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

Infineon Technologies CY7C1049CV33-15ZSXE

Name: CY7C1049CV33-15ZSXE
Brand: Infineon Technologies
SKU: CY7C1049CV33-15ZSXE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY7C1049CV33-15ZSXE

Manufacturer:: Infineon Technologies

Category:: Memory

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

Datasheet:: CY7C1049CV33-15ZSXE.pdf

Description:: IC SRAM 4MBIT PARALLEL 44TSOP II

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Product details

Overview

CY7C1049CV33-15ZSXE from Infineon Technologies is a 4-Mbit asynchronous CMOS static RAM organized as 512K × 8, operating at 3.3 V with 15 ns access time, TTL-compatible I/O, and industrial temperature range (–40°C to +85°C), used in legacy networking control planes and FPGA configuration buffers.

For engineers reviewing the CY7C1049CV33-15ZSXE datasheet, CY7C1049CV33-15ZSXE pinout, CY7C1049CV33-15ZSXE application, or CY7C1049CV33-15ZSXE equivalent, key selection criteria include parallel interface timing compliance, 3.3 V core/V_DDQ separation, TSOP II mechanical footprint, and industrial-grade data retention stability.

Technical Context

This SRAM implements full static operation-no refresh required-with separate byte-write controls (UB/LB) enabling independent upper/lower byte writes. It features automatic power-down mode activated by deselection (CE high), reducing standby current to 1 µA typical.

Address setup/hold and data hold times are specified relative to CE and OE/WE edges, supporting direct interfacing with microcontrollers and ASICs without external wait-state logic. The device uses standard TTL-level input thresholds and drives LVTTL-compatible outputs.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	4 Mbit (512K × 8 bits); supports byte-wide data bus without multiplexing or address latching.
Access Time	15 ns max; guarantees read data valid within 15 ns after address/CE/OE stabilization for 33 MHz system timing.
Supply Voltage	V_CC = 3.3 V ± 0.3 V; requires single 3.3 V rail-no 5 V tolerance or dual-voltage support.
Operating Temperature	–40°C to +85°C; validated for use in industrial control cabinets and telecom line cards without derating.
Standby Current	1 µA typical at 85°C; enables low-power hold mode during processor sleep in battery-backed systems.
Write Cycle Time	15 ns min; matches read cycle timing for seamless burst-mode firmware updates.

Pinout & Package

44-pin Thin Small Outline Package (TSOP II), 400 mil width, JEDEC MO-141AC compliant, with 0.8 mm lead pitch and body height of 1.2 mm.

Pin/Terminal	Circuit Role	Design Meaning
A0–A18	Address Inputs	19-bit address bus supporting full 512K-word decoding; no internal address multiplexing.
I/O0–I/O7	Bi-directional Data Bus	8-bit parallel interface; direction controlled by WE and OE; TTL-compatible drive strength.
CE	Chip Enable	Active-low enable controlling device selection; asserts power-down mode when high.
OE	Output Enable	Active-low control for read data output; does not affect write operations or power state.
WE	Write Enable	Active-low signal initiating write cycle; sampled synchronously with CE and address stability.
UB/LB	Upper/Lower Byte Control	Independent byte write enables allowing 8-bit partial writes without masking logic.
V_CC, V_SS	Power/Ground	Dedicated 3.3 V core supply and ground pins; no V_DDQ separation-single V_CC powers I/O and core.

Key Features

Feature	Design Value
Asynchronous Operation	No clock required-simplifies timing design in microcontroller-based systems with variable bus speeds.
Byte Write Control (UB/LB)	Enables selective 8-bit writes without external byte-lane gating or data bus transceivers.
Low-Power Standby Mode	1 µA typical current draw allows continuous memory retention during host processor deep-sleep states.
TTL-Compatible Interface	Direct connection to legacy 3.3 V microcontrollers (e.g., ARM7TDMI, ColdFire) without level-shifting circuitry.

Applications

Industrial PLC Data Buffers

Legacy Network Switch Control Planes

Use Scenario: Storing real-time I/O status and configuration registers in modular programmable logic controllers.

IC Role / Device Role / Timing Role: Non-volatile shadow RAM holding runtime variables with deterministic 15 ns read latency for scan-cycle execution.

Use Value: Eliminates need for external wait-state generators due to guaranteed access time matching PLC CPU bus timing.

Use Scenario: Holding forwarding table entries and port mapping data in 10/100 Mbps Ethernet switches.

IC Role / Device Role / Timing Role: Parallel-accessed lookup table buffer interfaced directly to switch fabric ASIC address/data bus.

Use Value: Enables zero-wait-state packet header processing at line rate without pipeline stalls.

FPGA Configuration Storage

Medical Imaging System Frame Buffers

Use Scenario: Storing bitstream configuration data for Spartan-3 and Virtex-II FPGAs during power-up.

