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Infineon Technologies CY7C141-25JXC
- Part No.:
- CY7C141-25JXC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
CY7C141-25JXC.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,773
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Product details
Overview
CY7C141-25JXC from Cypress Semiconductor is a 1K × 8 true dual-port static RAM with independent left/right ports, 25 ns maximum access time, 5 V supply, and 52-pin PLCC package. It functions as a slave device in 16-bit+ bus expansion systems paired with CY7C131/131A masters, enabling simultaneous read/write access to shared memory in multi-processor DSP cache buffers.
For engineers reviewing the CY7C141-25JXC datasheet, CY7C141-25JXC pinout, CY7C141-25JXC application, or CY7C141-25JXC equivalent, key selection criteria include BUSY-input arbitration logic, INT flag support for port-to-port signaling, automatic per-port power-down control, and compatibility with industrial temperature (–40°C to +85°C) operation.
Technical Context
This device implements fully asynchronous dual-port architecture with separate address, data, and control lines per port (A0L–A9L/I/O0L–I/O7L/CEL/R/WL/OEL on left; A0R–A9R/I/O0R–I/O7R/CER/R/WR/OER on right). BUSY is an input-only signal used for collision detection during master-slave arbitration, unlike the open-drain BUSY output on master devices.
It supports two distinct operational modes: standalone 8-bit dual-port memory or slave unit in 16-bit-wide configurations when cascaded with CY7C131/131A. The INT flag enables inter-port communication via fixed interrupt addresses (3FFH left, 3FEH right), and per-port CE-driven power-down reduces standby current to 45 mA (industrial grade).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 bits (1024 words × 8-bit data width) |
| Access Time | 25 ns max - determines minimum read cycle time (tRC) in high-speed DSP or bit-slice systems |
| Supply Voltage | 5 V ±10% - compatible with standard TTL/CMOS logic rails and industrial 5 V power domains |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and communications equipment |
| Standby Current (ISB1) | 45 mA max (both ports disabled) - enables low-power idle states in battery-backed or energy-sensitive designs |
| Package Type | 52-pin PLCC - surface-mount compatible with automated assembly and thermal performance suitable for dense PCB layouts |
| Bus Arbitration | BUSY input only - requires external master (e.g., CY7C131) to drive BUSY; no internal arbitration logic |
Pinout & Package
CY7C141-25JXC is housed in a 52-pin Plastic Leaded Chip Carrier (PLCC) package with J-lead configuration, lead-free compliant, and body size 19.1 mm × 19.1 mm. Pin 1 is located at the index corner adjacent to the notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left/Right) | Active-low per-port enable; controls power-down state and I/O tri-state independently |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low write strobe; high = read, low = write; defines direction of data flow per port |
| OEL / OER | Output Enable (Left/Right) | Active-low control of output drivers; allows independent read gating without disabling chip |
| A0L–A9L / A0R–A9R | Address Inputs (Left/Right) | 10-bit address bus per port; selects one of 1024 memory locations for concurrent access |
| I/O0L–I/O7L / I/O0R–I/O7R | Data Bus (Left/Right) | Bidirectional 8-bit data path per port; supports simultaneous read/write across ports |
| BUSY | Arbitration Input | Input-only signal indicating memory contention; driven by master device (e.g., CY7C131) during address collision |
| INTL / INTR | Interrupt Flag (Left/Right) | Open-drain outputs signaling inter-port events; require external pull-up; tied to fixed addresses 3FFH/3FEH |
| VCC / GND | Power Supply / Ground | Single 5 V supply with dedicated ground plane; decoupling required near pins 1 and 52 per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Enables concurrent, independent read/write operations on left and right ports without internal arbitration overhead |
| Slave-mode BUSY input | Eliminates need for external arbitration logic when paired with CY7C131/131A master, simplifying 16-bit bus expansion |
| Per-port power-down control | Reduces system power by disabling unused port circuitry while maintaining active port functionality |
| Fixed-address interrupt flags | Supports deterministic port-to-port handshaking using dedicated addresses (3FFH left, 3FEH right), avoiding software polling |
| Industrial temperature range | Validated operation from –40°C to +85°C ensures reliability in factory automation, motor drives, and telecom infrastructure |
Applications
| DSP Cache Buffer | Multi-Processor Shared Memory |
|---|---|
|
Use Scenario: Real-time digital signal processing in audio codecs or radar front-ends requiring low-latency access to shared coefficient tables. IC Role / Device Role / Timing Role: Slave dual-port SRAM providing synchronized 8-bit data path to two independent processing units with 25 ns access guarantee. Use Value: Enables zero-wait-state data exchange between DSP core and auxiliary controller without bus contention or external arbitration ICs. |
Use Scenario: Inter-processor communication in redundant PLC modules where two CPUs must share status registers and I/O mapping tables. IC Role / Device Role / Timing Role: Shared memory node with BUSY-input arbitration ensuring deterministic resolution of simultaneous read/write attempts. Use Value: Guarantees atomic updates via INT flag handshake, eliminating race conditions in safety-critical industrial control loops. |
