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Infineon Technologies CY7C1021CV33-12ZXI
- Part No.:
- CY7C1021CV33-12ZXI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1021CV33-12ZXI.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:4,665
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Product details
Overview
CY7C1021CV33-12ZXI from Cypress Semiconductor is a 1-Mbit (64K × 16) high-speed CMOS static RAM with 12 ns access time, 3.3 V supply, and industrial temperature range (–40°C to +85°C). It features independent byte write control (BHE/BLE), automatic CE-controlled power-down (10 mA standby), and SOJ-44 package. Used in real-time industrial controllers requiring deterministic low-latency memory access.
For engineers reviewing the CY7C1021CV33-12ZXI datasheet, CY7C1021CV33-12ZXI pinout, CY7C1021CV33-12ZXI application, or CY7C1021CV33-12ZXI equivalent, key selection criteria include tAA = 12 ns timing, dual-byte enable architecture, 325 mW max active power, and compatibility with legacy CY7C1021BV33 designs.
Technical Context
This SRAM implements a synchronous, non-volatile-independent read/write interface with TTL-compatible inputs and CMOS outputs. Address decoding uses full 16-bit A0–A15 addressing for 65,536 locations, while bidirectional IO1–IO16 lines support byte-selectable writes via active-low BHE (IO9–IO16) and BLE (IO1–IO8).
Power management relies on CE-driven automatic transition between active (90 mA max ICC) and standby (10 mA ISB2) states. Output enable (OE) and write enable (WE) are fully orthogonal controls: OE governs IO direction/tri-state, while WE determines read vs. write mode when CE is asserted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Mbit (64K × 16) - supports 16-bit data bus systems without external multiplexing |
| Access Time (tAA) | 12 ns - guarantees deterministic read latency for 83 MHz bus timing budgets |
| VCC Supply | 3.3 V ±10% - compatible with modern low-voltage logic families and LDO-regulated rails |
| Operating Temp | –40°C to +85°C - qualified for industrial control, motor drives, and factory automation |
| Standby Current | 10 mA (ISB2, CMOS inputs) - enables energy-efficient sleep modes in always-on embedded systems |
| Active Power | 325 mW max - limits thermal load in dense PCB layouts with multiple SRAMs |
| Package | 44-pin SOJ (400 mil) - surface-mount compatible with standard reflow profiles and IPC-7351 footprints |
Pinout & Package
44-pin SOJ (400 mil) package with gull-wing leads, JEDEC MS-024AC compliant. Pin 1 index located at top-left corner when notch faces upward.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Input | 16-bit address bus - selects one of 65,536 memory words; no internal latching |
| IO1–IO8 | Input/Output | Lower byte data bus - driven during read or written during BLE-active cycles |
| IO9–IO16 | Input/Output | Upper byte data bus - driven during read or written during BHE-active cycles |
| CE | Input (Active LOW) | Chip select - enables internal circuitry; triggers automatic power-down when HIGH |
| WE | Input (Active LOW) | Write enable - initiates write cycle when CE and WE both LOW; OE must be HIGH |
| OE | Input (Active LOW) | Output enable - controls tri-state of IO pins; does not affect write operations |
| BLE | Input (Active LOW) | Byte low enable - gates IO1–IO8 during write/read; allows partial-word updates |
| BHE | Input (Active LOW) | Byte high enable - gates IO9–IO16 during write/read; enables 8-bit granularity |
| VCC | Power | +3.3 V supply - two dedicated pins (pins 11, 33) reduce IR drop and noise coupling |
| VSS | Ground | System ground - two dedicated pins (pins 12, 34) improve return path integrity |
Key Features
| Feature | Design Value |
|---|---|
| Independent Byte Write Control | Separate BHE/BLE signals allow simultaneous or selective update of upper/lower 8-bit bytes without read-modify-write overhead |
| Automatic CE Power-Down | Reduces ICC to 10 mA (ISB2) when CE is HIGH - eliminates need for external power-gating logic |
| High-Speed 12 ns Access | tAA = 12 ns at –40°C to +85°C ensures reliable operation in 83 MHz synchronous bus environments |
| Low-Impedance Bidirectional I/O | IO pins drive ±8 mA (IOL/IOH) with VOL ≤ 0.4 V and VOH ≥ 2.4 V - interfaces directly with 3.3 V LVTTL and LVCMOS |
| Pb-Free Packaging Option | SOJ-44 package available in RoHS-compliant finish - meets industrial environmental compliance requirements |
Applications
| Industrial PLC Data Buffer | Automotive Engine Control Unit (ECU) |
|---|---|
|
Use Scenario: Real-time I/O mapping and register shadowing in programmable logic controllers with deterministic scan cycles. IC Role / Device Role / Timing Role: High-reliability scratchpad memory holding process variables, status flags, and configuration registers accessed every 1–10 ms. Use Value: 12 ns tAA ensures memory response fits within tight 100 ns CPU wait-state windows; dual-byte write avoids corruption during concurrent module updates. |
Use Scenario: Storing transient sensor calibration offsets and actuator command buffers in engine management systems operating at 125°C junction. IC Role / Device Role / Timing Role: Temperature-hardened SRAM retaining critical runtime data during cold cranking and hot soak conditions. Use Value: Qualified for –40°C to +85°C ambient with 10 mA ISB2 enables low-power keep-alive operation during vehicle sleep mode. |
| Medical Imaging Frame Buffer | Test & Measurement Equipment FIFO |
|
