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Infineon Technologies CY7C1021CV33-15VXCT
- Part No.:
- CY7C1021CV33-15VXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1021CV33-15VXCT.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 44SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:4,888
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Product details
Overview
CY7C1021CV33-15VXCT from Cypress Semiconductor is a 1-Mbit (64K × 16) high-speed CMOS static RAM with 15 ns maximum access time, 3.3 V supply, and automatic CE-controlled power-down mode. It supports independent byte write via BHE/BLE inputs and operates across industrial temperature range (–40°C to +85°C) in 44-pin TSOP II package. Used in real-time data buffering for industrial controllers and network packet memory.
For engineers reviewing the CY7C1021CV33-15VXCT datasheet, CY7C1021CV33-15VXCT pinout, CY7C1021CV33-15VXCT application, or CY7C1021CV33-15VXCT equivalent, key selection criteria include tAA = 15 ns read timing, dual-byte enable control, 5 mA CMOS standby current, and compatibility with legacy CY7C1021BV33 designs.
Technical Context
This SRAM implements a synchronous, non-volatile-access architecture with fully decoded 16-bit bidirectional I/O and address-mapped 64K-word space. Its CE-driven automatic power-down reduces ICC to 5 mA during deselection, while BHE/BLE logic enables selective 8-bit writes without affecting adjacent bytes.
Timing is defined by overlapping active-low control signals: CE and OE govern read cycles, CE and WE govern writes, and BHE/BLE gate data bus segments. All timing parameters-including tHZOE (7 ns), tPD (15 ns), and tDOE (7 ns)-are specified under 3.3 V ±10% and load conditions per JESD51-compliant test fixtures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Mbit (64K × 16); provides 128 KB of fast, non-refreshed data storage for embedded buffers. |
| Access Time (tAA) | 15 ns max; ensures deterministic read latency in real-time control loops with 66 MHz bus timing. |
| VCC Supply | 3.3 V ±10%; compatible with modern low-voltage digital systems and eliminates level-shifting overhead. |
| Standby Current (ISB2) | 5 mA max (CMOS inputs); enables ultra-low-power hold mode during processor sleep states. |
| Operating Temp | –40°C to +85°C; qualified for industrial automation and transportation electronics without derating. |
| Package | 44-pin TSOP II (400 mil); surface-mount footprint with validated thermal resistance (ΘJA = 76.92°C/W). |
| Byte Write Control | BHE/BLE active-low inputs; allows atomic 8-bit updates to upper/lower data words without read-modify-write. |
Pinout & Package
44-pin TSOP II (400 mil) package with standard JEDEC MO-147AC footprint; 32 signal pins, 4 power/ground, 8 NCs. Pin 1 is A5 (top-left corner, index mark adjacent).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Input | 16-bit address bus; fully decoded to select one of 65,536 memory locations. |
| IO1–IO8 / IO9–IO16 | Bi-directional I/O | Two independent 8-bit data buses; driven by BLE (IO1–IO8) and BHE (IO9–IO16). |
| CE | Active-low chip enable | Primary device select; forces automatic power-down when HIGH and disables all outputs. |
| WE | Active-low write enable | Controls write initiation; must be LOW with CE LOW and BHE/BLE LOW to store data. |
| OE | Active-low output enable | Enables tri-state output drivers; HIGH places IO pins in high-impedance state during reads or deselect. |
| BLE / BHE | Active-low byte enable | Selects lower (BLE) or upper (BHE) byte for write; enables partial-word updates without corruption. |
| VCC (Pins 11, 33) | Power supply | 3.3 V core supply; dual pins reduce IR drop and improve noise immunity on PCB. |
| VSS (Pins 12, 34) | Ground | Dual ground connections minimize ground bounce during simultaneous byte writes. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic CE Power-Down | Reduces ICC to 5 mA (CMOS) or 15 mA (TTL) when CE is HIGH-no external logic required. |
| Independent Byte Write | Separate BHE/BLE controls allow concurrent or isolated 8-bit writes to upper/lower data lanes. |
| High-Speed Timing | tRC = 15 ns and tPD = 15 ns support 66 MHz burst interfaces without wait states. |
| Pb-Free & RoHS Compliant | Meets EU Directive 2011/65/EU; available in both leaded and lead-free TSOP II variants. |
| Industrial Temperature Range | Guaranteed operation from –40°C to +85°C with no performance degradation or timing margin loss. |
Applications
| Industrial PLC Data Buffer | Network Packet Memory |
|---|---|
|
Use Scenario: Storing transient I/O scan data between CPU polling cycles in programmable logic controllers. IC Role / Device Role / Timing Role: High-reliability, non-refreshed SRAM buffer interfacing directly to 16-bit microcontroller data bus. Use Value: 15 ns tAA enables full-speed CPU access at 66 MHz; dual-byte write prevents race conditions during multi-register updates. |
Use Scenario: Temporary storage of Ethernet frame payloads in Layer 2 switch ASIC support circuitry. IC Role / Device Role / Timing Role: Low-latency packet buffer with deterministic read/write timing for cut-through forwarding. Use Value: tHZOE = 7 ns and tLZCE = 3 ns ensure rapid bus release between successive frame bursts. |
