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Infineon Technologies CY7C1041CV33-20ZXC
- Part No.:
- CY7C1041CV33-20ZXC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1041CV33-20ZXC.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:4,759
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Product details
Overview
CY7C1041CV33-20ZXC from Cypress Semiconductor is a 4-Mbit (256K × 16) asynchronous CMOS static RAM with 10 ns access time, TTL-compatible I/O, and dual-byte write control (BHE/ BLE). It operates at 3.3 V ±0.3 V, supports automatic CE power-down (ISB2 = 10 mA), and is rated for industrial temperature (–40°C to +85°C). Used in real-time data buffering for industrial PLCs, network packet buffers, and FPGA co-processor memory subsystems.
For engineers reviewing the CY7C1041CV33-20ZXC datasheet, CY7C1041CV33-20ZXC pinout, CY7C1041CV33-20ZXC application, or CY7C1041CV33-20ZXC equivalent, key selection criteria include tAA = 20 ns timing compliance, byte-selectable 16-bit I/O architecture, industrial-grade thermal resistance (ΘJA = 42.96°C/W in SOJ), and Pb-free 44-pin SOJ package compatibility with legacy CY7C1041BV33 designs.
Technical Context
This SRAM implements a fully asynchronous interface with independent byte-enable control: BLE governs I/O0–I/O7, BHE governs I/O8–I/O15, enabling partial-word writes without read-modify-write cycles. Address decoding uses a 18-bit input (A0–A17) to access all 262,144 locations.
Power management relies on CE-driven automatic power-down - when CE is HIGH, ICC drops to ISB2 = 10 mA (CMOS inputs) or ISB1 = 40 mA (TTL inputs), while data retention remains valid down to 2.0 V. Output enable (OE) and write enable (WE) are fully orthogonal, supporting OE-controlled reads and WE-controlled writes in overlapping timing modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 256K × 16-bit (4 Mbit); supports 16-bit parallel bus interfaces without external data-width conversion. |
| Access Time (tAA) | 20 ns max; guarantees data validity within 20 ns of stable address assertion under industrial conditions. |
| VCC Supply | 3.3 V ±0.3 V; compatible with standard LVTTL and LVCMOS 3.3-V system rails. |
| Standby Current (ISB2) | 10 mA max (CMOS inputs); enables low-power hold mode during CPU idle cycles in embedded controllers. |
| Data Retention Voltage | 2.0 V min; preserves stored contents during brown-out or controlled power sequencing. |
| Operating Temperature | –40°C to +85°C; qualified for industrial automation and base station control modules. |
| I/O Capacitance | 8 pF max per pin; minimizes signal integrity impact on high-speed 16-bit buses. |
Pinout & Package
Package: 44-pin 400-mil SOJ (Small Outline J-Lead), Pb-free, with center power/ground pinout layout optimized for signal integrity and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Input | 18-bit address bus; selects one of 262,144 memory locations; no internal latching. |
| I/O0–I/O7 / I/O8–I/O15 | Bidirectional Data Bus | Two independent 8-bit I/O ports; enabled separately by BLE (low-byte) and BHE (high-byte). |
| CE | Chip Enable | Active-low chip select; enables automatic power-down when deasserted (ISB2 = 10 mA). |
| WE | Write Enable | Active-low write strobe; controls write initiation independently of OE and CE timing. |
| OE | Output Enable | Active-low output gate; places I/O pins in high-Z when HIGH, enabling bus sharing. |
| BLE / BHE | Byte Write Enable | Independent active-low enables for lower/upper byte; eliminates need for external byte masking logic. |
| VCC / VSS | Power / Ground | Dual VCC (pins 11, 33) and dual VSS (pins 12, 34) reduce IR drop and improve noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-byte write control | Enables atomic 8-bit writes to either half of the 16-bit word without disturbing the other byte. |
| Automatic CE power-down | Reduces current to 10 mA (ISB2) with no external control logic required when chip is deselected. |
| TTL-compatible I/O | Accepts 0.8 V / 2.0 V logic thresholds and drives ±4 mA / 8 mA loads, easing integration with legacy 3.3-V microcontrollers. |
| 2.0 V data retention | Maintains stored data during undervoltage events common in industrial power supplies and battery-backed systems. |
| Pin-equivalent to CY7C1041BV33 | Direct drop-in replacement for prior-generation 3.3-V SRAMs, preserving PCB layout and firmware timing margins. |
Applications
| Industrial PLC Data Buffer | Network Packet Memory |
|---|---|
Use Scenario: Real-time I/O scan buffering in programmable logic controllers where deterministic latency and data integrity are critical. IC Role / Device Role / Timing Role: Asynchronous 16-bit SRAM providing zero-wait-state scratchpad memory for cyclic process image updates. Use Value: 20 ns tAA ensures sub-microsecond response to fieldbus interrupt requests; dual-byte write avoids corruption during partial register updates. | Use Scenario: Temporary storage of Ethernet frames in Layer-2 switches before forwarding or filtering decisions. IC Role / Device Role / Timing Role: High-bandwidth, low-latency buffer interfacing directly with MAC controller's 16-bit data bus. Use Value: 8 pF I/O capacitance and 20 ns access support sustained 50 MB/s throughput; CE power-down reduces idle power in bursty traffic patterns. |
| FPGA Co-Processor Memory | Medical Imaging Frame Store |
