My Inquiry
My Account
Infineon Technologies CY7C141-25JXCT
- Part No.:
- CY7C141-25JXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 52-LCC (J-Lead)
- Datasheet:
-
CY7C141-25JXCT.pdf
- Description:
- IC SRAM 8KBIT PARALLEL 52PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,863
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY7C141-25JXCT from Cypress Semiconductor is a 1K × 8 dual-port static RAM with true independent left/right port access, 25 ns maximum access time, 5 V ±10% supply, and 52-pin PLCC package. It functions as a slave device in 16-bit+ bus expansion systems paired with CY7C131/CY7C131A masters, enabling shared memory for multi-processor DSP cache and bit-slice architectures.
For engineers reviewing the CY7C141-25JXCT datasheet, CY7C141-25JXCT pinout, CY7C141-25JXCT application, or CY7C141-25JXCT equivalent, key selection criteria include BUSY input capability, INT flag support for port-to-port signaling, asynchronous dual-port timing, and industrial temperature range (–40°C to +85°C) operation.
Technical Context
This device implements fully asynchronous dual-port SRAM architecture with separate address, data, and control buses per port. Each port features independent CE, R/W, and OE pins, plus dedicated BUSY (input) and INT (output) flags for arbitration and inter-port communication.
The CY7C141 operates exclusively as a slave unit: its BUSY pin accepts arbitration signals from master devices (e.g., CY7C131), while its INT output signals interrupt events triggered by writes to reserved addresses (3FEH for right port). Power-down is controlled per port via CE assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1K × 8 (1024 words × 8 bits), providing 8 KB total storage with dual-port read/write independence |
| Access Time | 25 ns max - defines minimum cycle time for reliable read operations under industrial conditions |
| Supply Voltage | 5 V ±10% - requires stable 4.5–5.5 V rail; not compatible with 3.3 V or mixed-voltage systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems without derating |
| Standby Current | 45 mA max (both ports disabled) - enables low-power hold mode during system idle periods |
| Bus Interface | Asynchronous, non-multiplexed - eliminates clock domain synchronization overhead between ports |
| Arbitration Logic | BUSY input only - relies on external master (e.g., CY7C131) to resolve contention; no internal priority resolution |
Pinout & Package
Package: 52-pin Plastic Leaded Chip Carrier (PLCC), JEDEC MS-026AC compliant, lead-free (Pb-free) variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left/Right) | Active-low enable per port; controls power-down state and output Z-mode independently |
| R/WL / R/WR | Read/Write Control (Left/Right) | Low = write, high = read; determines data direction on I/O bus for respective port |
| OEL / OER | Output Enable (Left/Right) | Active-low; enables tristate output drivers - required to avoid bus contention when sharing data lines |
| A0L–A9L / A0R–A9R | Address Inputs (Left/Right) | 10-bit address bus per port; selects one of 1024 memory locations independently |
| I/O0L–I/O7L / I/O0R–I/O7R | Data Bus (Left/Right) | 8-bit bidirectional data path per port; supports simultaneous read/write across ports |
| BUSY | Arbitration Input | Open-drain input requiring external pull-up; signals active contention from master device |
| INTL / INTR | Interrupt Flag Output | Active-high open-drain outputs; indicate write to dedicated interrupt address (3FFH/3FEH) |
| VCC / GND | Power Supply | Single 5 V supply with dedicated ground plane; decoupling capacitors required at each VCC pin |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables concurrent, independent access to same or different memory locations - critical for real-time inter-processor data exchange |
| Slave-Only BUSY Interface | Accepts external BUSY signal from master (e.g., CY7C131); eliminates need for internal arbitration logic and reduces latency overhead |
| Dedicated INT Flag Generation | Automatically asserts INTL/INTR on write to fixed addresses (3FFH/3FEH), enabling hardware-triggered inter-port notifications without polling |
| Per-Port Power Management | Individual CE control allows selective port shutdown - reduces dynamic current by up to 65% when one port is idle |
| Industrial Temperature Support | Guaranteed 25 ns access time across –40°C to +85°C ambient - suitable for ruggedized control and instrumentation systems |
Applications
| DSP Cache Memory | Multi-Processor Shared Buffer |
|---|---|
|
Use Scenario: Real-time digital signal processing where two processors (e.g., host CPU and DSP core) require low-latency access to common coefficient or sample buffers. IC Role / Device Role / Timing Role: Slave dual-port RAM providing synchronized, contention-managed data exchange without software arbitration overhead. Use Value: Eliminates bus turnaround delays and lock-step synchronization, enabling deterministic 25 ns read/write cycles for time-critical filtering or FFT operations. |
Use Scenario: Industrial PLC backplane with separate control and monitoring CPUs sharing status registers and I/O image tables. IC Role / Device Role / Timing Role: Shared memory node with BUSY-driven arbitration ensuring atomic updates to critical process variables. Use Value: Prevents race conditions during concurrent read-modify-write sequences, maintaining data integrity without firmware-level semaphores. |
