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Infineon Technologies CY7C1041D-10VXI
- Part No.:
- CY7C1041D-10VXI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1041D-10VXI.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:2,275
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Product details
Overview
CY7C1041D-10VXI from Cypress Semiconductor is a 4-Mbit (256 K × 16) high-speed CMOS static RAM with 10 ns access time, 5 V supply, TTL-compatible I/O, and automatic CE power-down. It supports byte-wide writes via independent BHE/ BLE controls and operates across –40 °C to +85 °C for industrial embedded memory expansion in microcontroller-based systems.
For engineers reviewing the CY7C1041D-10VXI datasheet, CY7C1041D-10VXI pinout, CY7C1041D-10VXI application, or CY7C1041D-10VXI equivalent, key selection factors include tAA = 10 ns read timing, ISB2 = 10 µA CMOS standby current, 2.0 V data retention, 44-pin SOJ package compatibility, and byte-enable interface for 16-bit bus partitioning.
Technical Context
The CY7C1041D-10VXI implements a synchronous, non-volatile-retentive SRAM architecture with dual-byte write enable (BHE/BLE), TTL-level input thresholds (VIH = 2.0 V min), and output drive compliant with –4 mA VOH and 8 mA VOL. Its address decoding covers A0–A17 (18-bit), supporting 256K word addressing.
It features automatic power-down when CE is deasserted, with two standby current modes: ISB1 = 20 µA (TTL inputs) and ISB2 = 10 µA (CMOS inputs). Data retention at VCC = 2.0 V enables low-power hold mode without external refresh.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| tAA | 10 ns maximum address-to-data valid delay - ensures deterministic read latency for 100 MHz bus timing budgets. |
| ICC (active) | 90 mA at 10 ns - defines peak power draw during burst reads/writes at rated speed. |
| ISB2 | 10 µA CMOS standby current - enables ultra-low-power hold mode when deselected with CMOS-compatible control signals. |
| VDR | 2.0 V minimum data retention voltage - allows memory state preservation during brown-out or controlled power-gating. |
| Package | 44-pin SOJ, 400-mil body width - industry-standard footprint compatible with legacy PCB layouts and socketed prototyping. |
| Interface | TTL-compatible inputs/outputs - directly interfaces with 5 V microcontrollers (e.g., 8051, Z80, older ARM7) without level-shifting. |
| Organization | 256 K × 16 - provides 512 KB of parallel-access memory space, suitable for frame buffers or firmware scratchpad in resource-constrained systems. |
Pinout & Package
44-pin SOJ (400-mil) package with center power/ground pinout - optimized for signal integrity and thermal dissipation in dense industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE | Chip Enable | Active-low global select; enables internal logic and disables outputs when HIGH, triggering automatic power-down. |
| OE | Output Enable | Active-low read gate; controls output drivers only - does not affect internal power state. |
| WE | Write Enable | Active-low write strobe; initiates write cycle when CE is LOW and WE transitions LOW. |
| BHE | Byte High Enable | Active-low control for I/O8–I/O15; enables high-byte write/read independently of low byte. |
| BLE | Byte Low Enable | Active-low control for I/O0–I/O7; enables low-byte write/read independently of high byte. |
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; no internal multiplexing required. |
| I/O0–I/O15 | Bi-directional Data Bus | 16-bit parallel I/O with three-state control; enters high-Z on CE HIGH, OE HIGH, or during write cycles. |
Key Features
| Feature | Design Value |
|---|---|
| Pin- and function-compatible with CY7C1041B | Enables drop-in replacement in existing designs without layout or firmware changes. |
| Automatic CE power-down | Reduces standby current to 10 µA without requiring external control logic or sleep-mode sequencing. |
| Independent byte-write control (BHE/BLE) | Allows partial-word writes without read-modify-write cycles - critical for efficient 8-bit peripheral interfacing on 16-bit buses. |
| 2.0 V data retention | Permits system-level power gating while preserving memory contents - reduces overall system energy consumption during idle periods. |
| TTL-compatible I/O levels | Eliminates need for level translators when interfacing with legacy 5 V logic families, lowering BOM cost and board area. |
Applications
| Industrial PLC Data Buffer | Legacy Microcontroller Firmware Cache |
|---|---|
Use Scenario: Real-time I/O scan buffer in programmable logic controllers requiring deterministic 10 ns memory access. IC Role / Device Role / Timing Role: Parallel SRAM acting as dual-port-accessible data exchange buffer between CPU and fieldbus interface ASIC. Use Value: tAA = 10 ns and tRC = 10 ns guarantee sub-cycle memory response, enabling 100 MHz bus arbitration without wait states. |
Use Scenario: External code/data cache for 8051 or Z80-based instrumentation firmware with limited on-chip RAM. IC Role / Device Role / Timing Role: Memory-mapped XDATA space extension providing 512 KB of fast, non-refreshed storage for calibration tables and runtime variables. Use Value: TTL-compatible VIH/VIL thresholds ensure direct connection to 5 V MCU buses; BHE/BLE support byte-aligned variable access without software overhead. |
| Automotive Body Control Module | Medical Diagnostic Equipment Frame Store |
