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Infineon Technologies CY7C1041BNL-20VXC
- Part No.:
- CY7C1041BNL-20VXC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1041BNL-20VXC.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,259
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Product details
Overview
CY7C1041BNL-20VXC from Cypress Semiconductor is a 256K × 16-bit (4-Mbit) high-speed CMOS static RAM with 20 ns maximum access time, TTL-compatible I/O, and automatic CE-controlled power-down. It operates at 5 V ±0.5 V, supports byte-wide writes via independent BLE/BHE controls, and retains data down to 2.0 V. Used in industrial control modules requiring deterministic memory access and low standby power.
For engineers reviewing the CY7C1041BNL-20VXC datasheet, CY7C1041BNL-20VXC pinout, CY7C1041BNL-20VXC application, or CY7C1041BNL-20VXC equivalent, key selection criteria include tAA ≤ 20 ns, ISB2 ≤ 0.5 mA (L version), SOJ-44 Pb-free package compatibility, and dual-byte enable support for 16-bit bus partitioning.
Technical Context
The CY7C1041BNL-20VXC implements a full asynchronous SRAM architecture with independent byte enables (BLE/BHE) enabling selective lower- or upper-byte writes without affecting adjacent data. Its internal voltage regulator steps 5 V to 3.3 V for core logic, decoupling I/O signaling from core operation.
Read and write operations are fully controlled by CE, OE, WE, BLE, and BHE with defined timing windows (tAA = 20 ns, tRC = 20 ns, tPD = 20 ns). The device enters automatic power-down when CE is HIGH, reducing ICC to ≤0.5 mA under CMOS input conditions - critical for battery-backed or low-duty-cycle systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 16-bit (4,194,304 bits); supports 16-bit parallel bus interface without external width expansion. |
| Access Time (tAA) | 20 ns max; guarantees data valid within 20 ns of address/CE/OE assertion - enables tight timing closure in 50-MHz bus systems. |
| Supply Voltage | 5.0 V ±0.5 V; compatible with legacy 5-V TTL/CMOS logic families and eliminates need for level shifters. |
| Standby Current (ISB2) | 0.5 mA max (L version, CMOS inputs); enables ultra-low-power retention mode during system sleep states. |
| Data Retention Voltage | 2.0 V min; maintains stored data with only 200 µA ICCDR draw - suitable for backup battery or capacitor hold-up designs. |
| Package | 44-pin molded SOJ (400-mil width), Pb-free; industry-standard footprint with center VCC/VSS pinout for noise reduction. |
| Operating Temperature | –40°C to +85°C (Industrial grade); qualified for extended thermal cycling in motor drives and PLCs. |
Pinout & Package
Package: 44-pin molded SOJ (400-mil body width), Pb-free, with center power/ground pin arrangement (VCC on pins 15 & 31, VSS on pins 14 & 32) per Cypress 51-85082 package drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; no address multiplexing required. |
| I/O0–I/O7 | Lower-Byte Data I/O | Bidirectional 8-bit data path enabled only when BLE = LOW; isolated from upper byte during partial writes. |
| I/O8–I/O15 | Upper-Byte Data I/O | Bidirectional 8-bit data path enabled only when BHE = LOW; enables independent 16-bit bus partitioning. |
| CE | Chip Enable | Active-LOW global select; forces automatic power-down and high-Z I/O when HIGH - primary power gating signal. |
| OE | Output Enable | Active-LOW read strobe; controls output drivers independently of CE/WE - enables shared-bus contention management. |
| WE | Write Enable | Active-LOW write strobe; initiates write cycle when CE = LOW; timing-critical for tPWE ≥ 13 ns compliance. |
| BLE | Byte Low Enable | Active-LOW control for I/O0–I/O7; allows lower-byte write masking without disturbing upper byte. |
| BHE | Byte High Enable | Active-LOW control for I/O8–I/O15; enables true 16-bit split-write capability per address location. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic CE Power-Down | Reduces ICC to ≤0.5 mA (ISB2) when CE = HIGH - eliminates need for external power sequencing logic. |
| Dual Independent Byte Enables | BLE/BHE allow simultaneous or separate lower/upper byte writes - avoids read-modify-write cycles in 16-bit microcontroller interfaces. |
| 2.0 V Data Retention | Maintains memory contents at 2.0 V with only 200 µA draw - enables use with single-cell LiFePO₄ or supercapacitor backup. |
| TTL-Compatible I/O | VIL ≤ 0.8 V, VOH ≥ 2.4 V at IOL = 8 mA - interoperable with legacy 5-V microcontrollers and FPGAs without level translation. |
| Center-Pin VCC/VSS Layout | VCC on pins 15/31 and VSS on pins 14/32 - reduces simultaneous switching noise and improves signal integrity on dense PCBs. |
Applications
| Industrial PLC Memory Buffer | Automotive Engine Control Unit (ECU) Log Storage |
|---|---|
Use Scenario: Stores real-time sensor history and fault codes in programmable logic controllers operating in factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Asynchronous SRAM buffer interfacing directly to ARM9 or ColdFire MCU local bus with no wait states at 50-MHz clock rates. Use Value: 20 ns tAA ensures deterministic response to interrupt-driven data capture; ISB2 ≤ 0.5 mA extends runtime during brown-out events. | Use Scenario: Holds diagnostic snapshots and calibration tables in engine control units exposed to under-hood temperatures up to +85°C. IC Role / Device Role / Timing Role: Nonvolatile shadow RAM accessed via MPC56xx QSPI-emulated parallel interface during vehicle cranking intervals. Use Value: 2.0 V data retention enables reliable logging even during 6-V battery dips; industrial-grade temp rating ensures long-term reliability. |
