My Inquiry
My Account
Infineon Technologies CY7C026AV-20AXI
- Part No.:
- CY7C026AV-20AXI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
CY7C026AV-20AXI.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,762
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY7C026AV-20AXI from Cypress Semiconductor is a 3.3V, 16K × 16-bit true dual-port static RAM with independent asynchronous ports, 20 ns access time, on-chip arbitration logic, and integrated semaphores - designed for interprocessor communication in real-time embedded systems requiring deterministic memory coherency.
For engineers reviewing the CY7C026AV-20AXI datasheet, CY7C026AV-20AXI pinout, CY7C026AV-20AXI application, or CY7C026AV-20AXI equivalent, key selection criteria include simultaneous port access timing, BUSY/INT/SEM signal behavior, M/S expandability for 32-bit bus width, and industrial temperature operation (–40°C to +85°C) in 100-pin TQFP packaging.
Technical Context
This device implements a fully asynchronous dual-port SRAM architecture with separate address, data, and control buses per port (left/right), enabling concurrent read/write operations to any memory location. It integrates hardware arbitration via BUSY flags, software handshaking via eight semaphore latches, and port-to-port messaging using dedicated mailbox addresses (0x3FFF and 0x3FFE).
Arbitration resolution occurs within tPS (≤5 ns), with BUSY asserted tBLA (≤8 ns) after address match or tBLC (≤10 ns) after CE assertion. The M/S pin configures the device as master (BUSY output) or slave (BUSY input), supporting seamless 32-bit expansion without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 16K × 16-bit (65,536 words × 16 bits); A0–A13 address lines per port |
| Access Time | 20 ns maximum - guarantees deterministic read latency under worst-case industrial conditions |
| Operating Voltage | 3.3 V ± 0.3 V - compatible with modern low-voltage microcontroller and FPGA I/O domains |
| Active Current | 115 mA typical - enables power budgeting for multi-port memory subsystems |
| Standby Current | 10 μA typical (ISB3, both ports CMOS-level) - supports ultra-low-power sleep modes |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade embedded control and communications equipment |
| Package | 100-pin Pb-free TQFP (14 mm × 14 mm, 0.5 mm pitch) - surface-mount compatible with standard reflow profiles |
Pinout & Package
Package: 100-pin Thin Quad Flat Pack (TQFP), RoHS-compliant, body size 14 mm × 14 mm, lead pitch 0.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CEL / CER | Chip Enable (Left / Right) | Independent port activation; drives automatic power-down when deasserted |
| R/WL / R/WR | Read/Write Control (Left / Right) | Active-low write enable; high = read mode, low = write mode |
| OEL / OER | Output Enable (Left / Right) | Controls tri-state of IO bus; required for valid read data output |
| A0L–A13L / A0R–A13R | Address Inputs (Left / Right) | 14-bit address bus per port; selects one of 16K memory locations |
| IO0L–IO15L / IO0R–IO15R | Data Bus (Left / Right) | 16-bit bidirectional data path; UBL/LBL support byte-select writes |
| SEML / SEMR | Semaphore Enable (Left / Right) | Chip select for 8 semaphore latches; enables resource locking between ports |
| INTL / INTR | Interrupt Flag (Left / Right) | Open-drain output signaling mailbox write; reset by reading mailbox address |
| BUSYL / BUSYR | Busy Flag (Left / Right) | Indicates contention at same address; output in master mode, input in slave mode |
| M/S | Master/Slave Select | High = master (BUSY outputs), Low = slave (BUSY inputs); enables 32-bit bus expansion |
| UBL / UBR, LBL / LBR | Upper/Lower Byte Select | Enables independent 8-bit writes to upper (IO8–IO15) or lower (IO0–IO7) byte lanes |
Key Features
| Feature | Design Value |
|---|---|
| True dual-port architecture | Simultaneous, independent read/write access to identical memory locations with hardware arbitration |
| On-chip semaphore logic | Eight dedicated latches for software-controlled resource sharing between ports without CPU polling overhead |
| Port-to-port interrupt messaging | Dedicated mailbox addresses (0x3FFF/0x3FFE) with automatic INT assertion on cross-port write |
| Byte-selectable write capability | UBL/LBL pins allow atomic 8-bit updates to upper or lower byte without affecting adjacent data |
| Master/slave expandability | M/S pin enables cascading multiple devices into 32-bit-wide memory without external glue logic |
Applications
| Industrial PLC Data Exchange | Real-Time Video Frame Buffering |
|---|---|
|
Use Scenario: Two independent CPUs in a programmable logic controller share status, I/O mapping, and motion control parameters via shared memory. IC Role / Device Role / Timing Role: Dual-port SRAM acts as coherent interprocessor communication buffer with deterministic arbitration and semaphore-based mutual exclusion. Use Value: Eliminates software handshake delays; BUSY/INT signals ensure zero-latency coordination between ladder logic and motion engines. |
Use Scenario: A video processor writes rendered frames while a display controller reads prior frames for HDMI output - requiring zero-copy, non-blocking memory access. IC Role / Device Role / Timing Role: Memory serves as ping-pong frame buffer with independent read/write ports synchronized only by BUSY flag during line-buffer overlap. Use Value: Enables 60 Hz full-HD streaming with no frame tearing or CPU intervention due to hardware-managed port arbitration. |
| Telecom Protocol Stack Buffering | Avionics Sensor Fusion Hub |
|
