> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Adafruit SPI FLASH Breakout W25Q128 - 128 MBit / 16 MByte

**Type:** Product page · **SKU:** ADA5643 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/adafruit-spi-flash-breakout-w25q128-128-mbit-16-mbyte.html ([markdown](https://core-electronics.com.au/adafruit-spi-flash-breakout-w25q128-128-mbit-16-mbyte.html.md))

Sometimes you need a little extra storage for your microcontroller projects: for files, images, fonts, audio clips, etc. If you need lots of space, like...

## Pricing

- **Price:** $9.50 (inc GST) — $8.64 AUD, exc GST
- **Quantity discounts:** 10+ $8.38 (exc GST) · 50+ $8.20 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 19 and Aug 24.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA5643:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/ADA5643:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

Sometimes you need a little extra storage for your microcontroller projects: for files, images, fonts, audio clips, etc. If you need lots of space, like in the gigabytes, [Adafruit always recommend an SD card](https://core-electronics.com.au/microsd-card-breakout-board.html) because you can easily plug it into a computer to edit files. But sometimes you don't need whole gigabytes, you just need a megabyte or two, with the lower cost and power usage that comes with it. That's when Adafruit recommend an **Adafruit SPI FLASH Breakout** such as this one that is fitted with a **W25Q128 - 128 Mbit / 16 MByte** chip.

[Compared to Adafruit's QSPI breakouts](https://core-electronics.com.au/search?q=qspi+breakout), this one is single-channel SPI only...BUT it comes with level shifting so it can be used safely with 3V or 5V power and logic. Since Adafruit needed to add level shifting, the chip is pre-wired into single channel "SPI" mode, with level shifters so you can use it with 3V or 5V logic easily. You also get a 3.3V regulator and a pullup on CS.

Note that the chips come blank, and do not have a wear-leveling subsystem. You can address them as a flat memory space or, if you like, format them with a filesystem like littleFS or FAT. Great for use with data-logging or storage needs where you are OK with doing the management yourself - or if you are adding external memory to an older chip that would like 5V-compatibility.

[In Arduino, Adafruit have the Adafruit\_SPIFlash library](https://github.com/adafruit/Adafruit_SPIFlash) that can be used to interface with this chip. Comes with a bit of header that can be used to solder in and plug into a breadboard if desired.

## Technical Details 

- [W25Q128JV Datasheet and technical documentation](https://www.winbond.com/hq/product/code-storage-flash-memory/serial-nor-flash/?__locale=en&partNo=W25Q128JV)

Product Dimensions: 20.3mm x 17.7mm x 3.5mm / 0.8" x 0.7" x 0.1"

Product Weight: 1.4g / 0.0oz

![RoHS 2 2011 65 EU Compliant](https://core-electronics.com.au/attachments/localcontent/RoHS2_2011_65_EU_7356c5574c.svg)![RoHS 2 2015 863 EU Compliant](https://core-electronics.com.au/attachments/localcontent/RoHS2_2015_863_EU_86773f57f9.svg)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/A/D/ADA5643-1.jpg)