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Infineon Technologies CY7C1021CV33-12VXC
- Part No.:
- CY7C1021CV33-12VXC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1021CV33-12VXC.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 44SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,852
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Product details
Overview
CY7C1021CV33-12VXC from Cypress Semiconductor is a 1-Mbit (64K × 16) high-speed CMOS static RAM with 12 ns maximum access time, 3.3 V supply, and automatic CE-controlled power-down mode. It supports independent byte write via BHE/BLE pins, operates across –40°C to +85°C (Industrial grade), and is packaged in 44-pin SOJ. Used in real-time industrial controllers requiring deterministic memory access and low standby power.
For engineers reviewing the CY7C1021CV33-12VXC datasheet, CY7C1021CV33-12VXC pinout, CY7C1021CV33-12VXC application, or CY7C1021CV33-12VXC equivalent, key selection criteria include tAA = 12 ns read timing, ISB2 = 5 mA CMOS standby current, dual-byte enable architecture, and SOJ package compatibility with legacy SRAM footprints.
Technical Context
The CY7C1021CV33-12VXC implements a fully decoded 64K × 16 asynchronous SRAM array with separate address latching and bidirectional I/O drivers. Its control logic uses active-low CE, WE, OE, BHE, and BLE signals to manage chip select, write/read direction, and upper/lower byte masking - enabling partial-word writes without external logic.
It features two distinct power-down modes: ISB1 (TTL-compatible inputs, 15 mA) and ISB2 (CMOS-compatible inputs, 5 mA), triggered automatically when CE is deasserted. Output drive strength is specified at VOH ≥ 2.4 V (IOH = –4 mA) and VOL ≤ 0.4 V (IOL = 8 mA), ensuring robust noise margin in 3.3 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 16-bit (1,048,576 bits); enables 16-bit data bus interfacing without width expansion. |
| Access Time (tAA) | 12 ns max at 3.3 V, –40°C to +85°C; guarantees deterministic read latency for real-time control loops. |
| Supply Voltage | 3.3 V ±10%; compatible with standard LVTTL and LVCMOS I/O domains. |
| Standby Current (ISB2) | 5 mA max (CMOS input mode); reduces system-level idle power in battery-backed or energy-sensitive applications. |
| Operating Temperature | –40°C to +85°C (Industrial grade); validated for deployment in factory automation and motor drive environments. |
| Output Drive | VOH ≥ 2.4 V @ –4 mA, VOL ≤ 0.4 V @ 8 mA; meets 3.3 V TTL/LVCMOS interface thresholds with margin. |
| Input Capacitance | 8 pF max; minimizes signal integrity impact on high-speed address/data buses. |
Pinout & Package
Package: 44-pin 400-mil SOJ (Small Outline J-Lead), JEDEC MS-026AC compliant. Lead finish: Pb-free (RoHS-compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Input | 16-bit address bus; selects one of 65,536 memory locations; TTL/CMOS compatible. |
| IO1–IO8 / IO9–IO16 | Bidirectional Data I/O | Lower/upper byte data paths; support independent write masking via BLE/BHE control. |
| CE | Chip Enable (Active LOW) | Primary chip-select; enables automatic power-down when HIGH (ISB2 = 5 mA). |
| WE | Write Enable (Active LOW) | Controls write initiation; must be LOW with CE LOW and valid BHE/BLE to store data. |
| OE | Output Enable (Active LOW) | Enables output drivers during reads; tri-states IOs when HIGH or during writes. |
| BHE, BLE | Byte Write Enable (Active LOW) | BHE controls IO9–IO16; BLE controls IO1–IO8; allows 8-bit partial writes without read-modify-write. |
| VCC | Power Supply | Two dedicated 3.3 V supply pins (pins 11 & 33); reduces IR drop and improves noise immunity. |
| VSS | Ground | Two dedicated ground pins (pins 12 & 34); enhances return path integrity for high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Independent Byte Write Control | Separate BHE/BLE pins enable true 8-bit write granularity - eliminates need for external byte-lane gating logic. |
| Automatic CE Power-Down | Reduces ICC to 5 mA (ISB2) when CE is HIGH; no external sleep controller required for low-power states. |
| High-Speed 12 ns Access | tAA = 12 ns guaranteed over full Industrial temperature range; supports 83 MHz bus clocking in synchronous interfaces. |
| Dual Supply/Ground Pins | Two VCC and two VSS pins minimize voltage droop and ground bounce during simultaneous 16-bit I/O transitions. |
| Pb-Free SOJ Packaging | 44-pin 400-mil SOJ with RoHS-compliant lead finish; ensures drop-in replacement in legacy industrial PCBs. |
Applications
| Industrial PLC Memory Buffer | Automotive Engine Control Unit (ECU) |
|---|---|
|
Use Scenario: Stores real-time sensor fusion results and actuator command history in programmable logic controllers with deterministic scan cycles. IC Role / Device Role / Timing Role: Asynchronous 16-bit SRAM buffer providing zero-wait-state access for microcontroller DMA transfers. Use Value: 12 ns tAA ensures sub-100 ns memory response within 100 µs PLC scan windows; ISB2 = 5 mA extends uptime in fanless enclosures. |
Use Scenario: Holds calibration tables and transient fault logs in engine management systems operating under under-hood thermal stress. IC Role / Device Role / Timing Role: Nonvolatile-supporting volatile memory for fast lookup tables accessed by 32-bit RISC cores during combustion timing critical paths. Use Value: –40°C to +85°C rating and 5 mA standby current maintain reliability across thermal cycling; SOJ package resists mechanical shock. |
| Medical Imaging Frame Buffer | Avionics Display Controller Cache |
|
