What is the Additional Feature ?

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

What is the Terminal Form

Occurring at or forming the end of a series, succession, or the like; closing; concluding.

What is the Terminal Pitch

The center distance from one pole to the next.

What is the Max Output Voltage

The maximum output voltage refers to the dynamic area beyond which the output is saturated in the positive or negative direction, and is limited according to the load resistance value.

What is the Packaging

semiconductor package is a shell that encases and protects semiconductor components or integrated circuits, made from metal, plastic, glass, or ceramic.

Deyee Tech Limited - Global Electronic Component Distributor | IC, Aerospace, Automotive Electronics

Name: PM25LV040-33SCE
Brand: PMC-Sierra
SKU: PM25LV040-33SCE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Home > Products > Integrated Circuits (ICs) > Audio Special Purpose

PMC-Sierra PM25LV040-33SCE

Part No.:: PM25LV040-33SCE

Manufacturer:: PMC-Sierra

Category:: Audio Special Purpose

Package:

Datasheet:: PM25LV040-33SCE.pdf

Description:: 4M-bit (512K x 8) SPI NOR Flash memory chip

Quantity:: RFQ Add To RFQ list Buy Now Add To Cart

Unit Price:$0

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Product details

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The PM25LV040-33SCE is a 4M-bit (512K x 8) Serial Peripheral Interface (SPI) NOR Flash memory chip manufactured with CMOS technology.

This device operates at a clock frequency of 33MHz and comes in an SOIC-8 package (208 mil body width) with 1.27mm pin pitch

Key features include:

Memory Organization: 512K x 8 (4M-bit)
Interface: SPI (Serial Peripheral Interface)
Operating Voltage: 3V/3.3V (2.7V to 3.6V range)
Endurance: 100,000 write/erase cycles
Data Retention: Minimum 20 years
Package: 8-pin JEDEC SOIC (Standard Small Outline Integrated Circuit)

Functional Characteristics

SPI Interface: The device uses a standard 3-wire SPI interface for communication, compatible with both SPI Mode 0 and Mode 3 operations.
Memory Architecture: The flash memory is organized into sectors and blocks,
with the unique capability to configure 4KB memory into four 1KB blocks. This allows for flexible memory management and protection against accidental erasures or writes.
Write Protection: Features both hardware and software write protection mechanisms to prevent unintended modifications to critical data.
Performance: With a 33MHz operating frequency, the device offers sufficient speed for code execution and data storage applications in embedded systems.
Low Power Consumption: Designed for low voltage operation (2.7V-3.6V), making it suitable for power-sensitive applications.

Applications

The PM25LV040-33SCE and its series are widely used in various electronic systems requiring non-volatile memory storage:

Computing Systems: BIOS storage for PCs and other computing devices
Display Technologies: LCD monitors and medical monitoring equipment
Storage Devices: Hard disk drives and optical storage (ODD) systems
Networking: Wireless LAN systems and network equipment
Embedded Systems: Industrial control systems, automotive electronics, and consumer devices requiring firmware storage
Legacy Systems: The device is particularly useful for maintaining or upgrading older systems due to its drop-in replacement capability with other members of the PM25LV series.

PM25LV Series Comparison

The PM25LV series offers a range of density options with similar pinouts and packages, allowing for easy upgrades or downgrades without layout changes.

Here's a comparison of key series members:

Model	Density	Organization	Speed Grade	Package	Key Features
PM25LV512	512K-bit	64K x 8	Various	SOIC-8	Entry-level SPI flash
PM25LV010	1M-bit	128K x 8	Various	SOIC-8	Basic SPI flash
PM25LV020	2M-bit	256K x 8	Various	SOIC-8	Mid-density option
PM25LV040	4M-bit	512K x 8	33MHz	SOIC-8	Featured device
PM25LV080	8M-bit	1M x 8	Various	SOIC-8	Higher density
PM25LV016	16M-bit	2M x 8	Various	SOIC-8	Top density in series

Pm25LV010-33SC

Pm25LV010-33SCE

Pm25LV020-33SCP

m25LV020-33SCE

Pm25LV040-33SC

Pm25LV040-33SCE

Pm25LV010-33QC

Pm25LV010-33QCE

Pm25LV020-33QC

Pm25LV020-33QCE

Pm25LV040-33QC

Pm25LV040-33QCE

Pm25LV040-33BC

Pm25LV040-33BCE

All devices in the series share these common characteristics:

8-pin JEDEC SOIC package for consistent footprint
2.7V to 3.6V operating voltage range
SPI interface compatibility
Hardware and software write protection
Drop-in replacement capability within the series

Availability and Alternatives

As of current market information (2025-05-14):

The PM25LV040-33SCE has limited availability with 4,910 total units listed from 2 suppliers in the US
Alternative variants like PM25LV040-33QCE are available through distributors
The device may be transitioning to obsolete status as it was originally released around 2004

Technical Considerations

When implementing the PM25LV040-33SCE:

Layout Compatibility: The SOIC-8 package and pinout are standardized, allowing easy replacement with other PM25LV series devices if density needs change.
Memory Protection: The configurable block protection (4KB divided into four 1KB blocks) provides flexibility for protecting critical code sections.
Performance Limitations: While sufficient for many applications, the 33MHz speed may be limiting for high-performance systems compared to newer flash devices.
Legacy Support: The device is particularly valuable for maintaining or upgrading older systems designed around this memory family

Package/Case:

Packaging:

Series:

Product Status:

Function:

Applications:

Number of Channels:

Interface:

Voltage-Supply:

Operating Temperature:

Specifications:

Mounting Type:

Category:: Audio Special Purpose

Datasheet:: PM25LV040-33SCE.pdf

1. How to order PM25LV040-33SCE on Deyee Tech Limited?

Currently, Deyee Tech Limited only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.

2. How does Deyee Tech Limited guarantee that PM25LV040-33SCE is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the PM25LV040-33SCE. All suppliers must pass our qualification reviews before they can publish their products including PM25LV040-33SCE on Deyee Tech Limited; we pay more attention to the channels and quality of PM25LV040-33SCE products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.

3. Are the PM25LV040-33SCE price and inventory displayed accurate?

The price and inventory of PM25LV040-33SCE fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

4. What forms of payment are accepted?

Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.

Warm Tips: Some orders in certain payment forms may require handling fee.

5. How is the shipping arranged?

Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.

Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.

Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.

6. What is the process for return or replacement of PM25LV040-33SCE?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the PM25LV040-33SCE we delivered, we will accept the replacement or return of the PM25LV040-33SCE only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of PM25LV040-33SCE.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations

7.How to contact us to get technical supports, such as PM25LV040-33SCE pin diagram, PM25LV040-33SCE datasheet?

If you need any after-sales service, please do not hesitate to contact us.

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Part Number	PM25LV040-33SCE
Manufacturer	PMC-Sierra
Package/Case
Packaging
Series
Product Status
Function
Applications
Number of Channels
Interface
Voltage-Supply
Operating Temperature
Specifications
Mounting Type