{"product_id":"i2c-lcd-module-pcf8574","title":"I2C LCD Module PCF8574 for 16x2 \u0026 20x4 LCD","description":"\u003cp\u003eThe \u003cstrong\u003eI2C LCD Module PCF8574\u003c\/strong\u003e is a compact interface adapter for compatible \u003cstrong\u003e\u003ca href=\"https:\/\/www.chip.pk\/products\/16x2-lcd-1602-character-display-module\" title=\"View 16x2 LCD 1602 Character Display Module\"\u003e16x2\u003c\/a\u003e and \u003ca href=\"https:\/\/www.chip.pk\/products\/2004a-lcd-20x4-character-display\" title=\"2004A 20x4 LCD Display\"\u003e20x4\u003c\/a\u003e character LCDs\u003c\/strong\u003e. It uses a PCF8574-series I\/O expander to provide I2C communication through SDA and SCL, helping reduce the number of controller I\/O connections required for an LCD interface.\u003c\/p\u003e\n\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003ca href=\"https:\/\/www.chip.pk\/products\/2004a-20x4-lcd-i2c\" title=\"View 2004A 20x4 LCD Display with I2C Module\"\u003eI2C LCD Module\u003c\/a\u003e PCF8574 for 16x2 \u0026amp; 20x4 LCD\u003c\/strong\u003e provides a convenient way to connect compatible character LCD displays through an I2C interface instead of using multiple controller I\/O connections for the LCD's parallel interface.\u003c\/p\u003e\n\u003cp\u003eThe module is based on the \u003cstrong\u003ePCF8574 family of 8-bit I\/O expanders for the I2C bus\u003c\/strong\u003e. The current verified Chip.pk stock is fitted with the \u003cstrong\u003ePCF8574T variant\u003c\/strong\u003e. Using the controller-side \u003cstrong\u003eSDA and SCL\u003c\/strong\u003e connections, the module simplifies wiring between a compatible character LCD and an I2C-enabled controller.\u003c\/p\u003e\n\u003cp\u003eAn onboard \u003ccode\u003e103\u003c\/code\u003e trimmer potentiometer provides \u003cstrong\u003eLCD contrast adjustment\u003c\/strong\u003e. The board also includes \u003cstrong\u003eA0, A1 and A2 address-selection pads\u003c\/strong\u003e, which can be used for hardware address configuration where required.\u003c\/p\u003e\n\u003cp\u003eThis product may also be described as an \u003cstrong\u003eI2C LCD adapter, LCD I2C module, I2C serial interface adapter or IIC LCD module\u003c\/strong\u003e. I2C is used as the primary terminology in this listing because the Pakistan keyword research showed stronger search demand for I2C-based terms.\u003c\/p\u003e\n\u003cp\u003eThe actual Chip.pk stock has been physically tested with \u003cstrong\u003e16x2 and 20x4 character LCD modules\u003c\/strong\u003e, confirming compatibility with both tested display formats.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePCF8574-based I2C LCD interface module\u003c\/li\u003e\n\u003cli\u003eCurrent verified stock fitted with \u003cstrong\u003ePCF8574T\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTested with \u003cstrong\u003e16x2 and 20x4 character LCDs\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eProvides I2C communication through SDA and SCL\u003c\/li\u003e\n\u003cli\u003eHelps reduce controller I\/O connections required for LCD interfacing\u003c\/li\u003e\n\u003cli\u003eOnboard \u003ccode\u003e103\u003c\/code\u003e trimmer for LCD contrast adjustment\u003c\/li\u003e\n\u003cli\u003eA0, A1 and A2 address-selection pads\u003c\/li\u003e\n\u003cli\u003eClearly marked GND, VCC, SDA and SCL connections\u003c\/li\u003e\n\u003cli\u003eCompact LCD interface adapter design\u003c\/li\u003e\n\u003cli\u003eSuitable for microcontroller and embedded display projects\u003c\/li\u003e\n\u003cli\u003eNot limited to a single development platform\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eI2C LCD Interface Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIC Family\u003c\/td\u003e\n\u003ctd\u003ePCF8574\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain IC on Current Stock\u003c\/td\u003e\n\u003ctd\u003ePCF8574T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIC Function\u003c\/td\u003e\n\u003ctd\u003e8-bit I\/O expander for I2C bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eI2C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eController-Side Connections\u003c\/td\u003e\n\u003ctd\u003eGND, VCC, SDA, SCL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAddress Configuration\u003c\/td\u003e\n\u003ctd\u003eA0, A1, A2 pads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContrast Adjustment\u003c\/td\u003e\n\u003ctd\u003eOnboard \u003ccode\u003e103\u003c\/code\u003e trimmer potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTested LCD Compatibility\u003c\/td\u003e\n\u003ctd\u003e16x2 and 20x4 character LCD modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLCD Included\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMicrocontroller Board Included\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eTechnical Accuracy Note\u003c\/h3\u003e\n\u003cp\u003eThe current Chip.pk stock supplied for verification uses the \u003cstrong\u003ePCF8574T\u003c\/strong\u003e IC. \u003ccode\u003ePCF8574\u003c\/code\u003e is used at family level in the product title to provide a cleaner and more evergreen product identity, while the actual IC variant is disclosed in the technical specifications.