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Infineon Technologies CY7C024-15AC
- Part No.:
- CY7C024-15AC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
CY7C024-15AC.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,546
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Product details
Overview
CY7C024-15AC from Cypress Semiconductor is a 4K × 16-bit true dual-port static RAM with independent left/right ports, 15 ns access time, on-chip arbitration logic, and integrated semaphore latches for interprocessor resource sharing in real-time embedded systems.
For engineers reviewing the CY7C024-15AC datasheet, CY7C024-15AC pinout, CY7C024-15AC application, or CY7C024-15AC equivalent, key selection criteria include simultaneous asynchronous port access timing, BUSY/INT flag behavior under contention, M/S pin configuration for master/slave expansion, and PLCC-84 package compatibility with legacy board layouts.
Technical Context
The CY7C024-15AC implements fully asynchronous dual-port operation with separate CE/R/W/OE controls per port, enabling deterministic read/write to any memory location without external synchronization. Its on-chip arbitration resolves address-contention events within tPS (≤5 ns), asserting BUSY outputs to signal pending access resolution.
Semaphore logic comprises eight dedicated latches accessible via SEM pin activation, where write-to-zero grants exclusive control of shared resources; INT flags support mailbox-based interport messaging using upper two memory addresses (FFEh/FFFh), with interrupt reset on mailbox read.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 16-bit (65,536 bits total), supporting independent 16-bit data transfers on each port |
| Access Time | 15 ns maximum - guarantees deterministic data availability after CE or OE assertion in high-speed multiprocessor interfaces |
| Supply Voltage | 5.0 V ±10% - compatible with standard TTL/CMOS logic rails and industrial power supplies |
| Operating Temperature | 0°C to +70°C (Commercial grade) - validated for use in non-extended ambient environments |
| Power Consumption | ICC = 150 mA typical active current; ISB1 = 50 mA typical standby - enables low-power operation during idle port cycles |
| Arbitration Response | tBLA = 5 ns BUSY assertion delay after address match - defines minimum inter-port latency during contention |
| Semaphore Count | 8 dedicated latches - provides hardware-enforced mutual exclusion for up to eight shared system resources |
Pinout & Package
Package: 84-pin Plastic Leaded Chip Carrier (PLCC), lead-free compliant, body size 29.31 mm × 29.31 mm, 1.78 mm height, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left/Right) | Independent port activation; deassertion places port in automatic power-down mode |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-low transition initiates write; high level enables read (with OE asserted) |
| OEL / OER | Output Enable (Left/Right) | Enables bidirectional I/O drivers only when CE is active; controls output tristate independently |
| SEML / SEMR | Semaphore Enable (Left/Right) | Activates semaphore latch access instead of memory array; requires CE HIGH during SEM LOW |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Output in master mode; input in slave mode - signals arbitration outcome or pending conflict resolution |
| INTL / INTR | Interrupt Flag (Left/Right) | Open-drain output asserted when opposite port writes to mailbox address (FFEh/FFFh) |
| M/S | Master/Slave Select | High = master (BUSY pins output); Low = slave (BUSY pins input) - enables 32-bit+ bus expansion without external logic |
| A0L–A11L / A0R–A11R | Address Inputs (Left/Right) | 12-bit addressing for 4K-word space; no A12 pin present on CY7C024 variants |
| I/O0L–I/O15L / I/O0R–I/O15R | Data Bus (Left/Right) | 16-bit bidirectional data path per port; UB/LB pins enable byte-select writes |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables concurrent, fully asynchronous reads/writes to same memory location without external arbitration circuitry |
| Hardware Semaphore Logic | Eight dedicated latches with atomic acquire/release semantics eliminate software race conditions in shared-resource allocation |
| Inter-Port Mailbox Interrupts | Two dedicated upper-address mailboxes (FFEh/FFFh) provide zero-latency notification of cross-port data arrival |
| Master/Slave Expansion Support | M/S pin configures device as master (driving BUSY) or slave (receiving BUSY), enabling 32-bit+ data paths with no glue logic |
| Automatic Power-Down | Per-port CE-controlled sleep mode reduces ICC to 50 mA typical, critical for thermally constrained embedded designs |
Applications
| Industrial PLC Communication Buffer | Dual-Processor Real-Time Control System |
|---|---|
Use Scenario: Two independent PLC CPUs exchange status and command data through shared memory without bus locking or polling overhead. IC Role / Device Role / Timing Role: Dual-port SRAM acts as deterministic, low-latency message buffer with hardware semaphore coordination between ladder logic and motion control processors. Use Value: Eliminates 10–15 µs software handshake delays per transaction, enabling sub-millisecond inter-CPU synchronization in safety-critical motion sequences. | Use Scenario: A primary controller and safety monitor processor share sensor fusion results and actuator commands in automotive ADAS domain controllers. IC Role / Device Role / Timing Role: CY7C024-15AC serves as fault-tolerant shared memory with BUSY-flagged contention resolution and mailbox-triggered fail-safe interrupts. Use Value: Guarantees ≤15 ns memory access determinism and hardware-enforced resource isolation, meeting ISO 26262 ASIL-B timing constraints. |
