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Infineon Technologies CY7C1041D-10ZSXI
- Part No.:
- CY7C1041D-10ZSXI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1041D-10ZSXI.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:2,466
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Product details
Overview
CY7C1041D-10ZSXI from Cypress Semiconductor is a 4-Mbit (256 K × 16) high-speed CMOS static RAM with 10 ns access time, 5 V supply, TTL-compatible I/O, and automatic CE power-down. It supports byte-wide writes via BHE/ BLE control and operates across –40 °C to +85 °C for industrial embedded systems requiring deterministic memory access in legacy microprocessor interfaces.
For engineers reviewing the CY7C1041D-10ZSXI datasheet, CY7C1041D-10ZSXI pinout, CY7C1041D-10ZSXI application, or CY7C1041D-10ZSXI equivalent, key selection factors include its 10 ns tAA timing, 90 mA active ICC at 10 ns, 10 mA ISB2 standby current, 2.0 V data retention capability, and compatibility with 44-pin TSOP II and SOJ packages.
Technical Context
The CY7C1041D-10ZSXI implements a synchronous, non-volatile-retentive SRAM architecture with dual-byte enable (BHE/BLE) for independent high- and low-byte write control. Its address decoding supports 18-bit addressing (A0–A17), enabling full 256K-word access without external banking logic.
It features TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max), output drive compliant with –4 mA VOH and 8 mA VOL, and automatic power-down when CE is deasserted - reducing ISB2 to 10 mA at VCC = 5 V with CMOS-compatible input biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Mbit (256 K × 16); supports 16-bit parallel bus interface without data multiplexing |
| Access Time (tAA) | 10 ns; enables direct interfacing with 80 MHz Z80, 68K, or early ARM7 buses |
| Supply Voltage | 5.0 V ± 0.5 V; requires stable 5 V rail; not compatible with 3.3 V-only systems |
| Active Current (ICC) | 90 mA at 10 ns; defines thermal budget for sustained read/write bursts |
| Standby Current (ISB2) | 10 mA at VCC = 5 V, CE > VCC – 0.3 V; enables low-power sleep in battery-backed systems |
| Data Retention Voltage | 2.0 V minimum; allows memory state hold during brown-out or controlled power-down |
| Input Compatibility | TTL-level only (VIH ≥ 2.0 V); incompatible with CMOS-input-only processors lacking level-shifting |
Pinout & Package
Package: 44-pin TSOP II (Type II), 400-mil body width, center power/ground pinout (VCC on pins 15 & 36, VSS on pins 14 & 31).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus; selects one of 256K locations; no internal address latching |
| I/O0–I/O7 | Data Bus (Low Byte) | Bi-directional 8-bit data path enabled by BLE = LOW during read/write |
| I/O8–I/O15 | Data Bus (High Byte) | Bi-directional 8-bit data path enabled by BHE = LOW during read/write |
| CE | Chip Enable | Active-low global select; forces automatic power-down and high-Z I/O when HIGH |
| OE | Output Enable | Active-low read strobe; controls output drivers independently of CE and WE |
| WE | Write Enable | Active-low write strobe; initiates write cycle when CE = LOW and WE = LOW |
| BLE | Byte Low Enable | Active-low control for I/O0–I/O7; enables partial-byte writes without masking logic |
| BHE | Byte High Enable | Active-low control for I/O8–I/O15; enables independent high-byte updates |
Key Features
| Feature | Design Value |
|---|---|
| Pin- and function-compatible with CY7C1041B | Enables drop-in replacement in existing designs without PCB or firmware changes |
| Automatic CE power-down mode | Reduces standby current to 10 mA without external control logic or sleep sequencing |
| TTL-compatible I/O levels | Direct interface with legacy 5 V microprocessors (e.g., Motorola 68000, Intel 80C188) without level shifters |
| Independent byte write control (BHE/BLE) | Eliminates need for external byte-mask gates in 16-bit systems with 8-bit peripheral coexistence |
| 2.0 V data retention | Preserves memory contents during controlled 5 V → 2 V brown-out transitions for safe system recovery |
Applications
| Industrial PLC Data Buffer | Legacy Medical Imaging Controller |
|---|---|
Use Scenario: Real-time buffering of sensor acquisition data in programmable logic controllers with 16-bit ISA-style backplanes. IC Role / Device Role / Timing Role: Primary working memory for cyclic scan buffers; accessed synchronously with 80 ns–100 ns CPU bus cycles. Use Value: 10 ns tAA ensures zero-wait-state operation with 10 MHz 68000-based controllers; BHE/BLE enables selective register updates without full-word writes. | Use Scenario: Frame buffer storage in analog X-ray digitizer subsystems using 5 V TTL video timing generators. IC Role / Device Role / Timing Role: Dual-port-accessible scratchpad for pixel line buffering between ADC and FPGA pre-processing stages. Use Value: TTL-compatible inputs accept direct 5 V video clock and sync signals; 2.0 V retention preserves last valid frame during brief AC dropout. |
| Avionics Display Memory | Test Equipment Pattern Generator |
