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Infineon Technologies CY7C1049CV33-15VC
- Part No.:
- CY7C1049CV33-15VC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 36-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1049CV33-15VC.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 36SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:3,216
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Product details
Overview
CY7C1049CV33-15VC from Cypress Semiconductor is a 512K × 8 (4-Mbit) high-speed CMOS static RAM with 15 ns access time, 3.3 V supply, TTL-compatible I/O, and automatic CE-controlled power-down. It operates in commercial temperature range (0°C to +70°C), supports easy memory expansion via active-low CE/OE/WE controls, and is used in embedded controllers, industrial PLCs, and network packet buffers where deterministic low-latency read/write is required.
For engineers reviewing the CY7C1049CV33-15VC datasheet, CY7C1049CV33-15VC pinout, CY7C1049CV33-15VC application, or CY7C1049CV33-15VC equivalent, key selection criteria include tAA = 15 ns, ISB2 = 10 µA standby current, VCC = 3.3 V ± 0.3 V, CE/OE/WE timing compatibility, and SOJ-36 package footprint for legacy board reuse.
Technical Context
The CY7C1049CV33-15VC implements a full asynchronous SRAM architecture with independent address decoding (A0–A18), bidirectional 8-bit I/O bus (I/O0–I/O7), and three-state output drivers controlled by CE, OE, and WE. Its internal power-down logic activates automatically when CE is HIGH, reducing ICC to ≤10 µA without external control.
Read operations require CE and OE LOW with WE HIGH; write operations require CE and WE LOW while OE may be HIGH or LOW. Output enable timing (tHZOE = 7 ns) and chip enable deactivation (tHZCE = 7 ns) are specified under 5 pF load, ensuring predictable bus release in multi-device systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 524,288 words × 8 bits (4 Mbit total); supports byte-wide data transfers without external multiplexing |
| Access Time (tAA) | 15 ns max; guarantees data valid within 15 ns of stable address and CE/OE assertion |
| Supply Voltage | 3.3 V ± 0.3 V; compatible with standard LVTTL and 3.3 V logic families |
| Standby Current (ISB2) | 10 µA max at VCC = 3.3 V; enables ultra-low-power retention during idle cycles |
| Operating Temperature | 0°C to +70°C; qualified for commercial-grade embedded and networking equipment |
| I/O Drive Strength | VOH ≥ 2.4 V @ –4 mA, VOL ≤ 0.4 V @ 8 mA; ensures robust noise margin on shared data buses |
| Power Dissipation | 324 mW max active; enables thermal management in dense PCB layouts without forced cooling |
Pinout & Package
The CY7C1049CV33-15VC is packaged in a 36-pin 400-mil SOJ (V36) with center power/ground pinout optimized for signal integrity and thermal distribution.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word addressing; no address multiplexing required |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit tristatable I/O lines; high-impedance during deselect, write, or OE HIGH |
| CE | Chip Enable | Active-low global enable; triggers automatic power-down when HIGH |
| OE | Output Enable | Active-low output gate; controls data bus drive without affecting internal state |
| WE | Write Enable | Active-low write strobe; latches data on I/O0–I/O7 when CE is also LOW |
| VCC | Supply Voltage | 3.3 V core and I/O supply; two dedicated pins (pins 15 & 36) reduce IR drop |
| GND | Ground | Signal and power return; two dedicated pins (pins 14 & 35) improve noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| 15 ns Access Time | Enables direct interface with 66 MHz system buses without wait states |
| Automatic CE Power-down | Reduces ICC to ≤10 µA without software or external logic intervention |
| TTL-Compatible I/O | Eliminates level-shifter requirements in mixed-voltage 3.3 V/5 V systems |
| SOJ-36 Pinout Compatibility | Supports drop-in replacement of legacy 512K×8 SRAMs in existing socketed designs |
| 2.0 V Data Retention | Maintains stored data during brown-out or controlled power sequencing down to 2.0 V |
Applications
| Industrial PLC Memory Buffer | Network Switch Packet Buffer |
|---|---|
Use Scenario: Storing real-time I/O scan data and ladder logic variables in programmable logic controllers with deterministic cycle times. IC Role / Device Role / Timing Role: Asynchronous byte-wide scratchpad memory providing sub-20 ns read/write for cyclic executive firmware. Use Value: 15 ns tAA ensures full register update within one 10 µs PLC scan cycle; low ISB2 extends battery-backed retention during AC loss. | Use Scenario: Temporarily holding Ethernet frames in layer-2 switching ASICs before forwarding or filtering decisions. IC Role / Device Role / Timing Role: Standalone frame buffer interfacing directly to MAC controller's parallel data bus. Use Value: TTL-compatible I/O and 3.3 V operation simplify integration with PHY/MAC ICs; SOJ-36 footprint allows retrofit into legacy switch PCBs. |
| Medical Imaging Control Board | Avionics Display Processor Cache |