| Legacy Video Frame Buffer Interface | Telecom Line Card Status Exchange |
Use Scenario: Legacy graphics controller and display processor access frame buffer memory concurrently during raster scan and GUI update cycles. IC Role / Device Role / Timing Role: Acts as pixel-data coherency bridge with separate upper/lower byte enables (UB/LB) for partial writes during active video periods. Use Value: Prevents visual tearing by enabling atomic 16-bit pixel updates while display engine reads at full 60 Hz refresh rate. | Use Scenario: Two DSPs on a telecom line card exchange channel state, error counters, and alarm flags across TDM and packet-processing domains. IC Role / Device Role / Timing Role: Provides non-blocking status register bank with semaphore-protected access to prevent corruption during bursty signaling traffic. Use Value: Reduces inter-DSP communication jitter from >2 µs (software mutex) to <5 ns (hardware semaphore), improving call setup latency consistency. |
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-bit, 15 ns, 3.3 V core; lacks M/S pin and integrated semaphores | Requires external arbitration logic and voltage translation for 5 V systems | Select when migrating to lower-voltage platforms and adding discrete arbitration |
| CY7C028-15AC | 8K × 16-bit, same 84-pin PLCC package and pinout; adds A12 address line | Direct drop-in upgrade path for memory capacity expansion without PCB redesign | Select when application requires >4K words and existing layout supports A12 routing |
Compared with IDT70V25L15PF and CY7C028-15AC, the CY7C024-15AC uniquely integrates M/S expansion control and eight hardware semaphores in a 5 V, 15 ns 4K×16 configuration-making it optimal for cost-sensitive, pin-constrained legacy multiprocessor designs requiring zero-software-coordination resource sharing.
Availability
CY7C024-15AC is available at Aetrix Electronics and suitable for industrial PLC communication buffers, dual-processor real-time control systems, and legacy video frame buffer interfaces requiring stable component supply across extended production lifecycles.
Supply support for CY7C024-15AC 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 programmable system-on-chip, memory, and USB solutions for industrial, automotive, and consumer markets.
The CY7C024 series belongs to Cypress's legacy dual-port SRAM product line, designed specifically for deterministic interprocessor communication in real-time embedded systems where hardware-managed concurrency is required.
FAQ
What is the function of the M/S pin on CY7C024-15AC?
The M/S pin configures the device as master (M/S = HIGH) or slave (M/S = LOW). In master mode, BUSY pins drive outputs to signal arbitration outcomes; in slave mode, BUSY pins accept inputs from a master device. This enables seamless 32-bit+ data bus expansion using multiple CY7C024-15AC units without external logic.
How do the semaphore latches operate in CY7C024-15AC?
The eight semaphore latches are accessed by asserting SEM LOW while keeping CE HIGH. Writing '0' to a semaphore grants exclusive control to that port; writing '1' releases it. The latch state appears mirrored on both ports, and only the controlling port can modify its value-enabling atomic resource reservation without software intervention.
Can CY7C024-15AC be used in a single-port configuration?
Yes-either port can be disabled by holding its CE pin HIGH, allowing the device to function as a standard 4K×16 SRAM with full 16-bit I/O. All control signals (R/W, OE, UB, LB) remain functional on the active port, and BUSY/INT/SEM retain their defined behaviors relative to the enabled port only.
What is the timing relationship between BUSY assertion and address matching?
BUSY is asserted tBLA = 5 ns after an address match occurs between ports, or tBLC = 5 ns after CE is taken LOW during contention. This fixed delay ensures predictable arbitration response and allows downstream logic to synchronize with BUSY-driven wait-state insertion without timing margin uncertainty.
CY7C024-15AC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Bag
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 64Kbit
- Memory Organization:
- 4K x 16
- 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)
CY7C024-15AC FAQ
1.How can I place an order for CY7C024-15AC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C024-15AC 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 CY7C024-15AC reliable?
The price and inventory of CY7C024-15AC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C024-15AC is usually 5 days.
3.What payment methods are accepted for CY7C024-15AC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C024-15AC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C024-15AC?
CY7C024-15AC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C024-15AC 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 CY7C024-15AC?
For technical support, including CY7C024-15AC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C024-15AC requirements.
6.How does Aetrix verify that CY7C024-15AC is sourced from the original manufacturer or authorized distributors?
All CY7C024-15AC 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 CY7C024-15AC meets industry standards.
7.What is the process for return or replacement of CY7C024-15AC?
All CY7C024-15AC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C024-15AC, 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 CY7C024-15AC part is unused and in its original packaging.
Return procedure for CY7C024-15AC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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