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Infineon Technologies CY7C006A-20AC
- Part No.:
- CY7C006A-20AC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 64-LQFP
- Datasheet:
-
CY7C006A-20AC.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,822
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Product details
Overview
CY7C006A-20AC from Cypress Semiconductor is a 16K × 8 true dual-port static RAM with independent left/right address, data, and control buses, 20 ns access time, 180 mA typical active current, and on-chip arbitration logic for simultaneous memory access resolution-used in interprocessor communication buffers and video frame stores.
For engineers reviewing the CY7C006A-20AC datasheet, CY7C006A-20AC pinout, CY7C006A-20AC application, or CY7C006A-20AC equivalent, key selection considerations include BUSY/INT/SEM signal timing, master/slave expansion capability, asynchronous port independence, and CMOS-level standby current (0.05 mA).
Technical Context
The CY7C006A-20AC implements fully asynchronous dual-port operation with separate CE/OE/R/W controls per port and hardware-based arbitration using BUSY flag assertion within tBLA/tBLC timing windows. It supports non-contention read/write cycles and deterministic flowthrough delay (tDDD) during cross-port data transfer.
On-chip semaphores consist of eight dedicated latches accessible via SEM pin with A0–A2 addressing; each latch enforces mutual exclusion by allowing only one port to write zero to claim ownership. Interrupts use fixed mailbox addresses (0x3FFE for left port, 0x3FFF for right port), triggered on write and cleared on read.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 16K × 8 bits (131,072 total bits), two independent 16-bit address spaces (A0L–A13L / A0R–A13R) |
| Access Time | 20 ns maximum - defines minimum clock-to-data setup window for synchronous interface integration |
| Active Current | 180 mA typical at VCC = 5 V - determines power rail sizing and thermal budget in multi-port systems |
| Standby Current | 0.05 mA typical (ISB3, both ports CMOS-level disabled) - enables low-power hold mode during processor idle |
| Arbitration Logic | Hardware BUSY signaling with tPS contention window - eliminates need for external arbitration logic in multiprocessor designs |
| Semaphore Count | 8 dedicated latches - provides atomic resource locking without software polling overhead or external mutex ICs |
| Interrupt Mailbox | Fixed addresses 0x3FFE (left) and 0x3FFF (right) - enables zero-latency inter-processor messaging with automatic flag generation |
Pinout & Package
Available in 68-pin PLCC and 64-pin TQFP packages; CY7C006A-20AC specifically uses the 68-pin PLCC package with 0.05-inch lead pitch and body size 1.100″ × 1.100″.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Independent port activation; drives automatic power-down when deasserted |
| OEL / OER | Output Enable (Left / Right) | Controls tri-state output drivers; allows shared data bus usage without contention |
| R/WL / R/WR | Read/Write Control (Left / Right) | Directional control for I/O pins; high = read, low = write per port |
| BUSYL / BUSYR | Busy Flag (Left / Right) | Output in master mode, input in slave mode; signals arbitration conflict on same-address access |
| SEML / SEMR | Semaphore Enable (Left / Right) | Chip-select for semaphore latches; must be asserted with OE to access A0–A2 semaphore space |
| INTL / INTR | Interrupt Flag (Left / Right) | Open-drain output asserting on mailbox write; cleared only by owner reading its mailbox |
| M/S | Master/Slave Select | High = master (BUSY outputs), low = slave (BUSY inputs); enables 16-bit+ word-width expansion |
| A0L–A13L / A0R–A13R | Address Inputs (Left / Right) | 14-bit independent addressing per port; no shared address lines between ports |
| I/O0L–I/O7L / I/O0R–I/O7R | Data Bus (Left / Right) | 8-bit bidirectional data paths; electrically isolated between ports |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Simultaneous, independent read/write to identical memory locations without external arbitration logic |
| Hardware Semaphore Latches | Eight dedicated, atomic-access latches eliminate software race conditions in resource sharing |
| Configurable Master/Slave Mode | M/S pin enables seamless 16-bit+ memory expansion using multiple CY7C006A devices without glue logic |
| Deterministic Interrupt Mailbox | Fixed high-address mailboxes (0x3FFE/0x3FFF) provide guaranteed-latency inter-processor signaling |
| Low-Power CMOS Process | 0.35-μm technology delivers 20 ns speed with only 0.05 mA standby current at CMOS-level disable |
Applications
| Interprocessor Communication Buffer | Video Frame Memory |
|---|---|
|
Use Scenario: Two microcontrollers exchange status and command data through shared memory without bus contention. IC Role / Device Role / Timing Role: Dual-port SRAM acts as synchronized message buffer with BUSY-controlled arbitration and INT-driven notification. Use Value: Eliminates need for UART/FIFO bridging hardware and reduces inter-processor latency to sub-20 ns memory access. |
Use Scenario: Graphics controller writes pixel data while display engine reads concurrently for real-time rendering. IC Role / Device Role / Timing Role: Acts as double-buffered frame store with independent left (write) and right (read) ports. Use Value: Enables flicker-free display updates by decoupling write/read timing; supports 60 Hz refresh with 20 ns pixel access. |
