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Infineon Technologies CY7C1021DV33-10BVXIT
- Part No.:
- CY7C1021DV33-10BVXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 48-VFBGA
- Datasheet:
-
CY7C1021DV33-10BVXIT.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 48VFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,961
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Product details
Overview
CY7C1021DV33-10BVXIT from Cypress Semiconductor is a 1-Mbit (64 K × 16) high-speed CMOS static RAM with 10 ns access time, 3.3 V supply, industrial/automotive-A temperature range (–40 °C to +85 °C), and automatic CE-controlled power-down. It supports independent byte-wide writes via BHE/BLE and operates in SOJ, TSOP II, or VFBGA packages for embedded memory buffering in real-time control systems.
For engineers reviewing the CY7C1021DV33-10BVXIT datasheet, CY7C1021DV33-10BVXIT pinout, CY7C1021DV33-10BVXIT application, or CY7C1021DV33-10BVXIT equivalent, key selection criteria include tAA = 10 ns read timing, ISB2 = 3 mA CMOS standby current, dual-byte enable architecture, and Pb-free 44-pin SOJ package compatibility with legacy CY7C1021CV33 designs.
Technical Context
The device implements a synchronous, address-decoded 65,536 × 16-bit SRAM array with separate row/column decoders and sense amplifiers. Its logic block includes TTL/CMOS-compatible inputs, high-impedance tri-state outputs, and automatic power-down triggered by CE HIGH under CMOS input thresholds (VCC – 0.3 V).
Read and write operations are controlled by CE, OE, WE, BHE, and BLE with defined timing windows: tDOE = 5 ns, tSD = 5 ns, tHZOE = 5 ns, and tPD = 10 ns. Byte-select functionality enables partial-word writes without bus contention, supporting 8-bit microcontroller interfaces alongside full 16-bit data paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Mbit (64 K × 16) - supports 16-bit parallel data bus with 16 address lines (A0–A15) |
| Access time (tAA) | 10 ns - enables direct interface with 100 MHz microcontrollers without wait states |
| VCC supply | 3.3 V ± 0.3 V - compatible with modern low-voltage logic families and mixed-signal SoC domains |
| Standby current (ISB2) | 3 mA - ensures ultra-low power retention during system sleep modes in automotive ECUs |
| Data retention voltage | 2.0 V - maintains stored data during brown-out conditions without external backup power |
| Operating temperature | –40 °C to +85 °C - qualified for industrial automation and automotive-A grade applications |
| Package | 44-pin 400-mil SOJ - surface-mount compatible with standard reflow profiles and legacy board layouts |
Pinout & Package
Package: 44-pin 400-mil wide molded SOJ (Small Outline J-Lead), Pb-free, JEDEC-compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address inputs | 16-bit address bus selects one of 65,536 memory locations |
| I/O0–I/O7 | Data bus (low byte) | Bi-directional 8-bit path enabled when BLE = LOW during read/write |
| I/O8–I/O15 | Data bus (high byte) | Bi-directional 8-bit path enabled when BHE = LOW during read/write |
| CE | Chip Enable | Active LOW global enable; forces automatic power-down when HIGH |
| WE | Write Enable | Active LOW controls write cycle initiation; must be HIGH for reads |
| OE | Output Enable | Active LOW enables output drivers; HIGH places I/O pins in high-Z state |
| BLE | Byte Low Enable | Active LOW enables I/O0–I/O7 for partial-word access |
| BHE | Byte High Enable | Active LOW enables I/O8–I/O15 for partial-word access |
| VCC | Power supply | 3.3 V core supply; two dedicated pins reduce IR drop and noise coupling |
| VSS | Ground | Two ground pins provide return path separation for I/O and core logic |
Key Features
| Feature | Design Value |
|---|---|
| Independent byte write control | Separate BHE/BLE inputs allow simultaneous or selective 8-bit writes without disturbing adjacent bytes |
| Automatic CE power-down | Reduces ICC to 3 mA (ISB2) when CE is deasserted, eliminating need for external power gating |
| 2.0 V data retention | Maintains valid memory contents during undervoltage events down to 2.0 V, critical for fail-safe logging |
| Pb-free SOJ packaging | 44-pin 400-mil SOJ meets RoHS requirements and provides mechanical robustness for vibration-prone environments |
| Pin-and function-compatible with CY7C1021CV33 | Enables drop-in replacement in existing designs without PCB or firmware changes |
Applications
| Industrial PLC Data Buffering | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Real-time I/O scan and register mapping in programmable logic controllers requiring deterministic memory access. IC Role / Device Role / Timing Role: High-speed parallel SRAM providing zero-wait-state scratchpad for ladder logic execution and sensor history storage. Use Value: 10 ns tAA ensures synchronization with 100 MHz bus clocks; ISB2 = 3 mA extends battery-backed runtime during main power loss. |
Use Scenario: Storing calibrated fuel injection maps and real-time sensor fusion buffers in engine management systems. IC Role / Device Role / Timing Role: Nonvolatile-retentive SRAM holding critical calibration tables accessible during cold cranking at –40 °C. Use Value: 2.0 V data retention preserves map integrity during 12 V battery sag; –40 °C to +85 °C rating matches under-hood thermal envelope. |
| Medical Infusion Pump Controller | Avionics Display Frame Buffer |
