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Infineon Technologies CY7C1021BNL-15ZXI
- Part No.:
- CY7C1021BNL-15ZXI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1021BNL-15ZXI.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:2,731
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Product details
Overview
CY7C1021BNL-15ZXI from Cypress Semiconductor is a 1-Mbit (64 K × 16) high-speed CMOS static RAM with 15 ns access time, industrial temperature range (–40 °C to +85 °C), 5 V ±10% supply, and automatic CE-controlled power-down mode. It supports independent byte-wide writes via BHE/ BLE control and operates in 44-pin TSOP II package for embedded memory buffering in real-time control systems.
For engineers reviewing the CY7C1021BNL-15ZXI datasheet, CY7C1021BNL-15ZXI pinout, CY7C1021BNL-15ZXI application, or CY7C1021BNL-15ZXI equivalent, key selection criteria include tAA = 15 ns read timing, ISB2 ≤ 10 mA standby current (CMOS inputs), dual-byte enable architecture, and automotive-grade thermal resistance (θJA = 76.89 °C/W in TSOP II).
Technical Context
The CY7C1021BNL-15ZXI implements a synchronous, non-volatile-independent SRAM array organized as 65,536 × 16 bits with fully decoded address logic (A0–A15). Its read/write control relies on three active-low enables: CE (chip select), OE (output enable), and WE (write enable), with separate BHE/BLE signals enabling concurrent or isolated access to upper (I/O9–I/O16) and lower (I/O1–I/O8) data bytes.
Power management is handled through automatic CE-driven power-down: when CE is HIGH, ICC drops to ≤10 mA (ISB2, CMOS input condition), and internal circuitry enters low-power state without external sequencing. All I/O pins enter high-impedance state during deselect, write, or disabled byte enable - ensuring clean bus sharing in multi-device memory subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Mbit (64 K × 16); provides 128 KB of parallel-access data storage for firmware buffers or real-time data logging. |
| tAA (access time) | 15 ns max; enables direct interface with 66 MHz microcontrollers without wait states. |
| VCC supply | 5 V ±10%; compatible with legacy 5 V logic families and industrial power rails. |
| ISB2 (standby current) | ≤10 mA (CMOS inputs); reduces system idle power in battery-backed or energy-sensitive applications. |
| Operating temperature | –40 °C to +85 °C; qualified for industrial control, motor drives, and factory automation environments. |
| Package | 44-pin TSOP II (10.16 mm × 20.95 mm); surface-mount compatible with standard reflow profiles and automated assembly. |
| Byte enable | Independent BHE/BLE control; allows simultaneous or selective 8-bit writes without masking logic or extra glue logic. |
Pinout & Package
Package: 44-pin Thin Small Outline Package Type II (TSOP II), 400-mil body width, lead pitch 0.8 mm, JEDEC MO-141AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address inputs | 16-bit address bus; selects one of 65,536 memory locations; TTL/CMOS compatible. |
| I/O1–I/O8 | Lower data I/O | Bidirectional 8-bit data path controlled by BLE; tristated when BLE or CE is HIGH. |
| I/O9–I/O16 | Upper data I/O | Bidirectional 8-bit data path controlled by BHE; independent of lower byte for mixed-width transfers. |
| CE | Chip enable | Active-low global select; disables all outputs and triggers automatic power-down when HIGH. |
| WE | Write enable | Active-low write strobe; initiates write cycle only when CE and corresponding byte enable are also LOW. |
| OE | Output enable | Active-low output gate; controls direction of I/O pins; must be LOW for read operations. |
| BLE / BHE | Byte enable | Active-low controls for lower/upper data bytes; enables true 8-bit granularity in 16-bit bus systems. |
| VCC (pins 11, 33) | Power supply | +5 V ±10% main supply; decoupling required at both pins per datasheet layout guidelines. |
| VSS (pins 12, 34) | Ground | System ground reference; dual GND pins reduce ground bounce in high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic CE power-down | Reduces ICC to ≤10 mA without external control logic or sleep-mode software overhead. |
| Dual independent byte enables | Eliminates need for external byte-mask logic in 8-bit peripheral interfacing or partial-word updates. |
| 15 ns tAA with 5 V supply | Supports direct connection to legacy 66 MHz CPUs (e.g., Intel 80486, Motorola 68040) without wait-state insertion. |
| High noise immunity | VIH ≥ 2.2 V and VIL ≤ 0.8 V ensure robust operation in electrically noisy industrial environments. |
| Pb-free and RoHS-compliant option | ZXI suffix denotes lead-free TSOP II packaging meeting EU Directive 2011/65/EU requirements. |
Applications
| Industrial PLC Data Buffering | Automotive Engine Control Unit (ECU) Scratchpad |
|---|---|
Use Scenario: Storing transient sensor fusion results and actuator command queues in programmable logic controllers with deterministic scan cycles. IC Role / Device Role / Timing Role: Parallel-access scratchpad RAM providing zero-wait-state read/write for real-time task scheduling and I/O image updates. Use Value: 15 ns tAA ensures full 64 KB buffer access within single 100 µs PLC scan window; dual-byte enables support modular I/O module addressing. | Use Scenario: Holding calibration tables, fault logs, and CAN message buffers in engine control units operating across –40 °C to +85 °C ambient. IC Role / Device Role / Timing Role: Non-volatile-independent fast RAM used for volatile runtime data storage between ECU power cycles. Use Value: Industrial temperature rating and ISB2 ≤10 mA enable reliable operation during cold cranking and extended key-off logging without auxiliary power. |
