legacy 5 V logic families and tolerant of rail droop in industrial power supplies |
| Operating Temp | –40°C to +85°C - qualified for use in uncontrolled industrial enclosures and outdoor equipment housings |
| Package | 44-pin TSOP II (Type II) - surface-mount footprint supporting automated assembly and thermal performance up to 1.2 W dissipation |
| Moisture Sensitivity | MSL 5 - requires bake preconditioning before reflow per J-STD-020 due to extended floor life limitations |
Pinout & Package
44-pin Thin Small Outline Package (TSOP II), 400 mil width, JEDEC MO-143AC compliant, lead-free finish not available (Pb-free version discontinued).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A17 selects upper/lower memory bank |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with internal bus-hold circuitry to prevent floating states during tri-state |
| CE# | Chip Enable | Active-low global enable; device enters low-power standby when high, independent of OE#/WE# state |
| OE# | Output Enable | Active-low control for data bus output drivers; allows read operations without affecting write cycle timing |
| WE# | Write Enable | Active-low signal initiating write cycle; latches data on rising edge when CE# and OE# are inactive |
| UB#/LB# | Byte Write Control | Independent upper/lower byte write enable for 8-bit sub-word writes in 16-bit systems |
Key Features
| Feature | Design Value |
|---|---|
| Zero Power Standby | ICC < 1 µA when CE# = high - eliminates standby current drain in battery-backed or energy-sensitive applications |
| Byte-Controlled Writes | UB#/LB# pins enable selective 8-bit writes without external glue logic - reduces PCB routing complexity in mixed-bus systems |
| TTL-Compatible Inputs | VIL = 0.8 V, VIH = 2.0 V - ensures reliable interfacing with legacy 5 V microcontrollers and FPGAs without level shifters |
| Industrial Temp Range | –40°C to +85°C operation - validated across full range with no derating required for timing or voltage margins |
Applications
| Industrial PLC Data Buffer | Legacy Communication Interface |
|---|---|
Use Scenario: Storing protocol frame buffers and register-mapped I/O in programmable logic controllers with 16-bit data buses. IC Role / Device Role / Timing Role: Asynchronous parallel SRAM providing deterministic 55 ns read/write latency for real-time I/O scanning cycles. Use Value: Eliminates need for wait-state insertion on microcontroller bus, maintaining deterministic scan loop timing under full load. | Use Scenario: Acting as shared memory between UART/DMA controller and host processor in RS-485 fieldbus gateways. IC Role / Device Role / Timing Role: Dual-port-like buffer enabling concurrent read/write access via separate CE#/OE#/WE# timing control. Use Value: Supports full-duplex packet buffering without arbitration logic or external FIFOs, reducing gate count and BOM cost. |
| Medical Instrument Display Cache | Test Equipment Pattern Memory |
Use Scenario: Holding GUI bitmap frames and font lookup tables in portable diagnostic devices with LCD controllers. IC Role / Device Role / Timing Role: Static memory serving as pixel data cache with burst-read capability via address sequencing. Use Value: Enables smooth display updates at 60 Hz without CPU intervention, freeing processor for sensor acquisition tasks. | Use Scenario: Storing digital stimulus/response patterns in automated test equipment for semiconductor wafer probing. IC Role / Device Role / Timing Role: High-reliability SRAM retaining pattern data across power cycles when backed by supercapacitor. Use Value: Guarantees bit-perfect pattern replay accuracy over >100,000 test cycles without refresh-induced errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV25616AL-10TLI | 10 ns faster access (45 ns), same 256K×16 organization, 3.3 V only supply | Requires 3.3 V system rail; incompatible with 5 V logic without level translation | Select if migrating to lower-voltage design and timing margin is critical |
| AS6C4008-55TIN | Same 55 ns speed and 5 V supply, but 512K×8 organization (wider address bus needed) | Requires redesign of address decoding and data bus wiring for 8-bit interface | Select if higher density is needed and 8-bit data path is acceptable |
Compared with IS61LV25616AL-10TLI and AS6C4008-55TIN, CY7C1041D-2XWI uniquely balances 5 V compatibility, industrial temperature support, and 16-bit bus alignment-making it irreplaceable in legacy 5 V embedded systems where voltage and bus-width constraints prohibit redesign.
Availability
CY7C1041D-2XWI is available at Aetrix Electronics and suitable for industrial PLCs, medical instrumentation, legacy communication gateways, and test equipment requiring stable component supply amid long product lifecycles.
Supply support for CY7C1041D-2XWI 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 acquired Cypress Semiconductor in 2020 and maintains legacy SRAM product lines for industrial and automotive continuity.
This part belongs to the CY7C10xxD family of high-reliability parallel SRAMs designed specifically for long-lifecycle industrial control, medical, and test equipment where 5 V compatibility and MSL-5 process control are mandatory.
FAQ
Is CY7C1041D-2XWI RoHS compliant?
No. The CY7C1041D-2XWI is not RoHS compliant and contains lead per its original manufacturing specification. Infineon does not offer a RoHS-compliant drop-in replacement for this specific variant; redesign to IS61LV25616AL-10TLI or AS6C4008-55TIN is required for compliance.
What is the maximum clock frequency supported for read/write cycles?
This is an asynchronous SRAM with no clock input. Maximum effective throughput is determined by access time (55 ns) and cycle time (110 ns), allowing up to ~9.1 million words per second in burst mode with proper bus control timing.
Can CY7C1041D-2XWI operate with a 3.3 V supply?
No. The device requires 4.5–5.5 V VCC and is not specified for 3.3 V operation. Attempting 3.3 V supply results in undefined behavior, failed reads/writes, and potential data corruption due to insufficient noise margin and internal biasing.
Is there a pin-compatible replacement with extended temperature range?
No. The –40°C to +85°C rating is the widest available for this package and speed grade. Extended temperature variants (e.g., –40°C to +125°C) were never released for the CY7C1041D-2XWI; alternative SRAM families like IDT71V256SA require PCB redesign.
CY7C1041D-2XWI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 4Mbit
- Memory Organization:
- 256K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
CY7C1041D-2XWI FAQ
1.How can I place an order for CY7C1041D-2XWI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1041D-2XWI 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 CY7C1041D-2XWI reliable?
The price and inventory of CY7C1041D-2XWI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1041D-2XWI is usually 5 days.
3.What payment methods are accepted for CY7C1041D-2XWI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1041D-2XWI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1041D-2XWI?
CY7C1041D-2XWI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1041D-2XWI 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 CY7C1041D-2XWI?
For technical support, including CY7C1041D-2XWI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1041D-2XWI requirements.
6.How does Aetrix verify that CY7C1041D-2XWI is sourced from the original manufacturer or authorized distributors?
All CY7C1041D-2XWI 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 CY7C1041D-2XWI meets industry standards.
7.What is the process for return or replacement of CY7C1041D-2XWI?
All CY7C1041D-2XWI units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1041D-2XWI, 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 CY7C1041D-2XWI part is unused and in its original packaging.
Return procedure for CY7C1041D-2XWI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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