Use Scenario: Non-volatile parameter storage and transient log buffer in automotive BCMs operating across –40 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Industrial-grade SRAM holding configuration registers and fault-event timestamps during ECU power cycling. Use Value: VDR = 2.0 V and ISB2 = 10 µA allow safe data retention during battery brown-outs below 3.3 V, meeting ISO 16750-2 requirements. |
Use Scenario: Real-time image line buffer in portable ultrasound or ECG analyzers requiring zero-refresh, deterministic latency. IC Role / Device Role / Timing Role: High-reliability parallel memory staging raw sensor samples before DSP processing or display rendering. Use Value: 44-pin SOJ package offers proven thermal performance (θJA = 57.9 °C/W) under continuous operation, minimizing thermal derating in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AS6C4008-10TIN | 4-Mbit (256 K × 16), 10 ns, 3.3 V core - requires level translation for 5 V systems. | Designed for low-voltage embedded systems; lacks 2.0 V data retention and TTL compatibility. | Select when migrating to 3.3 V platforms and redesigning I/O interface; not drop-in for CY7C1041D-10VXI. |
| IS61LV25616AL-10TLI | 4-Mbit (256 K × 16), 10 ns, 3.3 V supply, LVTTL-compatible - higher ISB2 = 25 µA. | Optimized for mixed-signal SoC interfaces; no 2.0 V retention mode or automatic CE power-down. | Prefer for new 3.3 V designs needing lower active power; avoid where 5 V TTL interfacing or brown-out retention is required. |
Compared with AS6C4008-10TIN and IS61LV25616AL-10TLI, the CY7C1041D-10VXI uniquely delivers 5 V TTL compatibility, 2.0 V data retention, and automatic CE power-down - making it irreplaceable in legacy industrial and automotive systems requiring robust 5 V operation and fail-safe memory hold.
Availability
CY7C1041D-10VXI is available at Aetrix Electronics and suitable for industrial PLCs, legacy microcontroller-based instrumentation, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY7C1041D-10VXI 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
Cypress Semiconductor (now part of Infineon Technologies) is a U.S.-based semiconductor company specializing in memory, PSoC, and USB solutions for industrial, automotive, and consumer applications.
The CY7C1041D belongs to Cypress's legacy high-speed parallel SRAM product line, designed specifically for 5 V TTL-based embedded systems requiring deterministic timing, low standby power, and long-term obsolescence resilience.
FAQ
Is CY7C1041D-10VXI compatible with 3.3 V microcontrollers?
No. The CY7C1041D-10VXI is specified for 5 V ±0.5 V operation and features TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V). Interfacing with 3.3 V logic requires level-shifting circuitry; direct connection risks unreliable read/write behavior due to insufficient VIH margin.
What is the significance of the "VXI" suffix in CY7C1041D-10VXI?
The "VXI" suffix denotes a 44-pin SOJ package (V), industrial temperature range (–40 °C to +85 °C) (X), and lead-free (RoHS-compliant) finish (I). It confirms compliance with JEDEC standard SOJ-44 mechanical dimensions and Pb-free soldering profiles.
Does CY7C1041D-10VXI require an external clock or refresh circuitry?
No. As a static RAM, the CY7C1041D-10VXI has no clock input and requires no refresh cycles. Data retention is maintained as long as VCC remains ≥ 2.0 V and CE is held HIGH during standby - eliminating timing-critical controller overhead.
Can BHE and BLE be asserted simultaneously for full 16-bit access?
Yes. When both BHE and BLE are LOW, all 16 I/O lines (I/O0–I/O15) are enabled for simultaneous read or write. This mode provides full-word bandwidth and matches standard 16-bit bus transactions without software byte masking.
CY7C1041D-10VXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-BSOJ (0.400", 10.16mm Width)
- Packaging:
- Tube
- 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:
- 10ns
- Access Time:
- 10 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-SOJ
CY7C1041D-10VXI FAQ
1.How can I place an order for CY7C1041D-10VXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1041D-10VXI 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-10VXI reliable?
The price and inventory of CY7C1041D-10VXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1041D-10VXI is usually 5 days.
3.What payment methods are accepted for CY7C1041D-10VXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1041D-10VXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1041D-10VXI?
CY7C1041D-10VXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1041D-10VXI 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-10VXI?
For technical support, including CY7C1041D-10VXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1041D-10VXI requirements.
6.How does Aetrix verify that CY7C1041D-10VXI is sourced from the original manufacturer or authorized distributors?
All CY7C1041D-10VXI 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-10VXI meets industry standards.
7.What is the process for return or replacement of CY7C1041D-10VXI?
All CY7C1041D-10VXI units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1041D-10VXI, 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-10VXI part is unused and in its original packaging.
Return procedure for CY7C1041D-10VXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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