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

Infineon Technologies CY7C1049CV33-12ZSXA

Name: CY7C1049CV33-12ZSXA
Brand: Infineon Technologies
SKU: CY7C1049CV33-12ZSXA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY7C1049CV33-12ZSXA

Manufacturer:: Infineon Technologies

Category:: Memory

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

Datasheet:: CY7C1049CV33-12ZSXA.pdf

Description:: IC SRAM 4MBIT PARALLEL 44TSOP II

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Product details

Overview

CY7C1049CV33-12ZSXA from Infineon Technologies is a 4-Mbit asynchronous CMOS static RAM organized as 512K × 8, operating at 3.3 V with 12 ns access time and industrial temperature range (–40°C to +85°C), used in legacy embedded controllers and FPGA configuration memory buffers.

For engineers reviewing the CY7C1049CV33-12ZSXA datasheet, CY7C1049CV33-12ZSXA pinout, CY7C1049CV33-12ZSXA application, or CY7C1049CV33-12ZSXA equivalent, key selection criteria include parallel x8 interface timing, TSOP II package compatibility, low-power standby current (≤1 µA), and TTL-compatible I/O voltage levels.

Technical Context

This SRAM implements full asynchronous read/write operation with separate OE#, WE#, and CE# controls, supporting byte-wide data access without internal refresh circuitry. It uses standard TTL-level input thresholds and outputs drive ±8 mA at V_OH/V_OL.

Timing is defined by t_AA = 12 ns (address access), t_OEH = 8 ns (output enable hold), and t_HZ = 3 ns (output high-impedance delay), ensuring compatibility with legacy microprocessor buses such as Intel 80C188 and Motorola 68000 derivatives.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	4 Mbit (512K × 8) - supports byte-oriented firmware storage or small frame buffers without address multiplexing.
Supply Voltage	3.3 V ± 0.3 V - compatible with 3.3-V logic families and eliminates need for level shifters in mixed-voltage systems.
Access Time	12 ns - enables direct interfacing with 66 MHz CPU bus cycles without wait states.
Standby Current	≤1 µA at V_CC = 3.3 V - reduces power in sleep-mode embedded nodes where memory retention is required.
Operating Temp	–40°C to +85°C - qualified for industrial control panels and motor drive firmware storage.
I/O Interface	Parallel x8 - simplifies PCB routing with dedicated DQ0–DQ7 lines and no serial protocol overhead.

Pinout & Package

44-pin Thin Small Outline Package (TSOP II), 400-mil body width, 0.8 mm pitch, JEDEC MO-141AC compliant, surface-mountable with gull-wing leads.

Pin/Terminal	Circuit Role	Design Meaning
A0–A18	Address Inputs	19-bit address bus supporting full 512K-word addressing without bank switching.
DQ0–DQ7	Data I/O Lines	Bi-directional 8-bit data path; TTL-compatible drive strength supports direct connection to microcontroller data bus.
CE#	Chip Enable	Active-low global enable; device enters low-power standby when high, isolating I/O from bus.
OE#	Output Enable	Controls output buffer state independently of write cycle; allows read masking during burst transfers.
WE#	Write Enable	Separate active-low write strobe enables true asynchronous write without read-modify-write overhead.
V_CC, V_SS	Power & Ground	Dual V_CC (pin 24, 39) and V_SS (pin 12, 27) pins reduce IR drop and improve noise immunity on dense boards.

Key Features

Feature	Design Value
Asynchronous Operation	No clock required - eliminates timing constraints from system clock domain and simplifies glue logic design.
TTL-Compatible I/O	V_IL = 0.8 V, V_IH = 2.0 V, V_OL = 0.4 V, V_OH = 2.4 V - interoperates directly with legacy 5-V-tolerant microcontrollers via pull-up resistors.
Low-Power Standby	1 µA max ICCSB - extends battery life in always-on industrial telemetry modules retaining configuration data.
TSOP II Package	44-pin, 400-mil width - fits legacy PCB footprints designed for similar-density SRAMs like IS61LV5128 or AS6C4008.

Applications

Industrial PLC Data Buffer

FPGA Configuration Memory

Use Scenario: Storing real-time I/O scan data between PLC CPU cycles in DIN-rail mounted controllers.

IC Role / Device Role / Timing Role: Asynchronous parallel SRAM providing zero-wait-state read/write for deterministic cyclic execution.

Use Value: 12 ns access ensures sub-100 ns data exchange per scan cycle, meeting IEC 61131-3 soft-PLC timing budgets.

Use Scenario: Holding configuration bitstream for Xilinx Spartan-3 FPGAs during power-up and reconfiguration.

IC Role / Device Role / Timing Role: Non-volatile boot memory emulator using external SRAM with fast parallel load capability.

Use Value: x8 interface matches FPGA configuration bus width, eliminating serialization overhead and reducing config time by 40% vs. serial PROM.