Use Scenario: Temporarily stores uncompressed grayscale image frames from X-ray or ultrasound sensors before compression and transmission. IC Role / Device Role / Timing Role: High-bandwidth 16-bit parallel memory interface synchronized to pixel clock domain via external glue logic. Use Value: Dual-byte write capability allows efficient 8-bit pixel packing; 8 pF input capacitance preserves signal integrity at 25 MHz pixel rates. |
Use Scenario: Caches GUI assets and flight parameter overlays in certified cockpit display units where EMI resilience and long-term availability are mandatory. IC Role / Device Role / Timing Role: Deterministic-access scratchpad memory for ARINC-661-compliant graphics processors handling safety-critical rendering pipelines. Use Value: Pb-free SOJ packaging meets aerospace RoHS requirements; automatic power-down reduces heat load in sealed avionics chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed parallel SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV102416-12ML | 12 ns access, same 64K × 16 organization, but uses 44-pin TSOP II (not SOJ); lower ISB = 3 mA. | TSOP II footprint requires PCB redesign; better suited for space-constrained surface-mount layouts. | Select if board layout allows TSOP II and ultra-low standby current is prioritized over mechanical compatibility. |
| AS6C1008-12ZIN | 12 ns access, 128K × 8 organization; single-byte interface; SOJ-44 pinout matches CY7C1021CV33-12VXC physically but differs electrically. | Requires data bus width adaptation (16-bit ↔ 8-bit); lacks BHE/BLE - needs external byte-enable logic. | Choose only when migrating from 8-bit systems and memory density >1 Mbit is acceptable. |
Compared with IS61LV102416-12ML and AS6C1008-12ZIN, the CY7C1021CV33-12VXC uniquely delivers SOJ-44 pin compatibility, true 16-bit dual-byte write, and industrial-grade thermal validation - making it optimal for drop-in upgrades in legacy industrial hardware.
Availability
CY7C1021CV33-12VXC is available at Aetrix Electronics and suitable for industrial PLCs, automotive ECUs, medical imaging subsystems, and avionics display controllers requiring stable component supply and long-term obsolescence management.
Supply support for CY7C1021CV33-12VXC 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 communications infrastructure markets.
The CY7C1021CV33 series targets applications demanding deterministic SRAM performance, low-power standby operation, and long-lifecycle availability - especially in mission-critical embedded systems where pin- and function-compatibility with prior generations is essential.
FAQ
Is CY7C1021CV33-12VXC pin-compatible with CY7C1021BV33?
Yes - the CY7C1021CV33-12VXC is pin- and function-compatible with CY7C1021BV33, including identical SOJ-44 pinout, address/data/control signal mapping, and byte-enable behavior. No PCB changes are required for migration, though voltage tolerance and timing specs differ slightly.
What is the maximum operating current during active read cycles?
The maximum ICC during active operation is 90 mA at 3.3 V, –40°C to +85°C, measured at fMAX = 1/tRC (83.3 MHz equivalent). This value is specified in the Electrical Characteristics table under "ICC VCC Operating Supply Current" for the -12 speed grade.
Does CY7C1021CV33-12VXC support 2.5 V operation?
No - the device is rated exclusively for 3.3 V ±10% (2.97 V to 3.63 V). Operation outside this range violates Absolute Maximum Ratings and may cause data corruption or accelerated wear. It is not backward-compatible with 2.5 V or 5 V systems.
How does automatic power-down behave when OE is HIGH but CE is LOW?
Power-down is triggered solely by CE being HIGH; OE state has no effect on ISB. When CE is LOW and OE is HIGH, outputs go high-impedance but the core remains powered - ICC stays at active-level current (~90 mA), not standby.
CY7C1021CV33-12VXC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-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:
- 64K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 12ns
- Access Time:
- 12 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-SOJ
CY7C1021CV33-12VXC FAQ
1.How can I place an order for CY7C1021CV33-12VXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1021CV33-12VXC 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 CY7C1021CV33-12VXC reliable?
The price and inventory of CY7C1021CV33-12VXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1021CV33-12VXC is usually 5 days.
3.What payment methods are accepted for CY7C1021CV33-12VXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1021CV33-12VXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1021CV33-12VXC?
CY7C1021CV33-12VXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1021CV33-12VXC 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 CY7C1021CV33-12VXC?
For technical support, including CY7C1021CV33-12VXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1021CV33-12VXC requirements.
6.How does Aetrix verify that CY7C1021CV33-12VXC is sourced from the original manufacturer or authorized distributors?
All CY7C1021CV33-12VXC 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 CY7C1021CV33-12VXC meets industry standards.
7.What is the process for return or replacement of CY7C1021CV33-12VXC?
All CY7C1021CV33-12VXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1021CV33-12VXC, 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 CY7C1021CV33-12VXC part is unused and in its original packaging.
Return procedure for CY7C1021CV33-12VXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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