\u003c\/p\u003e\n\u003cp\u003eCompatibility with \u003cstrong\u003e16x2 and 20x4 LCD modules has been physically tested and confirmed on the actual stock\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e16x2 character LCD projects\u003c\/li\u003e\n\u003cli\u003e20x4 character LCD projects\u003c\/li\u003e\n\u003cli\u003eMicrocontroller display interfacing\u003c\/li\u003e\n\u003cli\u003eEmbedded systems\u003c\/li\u003e\n\u003cli\u003eSensor monitoring displays\u003c\/li\u003e\n\u003cli\u003eIoT display projects\u003c\/li\u003e\n\u003cli\u003eElectronics prototyping\u003c\/li\u003e\n\u003cli\u003eDIY electronics projects\u003c\/li\u003e\n\u003cli\u003eEducational electronics projects\u003c\/li\u003e\n\u003cli\u003eApplications requiring reduced LCD interface wiring\u003c\/li\u003e\n\u003cli\u003eArduino 16x2 and 20x4 LCD interface projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eThe actual Chip.pk stock has been tested with \u003cstrong\u003e16x2 and 20x4 character LCD modules\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe controller side uses \u003cstrong\u003eSDA and SCL for I2C communication\u003c\/strong\u003e. Use with a particular microcontroller or development board depends on its I2C capability, correct wiring and appropriate software configuration.\u003c\/p\u003e\n\u003cp\u003eThis I2C LCD module can be used with Arduino boards that support I2C communication, provided the LCD, wiring and software configuration are compatible. It is not limited to Arduino and may also be used with other suitable microcontrollers.\u003c\/p\u003e\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1 × PCF8574 I2C LCD Module\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eBuy I2C LCD Module in Pakistan\u003c\/h3\u003e\n\u003cp\u003eBuy the \u003cstrong\u003eI2C LCD Module in Pakistan\u003c\/strong\u003e from Chip.pk for compatible 16x2 and 20x4 character LCD projects. The PCF8574-based interface provides SDA\/SCL I2C communication, onboard contrast adjustment and configurable address-selection pads for convenient LCD integration.\u003c\/p\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1. What is an I2C LCD module used for?\u003c\/strong\u003e\u003cbr\u003eAn I2C LCD module provides an I2C interface for a compatible character LCD, allowing communication through SDA and SCL instead of requiring multiple controller I\/O connections for the LCD interface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Is this I2C LCD module compatible with 16x2 LCDs?\u003c\/strong\u003e\u003cbr\u003eYes. The actual Chip.pk stock has been tested with a \u003cstrong\u003e16x2 character LCD\u003c\/strong\u003e and compatibility has been confirmed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Can I use this module with a 20x4 LCD?\u003c\/strong\u003e\u003cbr\u003eYes. The actual module has also been tested with a \u003cstrong\u003e20x4 character LCD\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4. Which IC is used on this I2C LCD module?\u003c\/strong\u003e\u003cbr\u003eThe product belongs to the \u003cstrong\u003ePCF8574-based\u003c\/strong\u003e I2C LCD interface family. The current verified Chip.pk stock is fitted with the \u003cstrong\u003ePCF8574T\u003c\/strong\u003e variant.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5. Can I use this I2C LCD module with Arduino?\u003c\/strong\u003e\u003cbr\u003eYes. It can be used with \u003cstrong\u003eArduino boards that support I2C communication\u003c\/strong\u003e, provided the LCD, wiring and software configuration are appropriate. The module itself is not limited to Arduino.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e6. Does this module reduce the number of pins needed to connect an LCD?\u003c\/strong\u003e\u003cbr\u003eYes. It allows the controller to communicate with the LCD interface through the \u003cstrong\u003eSDA and SCL I2C lines\u003c\/strong\u003e, reducing the number of controller I\/O connections normally required for a parallel LCD interface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7. What are SDA and SCL on the module?\u003c\/strong\u003e\u003cbr\u003eSDA is the I2C data line and SCL is the I2C clock line. These connections are used for communication between the module and an I2C-enabled controller.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e8. What are the A0, A1 and A2 pads used for?\u003c\/strong\u003e\u003cbr\u003eA0, A1 and A2 are hardware address-selection inputs associated with the PCF8574 device. Their configuration can be used to alter the module's I2C address where required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e9. Can the LCD contrast be adjusted?\u003c\/strong\u003e\u003cbr\u003eYes. The module includes an onboard \u003ccode\u003e103\u003c\/code\u003e trimmer potentiometer for adjusting the connected LCD's contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10. Is IIC the same as I2C for this module?\u003c\/strong\u003e\u003cbr\u003eIIC is another textual abbreviation commonly used for I2C. This listing primarily uses \u003cstrong\u003eI2C\u003c\/strong\u003e terminology.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e11. Is an LCD display included with the module?\u003c\/strong\u003e\u003cbr\u003eNo. The package contains the \u003cstrong\u003eI2C LCD interface module only\u003c\/strong\u003e. The LCD, development board and connecting wires are not included unless explicitly stated on the live product offer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e12. Where can I buy an I2C LCD module in Pakistan?\u003c\/strong\u003e\u003cbr\u003eYou can order this \u003cstrong\u003eI2C LCD module in Pakistan\u003c\/strong\u003e from Chip.pk, subject to current stock availability and pricing shown on the product page.\u003c\/p\u003e","brand":"Chip.pk","offers":[{"title":"Default Title","offer_id":52917910274333,"sku":null,"price":190.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/1060\/7389\/files\/chip_pk_i2c_module_3.webp?v=1789160985","url":"https:\/\/www.chip.pk\/products\/i2c-lcd-module-pcf8574","provider":"Chip.pk","version":"1.0","type":"link"}