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Infineon Technologies CY7C1041BNL-20VXCT
- Part No.:
- CY7C1041BNL-20VXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1041BNL-20VXCT.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:2,291
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Product details
Overview
CY7C1041BNL-20VXCT from Cypress Semiconductor is a 256K × 16-bit (4-Mbit) high-speed CMOS static RAM with 20 ns access time, TTL-compatible I/O, and automatic CE-controlled power-down. It operates at 5 V ±0.5 V, supports industrial temperature range (–40°C to +85°C), and uses byte-wide write enable (BLE/BHE) for selective 8-bit writes. It is deployed in real-time industrial controllers requiring deterministic memory access and low standby power.
For engineers reviewing the CY7C1041BNL-20VXCT datasheet, CY7C1041BNL-20VXCT pinout, CY7C1041BNL-20VXCT application, or CY7C1041BNL-20VXCT equivalent, key selection criteria include tAA = 20 ns read timing, ISB2 = 0.5 mA CMOS standby current (L version), 44-pin SOJ package compatibility, and byte-selectable write architecture for embedded buffer management.
Technical Context
The CY7C1041BNL-20VXCT implements a fully asynchronous SRAM interface with independent byte enables (BLE/BHE) enabling partial-word writes without external logic. Its internal voltage regulator converts 5 V to 3.3 V for core operation, reducing noise sensitivity while maintaining TTL-level I/O compatibility.
It features dual power-down modes: ISB1 (TTL-input active power-down, 40 mA max) and ISB2 (CMOS-input active power-down, 0.5 mA max for L version), triggered automatically when CE is deasserted and inputs are stable. The device uses center-power/center-ground pinout in both SOJ and TSOP II packages to minimize switching noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 16-bit (4,194,304 bits); supports 16-bit data bus without glue logic |
| Access Time (tAA) | 20 ns max; guarantees deterministic read latency for hard real-time control loops |
| Supply Voltage | 5 V ±0.5 V; compatible with legacy 5 V logic systems and mixed-voltage board designs |
| Standby Current (ISB2) | 0.5 mA max (L version, CMOS inputs); enables ultra-low-power sleep mode in battery-backed systems |
| Data Retention Voltage | 2.0 V minimum; retains memory contents during brown-out or controlled power-down sequences |
| Operating Temperature | –40°C to +85°C (industrial grade); qualified for factory automation and motor drive environments |
| I/O Capacitance | 8 pF max per pin; reduces signal integrity risk on high-density PCBs with tight trace routing |
Pinout & Package
The CY7C1041BNL-20VXCT is supplied in a 44-pin molded SOJ (400-mil body width) package with center power (VCC) and center ground (VSS) pins-optimized for noise reduction and thermal distribution. Pin numbering follows JEDEC standard SOJ layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A0 = LSB |
| I/O0–I/O7 | Data I/O (Lower Byte) | Bidirectional 8-bit data path enabled by BLE; high-impedance when deselected or during write |
| I/O8–I/O15 | Data I/O (Upper Byte) | Bidirectional 8-bit data path enabled by BHE; independent control enables partial-word writes |
| CE | Chip Enable | Active-low global select; triggers automatic power-down when HIGH and inputs stable |
| OE | Output Enable | Active-low output gate; controls data bus drivers independently of CE and WE |
| WE | Write Enable | Active-low write strobe; initiates write cycle when CE is LOW; defines write overlap window |
| BLE | Byte Low Enable | Active-low enable for I/O0–I/O7; allows lower-byte-only writes without affecting upper byte |
| BHE | Byte High Enable | Active-low enable for I/O8–I/O15; enables upper-byte-only writes with no read-modify-write overhead |
| VCC | Power Supply | +5 V supply; internally regulated to 3.3 V for core logic; pin 23 and 32 are VCC |
| VSS | Ground | Signal and power ground; pin 22 and 31 are VSS for low-inductance return paths |
Key Features
| Feature | Design Value |
|---|---|
| Byte-selectable write architecture | Independent BLE/BHE pins eliminate need for external byte-mask logic in 16-bit microcontroller interfaces |
| Automatic CE power-down | Reduces ICC to 0.5 mA (L version) without external control signals-ideal for intermittent polling systems |
| 2.0 V data retention | Enables memory hold during 5 V rail collapse while preserving state for fast recovery (e.g., PLC warm restart) |
| TTL-compatible I/O | Direct interface with legacy 5 V microcontrollers and FPGAs without level-shifting components |
| Center VCC/VSS pinout | Minimizes simultaneous switching noise and improves power delivery stability in high-speed memory buses |
Applications
| Industrial PLC Data Buffers | Automotive Engine Control Units |
|---|---|
Use Scenario: Storing real-time sensor sampling buffers and I/O mapping tables in programmable logic controllers with deterministic scan cycles. IC Role / Device Role / Timing Role: Asynchronous SRAM providing zero-wait-state 16-bit data access synchronized to 20 ns CPU bus timing. Use Value: Eliminates wait states in ladder logic execution; 0.5 mA standby current extends backup battery life during power-loss events. | Use Scenario: Holding calibration parameters and transient engine knock detection history in ECU modules operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Nonvolatile-retentive memory buffer retaining critical tuning data during ignition cycling and brown-out conditions. Use Value: 2.0 V data retention ensures parameter integrity during 5 V rail dropout; industrial temp rating avoids derating in under-hood environments. |