| Bit-Slice System Expansion | Legacy Bus Interface Bridge |
|
Use Scenario: Extending 16-bit ALU width in vintage minicomputer emulators or FPGA-based retro-computing platforms. IC Role / Device Role / Timing Role: Slave device cascaded with CY7C131 master to construct 16-bit-wide memory space using two parallel 8-bit ports. Use Value: Maintains full 25 ns throughput across expanded bus width without timing skew or glue logic penalties. |
Use Scenario: Adapting legacy 8-bit microcontrollers to interface with modern peripherals requiring dual-access buffering. IC Role / Device Role / Timing Role: Asynchronous bridge memory holding command/response packets between slow host MCU and fast peripheral FIFO. Use Value: Decouples timing domains using independent port clocks, allowing mismatched read/write rates without data loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C141-25ZXC | Pb-free 52-pin TQFP package instead of PLCC; identical electrical specs and pinout mapping | Suitable for fine-pitch SMT lines with reflow-compatible footprint; lower profile than PLCC | Select when board space constraints or automated optical inspection favor TQFP over PLCC |
| IDT70V25L25PF | 1K × 8, 25 ns, but features built-in busy arbitration logic and single 3.3 V supply | Self-contained dual-port operation without master/slave pairing; incompatible voltage domain | Choose only if migrating to 3.3 V systems and eliminating master device complexity is prioritized over Cypress ecosystem continuity |
Compared with CY7C141-25ZXC, the JXC variant offers proven PLCC reliability in vibration-prone industrial environments; versus IDT70V25L25PF, it retains 5 V compatibility and seamless integration with existing CY7C131-based designs but requires external master arbitration.
Availability
CY7C141-25JXC is available at Aetrix Electronics and suitable for industrial control systems, DSP accelerator modules, and legacy bus interface bridges requiring stable component supply, long-lifecycle support, and verified PLCC packaging.
Supply support for CY7C141-25JXC 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) designs high-reliability memory and programmable solutions for industrial, automotive, and communications markets.
CY7C141 belongs to Cypress's legacy dual-port SRAM product line, engineered specifically for deterministic shared-memory architectures in multi-processor and real-time signal processing systems.
FAQ
Is CY7C141-25JXC pin-compatible with CY7C140-25JXC?
No. While both are 52-pin PLCC dual-port SRAMs, CY7C140 is specified for commercial temperature range (0°C to +70°C) and lacks industrial qualification. CY7C141-25JXC supports –40°C to +85°C operation and has validated ISB1 standby current of 45 mA under industrial conditions - a critical distinction for ruggedized applications.
Can CY7C141-25JXC operate as a standalone dual-port memory without a master device?
Yes, but with limitations: BUSY must be held inactive (high via pull-up) since it is an input-only signal, and INT flag usage requires external handling of 3FFH/3FEH addresses. Full arbitration and priority resolution require pairing with CY7C131/131A master; standalone use forfeits collision detection and automatic port prioritization.
What is the maximum clock frequency supported for continuous read cycles?
There is no internal clock; operation is fully asynchronous. Maximum sustained read rate is determined by tRC = 25 ns, yielding up to 40 MHz effective throughput per port. Address and control setup/hold times (e.g., tSA = 0 ns, tHA = 2 ns) allow tight timing margins in high-speed logic designs without added wait states.
Does CY7C141-25JXC support hot insertion or live swapping?
No. The device lacks hot-swap protection circuitry such as power-on reset, I/O clamp diodes, or slew-rate controlled outputs. Applying VCC or signals before proper power sequencing risks latch-up or excessive I/O leakage, as confirmed by Absolute Maximum Ratings specifying strict voltage ramp limits and –0.5 V to +7.0 V non-operational input tolerance.
CY7C141-25JXC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-PLCC (19.13x19.13)
CY7C141-25JXC FAQ
1.How can I place an order for CY7C141-25JXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C141-25JXC 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 CY7C141-25JXC reliable?
The price and inventory of CY7C141-25JXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C141-25JXC is usually 5 days.
3.What payment methods are accepted for CY7C141-25JXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C141-25JXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C141-25JXC?
CY7C141-25JXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C141-25JXC 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 CY7C141-25JXC?
For technical support, including CY7C141-25JXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C141-25JXC requirements.
6.How does Aetrix verify that CY7C141-25JXC is sourced from the original manufacturer or authorized distributors?
All CY7C141-25JXC 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 CY7C141-25JXC meets industry standards.
7.What is the process for return or replacement of CY7C141-25JXC?
All CY7C141-25JXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C141-25JXC, 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 CY7C141-25JXC part is unused and in its original packaging.
Return procedure for CY7C141-25JXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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