| Medical Imaging Frame Buffer | Avionics Display Controller Memory |
Use Scenario: Temporary storage of digitized X-ray or ultrasound frames before compression and transmission to PACS network. IC Role / Device Role / Timing Role: High-bandwidth parallel frame buffer interfaced directly to FPGA-based image acquisition engines. Use Value: 16-bit bus width and 15 ns access minimize pixel pipeline latency; TSOP II package supports compact multilayer PCB layout near imaging ASICs. | Use Scenario: Storing display list commands, glyph bitmaps, and overlay metadata in certified cockpit display units with strict EMI constraints. IC Role / Device Role / Timing Role: Deterministic-access memory for safety-critical graphics rendering pipelines requiring predictable worst-case timing. Use Value: Guaranteed tAA ≤15 ns and tHZOE ≤7 ns ensure pixel clock-aligned output stability; dual GND pins suppress switching noise in analog video domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AS6C1008-15TIN | Same 64 K × 16 organization, 15 ns tAA, but 3.3 V only; no 5 V support. | Requires level-shifting or redesign if replacing 5 V systems; unsuitable for legacy 5 V buses. | Select only when migrating to 3.3 V architecture and board space allows SOJ-to-TSOP footprint adaptation. |
| IS61LV1024-15KLI | 1 Mbit (128 K × 8) organization; 8-bit bus width; 15 ns tAA; 3.3 V supply. | Requires bus-width conversion (16-bit ↔ 8-bit) and may increase controller pin count or require multiplexing. | Preferable only when system already uses 8-bit data paths or when lower power (ISB = 1 µA) outweighs bandwidth loss. |
Compared with AS6C1008-15TIN and IS61LV1024-15KLI, CY7C1021BNL-15ZXI uniquely retains native 5 V compatibility, 16-bit bus width, and industrial-temperature-rated TSOP II packaging - making it irreplaceable in legacy industrial and automotive control designs where voltage, timing, and form factor are fixed constraints.
Availability
CY7C1021BNL-15ZXI is available at Aetrix Electronics and suitable for industrial PLC data buffering, automotive ECU scratchpad memory, and medical imaging frame buffering requiring stable component supply across extended product lifecycles.
Supply support for CY7C1021BNL-15ZXI 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 system-on-chip solutions for industrial, automotive, and consumer markets.
The CY7C1021BN series was designed specifically for high-reliability, low-latency parallel SRAM applications in deterministic real-time systems - emphasizing timing predictability, industrial temperature resilience, and drop-in replaceability in legacy 5 V designs.
FAQ
Is CY7C1021BNL-15ZXI pin-compatible with CY7C1021DV33-15ZXC?
No. CY7C1021BNL-15ZXI is a 5 V device in 44-pin TSOP II, while CY7C1021DV33-15ZXC is a 3.3 V variant with different DC characteristics, input thresholds, and thermal parameters. They share identical pinout but are not voltage-compatible or functionally interchangeable without level-shifting and layout revision.
Does CY7C1021BNL-15ZXI support asynchronous burst reads?
No. The CY7C1021BNL-15ZXI is a classic asynchronous SRAM with no internal burst counter or sequential address generation. Each read requires full address setup before CE/OE assertion; burst access must be implemented externally via controller logic or address sequencer.
What is the maximum capacitive load the I/O pins can drive reliably?
The device is characterized for 30 pF total load capacitance (including PCB trace, scope probe, and jig) under AC test conditions. Driving >30 pF may degrade tDOE (7 ns) and tHZOE (7 ns) timing margins; use series termination or buffer drivers for loads exceeding this value.
Can BHE and BLE be tied together for 16-bit operation?
Yes. Connecting BHE and BLE to the same control signal enables full 16-bit word access. However, doing so forfeits independent byte-write capability and increases write current slightly due to simultaneous activation of both I/O sections.
CY7C1021BNL-15ZXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-TSOP (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:
- 64K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 15ns
- Access Time:
- 15 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
CY7C1021BNL-15ZXI FAQ
1.How can I place an order for CY7C1021BNL-15ZXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1021BNL-15ZXI 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 CY7C1021BNL-15ZXI reliable?
The price and inventory of CY7C1021BNL-15ZXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1021BNL-15ZXI is usually 5 days.
3.What payment methods are accepted for CY7C1021BNL-15ZXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1021BNL-15ZXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1021BNL-15ZXI?
CY7C1021BNL-15ZXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1021BNL-15ZXI 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 CY7C1021BNL-15ZXI?
For technical support, including CY7C1021BNL-15ZXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1021BNL-15ZXI requirements.
6.How does Aetrix verify that CY7C1021BNL-15ZXI is sourced from the original manufacturer or authorized distributors?
All CY7C1021BNL-15ZXI 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 CY7C1021BNL-15ZXI meets industry standards.
7.What is the process for return or replacement of CY7C1021BNL-15ZXI?
All CY7C1021BNL-15ZXI units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1021BNL-15ZXI, 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 CY7C1021BNL-15ZXI part is unused and in its original packaging.
Return procedure for CY7C1021BNL-15ZXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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