My Inquiry
My Account
Infineon Technologies CY7C009-15AC
- Part No.:
- CY7C009-15AC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 100-LQFP
- Datasheet:
-
CY7C009-15AC.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,149
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY7C009-15AC from Cypress Semiconductor is a 128K × 8 true dual-port static RAM with independent left/right asynchronous ports, 15 ns maximum access time, 5 V supply, and integrated on-chip arbitration logic for interprocessor communication in real-time embedded systems.
For engineers reviewing the CY7C009-15AC datasheet, CY7C009-15AC pinout, CY7C009-15AC application, or CY7C009-15AC equivalent, key selection criteria include dual-port timing coordination, BUSY/INT flag behavior, semaphore latch control, M/S pin configuration for master/slave expansion, and CMOS-level standby current (0.05 mA typical) in industrial temperature range.
Technical Context
The CY7C009-15AC implements fully asynchronous dual-port operation with separate address, data, and control buses per port (A0L–A16L/I/O0L–I/O7L/R/WL/OEL/CEL and A0R–A16R/I/O0R–I/O7R/R/WR/OER/CER), enabling concurrent read/write to any memory location without external arbitration logic.
Its on-chip arbitration uses BUSY flags (output in master mode, input in slave mode), eight shared semaphore latches for software handshaking, and INT flags for port-to-port mailbox-style communication - all operating at TTL/CMOS-compatible voltage levels with 15 ns access timing guaranteed over 0°C to +70°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8 bits (131,072 words × 8-bit data bus per port) |
| Access Time | 15 ns max - defines minimum cycle time for reliable read/write under worst-case VCC/temperature conditions |
| Supply Voltage | 5 V ± 10% - requires stable 4.5–5.5 V rail; supports TTL/CMOS interface compatibility |
| Standby Current (ISB3) | 0.05 mA typical - achieved when both ports held at CMOS high-impedance (CE ≥ VCC – 0.2 V, f = 0) |
| Operating Temperature | 0°C to +70°C - commercial grade; validated across full range for timing and data retention |
| Package | 100-pin TQFP - surface-mount, 14 mm × 14 mm footprint with 0.5 mm pitch; pin-compatible with IDT7008 |
| Arbitration Logic | On-chip BUSY/INT/SEM signals - eliminates need for external glue logic in multiprocessor shared-memory designs |
Pinout & Package
CY7C009-15AC is housed in a 100-pin Thin Quad Plastic Flatpack (TQFP) package with exposed thermal pad (not electrically connected). Pin assignments are symmetric for left/right ports, supporting master/slave expansion via M/S pin configuration and dual chip enables (CE0/CE1 per port).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A16L / A0R–A16R | Address Inputs (Left/Right) | 17-bit address bus per port; A0–A16 required for 128K addressing (131,072 locations) |
| I/O0L–I/O7L / I/O0R–I/O7R | Bidirectional Data Bus (Left/Right) | 8-bit parallel data path per port; high-impedance when OEL/OER = HIGH or CE inactive |
| R/WL / R/WR | Read/Write Control (Left/Right) | Active-HIGH write enable; determines data direction during CE/OE assertion |
| OEL / OER | Output Enable (Left/Right) | Controls output buffer state independently per port; overrides R/W for tri-state control |
| CEL / CER | Chip Enable (Left/Right) | Two-level enable (CE0L/CE1L logic AND); enables port activity only when both CE0 ≤ VIL and CE1 ≥ VIH |
| BUSYL / BUSYR | Busy Flag (Left/Right) | Indicates contention on same address; output in master mode, input in slave mode |
| INTL / INTR | Interrupt Flag (Left/Right) | Open-drain interrupt signal for inter-port notification; requires external pull-up |
| SEML / SEMR | Semaphore Enable (Left/Right) | Activates one of eight shared semaphore latches for resource locking between ports |
| M/S | Master/Slave Select | Configures device role in 16/18-bit wide memory expansion; eliminates need for discrete master/slave chips |
Key Features
| Feature | Design Value |
|---|---|
| True Dual-Port Architecture | Enables simultaneous, independent read/write access to identical memory locations without collision or wait states |
| On-Chip Arbitration Logic | Reduces system BOM by eliminating external priority encoders or bus controllers in multiprocessor designs |
| Eight Shared Semaphores | Provides hardware-enforced mutual exclusion for up to eight shared resources using software-controlled latches |
| Automatic Power-Down | Per-port power gating triggered by CE deassertion; achieves 0.05 mA ISB3 with CMOS-level inputs |
| Expandable Data Bus | Supports 16-bit+ memory width via M/S pin and cascaded CE0/CE1 without additional logic or address decoding |
Applications
| Interprocessor Communication Buffer | Dual-Port Video Frame Buffer |
|---|---|
|
Use Scenario: Two microcontrollers exchange status, command, and telemetry data in real time without shared bus contention. IC Role / Device Role / Timing Role: Dual-port SRAM acts as shared memory with BUSY/INT signaling and semaphore-controlled access coordination. Use Value: Eliminates polling delays and software locks; 15 ns access ensures sub-microsecond inter-core data transfer latency. |
Use Scenario: Graphics controller writes frame data while display engine reads previous frame synchronously. IC Role / Device Role / Timing Role: Left port serves as write interface for GPU; right port serves as read interface for video DAC or timing controller. Use Value: Enables flicker-free double-buffering with no external FIFO or arbitration logic; 128K × 8 capacity supports VGA-resolution frame stores. |
| Communications Protocol Stack Buffer | Industrial PLC I/O Mapping Memory |
|
