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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Infineon Technologies CY7C1041BNV33L-12ZXC

Name: CY7C1041BNV33L-12ZXC
Brand: Infineon Technologies
SKU: CY7C1041BNV33L-12ZXC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY7C1041BNV33L-12ZXC

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 44-TSOP (0.400", 10.16mm Width)

Datasheet:: CY7C1041BNV33L-12ZXC.pdf

Description:: IC SRAM 4MBIT PARALLEL 44TSOP II

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Product details

Overview

CY7C1041BNV33L-12ZXC from Infineon (formerly Cypress) is a 4-Mbit asynchronous static RAM (SRAM) with 256K × 16 organization, 3.3 V supply voltage, and 12 ns access time. It features low-power CMOS design, TTL-compatible inputs/outputs, and operates over industrial temperature range (–40°C to +85°C). Used in network packet buffering, industrial PLC data tables, and FPGA configuration memory.

For engineers reviewing the CY7C1041BNV33L-12ZXC datasheet, CY7C1041BNV33L-12ZXC pinout, CY7C1041BNV33L-12ZXC application, or CY7C1041BNV33L-12ZXC equivalent, key selection criteria include access time consistency under varying V_CC, byte-wide write enable control, and compatibility with legacy 16-bit bus architectures requiring no wait states at 12 ns.

Technical Context

This SRAM implements true asynchronous operation with independent address setup/hold timing relative to CE#, OE#, and WE# control signals. It supports byte-wide write via UB# and LB# pins, enabling selective upper/lower byte updates without read-modify-write cycles.

Internally, it uses a fully decoded architecture with on-chip address latching and dual-port-like read/write isolation-read operations do not stall writes to other addresses, and write cycles complete within t_WC = 12 ns (min), matching its access time specification.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	4 Mbit (256K × 16): Supports 256,000 16-bit words for compact data storage in space-constrained embedded systems.
Access Time	12 ns: Enables direct interface with 80 MHz bus clocks without wait-state insertion in synchronous bus wrappers.
Supply Voltage	3.3 V ± 0.3 V: Matches standard LVCMOS I/O domains and eliminates need for level-shifting in 3.3 V system designs.
Operating Temperature	–40°C to +85°C: Qualified for industrial environments including factory automation controllers and outdoor telecom equipment.
Power Dissipation	Max 500 mW (active), 1 µA (standby): Allows continuous operation in thermally constrained enclosures without forced cooling.
Write Cycle Time	12 ns min: Guarantees deterministic write completion aligned with read access timing, simplifying timing closure in FPGA-based controllers.

Pinout & Package

Supplied in a 44-pin TSOP II (Type II) thin shrink small-outline package (10.16 mm × 20.95 mm), lead-free and RoHS-compliant, with 0.8 mm pitch and gull-wing leads.

Pin/Terminal	Circuit Role	Design Meaning
A0–A17	Address Inputs	18-bit address bus supporting full 256K-word decoding; A17 selects upper/lower half of memory map.
DQ0–DQ15	Data I/O Lines	Bi-directional 16-bit data bus with internal bus-hold circuitry to prevent floating during high-impedance states.
CE#	Chip Enable	Active-low global enable; device enters standby mode when high, reducing current to ≤1 µA.
OE#	Output Enable	Active-low read strobe; controls output drivers only-does not affect internal memory state or write readiness.
WE#	Write Enable	Active-low write strobe; initiates write cycle when CE# and LB#/UB# are asserted concurrently.
UB#, LB#	Upper/Lower Byte Write	Independent byte-select controls allow 8-bit partial writes to DQ8–DQ15 or DQ0–DQ7 without disturbing adjacent bytes.
V_CC, V_SS	Power & Ground	Dual V_CC (pins 1, 44) and dual V_SS (pins 23, 24) reduce simultaneous switching noise and improve signal integrity.

Key Features

Feature	Design Value
Byte-Controlled Write	UB#/LB# pins enable independent 8-bit writes to upper or lower data byte-eliminates need for external byte-masking logic in microcontroller interfaces.
TTL-Compatible I/O	Input thresholds and output drive strength match standard TTL levels, allowing direct connection to legacy 5 V-tolerant microcontrollers without level shifters.
Low Standby Current	≤1 µA typical at V_CC = 3.3 V and T_A = 25°C ensures minimal power draw during system sleep modes in battery-backed applications.
Industrial Temp Range	Specified operation from –40°C to +85°C enables deployment in uncontrolled environments such as motor control cabinets and outdoor base stations.

Applications

Industrial PLC Data Tables

Network Packet Buffering

Use Scenario: Storing real-time I/O status, timer values, and ladder logic variables in programmable logic controllers with deterministic scan cycles.

IC Role / Device Role / Timing Role: Asynchronous SRAM providing zero-wait-state 16-bit data access synchronized to PLC CPU clock edges.

Use Value: 12 ns access time ensures full 256K-word table reads/writes complete within single 20 MHz CPU instruction cycle, eliminating polling delays.

Use Scenario: Temporary storage of Ethernet frames in Layer 2 switches before forwarding or filtering decisions.

IC Role / Device Role / Timing Role: Dual-port-emulating buffer holding up to 256 frames (1500-byte MTU) with concurrent read/write capability per address.

Use Value: Byte-select write (UB#/LB#) allows frame header and payload updates independently, reducing latency in store-and-forward pipelines.