| Medical Imaging Frame Buffer | Avionics Display Controller Cache |
Use Scenario: Buffers uncompressed grayscale image frames (1024×768 @ 16 bpp) in portable ultrasound devices with strict power budgets. IC Role / Device Role / Timing Role: Dual-port-capable SRAM used in ping-pong configuration for seamless frame capture and display refresh. Use Value: BLE/BHE enables independent pixel row writes without corrupting adjacent rows; low active power (1540 mW max) limits thermal load. | Use Scenario: Caches GUI assets and overlay metadata in certified cockpit display units where EMI resilience and thermal stability are mandatory. IC Role / Device Role / Timing Role: High-reliability SRAM mapped into PowerPC 440GX local memory space with ECC disabled due to deterministic timing requirements. Use Value: Pb-free SOJ package meets DO-160G section 22 emission limits; 44-pin footprint simplifies conformal coating and rework. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed parallel SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISSI IS61LV25616AL-20TQLI | 20 ns tAA, same 256K×16 organization, but uses TSOP-II (not SOJ); ISB = 1 µA (vs. 0.5 µA) | Requires PCB redesign for TSOP-II footprint; lacks SOJ mechanical robustness in high-vibration avionics. | Select if board layout already uses TSOP-II and sub-µA standby is not required. |
| Renesas R1LV25616AS-20SI | 20 ns tAA, SOJ-44 Pb-free, but rated only for commercial temp (0°C to +70°C); ISB = 1.5 µA | Not qualified for industrial or automotive ambient ranges; unsuitable for extended temperature deployments. | Choose only for cost-sensitive consumer-grade equipment with controlled thermal environments. |
Compared with IS61LV25616AL-20TQLI and R1LV25616AS-20SI, the CY7C1041BNL-20VXC uniquely combines industrial temperature rating, 0.5 mA standby current, and Pb-free SOJ-44 packaging - making it the sole option for vibration-prone, thermally demanding embedded systems requiring drop-in replacement of legacy CY7C1041BN variants.
Availability
CY7C1041BNL-20VXC is available at Aetrix Electronics and suitable for industrial PLCs, automotive ECUs, medical imaging subsystems, and avionics display controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY7C1041BNL-20VXC 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 fabless semiconductor company specializing in memory, microcontrollers, and connectivity solutions for industrial, automotive, and IoT applications.
The CY7C1041B series was designed specifically for high-reliability, low-latency parallel memory interfacing in resource-constrained embedded systems - emphasizing timing predictability, power efficiency, and mechanical robustness in SOJ packaging.
FAQ
What is the minimum VCC required to retain data in CY7C1041BNL-20VXC?
Data retention is guaranteed at VCC = 2.0 V with ICCDR ≤ 200 µA, provided CE remains HIGH and input voltages stay within CMOS thresholds (VIN < 0.3 V or VIN > VCC – 0.3 V). This applies only to the "L" version; standard CY7C1041BN requires ≥4.5 V for retention.
Does CY7C1041BNL-20VXC support true concurrent read/write operations?
No - it is a single-port asynchronous SRAM. Read and write operations are mutually exclusive per address location. Concurrent access requires external arbitration or use of dual-port SRAMs like the CY7C1356BV.
Can BLE and BHE be asserted simultaneously for full 16-bit writes?
Yes. When both BLE and BHE are LOW while CE and WE are LOW, data on I/O0–I/O15 is written to the addressed location. The truth table confirms "Write All bits" mode under CE=L, WE=L, BLE=L, BHE=L conditions.
Is the 44-pin SOJ package of CY7C1041BNL-20VXC compatible with CY7C1041BN-20VXC footprints?
Yes - both share identical 44-pin molded SOJ (51-85082) mechanical dimensions, pad layout, and center VCC/VSS pinout. The "L" suffix denotes low standby current; all electrical and physical interfaces remain pin-for-pin compatible.
CY7C1041BNL-20VXC 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:
- 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:
- 44-SOJ
CY7C1041BNL-20VXC FAQ
1.How can I place an order for CY7C1041BNL-20VXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1041BNL-20VXC 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 CY7C1041BNL-20VXC reliable?
The price and inventory of CY7C1041BNL-20VXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1041BNL-20VXC is usually 5 days.
3.What payment methods are accepted for CY7C1041BNL-20VXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1041BNL-20VXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1041BNL-20VXC?
CY7C1041BNL-20VXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1041BNL-20VXC 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 CY7C1041BNL-20VXC?
For technical support, including CY7C1041BNL-20VXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1041BNL-20VXC requirements.
6.How does Aetrix verify that CY7C1041BNL-20VXC is sourced from the original manufacturer or authorized distributors?
All CY7C1041BNL-20VXC 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 CY7C1041BNL-20VXC meets industry standards.
7.What is the process for return or replacement of CY7C1041BNL-20VXC?
All CY7C1041BNL-20VXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1041BNL-20VXC, 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 CY7C1041BNL-20VXC part is unused and in its original packaging.
Return procedure for CY7C1041BNL-20VXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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