| Communications Protocol Stack Buffer | Multiprocessor Real-Time Control System |
|
Use Scenario: Modem baseband processor and host CPU share packet headers and payload metadata in LTE/Wi-Fi stacks. IC Role / Device Role / Timing Role: Provides low-latency, lock-free data exchange using semaphore-controlled resource allocation. Use Value: Reduces protocol stack processing jitter by avoiding software mutex delays; supports 100 Mbps+ throughput. |
Use Scenario: Motor control MCU and safety monitor MCU coordinate motion profiles and fault states in industrial drives. IC Role / Device Role / Timing Role: Serves as deterministic shared state register bank with interrupt-triggered event signaling. Use Value: Guarantees sub-microsecond response to critical faults via hardware mailbox interrupts, meeting SIL-2 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT70V25L20PF | 16K × 16 organization, 20 ns access, 3.3 V supply only | Requires level-shifting for 5 V systems; wider data bus reduces chip count but increases layout complexity | Select when 16-bit data path is required and system operates at 3.3 V |
| IS61LV25616AL-10TLI | Asynchronous single-port SRAM with external arbitration logic needed; 10 ns faster but no built-in BUSY/SEM/INT | Lacks hardware semaphores and interrupts - demands additional FPGA or discrete logic for multiprocessor coordination | Select only for cost-sensitive, single-processor systems where arbitration is handled externally |
Compared with IDT70V25L20PF and IS61LV25616AL-10TLI, the CY7C006A-20AC uniquely integrates arbitration, semaphores, and interrupts in a 5 V-compatible 16K × 8 dual-port package-reducing BOM count and PCB area while guaranteeing deterministic inter-processor behavior without firmware overhead.
Availability
CY7C006A-20AC is available at Aetrix Electronics and suitable for interprocessor communication buffers, video frame memory, and multiprocessor real-time control systems requiring stable component supply and long-term lifecycle support.
Supply support for CY7C006A-20AC 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 embedded systems, with expertise in low-power, mixed-signal, and interface-integrated ICs.
The CY7C006A belongs to Cypress's legacy dual-port SRAM product line, engineered specifically for deterministic, contention-free memory sharing between heterogeneous processors in telecom, industrial automation, and graphics subsystems.
FAQ
What is the function of the M/S pin in CY7C006A-20AC?
The M/S pin configures the device as master (M/S = HIGH) or slave (M/S = LOW). In master mode, BUSY pins are outputs that drive slave BUSY inputs; in slave mode, BUSY pins become inputs accepting arbitration signals from the master. This enables 16-bit+ word-width expansion without external logic.
How does semaphore operation prevent race conditions between ports?
Semaphore latches are accessed via SEM pin with A0–A2 addressing. Writing zero claims ownership; reading returns current state. Only the side showing zero may modify the latch. The read value is latched to prevent change during cross-port writes, ensuring atomic acquire/release without software polling.
Can CY7C006A-20AC operate with mixed voltage interfaces (e.g., 3.3 V controller with 5 V SRAM)?
No-CY7C006A-20AC requires VCC = 5 V ±10% and all I/O pins are TTL/CMOS compatible at 5 V levels. Interfacing with 3.3 V controllers requires level-shifting on all address, data, and control lines to avoid overvoltage damage and ensure VIH/VIL thresholds are met.
What happens during simultaneous access to the same memory location by both ports?
On-address match within tPS (setup window), on-chip arbitration asserts BUSY on the losing port after tBLA/tBLC delay. The winning port gains immediate access; the losing port must wait until BUSY deasserts. If tPS is violated, access outcome is undefined but one port always succeeds.
CY7C006A-20AC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 128Kbit
- Memory Organization:
- 16K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20ns
- Access Time:
- 20 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (14x14)
CY7C006A-20AC FAQ
1.How can I place an order for CY7C006A-20AC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C006A-20AC 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 CY7C006A-20AC reliable?
The price and inventory of CY7C006A-20AC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C006A-20AC is usually 5 days.
3.What payment methods are accepted for CY7C006A-20AC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C006A-20AC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C006A-20AC?
CY7C006A-20AC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C006A-20AC 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 CY7C006A-20AC?
For technical support, including CY7C006A-20AC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C006A-20AC requirements.
6.How does Aetrix verify that CY7C006A-20AC is sourced from the original manufacturer or authorized distributors?
All CY7C006A-20AC 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 CY7C006A-20AC meets industry standards.
7.What is the process for return or replacement of CY7C006A-20AC?
All CY7C006A-20AC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C006A-20AC, 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 CY7C006A-20AC part is unused and in its original packaging.
Return procedure for CY7C006A-20AC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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