FPGA Configuration Memory

Medical Imaging Frame Store

Use Scenario: Holding configuration bitstreams and runtime lookup tables for Xilinx Spartan or Intel MAX 10 FPGAs in diagnostic equipment.

IC Role / Device Role / Timing Role: Non-volatile-configurable SRAM acting as fast, pin-compatible alternative to slower SPI flash for dynamic reconfiguration.

Use Value: 3.3 V I/O compatibility and 12 ns access enable direct connection to FPGA configuration bus without level translation or timing margin loss.

Use Scenario: Capturing and staging uncompressed grayscale ultrasound or endoscope video frames prior to JPEG compression.

IC Role / Device Role / Timing Role: High-speed frame buffer interfacing with image sensor parallel output and DSP write port.

Use Value: 256K × 16 organization stores one 512×512×8-bit frame; 12 ns access supports real-time pixel streaming at ≥60 fps.

Equivalent & Alternatives

The following parts are listed as comparable options for similar asynchronous SRAM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IS61LV25616AL-12TQLI	Same 256K × 16 organization and 12 ns access, but uses 48-pin TSOP I package with different pinout (no dedicated LB#/UB#).	Lacks byte-write control; requires external logic for partial writes, increasing PCB area and routing complexity.	Select when footprint compatibility with existing TSOP I layouts is required and byte-select functionality is unused.
AS6C4008-12ZIN	4-Mbit (512K × 8) organization, 12 ns access, 3.3 V supply, but only 8-bit data bus and no UB#/LB# pins.	Requires two parallel devices for 16-bit interface, doubling component count and power consumption.	Choose only if system architecture mandates 8-bit data path or if board layout cannot accommodate 16-bit bus width.

Compared with IS61LV25616AL-12TQLI and AS6C4008-12ZIN, CY7C1041BNV33L-12ZXC uniquely delivers native 16-bit byte-select write capability in a 44-pin TSOP II package-reducing BOM count, simplifying timing closure, and minimizing PCB layer count in space-sensitive industrial designs.

Availability

CY7C1041BNV33L-12ZXC is available at Aetrix Electronics and suitable for industrial PLCs, network switches, FPGA-based instrumentation, and medical imaging subsystems requiring stable component supply across multi-year production cycles.

Supply support for CY7C1041BNV33L-12ZXC 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, security solutions, and memory products, with global R&D and manufacturing infrastructure.

This device belongs to Infineon's legacy Cypress SRAM portfolio, designed specifically for high-reliability, low-latency data buffering in industrial control, communications infrastructure, and embedded computing where deterministic timing and long-term supply stability are critical.

FAQ

What is the maximum clock frequency supported by CY7C1041BNV33L-12ZXC?

This is an asynchronous SRAM-it has no internal clock. Its 12 ns access time supports reliable interfacing with external bus clocks up to 80 MHz (12.5 ns period), provided setup/hold timing for CE#, OE#, and WE# is met. No PLL or clock input is present.

Does CY7C1041BNV33L-12ZXC support battery backup operation?

No. It lacks built-in battery-switching circuitry or NVSRAM functionality. While standby current is low (≤1 µA), data retention requires continuous V_CC; external battery-backed SRAM controllers or nonvolatile alternatives (e.g., nvSRAM) are needed for power-loss protection.

Can UB# and LB# be used simultaneously for full 16-bit writes?

Yes. Asserting both UB# and LB# low during a write cycle enables full 16-bit data transfer to DQ0–DQ15. The device treats this as a standard word write-no timing penalty or special sequence is required beyond meeting t_WEL and t_SD specifications.

Is CY7C1041BNV33L-12ZXC compliant with JEDEC standards for TSOP II packages?

Yes. It conforms to JEDEC MO-143AC for 44-pin TSOP II mechanical dimensions, lead pitch (0.8 mm), and thermal profile. Pin 1 marking, body thickness (1.2 mm max), and solder reflow profile align with industry-standard assembly processes for lead-free PCBs.

CY7C1041BNV33L-12ZXC 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:: 4Mbit

Memory Organization:: 256K 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-TSOP II

CY7C1041BNV33L-12ZXC FAQ

1.How can I place an order for CY7C1041BNV33L-12ZXC through Aetrix?

Please submit a Request for Quotation (RFQ) for CY7C1041BNV33L-12ZXC 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 CY7C1041BNV33L-12ZXC reliable?

The price and inventory of CY7C1041BNV33L-12ZXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1041BNV33L-12ZXC is usually 5 days.

3.What payment methods are accepted for CY7C1041BNV33L-12ZXC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1041BNV33L-12ZXC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY7C1041BNV33L-12ZXC?

CY7C1041BNV33L-12ZXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY7C1041BNV33L-12ZXC 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 CY7C1041BNV33L-12ZXC?

For technical support, including CY7C1041BNV33L-12ZXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1041BNV33L-12ZXC requirements.

6.How does Aetrix verify that CY7C1041BNV33L-12ZXC is sourced from the original manufacturer or authorized distributors?

All CY7C1041BNV33L-12ZXC 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 CY7C1041BNV33L-12ZXC meets industry standards.

7.What is the process for return or replacement of CY7C1041BNV33L-12ZXC?

All CY7C1041BNV33L-12ZXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1041BNV33L-12ZXC, 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 CY7C1041BNV33L-12ZXC part is unused and in its original packaging.

Return procedure for CY7C1041BNV33L-12ZXC:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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