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Infineon Technologies CY7C109BNL-15VC
- Part No.:
- CY7C109BNL-15VC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
CY7C109BNL-15VC.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,531
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Product details
Overview
CY7C109BNL-15VC from Cypress Semiconductor is a 128K × 8 (131,072 × 8) high-speed CMOS static RAM with 15 ns access time, TTL-compatible I/O, automatic CE power-down, and 2.0V data retention. It operates at 5V ±10% over 0°C to +70°C and is used in embedded controllers, industrial PLCs, and legacy communication interface buffers where deterministic low-latency read/write cycles are required.
For engineers reviewing the CY7C109BNL-15VC datasheet, CY7C109BNL-15VC pinout, CY7C109BNL-15VC application, or CY7C109BNL-15VC equivalent, key selection criteria include tAA = 15 ns access timing, ISB1 = 30 mA standby current under TTL input conditions, CE1/CE2 dual-chip-enable architecture for memory expansion, and SOJ-32 (400-mil) package compatibility with legacy board layouts.
Technical Context
This SRAM implements a synchronous, non-volatile-retentive memory array organized as 131,072 words × 8 bits, with fully decoded row/column addressing via A0–A16. Its dual chip-enable structure (CE1 active-low, CE2 active-high) enables seamless bank selection in multi-SRAM systems without external logic.
Three-state bidirectional I/O drivers (I/O0–I/O7) support bus sharing, while automatic power-down activates when CE1 is HIGH or CE2 is LOW - reducing ICC to 30 mA (ISB1) or 2 mA (ISB2) depending on input voltage thresholds. Data retention at 2.0V is guaranteed only when both CE inputs force deselection and all address/data lines remain within VCC ±0.3V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 131,072 × 8-bit array - supports byte-wide data buses without width conversion logic |
| Access Time (tAA) | 15 ns max - ensures sub-67 MHz read cycle compatibility in synchronous control systems |
| Operating Supply Current (ICC) | 75 mA max at fMAX - defines thermal budget for dense PCB layouts with multiple SRAMs |
| CMOS Standby Current (ISB2) | 2 mA max - enables low-power hold mode during processor sleep in battery-backed systems |
| Data Retention Voltage | 2.0 V min - allows operation from backup coin-cell sources during main power loss |
| Input/Output Voltage Levels | VIH = 2.2 V, VOL = 0.4 V - guarantees interoperability with 5V TTL and LVTTL peripherals |
| Capacitance (CIN/COUT) | 9 pF / 8 pF - constrains maximum trace length to ~2.5 inches on FR-4 for signal integrity at 15 ns edges |
Pinout & Package
The CY7C109BNL-15VC is packaged in a 32-pin SOJ (Small Outline J-Lead), 400-mil body width, with pin 1 identified by a notch or beveled corner. Lead finish is lead-free per RoHS Directive 2011/65/EU.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word decoding; no external address latching required |
| I/O0–I/O7 | Bidirectional Data Bus | Three-state drivers enable direct connection to shared microprocessor data bus; high-Z during deselect/write |
| CE1, CE2 | Dual Chip Enable | CE1 active-low + CE2 active-high logic permits hierarchical memory mapping without glue logic |
| OE | Output Enable | Active-low control of output drivers; independent of write state for read-modify-write sequences |
| WE | Write Enable | Active-low write strobe; initiates write only when CE1=LOW, CE2=HIGH, and WE=LOW |
| VCC, GND | Power Supply | Single 5V ±10% supply; decoupling capacitor (0.1 µF ceramic) required within 0.5 inch of VCC pin |
Key Features
| Feature | Design Value |
|---|---|
| 15 ns Access Time with Full Address Validity | tAA = 15 ns guaranteed across commercial temperature range - eliminates wait states in 66 MHz CPU interfaces |
| Automatic Power-Down on Deselection | ISB1 = 30 mA max when CE1 HIGH or CE2 LOW - reduces system standby power without software intervention |
| TTL-Compatible Interface | VIH = 2.2 V, VOH = 2.4 V @ –4 mA - interoperates directly with 74LS/74ALS families without level shifters |
| 2.0V Data Retention Mode | Retains valid data down to VCC = 2.0 V with CE forced inactive - supports brown-out recovery in industrial controllers |
| SOJ-32 (400-mil) Footprint Compatibility | Matches JEDEC MO-088 standard - enables drop-in replacement of legacy CY7C109B-15VC variants |
Applications
| Industrial PLC Memory Buffer | Legacy Telecom Line Card Cache |
|---|---|
Use Scenario: Stores real-time I/O status and configuration registers in modular programmable logic controllers with 8-bit microcontrollers. IC Role / Device Role / Timing Role: Byte-wide static RAM providing zero-wait-state data storage for cyclic scan execution at ≤10 ms intervals. Use Value: 15 ns tAA ensures deterministic response to interrupt-driven I/O updates; 2.0V retention maintains state during AC line dips. | Use Scenario: Caches protocol translation tables and channel assignment data in T1/E1 framing IC interfaces on telecom line cards. IC Role / Device Role / Timing Role: Non-volatile-retentive buffer holding critical link-layer parameters during hot-swap events. Use Value: Dual CE architecture isolates this SRAM from other memory banks during firmware updates; SOJ-32 footprint matches legacy repair stock. |
| Medical Diagnostic Equipment Display Buffer | Avionics Data Acquisition Module |