| Automotive ECU Log Memory | Medical Imaging Frame Buffer |
|
Use Scenario: Capturing diagnostic event logs during vehicle power cycling in engine control units. IC Role / Device Role / Timing Role: Non-volatile-access memory retaining last-boot status and fault codes without backup power. Use Value: –40°C to +125°C Automotive-E grade option (CY7C1021CV33-15VXIT) supports extended thermal environments. |
Use Scenario: Intermediate storage of digitized X-ray or ultrasound frames before DSP processing. IC Role / Device Role / Timing Role: Burst-capable 16-bit interface memory synchronized to imaging sensor clock domain. Use Value: 325 mW max active power enables thermal management in compact handheld diagnostic devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISSI IS61LV102416-15TQLI | 15 ns tAA, same 64K × 16 organization, but uses single-byte enable (UB/LB) instead of BHE/BLE; 3.3 V only. | Lacks independent upper/lower byte write control; requires external gating for partial-word updates. | Select when BHE/BLE functionality is unused and board layout favors ISSI's 44-pin TQFP footprint. |
| ON Semiconductor MC1021V33-15LG | 15 ns tAA, identical pinout and BHE/BLE logic, but rated only for commercial temp (0°C to +70°C). | Not qualified for industrial or automotive use; lacks extended temperature validation and screening. | Acceptable for cost-sensitive consumer-grade products where ambient stays below 70°C. |
Compared with IS61LV102416-15TQLI and MC1021V33-15LG, CY7C1021CV33-15VXCT uniquely delivers industrial-temp-rated BHE/BLE byte control in a proven TSOP II package-critical for deterministic partial-word writes in safety-critical systems.
Availability
CY7C1021CV33-15VXCT is available at Aetrix Electronics and suitable for industrial PLC data buffering, network packet memory, and medical imaging frame buffering requiring stable component supply and long-term lifecycle assurance.
Supply support for CY7C1021CV33-15VXCT 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 mixed-signal ICs for industrial, automotive, and communications infrastructure.
CY7C1021CV33 belongs to Cypress's legacy high-speed parallel SRAM product line, engineered specifically for deterministic, low-latency data buffering in real-time embedded systems with strict timing budgets.
FAQ
What is the maximum operating current for CY7C1021CV33-15VXCT at 3.3 V?
The maximum operating current (ICC) is 80 mA under industrial conditions (–40°C to +85°C) with fMAX = 1/tRC and IOUT = 0 mA. This value is measured at VCC = 3.63 V, with all inputs driven to valid logic levels and no output loading beyond specified test conditions.
Does CY7C1021CV33-15VXCT support true 16-bit concurrent read/write?
No-it supports 16-bit-wide data access but performs byte-level writes via BHE/BLE. Simultaneous upper- and lower-byte writes require separate BHE and BLE assertion; the device does not implement internal 16-bit write latching or atomic word write capability.
Can CY7C1021CV33-15VXCT be used with 5 V logic interfaces?
No-its absolute maximum input voltage is VCC + 0.5 V (≤3.8 V), and VIH minimum is 2.0 V. Direct connection to 5 V TTL or CMOS logic will exceed voltage ratings and risk permanent damage; level translation is mandatory.
Is there a drop-in replacement for CY7C1021BV33 with identical timing?
CY7C1021CV33-15VXCT is pin- and function-compatible with CY7C1021BV33 but offers improved tAA (15 ns vs. 15 ns nominal) and lower ISB2 (5 mA vs. 10 mA). No redesign is needed, though layout review for 3.3 V decoupling is recommended due to tighter voltage tolerance.
CY7C1021CV33-15VXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-BSOJ (0.400", 10.16mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-SOJ
CY7C1021CV33-15VXCT FAQ
1.How can I place an order for CY7C1021CV33-15VXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1021CV33-15VXCT 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 CY7C1021CV33-15VXCT reliable?
The price and inventory of CY7C1021CV33-15VXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1021CV33-15VXCT is usually 5 days.
3.What payment methods are accepted for CY7C1021CV33-15VXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1021CV33-15VXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1021CV33-15VXCT?
CY7C1021CV33-15VXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1021CV33-15VXCT 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 CY7C1021CV33-15VXCT?
For technical support, including CY7C1021CV33-15VXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1021CV33-15VXCT requirements.
6.How does Aetrix verify that CY7C1021CV33-15VXCT is sourced from the original manufacturer or authorized distributors?
All CY7C1021CV33-15VXCT 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 CY7C1021CV33-15VXCT meets industry standards.
7.What is the process for return or replacement of CY7C1021CV33-15VXCT?
All CY7C1021CV33-15VXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1021CV33-15VXCT, 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 CY7C1021CV33-15VXCT part is unused and in its original packaging.
Return procedure for CY7C1021CV33-15VXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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