{"product_id":"pcf8574-i2c-interface-8bit-module-avr-stm8-c8051f-for-arduino","title":"PCF8574 I2C Interface 8bit Module AVR STM8 C8051F For Arduino","description":"\u003cdiv class=\"description--wrap--LscZ0He\" id=\"nav-description\"\u003e\n\u003cdiv class=\"extend--wrap--yXwoDbO\"\u003e\n\u003cdiv class=\"extend--content--VuIQZia\"\u003e\n\u003cdiv\u003e\n\u003cdiv id=\"product-description\" data-spm=\"1000023\" class=\"description--product-description--Mjtql28\" data-pl=\"product-description\"\u003e\n\u003cdiv data-spm-anchor-id=\"a2g0o.detail.1000023.i0.5d23gB5tgB5tvH\"\u003e\n\u003cdiv id=\"product-description\" class=\"product-description\"\u003e\n\u003cp align=\"center\"\u003e\u003cspan\u003ePCF8574 I2C Interface 8bit IO MCU Expansion Board I\/O Expander I2C Bus Evaluation Development Module AVR STM8 C8051F For Arduino\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eProduct Description:\u003c\/p\u003e\n\u003cp\u003ePCF8574 is an IO port expansion module that uses the I2C protocol. It has three address pins and can allocate up to 8 addresses simultaneously. The board includes 8-bit bidirectional IO ports (P0-P7), each of which can be separately assigned as an input or output without the need for data direction control signals. When powered on, all IO levels default to high level\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S5cf759cf75a142beba02a903db9ae9d4s.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eSupply voltage: 3.3V\/5V\u003c\/p\u003e\n\u003cp\u003eCommunication interface: I2C interface, 8-bit parallel port\u003c\/p\u003e\n\u003cp\u003eInterface type: pin or socket\u003c\/p\u003e\n\u003cp\u003eInterrupt output: connected to MCU interrupt pin, low level is valid\u003c\/p\u003e\n\u003cp\u003eI2C Address Setting Instructions\u003c\/p\u003e\n\u003cp\u003eThe default I2C address of the module is 0x20\u003c\/p\u003e\n\u003cp\u003eThe I2C address can be set to 8 different addresses through A0-A2, as shown in the figure\u003c\/p\u003e\n\u003cp\u003eAll jumpers are set on the \"-\" side, meaning LOW is a low level\u003c\/p\u003e\n\u003cp\u003eThe \"+\" side is HIGH, which is a high level\u003c\/p\u003e\n\u003cp\u003eThe range of addresses from 0x20 to 0x27 is shown in the table below, which means that one development board can simultaneously connect 8 PCF8574 modules\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sb73e9d0e550e4839abd6a3767a5e7c22x.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sdce7232f7a1d43878a12e44820a61188T.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S0743d6b1c8ae40e890a373aaba30d33bt.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sdc642989e6fc4d33bed711c6de65c3558.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sfabffd7c4072471db445130dd17ad41ap.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S5676d29173d34850a5b2a34e55d15367m.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ciframe class=\"extend--iframe--to7hHIV\" data-spm-anchor-id=\"a2g0o.detail.0.i1.5d23gB5tgB5tvH\" data-spm-act-id=\"a2g0o.detail.0.i1.5d23gB5tgB5tvH\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Generic","offers":[{"title":"Default Title","offer_id":56659011830085,"sku":"232-3370","price":1.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/9599\/9301\/files\/PCF8574.png?v=1765871925","url":"https:\/\/circuitverse.co.uk\/products\/pcf8574-i2c-interface-8bit-module-avr-stm8-c8051f-for-arduino","provider":"CIRCUITverse.co.uk","version":"1.0","type":"link"}