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●新版 ST25DV16K I2C RFID EEPROM 分線板 (ada4701)STEMMA QT / Qwiic
NT$350
運費NT$50
條碼429221771
產品說明2

※本產品原廠代理從國外進口,有些交期較長,下訂前請詢問!

Adafruit ST25DV16K I2C RFID EEPROM Breakout - STEMMA QT / Qwiic(ada4701)

新版 ST25DV16K I2C RFID EEPROM 分線板 (ada4701)STEMMA QT / Qwiic

新版本STEMMA QT 影片(2020/8/6)15分35秒開始:https://youtu.be/LVZNXxIgytI
(2020/11/24更新):
https://youtu.be/Jn-yGtRi_gs

What is STEMMA QT 影片說明 https://youtu.be/6GXRRuFuFy0

Description
  This RFID tag is really unique: it works with mobile phones just like other RFID tags, but you can reprogram it over I2C. The tag shows up as an ISO/IEC 15693 (13.56MHz) chip which is readable by phones and tablets. This could be interesting in situations where you want a tag that can be re-written dynamically when connected to a controller. For example, we did a test where we had a microcontroller write different URLs a few seconds apart, and the mobile phone detected the different URLs one after the other./這個RFID標籤非常獨特:它像其他RFID標籤一樣適用於手機,但你可以通過I2C重新程式設計。標籤顯示為 ISO/IEC 15693 (13.56MHz) 晶片,手機和平板電腦均可讀取。在您希望在連接到控制器時可以動態重寫的標記的情況下,這可能很有趣。例如,我們做了一個測試,讓微控制器在幾秒鐘內寫入不同的URL,手機一個接一個地檢測到不同的URL。
  Note that the most popular hobby RFID reader/writer chips like the PN532 do not support ISO15693 so you cannot use those to read the ST25DV tag once programmed! We used both Apple and Android phones with success to read the tags./請注意,最流行的業餘愛好RFID讀取器/寫入器晶元(如PN532)不支援ISO15693,因此一旦程式設計,您就無法使用這些晶片來讀取ST25DV標籤!我們成功地使用Apple和Android手機來讀取標籤
  According to the datasheet, one can even use it as an 'I2C to RFID' transfer system to wirelessly send and receive data from mobile devices (you'll need to write a custom app for that kind of project, though)./根據數據表,甚至可以將其用作「I2C到RFID」傳輸系統,以無線方式從行動裝置發送和接收數據(不過,您需要為此類專案編寫自定義應用程式)
  ST has written a handy library that you can easily use to write NFC URLs to the chip over I2C. You cannot use an Arduino UNO (ATmega328p) with the ST25DV library, there's not enough RAM. Please use a Metro M0 or other SAMD chip (or better) to communicate with the ST25DV. There's no Python or CircuitPython library for this chip at this time, only Arduino./意法半導體編寫了一個方便的庫,您可以輕鬆地使用它通過I2C將NFC URL寫入晶元。您不能將Arduino UNO(ATmega328p)與ST25DV庫一起使用,沒有足夠的RAM。請使用Metro M0或其他SAMD晶元(或更好)與ST25DV通信。目前這個晶元沒有Python或CircuitPython庫,只有Arduino。
  To make connections easy, our breakout contains an ST25DV04 chip, support circuitry and even a PCB trace antenna. There's standard 0.100”/ 2.54mm pitch headers for use with a breadboard. Should you wish to avoid soldering, the breakout also includes our Stemma QT connectors (SparkFun Qwiic compatible). Using these handy connectors you can simply plug in the sensor and get rolling with your project. QT Cable is not included, but we have a variety in the shop.
  為了簡化連接,我們的分線器包含一個ST25DV04晶元,支援電路,甚至一個PCB走線天線。有標準的0.100"/ 2.54mm間距針座,可與試驗板一起使用。如果您希望避免焊接,分線器還包括我們的Stemma QT連接器(相容SparkFun Qwiic)。使用這些方便的連接器,您只需插入感測器即可開始您的專案。QT電纜不包括在內,但我們在商店裡有各種各樣的電纜。 
Technical Details
【I2C interface/I2C介面】
  • Two-wire I2C serial interface supports 1MHz protocol
  • Uses multiple I2C addresses 0x2D, 0x53 (user memory) and 0x57 (system memory)
  • Single supply voltage: 1.8V to 5.5V
  • Multiple byte write programming (up to 256 bytes)

【Contactless interface/非接觸式介面】

  • Based on ISO/IEC 15693
  • NFC Forum Type 5 tag certified by the NFC Forum
  • Supports all ISO/IEC 15693 modulations, coding, sub-carrier modes and data rates
  • Custom fast read access up to 53 Kbit/s
  • Single and multiple blocks read (same for Extended commands)
  • Single and multiple blocks write (up to 4) (same for Extended commands)
  • Internal tuning capacitance: 28.5 pF

【Memory/記憶】

  • 16-kbits of EEPROM
  • I2C interface accesses bytes
  • RF interface accesses blocks of 4 bytes
  • Write time:
    • From I2C: typical 5ms for 1 byte
    • From RF: typical 5ms for 1 block
  • Data retention: 40 years
  • Write cycles endurance:
    • 1 million write cycles at 25 °C
    • 600k write cycles at 85 °C
    • 500k write cycles at 105 °C
    • 400k write cycles at 125 °C

【Fast transfer mode/快速傳輸模式】

  • Fast data transfer between I2C and RF interfaces
  • Half-duplex 256-byte dedicated buffer

【Energy harvesting/能量收集】

  • Analog output pin to power external components

【Data protection/數據保護】

  • User memory: 1 to 4 configurable areas, protectable in read and/or write by three 64-bit passwords in RF and one 64-bit password in I2C
  • System configuration: protected in write by a 64-bit password in RF and a 64-bit password in I2C
Product Dimensions: 31.7mm x 25.3mm x 4.6mm / 1.2" x 1.0" x 0.2"
RoHS 2 2011 65 EU Compliant
RoHS 2 2015 863 EU Compliant

 

相關文件

Learn

Primary Guide: Adafruit ST25DV16K I2C RFID EEPROM Breakout
Program RFID over I2C!

 

 

 

Using Web NFC
Work with NFC tags using supported phones and browser(s) 

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本商品上架日期:2022-01-14.
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