{"product_id":"adafruit-spi-flash-sd-card-xtsd","title":"Adafruit SPI Flash SD Card - XTSD","description":"\u003cp\u003eThis breakout is for a fascinating chip - it looks like an SPI Flash storage chip (like the \u003ca href=\"\/zh\/products\/gd25q16-2mb-spi-flash-in-8-pin-soic-package\"\u003eGD25Q16\u003c\/a\u003e) but it's really an SD card, in an SMT chip format. What that means is that you wire up like an SD card breakout, and use the SD card libraries you already have for your microcontroller. For example, you can use the built-in \u003ca href=\"https:\/\/www.arduino.cc\/en\/reference\/SD\"\u003eSD library in Arduino\u003c\/a\u003e, or for \u003ca href=\"https:\/\/learn.adafruit.com\/micropython-hardware-sd-cards\"\u003eCircuitPython we have an SD card library\u003c\/a\u003e. The breakout will act just like a 4 GB-sized card with FAT formatting (it's pre-formatted).\u003c\/p\u003e\n\u003cp\u003eYou might be wondering why you'd want such a thing - after all you can't plug it into a computer to get the files off like \u003ca href=\"\/zh\/products\/sandisk-microsd-card-class-10-a1\"\u003eMicroSD cards\u003c\/a\u003e. For some use cases, such as data logging in a high-vibration device where you don't want the SD card to come loose, or when you need to reduce the size, or when the microcontroller provides a USB mass storage interface, this chip could be very useful.\u003c\/p\u003e\n\u003cp\u003eCompared to plain SPI flash, this NAND memory chip handles all the wear levelling and ECC calculation. You don't have to manually erase blocks; you just write and read them like you would with any SD card. You can clock it up to 50 MHz, and the 'write speed class' is 8 (although you may not be able to get that fast with plain 1-bit SPI compared to SDIO).\u003c\/p\u003e\n\u003cp\u003eWe made this breakout to be a quick start for this chip. We wired the chip in \"SPI\" mode with a level shifter, so you can use it with 3V or 5V logic easily. You also get a 3.3V regulator and a pullup on CS. Wire up the SPI pins to your microcontroller, use your favourite SD library, and you'll be ready to rock in minutes!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe board comes in three sizes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e512MB\u003c\/li\u003e\n\u003cli\u003e2GB\u003c\/li\u003e\n\u003cli\u003e4GB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote\u003c\/strong\u003e: \u003cstrong\u003ePlease select which size board you want before adding it to the cart\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/8qfeyg05nio?si=30PV7Csr64SDMWAn\u0026amp;start=84\" height=\"315\" width=\"560\" allowfullscreen=\"allowfullscreen\" referrerpolicy=\"strict-origin-when-cross-origin\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCapacity: \u003cspan\u003e4Gbit (512MByte) \/ 16Gbit (2GByte) \/ 32Gbit (4 GByte)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eOperation Conditions Temperature Range: Ta = \u003cstrong\u003e-30 to +85°C\u003c\/strong\u003e \/ \u003cspan\u003e\u003cstrong\u003e-25 to +85°C\u003c\/strong\u003e \/ \u003cstrong\u003e-25 to +85°C\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eStorage Conditions Temperature Range: Tstg = \u003cstrong\u003e-40 to +85°C\u003c\/strong\u003e \/ \u003cspan\u003e\u003cstrong\u003e-40 to +150°C\u003c\/strong\u003e \/ \u003cstrong\u003e-40 to +150°C\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eSupports up to 50Mhz clock frequency\u003c\/li\u003e\n\u003cli\u003eBuilt-in HW ECC Engine and highly reliable NAND management mechanism\u003c\/li\u003e\n\u003cli\u003eWrite speed up to class 8\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions: 21.5mm x 17.7mm x 2.9mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWeight: 1.5g\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"512MB","offer_id":50847239209233,"sku":"ADA4899","price":8.7,"currency_code":"USD","in_stock":false},{"title":"2GB","offer_id":50847239242001,"sku":"ADA6038","price":10.5,"currency_code":"USD","in_stock":false},{"title":"4GB","offer_id":50847239274769,"sku":"ADA6039","price":12.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/adafruit-spi-flash-sd-card-xtsd-adafruit-ada4899-43182272118979.jpg?v=1735209003","url":"https:\/\/abcd3032.myshopify.com\/zh\/products\/adafruit-spi-flash-sd-card-xtsd","provider":"Tayyab Zak","version":"1.0","type":"link"}