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Infineon Technologies CY7C006A-20JXCT
- Part No.:
- CY7C006A-20JXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
CY7C006A-20JXCT.pdf
- Description:
- IC SRAM 128KBIT PARALLEL 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,428
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Product details
Overview
CY7C006A-20JXCT from Cypress Semiconductor is a 16K × 8 true dual-port static RAM with independent left/right ports, 20 ns access time, 5 V supply, and on-chip arbitration logic for simultaneous memory access. It supports interprocessor communication via BUSY/INT/SEM signals and operates in commercial temperature range (0 °C to +70 °C) for embedded control and video buffering applications.
For engineers reviewing the CY7C006A-20JXCT datasheet, CY7C006A-20JXCT pinout, CY7C006A-20JXCT application, or CY7C006A-20JXCT equivalent, key selection criteria include asynchronous dual-port timing, master/slave expandability, semaphore-controlled resource sharing, and PLCC-68 package compatibility with legacy board layouts.
Technical Context
The CY7C006A-20JXCT implements fully asynchronous dual-port operation with separate address, data, and control buses per port (A0L–A13L/I/O0L–I/O7L/CEL/OEL/R/WL/BUSYL/INTL/SEML and mirrored right-side signals). On-chip arbitration resolves contention using BUSY assertion with tBLA = 8 ns and tBLC = 10 ns timing windows.
It integrates eight dedicated semaphore latches accessible via SEM pin with A0–A2 addressing, enabling software handshaking without external logic. The M/S pin configures the device as master (BUSY output) or slave (BUSY input), supporting 16-bit+ data bus expansion without discrete glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 16K × 8 bits - provides 131,072 bytes of shared RAM accessible independently by two processors |
| Access Time | 20 ns - guarantees deterministic read/write response for real-time interprocessor messaging |
| Supply Voltage | 5 V ±10% - compatible with standard TTL/CMOS logic families and legacy 5 V system rails |
| Active Current | 180 mA typical - enables low-power operation in continuously active dual-processor nodes |
| Standby Current | 0.05 mA typical (ISB3) - supports power-sensitive applications during idle periods between bursts |
| Operating Temperature | 0 °C to +70 °C - validated for commercial-grade industrial control and communications equipment |
| Package Type | 68-pin PLCC - surface-mount compatible with wave-solder reflow and repair-friendly socketing |
Pinout & Package
Package: 68-pin Plastic Leaded Chip Carrier (PLCC), JEDEC MS-026AC compliant, body size 24.2 mm × 24.2 mm, lead pitch 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Independent port activation; deassertion places port in automatic power-down mode |
| OEL / OER | Output Enable (Left / Right) | Controls tri-state of I/O bus; required with CE for valid read data output |
| R/WL / R/WR | Read/Write Control (Left / Right) | High = read, low = write; defines direction of data transfer on active port |
| BUSYL / BUSYR | Busy Flag (Left / Right) | Output in master mode, input in slave mode; indicates arbitration conflict on shared address |
| INTL / INTR | Interrupt Flag (Left / Right) | Asynchronous signal generated when opposite port writes to mailbox (3FFFh/3FFEh) |
| SEML / SEMR | Semaphore Enable (Left / Right) | Chip select for eight dedicated semaphore latches; enables resource locking protocol |
| M/S | Master/Slave Select | High = master (BUSY outputs), low = slave (BUSY inputs); enables daisy-chained 16-bit expansion |
| A0L–A13L / A0R–A13R | Address Inputs (Left / Right) | 14-bit address bus per port; decodes 16K locations (0000h–3FFFh) independently |
| I/O0L–I/O7L / I/O0R–I/O7R | Data Bus (Left / Right) | 8-bit bidirectional data path per port; electrically isolated with independent OE control |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Simultaneous independent read/write to same memory location with deterministic arbitration via BUSY signaling |
| On-Chip Semaphore Logic | Eight dedicated hardware latches enable atomic resource locking without software polling overhead or external logic |
| Master/Slave Expandability | Single M/S pin configures device for 16-bit+ bus width expansion without external arbitration ICs or discrete gates |
| Mailbox-Based Interrupts | Two dedicated high-address mailboxes (3FFFh/3FFEh) support zero-latency interprocessor message passing |
| Automatic Power-Down | Per-port CE control reduces current to 0.05 mA typical when inactive-critical for burst-mode systems |
Applications
| Interprocessor Communication | Dual-Port Video Frame Buffer |
|---|---|
|
Use Scenario: Two microcontrollers exchange status and command data in real time without shared bus contention. IC Role / Device Role / Timing Role: Shared memory interface with hardware arbitration and mailbox interrupts ensuring deterministic latency. Use Value: Eliminates need for external FIFOs or dual-CPU coherency protocols; 20 ns access enables sub-microsecond message turnaround. |
Use Scenario: Graphics controller writes frame data while display engine reads previous frame synchronously. IC Role / Device Role / Timing Role: Asynchronous dual-port buffer decoupling write/read timing domains with no external clock domain crossing logic. Use Value: Prevents visual tearing by enabling full-frame swap without CPU intervention or DRAM refresh cycles. |
