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Infineon Technologies CY7C0241-15AXC
- Part No.:
- CY7C0241-15AXC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
CY7C0241-15AXC.pdf
- Description:
- IC SRAM 72KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,810
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Product details
Overview
CY7C0241-15AXC from Cypress Semiconductor is a 4K × 18-bit true dual-port static RAM with independent left/right ports, 15 ns access time, on-chip semaphore logic, and BUSY/INT flags for interprocessor communication-used in multiprocessor status buffering and video memory arbitration.
For engineers reviewing the CY7C0241-15AXC datasheet, CY7C0241-15AXC pinout, CY7C0241-15AXC application, or CY7C0241-15AXC equivalent, key selection criteria include asynchronous dual-port timing, master/slave expandability to 36-bit bus width, semaphore-controlled resource sharing, and 84-pin PLCC packaging compatibility with legacy industrial control systems.
Technical Context
The CY7C0241-15AXC implements fully asynchronous dual-port architecture with separate CE/R/W/OE controls per port, enabling concurrent read/write operations-even to the same address-with deterministic BUSY arbitration and tBLA/tBLC timing resolution. It supports both master (BUSY output) and slave (BUSY input) modes via the M/S pin for seamless 36-bit memory expansion without external logic.
Its eight dedicated semaphore latches operate independently of main memory, using SEM-select addressing (A0–A2) and I/O0-only write control; semaphore ownership is exclusive and atomic, with automatic cross-port state mirroring (e.g., write 0 on left → 1 appears on right), enabling robust software handshaking in real-time interprocessor messaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 18 bits (72 Kbit total), supporting independent 18-bit data paths per port |
| Access Time | 15 ns max - guarantees deterministic latency for real-time processor coherency |
| Supply Voltage | 5 V ±10% - compatible with standard TTL/CMOS logic rails in industrial embedded systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade reliability without derating |
| Power Consumption | ICC = 190 mA typical - enables low-heat operation in dense PCB layouts |
| Arbitration Logic | On-chip BUSY flag with tBLA = 5 ns setup - resolves simultaneous access without external glue logic |
| Semaphore Count | 8 dedicated latches - provides hardware-enforced mutual exclusion for up to eight shared resources |
Pinout & Package
Package: 84-pin Plastic Leaded Chip Carrier (PLCC), Pb-free, RoHS-compliant, with 0.050" lead pitch and body size 1.170" × 1.170".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left/Right) | Independent port activation; deassertion triggers automatic power-down per port |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-HIGH write enable; defines direction without OE dependency |
| OEL / OER | Output Enable (Left/Right) | Controls tri-state output drivers; allows partial bus sharing during reads |
| SEML / SEMR | Semaphore Enable (Left/Right) | Selects semaphore latch space instead of main memory when asserted low |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Output in master mode, input in slave mode; signals arbitration conflict resolution |
| INTL / INTR | Interrupt Flag (Left/Right) | Open-drain output asserting on mailbox write (address FFE/FFF); resets on read |
| M/S | Master/Slave Select | Configures BUSY pin direction; enables daisy-chain expansion without discrete logic |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables byte-level writes to I/O8–I/O17 (upper) or I/O0–I/O7 (lower) independently |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Memory Cells | Simultaneous read/write to identical addresses with guaranteed BUSY arbitration-not time-multiplexed or pseudo-dual |
| Hardware Semaphore Logic | Eight atomic, cross-port mirrored latches accessible via SEM + A0–A2-eliminates software polling loops for resource locking |
| Expandable Data Bus | Master/slave configuration via M/S pin supports 36-bit bus width using multiple devices-no external decoder or bus transceivers required |
| Asynchronous Port Independence | No clock required; each port operates with its own CE/R/W/OE timing-enables heterogeneous processor interfacing (e.g., ARM + DSP) |
| Mailbox-Based Interrupts | Dedicated upper two memory locations (FFE/FFF) act as interrupt-triggering mailboxes-enables zero-latency interprocessor signaling |
Applications
| Industrial PLC Communication Buffer | Real-Time Video Frame Buffer |
|---|---|
Use Scenario: Two independent PLC CPUs share status registers and I/O mapping tables via shared memory. IC Role / Device Role / Timing Role: Dual-port SRAM acts as coherent inter-CPU message buffer with semaphore-controlled write access and BUSY-flag collision detection. Use Value: Eliminates external arbitration logic and reduces inter-CPU handshake latency to ≤15 ns, improving scan cycle consistency in motion control systems. | Use Scenario: Graphics controller and display processor concurrently access frame buffer memory for rendering and scan-out. IC Role / Device Role / Timing Role: Provides simultaneous 18-bit pixel data read (display side) and write (GPU side) with no pipeline stalls. Use Value: Enables flicker-free 60 Hz video output by guaranteeing deterministic 15 ns access to overlapping pixel regions during active scan lines. |
| Multiprocessor Telecommunications Node | Avionics Sensor Fusion Module |