Use Scenario: Temporary storage of digitized X-ray or ultrasound frames before compression and transfer to host processor. IC Role / Device Role / Timing Role: Burst-mode memory supporting parallel 16-bit pixel data streams at >20 MB/s sustained throughput. Use Value: 64K × 16 organization matches common 1024×64 pixel line buffers; SOJ package withstands repeated thermal cycling in diagnostic hardware. |
Use Scenario: Capturing high-speed analog-to-digital samples in oscilloscopes and logic analyzers with trigger-based capture windows. IC Role / Device Role / Timing Role: Low-latency buffer enabling precise timestamp alignment between acquisition clock and memory write strobes. Use Value: tHZCE = 6 ns and tLZCE = 3 ns minimize dead time between successive sample bursts; CE-controlled power-down reduces idle current between captures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISSI IS61LV102416-12MLI | Same density, speed, and voltage; 44-pin TSOP II (not SOJ); 15 mA ISB2 | Lacks automotive qualification; rated only for industrial temp (–40°C to +85°C) | Preferred for cost-sensitive industrial boards where TSOP II footprint is acceptable and automotive qualification is unnecessary |
| ON Semiconductor MC68HC16RAM1M16-12 | 12 ns access, but 5 V tolerant inputs; higher ICC (120 mA); 44-pin SOJ | Designed for mixed 3.3 V/5 V systems; not RoHS-compliant in standard variant | Only suitable when interfacing with legacy 5 V peripherals or where input overvoltage margin >1 V is required |
Compared with IS61LV102416-12MLI and MC68HC16RAM1M16-12, CY7C1021CV33-12ZXI uniquely combines SOJ-44 packaging, automotive-grade qualification, and 10 mA ISB2 - making it optimal for space-constrained, thermally demanding industrial controllers requiring long-term supply stability.
Availability
CY7C1021CV33-12ZXI is available at Aetrix Electronics and suitable for industrial PLCs, automotive ECUs, medical imaging subsystems, and test equipment requiring stable component supply across extended product lifecycles.
Supply support for CY7C1021CV33-12ZXI 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 fabless semiconductor company specializing in memory, microcontrollers, and connectivity solutions for industrial, automotive, and consumer markets.
The CY7C1021CV33 belongs to Cypress's high-speed asynchronous SRAM product line, engineered for deterministic timing, low-power standby, and robust operation in mission-critical embedded systems.
FAQ
What is the maximum clock frequency supported by CY7C1021CV33-12ZXI?
CY7C1021CV33-12ZXI is an asynchronous SRAM and does not use a clock signal. Its maximum operational speed is defined by access time (tAA = 12 ns) and cycle time (tRC = 12 ns), supporting effective bus rates up to 83 MHz in systems with zero wait states. Timing depends solely on CE, OE, and WE control signal sequencing.
Can CY7C1021CV33-12ZXI operate with 2.5 V supply?
No. The device is specified only for 3.3 V ±10% (2.97 V to 3.63 V). Operation outside this range violates Absolute Maximum Ratings and invalidates all AC/DC specifications. VCC < 2.97 V may cause data retention loss or timing violations; VCC > 3.63 V risks permanent damage.
Is CY7C1021CV33-12ZXI pin-compatible with CY7C1021BV33?
Yes - CY7C1021CV33-12ZXI is functionally and pin-compatible with CY7C1021BV33 across all packages, including SOJ-44. Both share identical pinout, byte-enable architecture, and control signal behavior. The 'V33' suffix denotes 3.3 V operation, and the 'C' revision adds improved power-down characteristics.
Does CY7C1021CV33-12ZXI support battery backup operation?
No. This SRAM lacks built-in battery-switching circuitry or VBAT pin. Data retention requires continuous VCC supply. For battery-backed applications, external power-fail detection and hold-up capacitors or discrete backup controllers must be implemented per AN1064 guidelines.
CY7C1021CV33-12ZXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tray
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
CY7C1021CV33-12ZXI FAQ
1.How can I place an order for CY7C1021CV33-12ZXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1021CV33-12ZXI 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 CY7C1021CV33-12ZXI reliable?
The price and inventory of CY7C1021CV33-12ZXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1021CV33-12ZXI is usually 5 days.
3.What payment methods are accepted for CY7C1021CV33-12ZXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1021CV33-12ZXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1021CV33-12ZXI?
CY7C1021CV33-12ZXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1021CV33-12ZXI 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 CY7C1021CV33-12ZXI?
For technical support, including CY7C1021CV33-12ZXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1021CV33-12ZXI requirements.
6.How does Aetrix verify that CY7C1021CV33-12ZXI is sourced from the original manufacturer or authorized distributors?
All CY7C1021CV33-12ZXI 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 CY7C1021CV33-12ZXI meets industry standards.
7.What is the process for return or replacement of CY7C1021CV33-12ZXI?
All CY7C1021CV33-12ZXI units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1021CV33-12ZXI, 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 CY7C1021CV33-12ZXI part is unused and in its original packaging.
Return procedure for CY7C1021CV33-12ZXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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