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Infineon Technologies CY7C1009B-15VXCT
- Part No.:
- CY7C1009B-15VXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 32-BSOJ (0.300", 7.62mm Width)
- Datasheet:
-
CY7C1009B-15VXCT.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,484
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Product details
Overview
CY7C1009B-15VXCT from Cypress Semiconductor is a 128K × 8 (1,048,576-bit) high-speed CMOS static RAM with 15 ns access time, TTL-compatible I/O, dual chip enable (CE1 active-low, CE2 active-high), and automatic power-down when deselected. It operates at 5V ±10%, supports commercial temperature range (0°C to +70°C), and is packaged in a 32-pin 300-mil SOJ.
For engineers reviewing the CY7C1009B-15VXCT datasheet, CY7C1009B-15VXCT pinout, CY7C1009B-15VXCT application, or CY7C1009B-15VXCT equivalent, key selection criteria include tAA = 15 ns read timing, ISB2 = 10 mA CMOS standby current, VCC = 5V operation, and functional equivalence with CY7C109B-15VXCT except for package width.
Technical Context
This SRAM implements asynchronous random-access memory architecture with full address decoding (A0–A16), tri-state bidirectional I/O (I/O0–I/O7), and independent control of chip select, output enable, and write enable. Its dual CE interface enables seamless bank expansion without external logic.
The device uses CMOS process technology to achieve low active power (max 495 mW) and ultra-low standby current (10 mA max, 2 mA for L version), with data retention down to 2.0V VCC. All inputs meet TTL voltage thresholds, and outputs drive standard TTL loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8 (131,072 words × 8 bits); supports byte-wide data bus interfacing without width conversion logic |
| Access Time (tAA) | 15 ns maximum; defines minimum clock-to-data delay in synchronous systems using external timing control |
| VCC Supply | 5V ±10%; compatible with legacy 5V TTL/CMOS system rails without level-shifting |
| Operating Temperature | 0°C to +70°C (Commercial); validated for stable operation across industrial ambient without derating |
| Standby Current (ISB2) | 10 mA maximum (CMOS inputs); enables low-power hold mode during processor sleep or idle cycles |
| Data Retention Voltage | 2.0V minimum; allows battery-backed retention during main supply removal without data loss |
| Input Capacitance | 9 pF typical; limits trace routing complexity and signal integrity impact on high-speed address/control buses |
Pinout & Package
Package: 32-pin 300-mil molded SOJ (package code 51-85041), lead-free (Pb-free) variant per ordering suffix "X".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus; selects one of 131,072 memory locations; no internal latching |
| I/O0–I/O7 | Bidirectional Data Bus | Tri-state CMOS I/O pins; share function for read data output and write data input |
| CE1 | Chip Enable 1 | Active-low primary chip select; must be LOW with CE2 HIGH to enable device operation |
| CE2 | Chip Enable 2 | Active-high secondary chip select; complements CE1 for hierarchical memory mapping |
| OE | Output Enable | Active-low control for output drivers; HIGH places I/O pins in high-impedance state during reads |
| WE | Write Enable | Active-low signal initiating write cycle; concurrent with CE1 LOW and CE2 HIGH |
| VCC | Power Supply | +5V supply pin; decoupling capacitor required within 1 cm for stable 15 ns timing compliance |
| GND | Ground Reference | Signal and power ground; requires low-inductance connection to minimize switching noise |
| NC | No Connect | Pin 15 (SOJ top view); not bonded on die; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Dual Chip Enable Interface | CE1 (active-low) and CE2 (active-high) allow direct connection to microcontroller address decode logic without glue logic |
| Automatic Power-Down | Device enters low-current standby (ISB2 ≤10 mA) when CE1 HIGH or CE2 LOW - no software or external control needed |
| TTL-Compatible I/O | VIH = 2.2V min, VIL = 0.8V max ensures interoperability with 5V microcontrollers, FPGAs, and ASICs |
| 2.0V Data Retention | Maintains stored data with VCC reduced to 2.0V while CE1/CE2 inactive - enables battery backup designs |
| Tri-State Output Drivers | I/O pins enter high-Z state during deselect, OE HIGH, or write cycles - prevents bus contention in shared-memory systems |
Applications
| Industrial PLC Memory Buffer | Legacy Embedded Controller Cache |
|---|---|
|
Use Scenario: Storing real-time I/O status and configuration registers in programmable logic controllers operating in factory environments. IC Role / Device Role / Timing Role: Asynchronous byte-wide scratchpad memory interfaced directly to 8-bit microcontroller address/data bus. Use Value: 15 ns tAA enables deterministic response to fieldbus interrupt requests; 10 mA ISB2 reduces thermal load during scan-cycle idle periods. |
Use Scenario: Providing fast local program/data storage for 8051- and Z80-based medical instrumentation with strict EMI constraints. IC Role / Device Role / Timing Role: Non-volatile shadow RAM holding calibration tables and firmware patches during power-up sequence. Use Value: 2.0V data retention allows safe shutdown during brown-out events; SOJ package supports wave-solder reflow compatibility. |