Use Scenario: Non-volatile display refresh memory in cockpit multifunction displays operating across –40 °C to +85 °C. IC Role / Device Role / Timing Role: Static frame store updated via discrete address/data bus under MIL-STD-1553B host control. Use Value: Industrial temperature rating and 10 mA ISB2 support extended idle periods between HUD refresh cycles without thermal derating. | Use Scenario: Vector pattern storage in automated test equipment generating 16-bit stimulus waveforms at 100 MHz sampling rates. IC Role / Device Role / Timing Role: High-speed waveform lookup table accessed via FPGA address sequencer with precise 10 ns timing alignment. Use Value: 10 ns tAA and tRC guarantee deterministic 100 MHz burst reads; 44-pin TSOP II footprint enables dense PCB layout in modular instrument chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AS6C4008-10TIN | 3.3 V only; 10 ns access; 256 K × 16; different pinout (no BHE/BLE) | Requires level-shifting and external byte-enable logic for 5 V systems | Select only for new 3.3 V designs where footprint and voltage scaling outweigh compatibility needs |
| CY7C1041DN-10ZSXI | Pb-free revision with identical timing, pinout, and electrical specs; same TSOP II package | No functional or mechanical difference; qualifies as direct replacement | Preferred for RoHS-compliant builds where legacy CY7C1041D-10ZSXI is obsolete or restricted |
Compared with AS6C4008-10TIN and CY7C1041DN-10ZSXI, the CY7C1041D-10ZSXI uniquely retains native 5 V TTL compatibility and integrated byte enables - critical for maintaining signal integrity and minimizing gate count in legacy industrial control upgrades.
Availability
CY7C1041D-10ZSXI is available at Aetrix Electronics and suitable for industrial PLC data buffering, legacy medical imaging controllers, and avionics display memory requiring stable component supply across extended product lifecycles.
Supply support for CY7C1041D-10ZSXI 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 aerospace applications.
The CY7C1041D belongs to Cypress's legacy parallel SRAM product line, engineered specifically for pin-compatible migration paths from earlier 1 Mbit and 2 Mbit devices in 5 V microprocessor-based systems.
FAQ
Is CY7C1041D-10ZSXI compatible with 3.3 V systems?
No. The device requires a nominal 5.0 V ± 0.5 V supply and TTL-level inputs (VIH ≥ 2.0 V). Interfacing with 3.3 V logic requires level-shifting circuitry on all address, data, and control lines. Its output drive is rated for 5 V loads only, and operation below 4.5 V violates the specified operating range.
What is the function of BHE and BLE pins?
BHE (Byte High Enable) and BLE (Byte Low Enable) are active-low signals that independently gate the high (I/O8–I/O15) and low (I/O0–I/O7) data bytes during read and write operations. When asserted, they allow partial-word writes without external masking logic - essential for efficient register updates in 16-bit peripheral interfaces.
Does CY7C1041D-10ZSXI support battery backup operation?
Yes - it supports data retention down to 2.0 V VCC with ISB2 ≤ 10 mA. This enables use with external backup batteries or supercapacitors to preserve memory contents during main power loss, provided CE remains asserted and all inputs are held within valid voltage ranges per the datasheet's retention waveform specifications.
Can CY7C1041D-10ZSXI be used in place of CY7C1041B?
Yes - it is explicitly pin- and function-compatible with CY7C1041B per the datasheet. No PCB or firmware modifications are required for replacement. Key improvements include tighter tAA tolerance (10 ns guaranteed vs. 12 ns for -12 variant) and enhanced ISB2 performance, making it suitable for higher-density or lower-power variants of existing designs.
CY7C1041D-10ZSXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tube
- 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:
- 10ns
- Access Time:
- 10 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
CY7C1041D-10ZSXI FAQ
1.How can I place an order for CY7C1041D-10ZSXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1041D-10ZSXI 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 CY7C1041D-10ZSXI reliable?
The price and inventory of CY7C1041D-10ZSXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1041D-10ZSXI is usually 5 days.
3.What payment methods are accepted for CY7C1041D-10ZSXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1041D-10ZSXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1041D-10ZSXI?
CY7C1041D-10ZSXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1041D-10ZSXI 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 CY7C1041D-10ZSXI?
For technical support, including CY7C1041D-10ZSXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1041D-10ZSXI requirements.
6.How does Aetrix verify that CY7C1041D-10ZSXI is sourced from the original manufacturer or authorized distributors?
All CY7C1041D-10ZSXI 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 CY7C1041D-10ZSXI meets industry standards.
7.What is the process for return or replacement of CY7C1041D-10ZSXI?
All CY7C1041D-10ZSXI units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1041D-10ZSXI, 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 CY7C1041D-10ZSXI part is unused and in its original packaging.
Return procedure for CY7C1041D-10ZSXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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