IC Role / Device Role / Timing Role: Static boot memory mapped to FPGA's slave parallel configuration interface.

Use Value: Supports reliable reconfiguration under industrial temperature cycling without data corruption.

Use Scenario: Temporary storage of digitized X-ray or ultrasound frame data before DSP processing.

IC Role / Device Role / Timing Role: High-speed parallel buffer between ADC interface and image processing engine.

Use Value: Sustains 66 MHz sustained read/write throughput required for real-time DICOM preview rendering.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ISSI IS61LV5128AL-15K	Same 512K × 8 organization and 15 ns speed, but uses 32-pin SOJ package and lacks UB/LB pins.	Requires external byte-enable logic for partial writes; unsuitable where space-constrained TSOP II footprint is mandatory.	Select only if board layout accommodates SOJ and byte-write granularity is not required.
Cypress CY7C1041CV33-15ZC	Identical pinout and timing, but rated for commercial temperature (0°C to +70°C) and has higher standby current (5 µA).	Not qualified for extended industrial environments; may fail thermal validation in enclosed enclosures.	Acceptable only for cost-sensitive commercial designs with ambient temperature control.

Compared with IS61LV5128AL-15K and CY7C1041CV33-15ZC, the CY7C1049CV33-15ZSXE uniquely delivers industrial temperature rating, byte-write capability, and TSOP II packaging in a single device-critical for field-deployed embedded systems requiring long-term reliability without redesign.

Availability

CY7C1049CV33-15ZSXE is available at Aetrix Electronics and suitable for industrial PLCs, legacy network switches, and FPGA-based medical imaging systems requiring stable component supply across multi-year production cycles.

Supply support for CY7C1049CV33-15ZSXE 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, and memory solutions, with global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.

This device belongs to Infineon's legacy parallel SRAM product line, designed specifically for drop-in replacement of aging 3.3 V SRAMs in industrial and telecom infrastructure where long-lifecycle support and mechanical compatibility are essential.

FAQ

Is CY7C1049CV33-15ZSXE RoHS compliant?

Yes. CY7C1049CV33-15ZSXE is RoHS 2011/65/EU compliant and lead-free, with matte tin (Sn) termination finish on all leads. It meets JEDEC J-STD-020D moisture sensitivity level 3 (MSL-3) and qualifies for standard reflow profiles including IPC/JEDEC J-STD-020.

Can this SRAM interface directly with a 5 V microcontroller?

No. CY7C1049CV33-15ZSXE operates exclusively at 3.3 V and has TTL-compatible input thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V), but its outputs are not 5 V tolerant. Direct connection to 5 V logic requires level-shifting circuitry such as TI SN74AVC4T245 or discrete MOSFET translators.

Does it support battery backup operation?

Yes. With V_CC maintained above 2.0 V (minimum data retention voltage), the device retains data indefinitely at temperatures up to +85°C. Typical retention current is 1 µA, enabling operation from coin-cell batteries (e.g., CR2032) for >10 years in low-duty-cycle applications.

What is the maximum clock frequency supported for burst reads?

This is an asynchronous SRAM-no clock is used. Maximum effective throughput is determined by cycle time: 15 ns access + 15 ns cycle time = 66.7 MHz peak bandwidth (533 MB/s for 8-bit bus). Burst operation relies on external address sequencing, not internal clocking.

CY7C1049CV33-15ZSXE 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:: 512K x 8

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 15ns

Access Time:: 15 ns

Voltage - Supply:: 3V ~ 3.6V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 44-TSOP II

CY7C1049CV33-15ZSXE FAQ

1.How can I place an order for CY7C1049CV33-15ZSXE through Aetrix?

Please submit a Request for Quotation (RFQ) for CY7C1049CV33-15ZSXE 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 CY7C1049CV33-15ZSXE reliable?

The price and inventory of CY7C1049CV33-15ZSXE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1049CV33-15ZSXE is usually 5 days.

3.What payment methods are accepted for CY7C1049CV33-15ZSXE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1049CV33-15ZSXE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY7C1049CV33-15ZSXE?

CY7C1049CV33-15ZSXE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY7C1049CV33-15ZSXE 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 CY7C1049CV33-15ZSXE?

For technical support, including CY7C1049CV33-15ZSXE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1049CV33-15ZSXE requirements.

6.How does Aetrix verify that CY7C1049CV33-15ZSXE is sourced from the original manufacturer or authorized distributors?

All CY7C1049CV33-15ZSXE 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 CY7C1049CV33-15ZSXE meets industry standards.

7.What is the process for return or replacement of CY7C1049CV33-15ZSXE?

All CY7C1049CV33-15ZSXE units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1049CV33-15ZSXE, 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 CY7C1049CV33-15ZSXE part is unused and in its original packaging.

Return procedure for CY7C1049CV33-15ZSXE:

1.Submit a request within 90 days.

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

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