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Non-volatile memory for storing and executing code. Firmware, boot code, and critical data stay intact without power, with fast random access for XIP operation.

Serial and parallel NOR Flash from 4Mb to 2Gb, seven brands, datasheets and fast quotes.

Density4Mb – 2Gb
Voltage1.8 / 2.5 / 3V
Endurance100K cycles
Retention20 years
AccessRandom / XIP

Why NOR Flash

⚡What Is NOR Flash

Every cell is individually addressable, giving NOR Flash its fast random reads — the reason boot code and firmware live in NOR Flash. Modern parts support SPI, Dual, and Quad SPI, with 100K cycles and 20-year retention.

⇄Serial vs Parallel

Serial (SPI) keeps pins and board cost low — from 8 pins — and Quad SPI delivers the speed most designs need. Parallel suits legacy, high-reliability platforms. For new designs, serial is the default.

⚖NOR vs NAND

NOR for executing code and fast boot. NAND for storing large data at the lowest cost per gigabyte. Many products use both. Send us your application and we will recommend a part.

Product Line

Seven leading suppliers, 4Mb to 2Gb, 1.8V and 2.5/3V families. Click a brand to view its full NOR Flash listing.

HIGH PERFORMANCE · AUTOMOTIVE
Macronix

Global NOR Flash leader. High performance, high reliability, and low power for smartphones, automotive, and IoT.

View Macronix NOR Flash →
Mid-density · Cost-effective
Winbond

Medium-capacity specialist known for cost-effectiveness and stable quality — mobile phones, TVs, set-top boxes.

View Winbond NOR Flash
Consumer · Fast response
GigaDevice

Leading NOR Flash supplier in Mainland China. Cost-effective parts, fast market response — strong in TWS and AMOLED.

View GigaDevice NOR Flash
SONOS · Ultra low power
PUYA

SONOS-based NOR Flash with ultra-low power, wide voltage range, and fast erase and read. Bluetooth, IoT, AMOLED, industrial.

View PUYA NOR Flash
Foundry direct · Industrial grade
XMC

4Mb to 512Mb industrial-grade NOR Flash in 1.8V and 3V families, from SOP8 to TFBGA24 and WLCSP.

View XMC NOR Flash
Full density range · 4Mb to 1Gb
BOYA

Cost-effective 3V NOR Flash from 4Mb to 1Gb, in SOP8, TSSOP8, USON8, DFN, WSON8, and TFBGA.

View BOYA NOR Flash
Up to 2Gb · Small packages
XTX

4Mb to 2Gb including high-density Quad SPI in BGA24, with 1.8V and wide-VCC families and compact DFN8/WSON8.

View XTX NOR Flash
Can't find the exact part number? Send us your memory map — we will cross-reference equivalents across all seven brands and reply with datasheets and pricing.

Typical Applications

☁IoT and Smart Devices

Firmware and boot code storage in connected sensors, gateways, and smart home products.

⚙Automotive Electronics

Boot and diagnostic code in ECUs, instrument clusters, and body control modules.

▣Displays

AMOLED and TDDI driver firmware on compact, low-power SPI NOR Flash.

♪TWS Earphones

Firmware storage in a tiny footprint where every milliwatt and square millimeter counts.

⇅Networking and Set-top Boxes

Fast random reads shorten boot time in routers, switches, and set-top platforms.

⚒Industrial Control

High-endurance NOR Flash keeps code storage reliable in harsh environments.

NOR Flash FAQ

Q1
What is NOR Flash used for?

NOR Flash stores code that a processor must read quickly and reliably, such as boot code, firmware, and operating system images. It is also used for small amounts of data that must survive power loss.

Q2
What is the difference between SPI NOR Flash and parallel NOR Flash?

SPI NOR Flash uses a small serial interface with few pins, which lowers cost and board space, and supports Dual and Quad SPI for higher speed. Parallel NOR Flash uses a wide x8 or x16 bus with the lowest read latency but many more pins, so it is mostly used in legacy or high-reliability designs.

Q3
Can NOR Flash execute code directly?

Yes. NOR Flash supports random access reads, so a processor can execute code directly from the memory, a technique called execute-in-place (XIP). This is one of the main reasons NOR Flash is chosen for boot and firmware storage.

Q4
Which NOR Flash capacity should I choose?

For simple firmware storage, 4Mb to 32Mb is usually enough. Display, networking, and automotive applications often use 64Mb to 512Mb. If your firmware image plus data logging exceeds 1Gb, consider splitting storage between NOR Flash for code and NAND Flash for data. Our team can review your memory map and recommend a part.

Q5
How do I get a quote or a datasheet?

Click the brand you need above to browse models, or contact us with your required density, voltage, package, and temperature grade. We provide datasheets, samples, and fast quotes.

Related Products

Building a complete memory subsystem? These categories pair naturally with NOR Flash.

Code & parameter storage
EEPROM

Byte-writable non-volatile storage for calibration data, counters, and small parameter sets.

View EEPROM →
High-density data storage
NAND Flash

The low cost-per-gigabyte partner to NOR Flash for data logging and media storage.

View NAND Flash →
Working memory
RAM Memory

SRAM and pseudo-SRAM for code shadowing and high-speed data buffering.

View RAM Memory →
Non-volatile RAM
FRAM

Fast write, near-unlimited endurance, and zero-power retention for critical data.

View FRAM →
Embedded storage
eMMC

Managed NAND with a standard controller interface for mainstream embedded storage.

View eMMC →
Full catalog
Product Center

Browse all memory, oscillator, MCU, analog, and sensor lines in one place.

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Application Articles

See how our NOR Flash parts perform in real designs, from our engineering blog.

APPLICATION NOTE

Why a VFD control board executes code from external NOR flash, and how the PY25Q128LA-WXH-IR fits with 133MHz Quad SPI read, 0.5ms page write, and 16MB of code space.

Read article →
APPLICATION NOTE

How a smart water meter runs six years on one battery cell, with 0.5μA deep power-down, 20-year data retention, and OTP regions protecting calibration data.

Read article →

Request a Quote

Tell us the density, voltage, package, and quantity you need. Our team replies with pricing, stock, and datasheets within one business day.

Contact Us for NOR Flash Pricing →