| Automotive Diagnostic Tool RAM | Test Equipment Pattern Memory |
|
Use Scenario: Holding OBD-II protocol translation tables and vehicle-specific DTC definitions in handheld diagnostic scanners. IC Role / Device Role / Timing Role: Static RAM mapped into microcontroller's external memory space for zero-wait-state execution. Use Value: Dual CE architecture simplifies multi-bank memory expansion for future protocol updates; 5V tolerance avoids level shifters. |
Use Scenario: Storing stimulus/response vectors in automated test equipment used for IC functional validation. IC Role / Device Role / Timing Role: High-reliability, non-refreshing memory buffer synchronized to pattern generator clock edges. Use Value: 9 pF CIN minimizes capacitive loading on high-frequency address lines; tHZOE = 8 ns ensures clean output disable timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C109B-15VC | Same speed grade (15 ns), identical electrical specs, but in 400-mil SOJ package (51-85033) | Requires PCB footprint redesign; higher pin pitch eases hand-soldering and probe access | Select when board layout accommodates wider SOJ or manual assembly is prioritized over density |
| AS6C1008-15PCN | 128K × 8 SRAM, 15 ns, 5V, 32-pin SOJ; lower ICC (75 mA vs. 80 mA), same ISB2 (10 mA) | Pinout differs (A16/A15 swapped, CE2 absent); requires hardware redesign and firmware address remapping | Choose only if cost sensitivity outweighs redesign effort and long-term Cypress supply continuity is uncertain |
Compared with CY7C1009B-15VXCT, CY7C109B-15VC offers identical performance in a mechanically distinct package, while AS6C1008-15PCN trades pin compatibility for marginal power reduction and alternate sourcing - neither is drop-in replaceable without layout or firmware changes.
Availability
CY7C1009B-15VXCT is available at Aetrix Electronics and suitable for industrial PLC memory buffers, legacy embedded controller caches, automotive diagnostic tool RAM, and test equipment pattern memory requiring stable component supply and Pb-free compliance.
Supply support for CY7C1009B-15VXCT 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 solutions for industrial, automotive, and consumer applications.
CY7C1009B belongs to Cypress's legacy parallel SRAM product line, designed specifically for 5V systems requiring reliable, low-latency, non-refreshing memory with minimal external logic.
FAQ
Is CY7C1009B-15VXCT pin-compatible with CY7C109B-15VC?
No. While both devices share identical signal functionality and pin count, CY7C1009B-15VXCT uses a 300-mil SOJ footprint (51-85041), whereas CY7C109B-15VC uses a 400-mil SOJ (51-85033). Pin assignments match, but mechanical dimensions differ - PCB land patterns are not interchangeable without revision.
Does CY7C1009B-15VXCT support 3.3V operation?
No. The device is specified only for 5V ±10% (4.5V to 5.5V) operation. Input thresholds (VIH = 2.2V min) and output drive strength are optimized for 5V TTL/CMOS logic families. Operation below 4.5V violates datasheet limits and may cause timing violations or data corruption.
What is the purpose of the NC pin (Pin 15) in the SOJ package?
Pin 15 is designated NC (No Connect) and is not bonded to the silicon die. It must remain unconnected on the PCB. Routing traces or applying solder paste to this pin risks shorting adjacent pins or violating JEDEC SOJ mechanical standards, potentially causing functional failure.
Can CY7C1009B-15VXCT be used in industrial temperature range applications?
No. The "V" in CY7C1009B-15VXCT denotes Commercial temperature grade (0°C to +70°C). For industrial range (−40°C to +85°C), the correct part is CY7C1009B-15VI (ordering code 51-85041 with "I" suffix), which undergoes extended temperature screening and characterization.
CY7C1009B-15VXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 32-BSOJ (0.300", 7.62mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-15VXCT FAQ
1.How can I place an order for CY7C1009B-15VXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1009B-15VXCT 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-15VXCT reliable?
The price and inventory of CY7C1009B-15VXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1009B-15VXCT is usually 5 days.
3.What payment methods are accepted for CY7C1009B-15VXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1009B-15VXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1009B-15VXCT?
CY7C1009B-15VXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1009B-15VXCT 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-15VXCT?
For technical support, including CY7C1009B-15VXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1009B-15VXCT requirements.
6.How does Aetrix verify that CY7C1009B-15VXCT is sourced from the original manufacturer or authorized distributors?
All CY7C1009B-15VXCT 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-15VXCT meets industry standards.
7.What is the process for return or replacement of CY7C1009B-15VXCT?
All CY7C1009B-15VXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1009B-15VXCT, 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-15VXCT part is unused and in its original packaging.
Return procedure for CY7C1009B-15VXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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