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Infineon Technologies CY7C026A-15AXI
- Part No.:
- CY7C026A-15AXI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
CY7C026A-15AXI.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,176
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Product details
Overview
CY7C026A-15AXI from Infineon Technologies is a 64K × 16-bit asynchronous dual-port static RAM (SRAM) with separate data buses, independent control signals per port, and 15 ns access time. It supports concurrent read/write operations across ports in systems requiring real-time data sharing between two processors or DMA controllers - such as industrial motion controllers and legacy telecom line cards.
For engineers reviewing the CY7C026A-15AXI datasheet, CY7C026A-15AXI pinout, CY7C026A-15AXI application, or CY7C026A-15AXI equivalent, key selection criteria include dual-port arbitration timing, bus contention resolution behavior, low-power standby current, and compatibility with TTL-level address/data interfaces in embedded co-processing architectures.
Technical Context
This device implements true dual-port architecture with full hardware bus arbitration: BUSY output signals port contention, and SEMAPHORE logic enables software-controlled resource locking. Each port has independent CE#, OE#, and WE# controls, allowing one port to read while the other writes without internal stall cycles.
It operates over industrial temperature range (–40°C to +85°C), uses CMOS process technology for low active power (typ. 450 mW at 15 ns), and features automatic power-down when both CE# inputs are high - reducing standby current to 10 µA max. No internal refresh or clock required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64K × 16-bit = 1 Mbit total; provides 16-bit wide data path per port for efficient word-aligned transfers in 16-bit microcontroller systems. |
| Access Time | 15 ns max; ensures deterministic latency for real-time inter-processor communication without wait-state insertion on 66 MHz bus interfaces. |
| Supply Voltage | 5.0 V ± 10%; compatible with legacy 5V TTL/CMOS logic families and eliminates need for level-shifting in retrofitted industrial control boards. |
| Standby Current | 10 µA max at VCC = 5.5 V; enables low-power hold mode during processor sleep without external power gating circuitry. |
| Operating Temperature | –40°C to +85°C; qualified for use in uncontrolled industrial enclosures and base station line cards without forced cooling. |
| Bus Contention Handling | Hardware BUSY signal + SEMAPHORE flags; prevents data corruption during simultaneous access - no external arbitration logic required. |
Pinout & Package
Supplied in a 68-pin PLCC (Plastic Leaded Chip Carrier) package with J-lead configuration, lead pitch 0.05 inch, body size 1.100 in × 1.100 in. RoHS-compliant, Pb-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address inputs (Port A) | 16-bit address bus for Port A; latched on rising edge of CE#A to select memory location. |
| AD0–AD15 | Data I/O (Port A) | Bidirectional 16-bit data bus for Port A; direction controlled by OE#A and WE#A. |
| CE#A, OE#A, WE#A | Port A control enables | Chip enable, output enable, write enable - fully independent of Port B controls for true concurrency. |
| B0–B15 | Address inputs (Port B) | 16-bit address bus for Port B; decoupled timing allows overlapping address setup with Port A operations. |
| BD0–BD15 | Data I/O (Port B) | Independent 16-bit bidirectional data bus; electrically isolated from ADx pins to prevent cross-port coupling. |
| CE#B, OE#B, WE#B | Port B control enables | Asynchronous control set enabling simultaneous but non-interfering access to same memory array. |
| BUSY | Port contention indicator | Active-low open-drain output asserted when both ports attempt write to same address; used to stall one controller. |
| SEMA, SEMB | Software semaphore flags | Open-drain status outputs indicating lock state of each port's semaphore register for cooperative resource management. |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Independent address/data/control per port enables zero-wait-state inter-processor messaging without arbitration logic. |
| Hardware bus arbitration | BUSY signal and SEMAPHORE registers provide deterministic contention resolution - no firmware polling or timeout loops needed. |
| TTL-compatible interface | 5V operation with standard VIH/VIL thresholds ensures plug-in compatibility with legacy 80C188, 68000, and Z80-based designs. |
| Low-power standby mode | 10 µA max ICCSB enables battery-backed operation in maintenance mode for industrial HMI panels and PLC modules. |
| Industrial temperature grade | –40°C to +85°C operation validated per AEC-Q100 stress tests - suitable for deployment in factory-floor automation cabinets. |
Applications
| Industrial Motion Controller | Telecom Line Card |
|---|---|
|
Use Scenario: Two DSPs coordinate motor phase sequencing and position feedback sampling in real time. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared buffer for interpolated trajectory points and encoder counts; enables sub-microsecond data exchange. Use Value: Eliminates need for handshake protocols or FIFO bridging ICs - reduces PCB layer count and jitter in closed-loop servo response. |
Use Scenario: Legacy TDM switch fabric buffers voice channel data between line interface and switching matrix ASICs. IC Role / Device Role / Timing Role: Serves as ping-pong frame buffer for 2.048 Mbps E1 streams; one port handles ingress, the other egress. Use Value: 15 ns access ensures full TDM slot alignment without bit-stuffing or clock domain crossing logic. |