| Medical Imaging Frame Stores | Test & Measurement Digitizer Memory |
Use Scenario: Capturing raw pixel streams from analog front-ends in portable ultrasound devices before DSP processing. IC Role / Device Role / Timing Role: High-bandwidth frame buffer interfacing directly to 16-bit ADC output and ARM Cortex-M7 AHB bus. Use Value: 20 ns tAA enables single-cycle reads at 50 MHz bus clock; 8 pF I/O capacitance maintains signal fidelity at >20 MHz data rates. | Use Scenario: Acting as acquisition memory in handheld oscilloscopes capturing 16-bit waveform samples at 10 MS/s. IC Role / Device Role / Timing Role: Deterministic-access memory supporting burst-mode FIFO fill with precise timestamp alignment. Use Value: BLE/BHE byte enables allow selective overwrite of metadata fields without disturbing active sample buffers-reducing firmware overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed asynchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISSI IS61LV25616AL-20TQLI | 20 ns access, same 256K×16 organization, but uses 48-pin TSOPII (not SOJ); ISB = 1 µA typical (lower than CY7C1041BNL-20VXCT's 0.5 mA) | Requires PCB redesign due to different footprint and pinout; better for new designs targeting lowest standby power | Select if migrating to TSOPII and prioritizing sub-µA standby over SOJ compatibility |
| Cypress CY7C1041DV33-20ZC | 3.3 V core supply (no internal regulator); 20 ns access; same SOJ/TSOP II footprints; ISB = 10 µA typical | Not 5 V tolerant-requires dedicated 3.3 V rail; incompatible with legacy 5 V systems using CY7C1041BNL-20VXCT | Select only for new 3.3 V designs where voltage translation is acceptable and ultra-low ISB is critical |
Compared with IS61LV25616AL-20TQLI and CY7C1041DV33-20ZC, the CY7C1041BNL-20VXCT uniquely supports direct 5 V system integration with industrial temperature rating and SOJ drop-in compatibility-making it optimal for retrofitting or maintaining legacy controller hardware.
Availability
CY7C1041BNL-20VXCT is available at Aetrix Electronics and suitable for industrial PLCs, automotive ECUs, and medical imaging subsystems requiring stable component supply, long-lifecycle support, and Pb-free compliance.
Supply support for CY7C1041BNL-20VXCT 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 consumer applications.
The CY7C1041B series was designed specifically for high-reliability, high-speed asynchronous memory applications in harsh-environment embedded systems-emphasizing deterministic timing, low-power standby, and robust 5 V interface compatibility.
FAQ
What is the maximum operating current for CY7C1041BNL-20VXCT at 20 ns speed?
The maximum operating current (ICC) is 170 mA under commercial conditions and 190 mA under industrial conditions (–40°C to +85°C), measured at VCC = 5.5 V and f = 1/tRC. This value reflects worst-case dynamic power during continuous read/write cycling with all I/O lines loaded.
Does CY7C1041BNL-20VXCT support true 2.0 V operation or only data retention at 2.0 V?
CY7C1041BNL-20VXCT requires 5 V ±0.5 V for active operation. The 2.0 V specification applies exclusively to data retention mode-when CE is HIGH and VCC is reduced to ≥2.0 V, memory contents are preserved with ICCDR ≤200 µA. It does not operate functionally at 2.0 V.
Can BLE and BHE be asserted simultaneously for full 16-bit writes?
Yes. When both BLE and BHE are LOW, the device performs a full 16-bit write to the addressed location using I/O0–I/O15. This is the default write mode and matches standard SRAM behavior-no additional timing constraints apply beyond those specified for tWC and tSD.
Is the 44-pin SOJ package of CY7C1041BNL-20VXCT RoHS-compliant?
Yes. The "X" suffix in CY7C1041BNL-20VXCT denotes Pb-free (RoHS-compliant) construction. The package uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) requirements for standard surface-mount assembly.
CY7C1041BNL-20VXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-BSOJ (0.400", 10.16mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-20VXCT FAQ
1.How can I place an order for CY7C1041BNL-20VXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1041BNL-20VXCT 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-20VXCT reliable?
The price and inventory of CY7C1041BNL-20VXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1041BNL-20VXCT is usually 5 days.
3.What payment methods are accepted for CY7C1041BNL-20VXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1041BNL-20VXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1041BNL-20VXCT?
CY7C1041BNL-20VXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1041BNL-20VXCT 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-20VXCT?
For technical support, including CY7C1041BNL-20VXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1041BNL-20VXCT requirements.
6.How does Aetrix verify that CY7C1041BNL-20VXCT is sourced from the original manufacturer or authorized distributors?
All CY7C1041BNL-20VXCT 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-20VXCT meets industry standards.
7.What is the process for return or replacement of CY7C1041BNL-20VXCT?
All CY7C1041BNL-20VXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1041BNL-20VXCT, 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-20VXCT part is unused and in its original packaging.
Return procedure for CY7C1041BNL-20VXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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