| Bit-Slice Processor Interconnect | Legacy System Bus Expansion |
|
Use Scenario: Modular bit-slice architecture (e.g., AMD 2900 family) where multiple ALUs share operand and result memory. IC Role / Device Role / Timing Role: Slave memory block extending native word width beyond 8 bits using CY7C131 master coordination. Use Value: Enables 16-bit or wider data paths without custom glue logic - reduces PCB layer count and timing closure complexity. |
Use Scenario: Retrofitting legacy 8-bit microcontroller systems with additional memory-mapped peripherals or firmware overlays. IC Role / Device Role / Timing Role: Asynchronous dual-port interface bridging slow legacy bus to faster co-processor or DMA engine. Use Value: Provides zero-wait-state memory access for burst transfers while maintaining compatibility with existing 8-bit address/data multiplexing schemes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C141-25JXC | Same die, non-Pb-free PLCC package - lacks RoHS-compliant finish and may not meet modern environmental compliance requirements | Identical functionality and timing; restricted to legacy or non-regulated markets | Select only if Pb-free certification is not required and cost sensitivity outweighs regulatory risk |
| IDT71V256SA25YG | 3.3 V, 256K × 16 sync dual-port SRAM - incompatible voltage, larger density, synchronous interface, no BUSY/INT arbitration signals | Requires level-shifting, clock domain management, and software arbitration - unsuitable as drop-in replacement | Consider only for greenfield 3.3 V designs needing higher density and accepting added design complexity |
Compared with CY7C141-25JXC, the JXCT variant adds Pb-free compliance without performance trade-offs; versus IDT71V256SA25YG, it retains 5 V compatibility, asynchronous operation, and hardware arbitration - preserving legacy system integrity and reducing firmware overhead.
Availability
CY7C141-25JXCT is available at Aetrix Electronics and suitable for industrial control systems, DSP-based instrumentation, multi-processor communications infrastructure, and legacy system upgrades requiring stable component supply and long-term lifecycle support.
Supply support for CY7C141-25JXCT 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 applications.
CY7C141 belongs to Cypress's legacy dual-port SRAM product line, engineered specifically for deterministic, contention-aware shared memory in multi-processor and real-time embedded systems.
FAQ
Is CY7C141-25JXCT pin-compatible with CY7C140-25JXCT?
No. CY7C141-25JXCT uses a 52-pin PLCC package, while CY7C140-25JXCT is specified in a 48-pin DIP package. The pin counts, physical dimensions, and land patterns are incompatible. Migration requires PCB redesign and layout revision.
Can CY7C141-25JXCT operate as a standalone dual-port RAM without a master device?
No. CY7C141 is designed exclusively as a slave device: its BUSY pin is an input only, and it lacks internal arbitration logic. It must be paired with a master dual-port RAM (e.g., CY7C131) to manage port contention and generate BUSY signals.
What is the function of the INTL and INTR pins, and how are they triggered?
INTL and INTR are open-drain interrupt outputs that assert high when a write occurs to dedicated addresses: 3FFH (left port) and 3FEH (right port). These pins enable hardware-level inter-port signaling without polling, supporting event-driven synchronization in real-time systems.
Does CY7C141-25JXCT support 3.3 V operation?
No. The device is specified only for 5 V ±10% (4.5–5.5 V) operation. Applying 3.3 V violates the absolute maximum rating and will result in undefined behavior, failed reads/writes, or permanent damage due to insufficient gate overdrive in the 0.65 µm CMOS process.
CY7C141-25JXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 52-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- 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)
CY7C141-25JXCT FAQ
1.How can I place an order for CY7C141-25JXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C141-25JXCT 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 CY7C141-25JXCT reliable?
The price and inventory of CY7C141-25JXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C141-25JXCT is usually 5 days.
3.What payment methods are accepted for CY7C141-25JXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C141-25JXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C141-25JXCT?
CY7C141-25JXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C141-25JXCT 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 CY7C141-25JXCT?
For technical support, including CY7C141-25JXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C141-25JXCT requirements.
6.How does Aetrix verify that CY7C141-25JXCT is sourced from the original manufacturer or authorized distributors?
All CY7C141-25JXCT 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 CY7C141-25JXCT meets industry standards.
7.What is the process for return or replacement of CY7C141-25JXCT?
All CY7C141-25JXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C141-25JXCT, 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 CY7C141-25JXCT part is unused and in its original packaging.
Return procedure for CY7C141-25JXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C141-25JXCT Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