Use Scenario: Baseband and protocol processors exchange packet headers and metadata in LTE base station front-end. IC Role / Device Role / Timing Role: Acts as low-latency descriptor ring buffer with INT-driven mailbox interrupts for packet arrival notification. Use Value: Reduces packet processing jitter by replacing software-polling with hardware-interrupt delivery, meeting 3GPP sub-100 µs latency targets. | Use Scenario: Flight computer and sensor acquisition unit share calibrated IMU/ADC data in safety-critical navigation stack. IC Role / Device Role / Timing Role: Serves as fault-tolerant shared memory with semaphore-protected critical variables and BUSY-monitored write coherency. Use Value: Ensures deterministic memory access under DO-254 design assurance level B by eliminating race conditions in sensor data handoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT70V25L15PF | 4K × 16 organization, 15 ns access, 100-pin TQFP only - lacks 18-bit width and PLCC option | Requires external byte-enable logic for 18-bit data alignment; no native upper-byte support | Select if 16-bit bus interface suffices and TQFP footprint is preferred over PLCC |
| IS61LV25616AL-15TQLI | 256K × 16, 15 ns, 100-pin TQFP - larger density but single-port only; requires external dual-port controller | No built-in arbitration, semaphores, or BUSY/INT flags - adds FPGA or CPLD overhead | Choose only when memory depth dominates over interprocessor coordination features |
Compared with IDT70V25L15PF and IS61LV25616AL-15TQLI, the CY7C0241-15AXC uniquely delivers 4K × 18-bit true dual-port operation in 84-pin PLCC with integrated semaphores and master/slave expansion-reducing BOM count and PCB area while preserving deterministic real-time behavior.
Availability
CY7C0241-15AXC is available at Aetrix Electronics and suitable for industrial PLC communication buffers, real-time video frame buffers, and avionics sensor fusion modules requiring stable component supply across extended product lifecycles.
Supply support for CY7C0241-15AXC 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 infrastructure.
The CY7C0241 belongs to Cypress's legacy dual-port SRAM product line, engineered specifically for deterministic interprocessor communication in hard real-time embedded systems where hardware arbitration and semaphore coherency are mandatory.
FAQ
What is the function of the M/S pin on CY7C0241-15AXC?
The M/S (Master/Slave) pin configures the device's BUSY pin behavior: when HIGH, BUSY pins act as outputs for master-mode arbitration signaling; when LOW, they become inputs for slave-mode daisy-chaining. This enables 36-bit memory expansion using multiple CY7C0241 devices without external logic, directly supporting wide-data-path industrial controllers.
How do the semaphore latches operate in CY7C0241-15AXC?
The eight semaphore latches are accessed via SEM pin assertion and A0–A2 address lines; writing '0' to a latch grants exclusive ownership to that port, while '1' releases it. Ownership is mirrored cross-port (e.g., left writes 0 → right reads 1), ensuring atomic resource allocation without software race conditions-critical for real-time OS task synchronization.
Can CY7C0241-15AXC be used in a single-processor system?
Yes-its dual-port architecture supports asymmetric use cases: one port can interface with a microcontroller while the other connects to an FPGA or DMA engine for background data movement. The INT and BUSY flags remain functional for internal event signaling, and semaphores provide hardware-managed buffer management even without a second CPU.
What is the significance of the FFE/FFF memory addresses in CY7C0241-15AXC?
Addresses FFEh (left port) and FFFh (right port) serve as dedicated mailbox locations: writing to the opposite port's mailbox automatically asserts its INT flag, enabling hardware-triggered interprocessor interrupts. Reading the mailbox clears the interrupt-providing a zero-overhead, deterministic signaling mechanism essential for hard real-time coordination.
CY7C0241-15AXC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 72Kbit
- Memory Organization:
- 4K x 18
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 15ns
- Access Time:
- 15 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
CY7C0241-15AXC FAQ
1.How can I place an order for CY7C0241-15AXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C0241-15AXC 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 CY7C0241-15AXC reliable?
The price and inventory of CY7C0241-15AXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C0241-15AXC is usually 5 days.
3.What payment methods are accepted for CY7C0241-15AXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C0241-15AXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C0241-15AXC?
CY7C0241-15AXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C0241-15AXC 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 CY7C0241-15AXC?
For technical support, including CY7C0241-15AXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C0241-15AXC requirements.
6.How does Aetrix verify that CY7C0241-15AXC is sourced from the original manufacturer or authorized distributors?
All CY7C0241-15AXC 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 CY7C0241-15AXC meets industry standards.
7.What is the process for return or replacement of CY7C0241-15AXC?
All CY7C0241-15AXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C0241-15AXC, 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 CY7C0241-15AXC part is unused and in its original packaging.
Return procedure for CY7C0241-15AXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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