Use Scenario: Holds frame-aligned pixel data for monochrome LCD displays in portable ultrasound and ECG units. IC Role / Device Role / Timing Role: High-reliability display memory accessed by dedicated video controller with burst read capability. Use Value: Low 4 mW CMOS standby power extends battery life; 8-bit parallel interface minimizes controller GPIO usage. | Use Scenario: Buffers sensor ADC samples before packetization in DO-254-compliant flight data recorders. IC Role / Device Role / Timing Role: Deterministic latency SRAM ensuring timestamped sample coherency across multiple analog channels. Use Value: tHZOE = 8 ns and tHZCE = 8 ns guarantee clean bus release between acquisition cycles; 5V tolerance accommodates avionics power rail variance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C109BN-15VC | No "L" suffix; identical speed grade and SOJ-32 package but rated for commercial temperature only (0°C to +70°C) | Same pinout and timing; lacks extended reliability screening for long-life deployments | Select when cost sensitivity outweighs need for enhanced burn-in or lot traceability |
| AS6C1008-15PCN | 128K × 8 SRAM in 32-pin SOP; tAA = 15 ns, VCC = 5V, but ISB = 3 µA (vs. 2 mA) and no 2.0V retention | Lower standby power but incompatible retention behavior; SOP footprint requires PCB redesign | Choose only if ultra-low quiescent current is prioritized and retention not required |
Compared with CY7C109BN-15VC, the "L" suffix denotes enhanced screening for longer production lifecycle and tighter parametric consistency; versus AS6C1008-15PCN, CY7C109BNL-15VC provides guaranteed 2.0V data retention and legacy SOJ-32 compatibility essential for repair and obsolescence management.
Availability
CY7C109BNL-15VC is available at Aetrix Electronics and suitable for industrial PLCs, legacy telecom line cards, and medical diagnostic equipment requiring stable component supply across extended product lifecycles.
Supply support for CY7C109BNL-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) designs high-reliability memory and programmable logic solutions for industrial, automotive, and communications markets.
The CY7C109B series delivers high-speed, low-power static RAMs optimized for deterministic timing in legacy 8/16-bit microcontroller systems and interface bridging applications.
FAQ
What is the meaning of the "L" suffix in CY7C109BNL-15VC?
The "L" suffix indicates an enhanced reliability version with extended burn-in, tighter parameter screening, and improved lot-to-lot consistency-designed specifically for long-lifecycle industrial and medical applications where field failure rates must remain below 100 FIT. It shares identical timing, pinout, and electrical specs with the non-L variant but undergoes additional qualification testing per JESD47.
Can CY7C109BNL-15VC operate at 3.3V?
No. The device is specified only for 5V ±10% (4.5V to 5.5V) operation. Attempting 3.3V supply violates Absolute Maximum Ratings and will result in undefined behavior, including failure to retain data or meet tAA specification. For 3.3V systems, consider Infineon's newer PSRAM or LPDDR alternatives with compatible density and interface.
Is the SOJ-32 package of CY7C109BNL-15VC RoHS-compliant?
Yes. The "VC" suffix denotes lead-free (Pb-free) finish per EU RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 3 marking. The SOJ body uses matte tin plating over copper leadframe, with no exemption claimed for lead content. Certificate of Compliance is available upon request with batch traceability.
Does CY7C109BNL-15VC support asynchronous burst reads?
No. It is a classic asynchronous SRAM with no internal burst counter or sequential address generation. All reads require full 17-bit address assertion on A0–A16 for each access. Burst capability would require external logic or a different memory architecture such as ZBT SRAM or DDR SDRAM.
CY7C109BNL-15VC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 32-BSOJ (0.400", 10.16mm 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
CY7C109BNL-15VC FAQ
1.How can I place an order for CY7C109BNL-15VC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C109BNL-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 CY7C109BNL-15VC reliable?
The price and inventory of CY7C109BNL-15VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C109BNL-15VC is usually 5 days.
3.What payment methods are accepted for CY7C109BNL-15VC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C109BNL-15VC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C109BNL-15VC?
CY7C109BNL-15VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C109BNL-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 CY7C109BNL-15VC?
For technical support, including CY7C109BNL-15VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C109BNL-15VC requirements.
6.How does Aetrix verify that CY7C109BNL-15VC is sourced from the original manufacturer or authorized distributors?
All CY7C109BNL-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 CY7C109BNL-15VC meets industry standards.
7.What is the process for return or replacement of CY7C109BNL-15VC?
All CY7C109BNL-15VC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C109BNL-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 CY7C109BNL-15VC part is unused and in its original packaging.
Return procedure for CY7C109BNL-15VC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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