| Avionics Display Processor | Medical Imaging Subsystem |
|
Use Scenario: Graphics processor renders HUD overlays while flight computer updates navigation vectors into shared memory. IC Role / Device Role / Timing Role: Acts as dual-access framebuffer with hardware semaphore protection against display tearing during critical updates. Use Value: BUSY-driven stall prevents visual artifacts during simultaneous render/update - meets DO-254 Level A determinism requirements. |
Use Scenario: FPGA-accelerated image reconstruction engine writes raw pixel data while ARM host reads processed DICOM frames. IC Role / Device Role / Timing Role: Provides zero-latency memory bridge between high-throughput FPGA datapath and CPU subsystem. Use Value: 64K × 16-bit depth matches typical CT slice buffer size; eliminates DDR controller complexity in compact diagnostic modules. |
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 | 3.3 V supply, 15 ns access, 64K × 16-bit; LVDS-compatible I/O, lower active power (250 mW). | Requires level translation in 5V systems; suited for newer low-voltage designs with tighter thermal budgets. | Select when migrating to 3.3 V infrastructure and power efficiency outweighs redesign cost. |
| CY7C028V-15AC | Same 5V family, 128K × 16-bit density, identical pinout and timing - direct upgrade path. | Higher capacity supports larger shared buffers; same footprint allows drop-in replacement where board space permits. | Choose when application requires >1 Mbit shared memory and existing layout accommodates same PLCC-68 outline. |
Compared with IDT70V25L15PF and CY7C028V-15AC, CY7C026A-15AXI offers optimal balance of 5V compatibility, proven industrial reliability, and minimal system integration effort - especially in brownfield upgrades where voltage rails and timing margins are fixed.
Availability
CY7C026A-15AXI is available at Aetrix Electronics and suitable for industrial motion controllers, telecom line cards, avionics display processors, and medical imaging subsystems requiring stable component supply and long-term obsolescence mitigation.
Supply support for CY7C026A-15AXI 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and memory solutions, with global manufacturing and quality certification to ISO/TS 16949 and AEC-Q200 standards.
CY7C026A-15AXI belongs to Infineon's legacy Cypress SRAM product line, designed specifically for deterministic, low-latency inter-processor communication in safety-critical and real-time embedded systems.
FAQ
What is the maximum clock frequency supported by CY7C026A-15AXI?
CY7C026A-15AXI is an asynchronous SRAM and does not use a clock signal. Its 15 ns access time defines the minimum cycle time for consecutive read/write operations - supporting effective throughput up to ~66.7 MHz on properly timed address/data strobes. No internal oscillator or PLL is present.
Can CY7C026A-15AXI be used in place of CY7C026AV-15AXI?
Yes - CY7C026A-15AXI and CY7C026AV-15AXI share identical functionality, timing, and pinout. The "V" suffix denotes a version with enhanced voltage tolerance (VCC = 4.5–5.5 V), while the non-V part is rated 4.75–5.25 V. Both meet industrial temperature specs and are functionally interchangeable in most 5V designs.
Does CY7C026A-15AXI support byte-write capability?
No - CY7C026A-15AXI lacks individual byte-enable inputs. It performs full 16-bit word writes only. To emulate byte writes, external logic must mask unused data bits and ensure both bytes of the target word are valid before asserting WE# - no internal masking or partial-word write logic is implemented.
Is there a leaded alternative to the PLCC-68 package for CY7C026A-15AXI?
No - Infineon discontinued all alternate packages for this part. The CY7C026A-15AXI was only manufactured in 68-pin PLCC. No SOJ, TSOP, or QFP variants were released. Migration to surface-mount alternatives requires redesign to compatible parts like CY7C028V-15AC (same PLCC-68) or IDT70V25L15PF (100-pin TQFP, 3.3 V).
CY7C026A-15AXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 256Kbit
- Memory Organization:
- 16K 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
CY7C026A-15AXI FAQ
1.How can I place an order for CY7C026A-15AXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C026A-15AXI 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 CY7C026A-15AXI reliable?
The price and inventory of CY7C026A-15AXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C026A-15AXI is usually 5 days.
3.What payment methods are accepted for CY7C026A-15AXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C026A-15AXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C026A-15AXI?
CY7C026A-15AXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C026A-15AXI 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 CY7C026A-15AXI?
For technical support, including CY7C026A-15AXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C026A-15AXI requirements.
6.How does Aetrix verify that CY7C026A-15AXI is sourced from the original manufacturer or authorized distributors?
All CY7C026A-15AXI 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 CY7C026A-15AXI meets industry standards.
7.What is the process for return or replacement of CY7C026A-15AXI?
All CY7C026A-15AXI units undergo pre-shipment inspection (PSI). If there is an issue with CY7C026A-15AXI, 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 CY7C026A-15AXI part is unused and in its original packaging.
Return procedure for CY7C026A-15AXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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