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Infineon Technologies CY7C1009B-15VC
- Part No.:
- CY7C1009B-15VC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 32-BSOJ (0.300", 7.62mm Width)
- Datasheet:
-
CY7C1009B-15VC.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:4,411
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Product details
Overview
CY7C1009B-15VC from Cypress Semiconductor is a 128K × 8 (131,072 words × 8-bit) high-speed CMOS static RAM with 15 ns access time, 5 V ±10% supply, TTL-compatible I/O, and automatic CE power-down. It operates in commercial temperature range (0°C to +70°C) and is used in embedded controllers, industrial PLCs, and legacy communication interface buffers where deterministic read/write timing and low standby current are required.
For engineers reviewing the CY7C1009B-15VC datasheet, CY7C1009B-15VC pinout, CY7C1009B-15VC application, or CY7C1009B-15VC equivalent, this page delivers verified functional identity, validated SOJ-32 pin mapping, confirmed 15 ns tAA/tRC timing, exact power consumption specs (80 mA active / 10 mA CMOS standby), and real-world use cases in memory-mapped I/O systems.
Technical Context
The CY7C1009B-15VC implements a fully asynchronous SRAM architecture with dual chip enable logic (CE1 active-low, CE2 active-high), tri-state bidirectional I/O drivers, and automatic power-down when deselected. Its address decoding supports full 17-bit addressing (A0–A16) for 131,072 locations, and write control requires simultaneous CE1 LOW, CE2 HIGH, and WE LOW.
It features separate OE-controlled read path and WE-controlled write path, with guaranteed data hold (tOHA = 3 ns) and output disable timing (tHZOE = 8 ns). The device uses standard CMOS process with 2.0 V data retention capability and meets MIL-STD-883 Class 1B ESD rating (>2001 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8 (131,072 words × 8-bit); enables byte-wide data bus interfacing without external multiplexing |
| Access Time (tAA) | 15 ns max; guarantees deterministic read latency for 66 MHz bus systems with zero wait states |
| VCC Supply | 5 V ±10%; compatible with legacy 5 V TTL/CMOS logic families without level translation |
| Active Current (ICC) | 80 mA max at fMAX; defines thermal budget for dense PCB layouts in industrial enclosures |
| Standby Current (ISB2) | 10 mA max (CMOS inputs); enables low-power sleep mode during CPU idle cycles |
| Data Retention Voltage | 2.0 V min; allows battery-backed operation during main power loss without data corruption |
| Operating Temperature | 0°C to +70°C; qualified for commercial-grade embedded applications with no derating required |
Pinout & Package
Package: 32-pin 300-mil molded SOJ (package code 51-85041), JEDEC-standard footprint with gull-wing leads, lead-free option available (VXC suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit unidirectional address bus; A0 = LSB, A16 = MSB; supports full 128K address space |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit tri-state I/O; driven during read, latched during write, high-Z when deselected or OE HIGH |
| CE1 | Chip Enable 1 | Active-low primary selection signal; must be LOW with CE2 HIGH to enable device operation |
| CE2 | Chip Enable 2 | Active-high secondary selection signal; complements CE1 for hierarchical memory decoding |
| OE | Output Enable | Active-low read strobe; controls output driver enable independently of CE state |
| WE | Write Enable | Active-low write strobe; initiates write cycle when CE1 LOW and CE2 HIGH |
| VCC | Power Supply | +5 V ±10% main supply; powers core logic and I/O buffers |
| GND | Ground | Reference return path for all signals and power; pin 16 in SOJ-32 layout |
| NC | No Connect | Pin 15 (SOJ-32); not bonded on die; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| 15 ns access time with full 17-bit address decode | Enables direct interface to 66 MHz microcontrollers without wait-state insertion |
| Dual CE architecture (CE1/CE2) | Supports seamless memory expansion across multiple banks using standard address decoding logic |
| Automatic CE power-down | Reduces standby current to 10 mA without external control logic or sleep-mode software overhead |
| TTL-compatible input thresholds | Accepts standard 5 V logic levels (VIH ≥ 2.2 V, VIL ≤ 0.8 V) without level-shifting circuitry |
| 2.0 V data retention | Preserves memory contents during brown-out events or backup battery operation at minimal voltage |
Applications
| Industrial PLC Data Buffer | Legacy Communication Interface |
|---|---|
|
Use Scenario: Storing real-time I/O status and command history in programmable logic controllers with isolated 5 V backplane buses. IC Role / Device Role / Timing Role: Asynchronous byte-wide scratchpad memory providing zero-wait-state read/write for ladder logic scan cycles. Use Value: 15 ns tAA ensures deterministic response within 100 µs scan windows; 10 mA ISB2 minimizes heat buildup in sealed enclosures. |
Use Scenario: Buffering UART/RS-232 or parallel printer handshake data in legacy office equipment and point-of-sale terminals. IC Role / Device Role / Timing Role: Non-volatile shadow RAM holding protocol state and buffer pointers during host processor interrupts. Use Value: Dual CE pins simplify address decoding with 74LS138; 2.0 V retention maintains buffer integrity during brief AC dropout. |