Use Scenario: Baseband and application processors exchange packetized voice/data in LTE base station firmware using shared descriptor rings and payload buffers. IC Role / Device Role / Timing Role: SRAM provides low-latency, cache-coherent packet metadata exchange with semaphore-protected ring head/tail pointers. Use Value: Reduces protocol stack latency by 3.2 μs vs. software-mutexed DRAM, meeting 3GPP sub-10μs inter-CPU sync requirements. |
Use Scenario: Flight control computer aggregates inertial, GPS, and barometric sensor data across redundant processing channels with strict determinism. IC Role / Device Role / Timing Role: Memory functions as fault-tolerant sensor fusion register bank, where semaphores enforce single-writer/multi-reader consistency. Use Value: Guarantees <100 ns worst-case arbitration delay between safety-critical channels, satisfying DO-254 Level A timing budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT70V27L20PF | 16K × 16-bit, 20 ns, 3.3V, but lacks integrated semaphores and INT mailbox logic | Requires external logic or firmware for resource arbitration and inter-port signaling | Choose when system already implements software semaphore management and needs pin-compatible drop-in replacement |
| ISSI IS61WV102416BLL-20NLI | 1M × 16-bit, 20 ns, 3.3V, no BUSY/INT/SEM - single-port architecture with async interface | Cannot support true simultaneous dual-access; requires external arbitration circuitry | Choose only for cost-sensitive, non-contention applications where interprocessor coordination is handled externally |
Compared with IDT70V27L20PF and IS61WV102416BLL-20NLI, CY7C026AV-20AXI delivers hardware-enforced coherency through on-die arbitration, semaphores, and mailbox interrupts - reducing BOM count, firmware complexity, and worst-case latency in tightly coupled multiprocessor systems.
Availability
CY7C026AV-20AXI is available at Aetrix Electronics and suitable for industrial automation, avionics data concentrators, and telecom baseband subsystems requiring stable component supply, long-lifecycle support, and guaranteed Pb-free TQFP sourcing.
Supply support for CY7C026AV-20AXI 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 markets.
CY7C026AV belongs to the CY7C02xAV dual-port SRAM product line, engineered specifically for deterministic interprocessor communication in real-time embedded systems where software-managed memory coherency is insufficient.
FAQ
What is the function of the M/S pin in CY7C026AV-20AXI?
The M/S pin configures the device as master (logic HIGH) or slave (logic LOW). In master mode, BUSY pins drive outputs to coordinate arbitration with slave devices; in slave mode, BUSY pins accept inputs from the master. This enables seamless 32-bit data bus expansion using multiple CY7C026AV-20AXI units without external logic.
How does the semaphore mechanism prevent race conditions between ports?
The eight on-chip semaphore latches operate as mutually exclusive resource locks: writing '0' to a semaphore grants ownership to that port; reading returns '0' if owned, '1' if free. The latch state is visible to both ports, and only the owning port can modify it - ensuring atomic acquisition/release without CPU polling or external arbitration.
Can CY7C026AV-20AXI operate with mixed voltage interfaces (e.g., 3.3V core, 1.8V I/O)?
No. CY7C026AV-20AXI is a single-supply 3.3V device (VCC = 3.3V ± 0.3V). All I/O pins - including address, data, and control signals - are strictly 3.3V-tolerant and require compatible 3.3V logic levels. Interfacing to 1.8V systems requires level-shifting circuitry on all signal paths.
What happens when both ports attempt to access the same address simultaneously?
On-chip arbitration asserts BUSY on the losing port within ≤8 ns (tBLA) of address match. The winning port gains immediate access; the losing port's data bus enters high-impedance state and must wait until BUSY deasserts. If tPS (≤5 ns setup) is violated, arbitration outcome remains deterministic but not predictable - requiring firmware to poll BUSY before retrying.
CY7C026AV-20AXI 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:
- 20ns
- Access Time:
- 20 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
CY7C026AV-20AXI FAQ
1.How can I place an order for CY7C026AV-20AXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C026AV-20AXI 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 CY7C026AV-20AXI reliable?
The price and inventory of CY7C026AV-20AXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C026AV-20AXI is usually 5 days.
3.What payment methods are accepted for CY7C026AV-20AXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C026AV-20AXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C026AV-20AXI?
CY7C026AV-20AXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C026AV-20AXI 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 CY7C026AV-20AXI?
For technical support, including CY7C026AV-20AXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C026AV-20AXI requirements.
6.How does Aetrix verify that CY7C026AV-20AXI is sourced from the original manufacturer or authorized distributors?
All CY7C026AV-20AXI 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 CY7C026AV-20AXI meets industry standards.
7.What is the process for return or replacement of CY7C026AV-20AXI?
All CY7C026AV-20AXI units undergo pre-shipment inspection (PSI). If there is an issue with CY7C026AV-20AXI, 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 CY7C026AV-20AXI part is unused and in its original packaging.
Return procedure for CY7C026AV-20AXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C026AV-20AXI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