| Communications Protocol Stack Buffer | Industrial PLC Data Exchange |
|
Use Scenario: Modbus TCP stack on ARM core writes packet payloads while network MAC layer reads for transmission. IC Role / Device Role / Timing Role: Memory-mapped buffer with semaphore-controlled ownership transfer between protocol layers. Use Value: Guarantees packet integrity across layer boundaries; avoids race conditions during concurrent TX/RX operations. |
Use Scenario: PLC main CPU updates I/O image table while motion controller reads latest sensor values and writes actuator commands. IC Role / Device Role / Timing Role: Deterministic shared memory region with BUSY-flagged arbitration for safety-critical real-time updates. Use Value: Meets IEC 61131-3 scan-cycle timing requirements with worst-case 20 ns memory access guarantee. |
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 | 20 ns access, 5 V, 16K × 8, but uses 100-pin TQFP and lacks integrated semaphores | Requires external logic for resource locking and interrupt generation | Select when footprint flexibility outweighs need for on-chip arbitration features |
| ISSI IS61LV25616AL-20TQLI | 20 ns access, 3.3 V only, 256K × 16 organization, no BUSY/SEM/INT pins | Not functionally compatible-requires redesign of control logic and voltage translation | Consider only for new 3.3 V designs where dual-port arbitration is handled externally |
Compared with IDT70V25L20PF and IS61LV25616AL-20TQLI, the CY7C006A-20JXCT delivers integrated arbitration, semaphores, and interrupts in a single 68-pin PLCC package-reducing BOM count, PCB area, and firmware complexity for legacy 5 V interprocessor systems.
Availability
CY7C006A-20JXCT is available at Aetrix Electronics and suitable for interprocessor communication, dual-port video buffering, communications protocol stack buffering, and industrial PLC data exchange requiring stable component supply and long-term obsolescence management.
Supply support for CY7C006A-20JXCT 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 fabless semiconductor company specializing in programmable system-on-chip, memory, and USB connectivity solutions for embedded systems.
The CY7C006A belongs to Cypress's legacy dual-port SRAM product line, designed specifically for deterministic interprocessor communication in 5 V industrial and communications equipment where hardware arbitration and mailbox messaging reduce firmware overhead.
FAQ
What is the function of the M/S pin on CY7C006A-20JXCT?
The M/S (Master/Slave) pin configures the device for 16-bit or wider memory expansion. When tied HIGH, it operates as a master with BUSY pins as outputs; when LOW, it acts as a slave with BUSY pins as inputs. This eliminates external arbitration logic when cascading multiple devices for word-width expansion.
How do the semaphore latches operate in CY7C006A-20JXCT?
The CY7C006A-20JXCT includes eight dedicated hardware semaphore latches accessed via the SEM pin and A0–A2. Writing a 0 to a semaphore grants exclusive control to that port; reading returns the current state. Semaphores prevent race conditions when two ports share peripherals like ADCs or UARTs.
Can CY7C006A-20JXCT operate with mixed voltage interfaces?
No. The CY7C006A-20JXCT is specified only for 5 V ±10% operation. Its input thresholds (VIH = 2.2 V, VIL = 0.8 V) and output drive levels are optimized for TTL/5 V CMOS logic families. Interfacing with 3.3 V systems requires level-shifting circuitry.
What happens during simultaneous access to the same memory location?
When both ports attempt access within tPS (setup window), on-chip arbitration asserts BUSY on the losing port after tBLA (8 ns) or tBLC (10 ns). The winning port proceeds; the losing port must wait until BUSY deasserts before retrying-ensuring deterministic, collision-free access.
CY7C006A-20JXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 68-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:
- 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:
- 68-PLCC (24.23x24.23)
CY7C006A-20JXCT FAQ
1.How can I place an order for CY7C006A-20JXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C006A-20JXCT 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-20JXCT reliable?
The price and inventory of CY7C006A-20JXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C006A-20JXCT is usually 5 days.
3.What payment methods are accepted for CY7C006A-20JXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C006A-20JXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C006A-20JXCT?
CY7C006A-20JXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C006A-20JXCT 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-20JXCT?
For technical support, including CY7C006A-20JXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C006A-20JXCT requirements.
6.How does Aetrix verify that CY7C006A-20JXCT is sourced from the original manufacturer or authorized distributors?
All CY7C006A-20JXCT 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-20JXCT meets industry standards.
7.What is the process for return or replacement of CY7C006A-20JXCT?
All CY7C006A-20JXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C006A-20JXCT, 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-20JXCT part is unused and in its original packaging.
Return procedure for CY7C006A-20JXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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