| Embedded Controller Boot Memory | Test Equipment Firmware Cache |
|
Use Scenario: Holding boot loader code and configuration parameters in microcontroller-based instrumentation with limited Flash endurance. IC Role / Device Role / Timing Role: Static RAM mapped into reset vector space, accessed directly by Harvard-architecture CPU during cold start. Use Value: TTL-compatible I/O eliminates level shifters; 80 mA ICC supports burst reads without voltage droop on shared 5 V rail. |
Use Scenario: Caching calibration coefficients and waveform templates in automated test equipment requiring fast parameter recall. IC Role / Device Role / Timing Role: High-reliability data store accessed via DMA engine during pattern generation sequences. Use Value: 3 ns tOHA prevents address hold violations during high-speed burst transfers; SOJ-300 package supports reflow soldering in production lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV12816AL-15T | 128K × 16 organization, 3.3 V supply, 15 ns access, TSOP-48 package | Requires data bus width adaptation and level translation for 5 V systems | Select only if migrating to 3.3 V architecture and needing wider data path |
| CY7C1009D-15VC | Same 128K × 8, 5 V, SOJ-32, but improved ISB2 (2 mA vs. 10 mA) and extended temp range (–40°C to +85°C) | Direct drop-in replacement with lower standby power and industrial qualification | Prefer for new designs requiring extended temperature support or reduced quiescent current |
Compared with IS61LV12816AL-15T, CY7C1009B-15VC avoids bus-width conversion overhead in 5 V systems; compared with CY7C1009D-15VC, it trades higher standby current for lower cost and established qualification in commercial environments.
Availability
CY7C1009B-15VC is available at Aetrix Electronics and suitable for industrial PLCs, legacy communication interfaces, and embedded controller boot memory requiring stable component supply, long-lifecycle sourcing, and consistent SOJ-32 footprint compatibility.
Supply support for CY7C1009B-15VC 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, PSoC, and USB solutions, founded in 1982 and headquartered in San Jose, CA.
The CY7C1009B belongs to Cypress's legacy parallel SRAM product line, designed specifically for 5 V embedded systems requiring pin-compatible upgrades from older NMOS or bipolar RAMs while maintaining TTL signal integrity.
FAQ
Is CY7C1009B-15VC RoHS-compliant?
Yes - the CY7C1009B-15VC is RoHS-compliant per EU Directive 2011/65/EU. Lead-free versions are designated with the "VXC" suffix (e.g., CY7C1009B-15VXC), and both VC and VXC variants meet JEDEC J-STD-020 moisture sensitivity level 3 requirements.
Can CY7C1009B-15VC operate at 3.3 V?
No - the device is specified only for 5 V ±10% operation (4.5 V to 5.5 V). Attempting 3.3 V supply results in undefined behavior, including failure to meet 15 ns access time, increased ICC, and potential data corruption due to insufficient noise margin on TTL-compatible inputs.
What is the function of NC pin (Pin 15) in the SOJ-32 package?
Pin 15 is a true no-connect terminal - it is not bonded to the die and serves no electrical function. Per Cypress datasheet Rev. *C, it must remain unconnected on PCB; routing or grounding this pin may cause mechanical stress or contamination risk during assembly.
How does automatic power-down work without external control?
Automatic power-down activates when CE1 is HIGH or CE2 is LOW - the internal circuitry disables array biasing and I/O drivers, reducing ICC to ISB2 (10 mA max). No external signal or register write is needed; the feature is purely hardware-driven by CE pin states per truth table on page 7 of the datasheet.
CY7C1009B-15VC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 32-BSOJ (0.300", 7.62mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - 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:
- 32-SOJ
CY7C1009B-15VC FAQ
1.How can I place an order for CY7C1009B-15VC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1009B-15VC 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 CY7C1009B-15VC reliable?
The price and inventory of CY7C1009B-15VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1009B-15VC is usually 5 days.
3.What payment methods are accepted for CY7C1009B-15VC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1009B-15VC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1009B-15VC?
CY7C1009B-15VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1009B-15VC 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 CY7C1009B-15VC?
For technical support, including CY7C1009B-15VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1009B-15VC requirements.
6.How does Aetrix verify that CY7C1009B-15VC is sourced from the original manufacturer or authorized distributors?
All CY7C1009B-15VC 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 CY7C1009B-15VC meets industry standards.
7.What is the process for return or replacement of CY7C1009B-15VC?
All CY7C1009B-15VC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1009B-15VC, 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 CY7C1009B-15VC part is unused and in its original packaging.
Return procedure for CY7C1009B-15VC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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