Use Scenario: Caching configuration parameters and calibration lookup tables in ultrasound or MRI subsystem controllers. IC Role / Device Role / Timing Role: Nonvolatile-configurable SRAM used for fast-access parameter storage outside flash latency path. Use Value: 2.0 V data retention supports safe shutdown during power interruption; 324 mW max active power avoids thermal derating in sealed enclosures. | Use Scenario: Holding display list instructions and font glyphs in certified cockpit display units requiring predictable timing. IC Role / Device Role / Timing Role: Deterministic-access memory for real-time graphics rendering pipeline with zero jitter tolerance. Use Value: Fixed 15 ns tAA eliminates timing variability seen in DRAM-based caches; CE/OE/WE separation enables precise bus arbitration in dual-CPU architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AS6C4008-15PCN | Same 512K×8 organization, 15 ns access, but 3.3 V only; lower ISB2 (5 µA) and higher VOH (2.7 V min) | Preferred in new designs requiring lowest standby power; lacks industrial temp grade in this speed bin | Select if board layout allows TSOP-II footprint and design prioritizes <5 µA retention current over SOJ socket compatibility |
| IS61LV5128-15K | Identical SOJ-36 pinout and 15 ns speed; wider temp range (–40°C to +105°C); higher ICC active (120 mA vs 80 mA) | Suitable for extended-temperature avionics or automotive infotainment where Cypress part is not qualified | Choose when operating beyond 0°C–70°C range is mandatory and higher active power is acceptable |
Compared with AS6C4008-15PCN and IS61LV5128-15K, the CY7C1049CV33-15VC offers optimal balance of legacy SOJ-36 compatibility, proven commercial reliability, and integrated power-down-making it ideal for cost-sensitive industrial upgrades where footprint lock-in is critical.
Availability
CY7C1049CV33-15VC is available at Aetrix Electronics and suitable for industrial PLCs, network packet buffers, and medical imaging control boards requiring stable component supply and long-term obsolescence management.
Supply support for CY7C1049CV33-15VC 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, microcontrollers, and programmable solutions for industrial, automotive, and communications markets.
The CY7C1049CV33 belongs to Cypress's legacy high-speed asynchronous SRAM product line, designed specifically for systems demanding deterministic timing, low-power retention, and pin-compatible migration from older 5 V SRAMs.
FAQ
What is the maximum clock frequency supported by CY7C1049CV33-15VC?
The CY7C1049CV33-15VC is an asynchronous SRAM and does not use a clock signal. Its maximum operational speed is defined by access time (tAA = 15 ns) and cycle time (tRC = 15 ns), enabling reliable interface with 66 MHz system buses when using proper address/data setup/hold margins. No external clock input is present or required.
Can CY7C1049CV33-15VC operate at 2.5 V?
No. The CY7C1049CV33-15VC is specified only for 3.3 V ± 0.3 V operation (3.0 V to 3.6 V). Operation below 3.0 V violates the Absolute Maximum Ratings and risks data corruption or failure to meet tAA/tRC specifications. For 2.5 V systems, consider the CY7C1041V33 series or other voltage-scaled SRAMs.
Does CY7C1049CV33-15VC support battery backup mode?
Yes. The device retains data down to 2.0 V supply and draws ≤10 µA in CE HIGH standby (ISB2), making it suitable for battery-backed applications. However, it lacks built-in battery switchover circuitry - external diode-or or power-path controller is required to manage VCC/battery transition safely.
Is the SOJ-36 package RoHS compliant?
Yes. The CY7C1049CV33-15VC in V36 (36-pin SOJ) packaging meets RoHS Directive 2011/65/EU requirements, with lead-free terminations and compliant molding compound. Full compliance documentation, including substance declarations and test reports, is available upon request from Aetrix Electronics.
CY7C1049CV33-15VC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 36-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:
- 512K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 15ns
- Access Time:
- 15 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 36-SOJ
CY7C1049CV33-15VC FAQ
1.How can I place an order for CY7C1049CV33-15VC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1049CV33-15VC 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 CY7C1049CV33-15VC reliable?
The price and inventory of CY7C1049CV33-15VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1049CV33-15VC is usually 5 days.
3.What payment methods are accepted for CY7C1049CV33-15VC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1049CV33-15VC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1049CV33-15VC?
CY7C1049CV33-15VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1049CV33-15VC 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 CY7C1049CV33-15VC?
For technical support, including CY7C1049CV33-15VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1049CV33-15VC requirements.
6.How does Aetrix verify that CY7C1049CV33-15VC is sourced from the original manufacturer or authorized distributors?
All CY7C1049CV33-15VC 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 CY7C1049CV33-15VC meets industry standards.
7.What is the process for return or replacement of CY7C1049CV33-15VC?
All CY7C1049CV33-15VC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1049CV33-15VC, 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 CY7C1049CV33-15VC part is unused and in its original packaging.
Return procedure for CY7C1049CV33-15VC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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