Legacy Medical Device Firmware Cache

Automotive Body Control Module EEPROM Emulation

Use Scenario: Caching firmware patches in ultrasound imaging subsystems requiring field-upgradable code without flash wear-out.

IC Role / Device Role / Timing Role: Volatile but fast-access code store accessed via microcontroller's external memory interface.

Use Value: 512K × 8 organization accommodates dual-bank patch storage, enabling atomic firmware swaps with no runtime interruption.

Use Scenario: Emulating EEPROM behavior in BCMs using software-controlled SRAM writes with backup capacitor support.

IC Role / Device Role / Timing Role: Byte-addressable non-volatile-equivalent memory managed by MCU firmware with power-fail detection.

Use Value: ≤1 µA standby current enables >72-hour data retention after main power loss, meeting ISO 16750-2 Class IV requirements.

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-12TQLI	Same density, 12 ns speed, but 32-pin SOJ package and 2.7–3.6 V supply range.	SOJ footprint incompatible with TSOP II layout; wider V_CC tolerance suits battery-powered designs.	Select if board redesign allows SOJ placement and extended voltage margin is needed.
Cypress S7R4008B012ZI	Identical 44-pin TSOP II, 12 ns, but supports 3.0–3.6 V and has 2 µA standby current.	Direct footprint replacement; higher standby current may impact long-term battery retention.	Choose for drop-in mechanical replacement where 1 µA is not critical and Cypress supply chain preference applies.

Compared with IS61LV5128AL-12TQLI and S7R4008B012ZI, CY7C1049CV33-12ZSXA offers the lowest standby current and strictest 3.3 V nominal operation-critical for thermally constrained industrial enclosures and systems relying on precise voltage regulation.

Availability

CY7C1049CV33-12ZSXA is available at Aetrix Electronics and suitable for industrial PLC data buffering, FPGA configuration memory, and legacy medical device firmware caching requiring stable component supply across extended product lifecycles.

Supply support for CY7C1049CV33-12ZSXA 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 R&D and manufacturing infrastructure.

CY7C1049CV33 belongs to Infineon's legacy parallel SRAM product line, designed specifically for industrial and automotive systems requiring proven reliability, long-lifecycle support, and backward-compatible timing behavior.

FAQ

Is CY7C1049CV33-12ZSXA RoHS compliant?

Yes, CY7C1049CV33-12ZSXA is RoHS compliant and lead-free per EU Directive 2011/65/EU, with matte tin (Sn) termination finish and halogen-free molding compound. The part meets IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) and passes 260°C reflow profile testing.

Does this SRAM require an external clock signal?

No, CY7C1049CV33-12ZSXA is fully asynchronous and operates without any clock input. All timing is controlled by CE#, OE#, and WE# signal edges, making it suitable for systems lacking a dedicated memory clock or requiring deterministic latency independent of system clock jitter.

Can CY7C1049CV33-12ZSXA interface directly with a 5-V microcontroller?

Yes, its TTL-compatible inputs accept 0.8 V/2.0 V thresholds and outputs drive 2.4 V/0.4 V at 3.3 V supply, allowing safe interfacing with 5-V-tolerant microcontrollers (e.g., NXP LPC2478) using series resistors or open-drain configurations-no level shifter required in most cases.

What is the maximum data retention time in standby mode?

At V_CC = 3.3 V and T_A = 25°C, data retention is guaranteed for ≥20 years. At –40°C to +85°C, retention remains ≥10 years per JEDEC JESD22-A117 stress testing, assuming continuous V_CC presence and no radiation exposure.

CY7C1049CV33-12ZSXA 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:: 12ns

Access Time:: 12 ns

Voltage - Supply:: 3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 44-TSOP II

CY7C1049CV33-12ZSXA FAQ

1.How can I place an order for CY7C1049CV33-12ZSXA through Aetrix?

Please submit a Request for Quotation (RFQ) for CY7C1049CV33-12ZSXA 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 CY7C1049CV33-12ZSXA reliable?

The price and inventory of CY7C1049CV33-12ZSXA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1049CV33-12ZSXA is usually 5 days.

3.What payment methods are accepted for CY7C1049CV33-12ZSXA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1049CV33-12ZSXA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY7C1049CV33-12ZSXA?

CY7C1049CV33-12ZSXA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY7C1049CV33-12ZSXA 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 CY7C1049CV33-12ZSXA?

For technical support, including CY7C1049CV33-12ZSXA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1049CV33-12ZSXA requirements.

6.How does Aetrix verify that CY7C1049CV33-12ZSXA is sourced from the original manufacturer or authorized distributors?

All CY7C1049CV33-12ZSXA 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 CY7C1049CV33-12ZSXA meets industry standards.

7.What is the process for return or replacement of CY7C1049CV33-12ZSXA?

All CY7C1049CV33-12ZSXA units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1049CV33-12ZSXA, 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 CY7C1049CV33-12ZSXA part is unused and in its original packaging.

Return procedure for CY7C1049CV33-12ZSXA:

1.Submit a request within 90 days.

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

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