Use Scenario: Modbus TCP gateway buffers incoming Ethernet packets and outgoing serial responses with deterministic timing. IC Role / Device Role / Timing Role: Acts as protocol translation buffer where one port handles network stack processing and the other handles UART/RS-485 framing. Use Value: Prevents packet loss during burst traffic; BUSY flag prevents overwrites during concurrent access; ISB3 < 0.1 mA supports low-power standby modes. |
Use Scenario: Programmable logic controller maintains mirrored I/O image across CPU and fieldbus interface modules. IC Role / Device Role / Timing Role: Provides atomic read-modify-write capability for I/O status registers using semaphore latches. Use Value: Ensures deterministic scan-cycle execution; 0°C to +70°C rating matches industrial enclosure environments; TQFP package supports automated reflow assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT7008L15JGI | Pin-compatible 128K × 8 dual-port SRAM; identical 15 ns access, but uses JTAG boundary-scan support and different standby current spec (ISB3 = 0.1 mA typ) | Preferred in JTAG-debugged systems requiring IEEE 1149.1 compliance; lacks M/S pin for native master/slave expansion | Select when JTAG testability is required and external arbitration logic is acceptable for wider bus expansion |
| ISSI IS61LV1288-15K | 128K × 8 single-port SRAM with lower cost and 15 ns speed; no dual-port logic, BUSY/INT, or semaphores | Requires external dual-port controller or FPGA-based arbitration; suitable only for non-concurrent access scenarios | Choose only if true simultaneous access is unnecessary and BOM cost reduction outweighs design complexity increase |
Compared with IDT7008L15JGI, CY7C009-15AC offers native M/S expansion and tighter ISB3 (0.05 mA vs. 0.1 mA); versus IS61LV1288-15K, it delivers hardware arbitration and true concurrency - critical for deterministic real-time interprocessor communication.
Availability
CY7C009-15AC is available at Aetrix Electronics and suitable for interprocessor communication buffers, dual-port video frame stores, communications protocol stack buffers, and industrial PLC I/O mapping memory requiring stable component supply and long-term industrial availability.
Supply support for CY7C009-15AC 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 memory, microcontrollers, and programmable logic solutions for embedded and industrial applications.
CY7C009 belongs to Cypress's legacy dual-port SRAM product line, designed specifically for deterministic, low-latency shared-memory architectures in multiprocessor and real-time control systems.
FAQ
What is the function of the M/S pin on CY7C009-15AC?
The M/S (Master/Slave) pin configures the device for 16-bit or wider memory expansion without external logic. When asserted HIGH, it enables master mode with BUSY as output; LOW selects slave mode with BUSY as input. This allows cascading multiple CY7C009 devices into a unified wide-data bus using CE0/CE1 handshaking - confirmed in Cypress Document #38-06041, page 2.
How does the semaphore logic operate in CY7C009-15AC?
The CY7C009-15AC integrates eight shared semaphore latches accessible via SEML/SEMR and dedicated address lines. Only one port can assert control of a given semaphore at a time, providing hardware-enforced mutual exclusion for shared resources. Each latch toggles on write and reflects state on read - detailed in Functional Description section, page 2 of datasheet #38-06041.
Can CY7C009-15AC operate with mixed voltage interfaces (e.g., 3.3 V logic driving 5 V VCC)?
No. CY7C009-15AC requires 5 V ± 10% supply (4.5–5.5 V) and specifies VIH = 2.2 V, VIL = 0.8 V - compatible only with 5 V TTL/CMOS logic families. Driving inputs from 3.3 V systems violates VIH minimum and risks unreliable operation; level-shifting circuitry is mandatory for interfacing with lower-voltage controllers.
What is the minimum pulse width required for R/W and OE signals?
The datasheet specifies tPWE (write pulse width) ≥ 15 ns and tDOE (OE low to data valid) ≤ 12 ns for -15 speed grade. All control signals must meet these timing constraints with ≤ 3 ns transition times and proper load conditions (30 pF for AC testing). These values are measured at 1.5 V threshold and validated across 0°C to +70°C - see Switching Characteristics table, page 7 of #38-06041.
CY7C009-15AC 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:
- 1Mbit
- Memory Organization:
- 128K x 8
- 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)
CY7C009-15AC FAQ
1.How can I place an order for CY7C009-15AC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C009-15AC 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 CY7C009-15AC reliable?
The price and inventory of CY7C009-15AC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C009-15AC is usually 5 days.
3.What payment methods are accepted for CY7C009-15AC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C009-15AC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C009-15AC?
CY7C009-15AC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C009-15AC 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 CY7C009-15AC?
For technical support, including CY7C009-15AC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C009-15AC requirements.
6.How does Aetrix verify that CY7C009-15AC is sourced from the original manufacturer or authorized distributors?
All CY7C009-15AC 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 CY7C009-15AC meets industry standards.
7.What is the process for return or replacement of CY7C009-15AC?
All CY7C009-15AC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C009-15AC, 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 CY7C009-15AC part is unused and in its original packaging.
Return procedure for CY7C009-15AC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C009-15AC 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…
