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8채널 TCA9548A I2C 멀티플렉서 / I2C 확장모듈 / TCA9548A I2C Multiplexer / CJMCU-9548
판매가격 : 5,500원 (부가세 포함)
상품코드 :[4008]LEO-CJMCU-SGW-TCA9548
제조사 :CJMCU
구매수량 : 일시품절된 상품입니다. (주문: 053-588-4080)
총 금액 :

  • 상품상세
  • 관련상품
  • 배송/교환/반품 안내
  • 상품리뷰

TCA9548A 기반의 8채널 I2C 멀티플렉서입니다. I2C 센서를 여러개 사용해야할 때 사용할 수 있습니다.

본 모듈은 같은 주소의 I2C장치를 최대 8개까지 연결할 수 있습니다. 멀티플렉스는 자체 I2C주소 0x70을

가지고 있으며 ~0x77까지 변경해줄 수 있습니다.


특징 (Features) :

  • I2C 멀티플렉서

  • TCA9548A 기반

  • 3.3v/5v

  • 최대 64개의 I2C 사용가능

 

구성품 (Includes) :

  • TCA9548A 모듈 x 1

  • Male 타입 12핀 헤더 x 2 




You just found the perfect I2C sensor, and you want to wire up two or three or more of them to your Arduino when you realize "Uh oh, this chip has a fixed I2C address, and from what I know about I2C, you cannot have two devices with the same address on the same SDA/SCL pins!" Are you out of luck? You would be, if you didn't have this ultra-cool TCA9548A 1-to-8 I2C multiplexer!

Finally, a way to get up to 8 same-address I2C devices hooked up to one microcontroller - this multiplexer acts as a gatekeeper, shuttling the commands to the selected set of I2C pins with your command.

Using it is fairly straight-forward: the multiplexer itself is on I2C address 0x70 (but can be adjusted from 0x70 to 0x77) and you simply write a single byte with the desired multiplexed output number to that port, and bam - any future I2C packets will get sent to that port. In theory, you could have 8 of these multiplexers on each of 0x70-0x77 addresses in order to control 64 of the same-I2C-addressed-part.

Like all Adafruit breakouts, we put this nice chip on a breakout for you so you can use it on a breadboard with capacitors, and pullups and pulldowns to make usage a snap. Some header is required and once soldered in you can plug it into a solderless-breadboard. The chip itself is 3V and 5V compliant so you can use it with any logic level.



  • Weight: 1.8g
  • Selectable I2C address 0x70-0x77

Product Dimensions: 21.6mm x 31.6mm x 2.7mm 

Adafruit TCA9548A 1-to-8 I2C Multiplexer Breakout

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