Why 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 (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 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.
Global NOR Flash leader. High performance, high reliability, and low power for smartphones, automotive, and IoT.
View Macronix NOR Flash →Medium-capacity specialist known for cost-effectiveness and stable quality — mobile phones, TVs, set-top boxes.
View Winbond NOR FlashLeading NOR Flash supplier in Mainland China. Cost-effective parts, fast market response — strong in TWS and AMOLED.
View GigaDevice NOR FlashSONOS-based NOR Flash with ultra-low power, wide voltage range, and fast erase and read. Bluetooth, IoT, AMOLED, industrial.
View PUYA NOR Flash4Mb to 512Mb industrial-grade NOR Flash in 1.8V and 3V families, from SOP8 to TFBGA24 and WLCSP.
View XMC NOR FlashCost-effective 3V NOR Flash from 4Mb to 1Gb, in SOP8, TSSOP8, USON8, DFN, WSON8, and TFBGA.
View BOYA NOR Flash4Mb to 2Gb including high-density Quad SPI in BGA24, with 1.8V and wide-VCC families and compact DFN8/WSON8.
View XTX NOR FlashTypical Applications
Firmware and boot code storage in connected sensors, gateways, and smart home products.
Boot and diagnostic code in ECUs, instrument clusters, and body control modules.
AMOLED and TDDI driver firmware on compact, low-power SPI NOR Flash.
Firmware storage in a tiny footprint where every milliwatt and square millimeter counts.
Fast random reads shorten boot time in routers, switches, and set-top platforms.
High-endurance NOR Flash keeps code storage reliable in harsh environments.
NOR Flash FAQ
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.
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.
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.
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.
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.
Byte-writable non-volatile storage for calibration data, counters, and small parameter sets.
View EEPROM →The low cost-per-gigabyte partner to NOR Flash for data logging and media storage.
View NAND Flash →SRAM and pseudo-SRAM for code shadowing and high-speed data buffering.
View RAM Memory →Fast write, near-unlimited endurance, and zero-power retention for critical data.
View FRAM →Managed NAND with a standard controller interface for mainstream embedded storage.
View eMMC →Browse all memory, oscillator, MCU, analog, and sensor lines in one place.
View Product Center →Application Articles
See how our NOR Flash parts perform in real designs, from our engineering blog.
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 →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.
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