Use Scenario: Temporary storage of dosage history, alarm logs, and user interface state in Class II medical devices. IC Role / Device Role / Timing Role: Safety-critical SRAM buffer with guaranteed data integrity across power cycles and EMI events. Use Value: Dual-byte enable (BHE/BLE) isolates alarm log writes from UI refresh operations; Pb-free SOJ meets ISO 13485 material compliance. |
Use Scenario: Pixel line buffering for high-resolution cockpit displays requiring glitch-free video updates. IC Role / Device Role / Timing Role: Low-latency frame buffer interfacing directly with display controller's 16-bit parallel bus. Use Value: tDOE = 5 ns and tHZOE = 5 ns minimize output transition jitter; 44-pin SOJ simplifies routing on constrained avionics PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV102416-10TLI | 10 ns access, 3.3 V, but only ISB = 5 mA (vs. 3 mA); no BHE/BLE - uses single OE/WE | Lacks byte-select capability; requires external logic for partial-word writes | Select when byte masking is unnecessary and higher standby current is acceptable |
| AS6C1008-10TIN | 10 ns access, 3.3 V, ISB = 2 mA, but only 512 K × 16 organization (512 KB vs. 64 KB) | Half the memory depth; different pinout - not pin-compatible | Choose for lower standby power where reduced capacity suffices and layout redesign is feasible |
Compared with IS61LV102416-10TLI and AS6C1008-10TIN, CY7C1021DV33-10BVXIT uniquely delivers 64 K × 16 density with true dual-byte enable, 3 mA standby, and pin compatibility to CY7C1021CV33-making it optimal for retrofitting legacy industrial controllers without firmware or layout changes.
Availability
CY7C1021DV33-10BVXIT is available at Aetrix Electronics and suitable for industrial PLC data buffering, automotive ECU calibration storage, and medical infusion pump logging requiring stable component supply across extended product lifecycles.
Supply support for CY7C1021DV33-10BVXIT 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 solutions for industrial, automotive, and IoT applications, with headquarters in San Jose, CA.
CY7C1021DV33 belongs to Cypress's legacy parallel SRAM product line, engineered specifically for deterministic, low-latency data buffering in safety-critical real-time systems where predictability outweighs density scaling.
FAQ
What is the maximum clock frequency supported for read cycles?
The CY7C1021DV33-10BVXIT does not use a clock signal; it is an asynchronous SRAM. Its maximum effective interface speed is determined by tRC = 10 ns, enabling up to 100 MHz burst operation when paired with a controller that meets setup/hold timing. No internal clock circuitry exists - all timing is event-driven by CE, OE, and address transitions.
Can BHE and BLE be asserted simultaneously for full 16-bit access?
Yes - asserting both BHE and BLE LOW enables concurrent read or write of all 16 I/O lines (I/O0–I/O15). This configuration functions identically to standard 16-bit SRAM operation and is fully supported per the truth table in the datasheet. The device treats combined assertion as a full-word access mode.
Is the 44-pin SOJ package RoHS-compliant and lead-free?
Yes - the "VXIT" suffix denotes a Pb-free, halogen-free, RoHS-compliant 44-pin SOJ package per Cypress's ordering nomenclature. The device meets JEDEC J-STD-020 moisture sensitivity level 3 and is qualified for standard SnPb and lead-free reflow profiles.
How does automatic power-down behave during partial byte access?
Automatic power-down activates only when CE is HIGH - regardless of BHE/BLE state. During partial byte access (e.g., BLE = LOW, BHE = HIGH), the device remains fully active if CE is LOW. Power-down is solely CE-gated and unaffected by byte-enable signals or OE/WE status.
CY7C1021DV33-10BVXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 48-VFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 10ns
- Access Time:
- 10 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-VFBGA (6x8)
CY7C1021DV33-10BVXIT FAQ
1.How can I place an order for CY7C1021DV33-10BVXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1021DV33-10BVXIT 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 CY7C1021DV33-10BVXIT reliable?
The price and inventory of CY7C1021DV33-10BVXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1021DV33-10BVXIT is usually 5 days.
3.What payment methods are accepted for CY7C1021DV33-10BVXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1021DV33-10BVXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1021DV33-10BVXIT?
CY7C1021DV33-10BVXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1021DV33-10BVXIT 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 CY7C1021DV33-10BVXIT?
For technical support, including CY7C1021DV33-10BVXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1021DV33-10BVXIT requirements.
6.How does Aetrix verify that CY7C1021DV33-10BVXIT is sourced from the original manufacturer or authorized distributors?
All CY7C1021DV33-10BVXIT 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 CY7C1021DV33-10BVXIT meets industry standards.
7.What is the process for return or replacement of CY7C1021DV33-10BVXIT?
All CY7C1021DV33-10BVXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1021DV33-10BVXIT, 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 CY7C1021DV33-10BVXIT part is unused and in its original packaging.
Return procedure for CY7C1021DV33-10BVXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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