Use Scenario: Local memory for Xilinx or Intel FPGA-based vision processing units performing real-time pixel manipulation. IC Role / Device Role / Timing Role: Off-chip instruction/data RAM synchronized to FPGA clock domain via simple handshaking (CE/OE/WE). Use Value: Pin-compatible upgrade path from CY7C1041BV33 allows reuse of existing HDL memory controllers; industrial temp rating supports fanless enclosures. | Use Scenario: Intermediate frame storage in portable ultrasound devices requiring reliable operation across clinical ambient ranges. IC Role / Device Role / Timing Role: Non-volatile-retentive buffer holding digitized RF echo data between acquisition and DSP compression stages. Use Value: 2.0 V data retention enables safe shutdown during battery swap; –40°C to +85°C rating covers operating range of handheld diagnostic tools. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar asynchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISSI IS61LV25616AL-20TQLI | Same 256K × 16 organization and 20 ns access, but uses single-byte enable (UB/LB) instead of BHE/ BLE; higher ISB2 = 15 mA. | Lacks independent high/low byte write control; requires external logic for partial-word writes. | Select if cost sensitivity outweighs byte-select flexibility and board space permits added logic. |
| Winbond W9825G6JH-20 | SDRAM, not SRAM; requires refresh, clock, and command sequencing; 133 MHz effective bandwidth vs. 50 MB/s peak SRAM throughput. | Not pin- or functionally compatible; demands full memory controller redesign. | Choose only for high-density, low-cost bulk storage where deterministic latency is non-critical. |
Compared with IS61LV25616AL-20TQLI, CY7C1041CV33-20ZXC provides true independent byte write capability and lower standby current; versus W9825G6JH-20, it delivers guaranteed zero-wait-state access and eliminates refresh overhead - essential for hard real-time edge nodes.
Availability
CY7C1041CV33-20ZXC is available at Aetrix Electronics and suitable for industrial PLC data buffering, network packet memory, and FPGA co-processor memory requiring stable component supply, long-term lifecycle assurance, and Pb-free compliance.
Supply support for CY7C1041CV33-20ZXC 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.
CY7C1041CV33 belongs to Cypress's legacy high-speed asynchronous SRAM product line, engineered specifically for deterministic, low-latency data buffering in real-time embedded systems without refresh or clock management overhead.
FAQ
What is the maximum junction temperature for CY7C1041CV33-20ZXC in SOJ package?
The device has ΘJA = 42.96°C/W and ΘJC = 10.75°C/W. With VCC = 3.3 V and ICC = 75 mA (max commercial), power dissipation is ~248 mW. At TA = 85°C, TJ ≈ 85 + (0.248 × 42.96) = 95.7°C - well below the absolute maximum of 125°C. Derating applies above 85°C ambient.
Can CY7C1041CV33-20ZXC operate with mixed 3.3 V and 5 V logic interfaces?
No. All inputs require VIH ≥ 2.0 V and VIL ≤ 0.8 V referenced to VCC = 3.3 V. Direct connection to 5 V logic violates absolute maximum ratings (VCC + 0.5 V = 3.8 V). Level-shifting circuitry is mandatory for interoperability with 5 V systems.
Does the device support concurrent read and write operations on separate bytes?
No. The CY7C1041CV33-20ZXC is strictly asynchronous and single-port: only one operation (read or write) may occur per cycle. BHE/ BLE enable selective byte access *within* a single read or write transaction, not simultaneous access.
Is the 48-ball FBGA variant pin-compatible with the 44-pin SOJ version?
No. The 48-ball FBGA (e.g., CY7C1041CV33-20ZSXI) uses a different pin mapping, including relocated VCC/VSS, NC placements, and shifted address/data ball positions. PCB redesign is required; only the 44-pin SOJ and TSOP II variants share identical pinouts.
CY7C1041CV33-20ZXC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Bag
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 4Mbit
- Memory Organization:
- 256K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20ns
- Access Time:
- 20 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
CY7C1041CV33-20ZXC FAQ
1.How can I place an order for CY7C1041CV33-20ZXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1041CV33-20ZXC 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 CY7C1041CV33-20ZXC reliable?
The price and inventory of CY7C1041CV33-20ZXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1041CV33-20ZXC is usually 5 days.
3.What payment methods are accepted for CY7C1041CV33-20ZXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1041CV33-20ZXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1041CV33-20ZXC?
CY7C1041CV33-20ZXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1041CV33-20ZXC 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 CY7C1041CV33-20ZXC?
For technical support, including CY7C1041CV33-20ZXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1041CV33-20ZXC requirements.
6.How does Aetrix verify that CY7C1041CV33-20ZXC is sourced from the original manufacturer or authorized distributors?
All CY7C1041CV33-20ZXC 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 CY7C1041CV33-20ZXC meets industry standards.
7.What is the process for return or replacement of CY7C1041CV33-20ZXC?
All CY7C1041CV33-20ZXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1041CV33-20ZXC, 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 CY7C1041CV33-20ZXC part is unused and in its original packaging.
Return procedure for CY7C1041CV33-20ZXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C1041CV33-20ZXC Tags
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