{"product_id":"max7219-led-dot-matrix-display-ic","title":"MAX7219 Dot Matrix Display Driver IC","description":"\u003cp\u003eThe \u003cstrong\u003eMAX7219\u003c\/strong\u003e is a constant current LED display driver IC that can be used to drive ,  or individual . It communicates with a microcontroller through a simple serial interface. The chip also has a built-in BCD decoder and 8x8 static RAM.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications of MAX7219 IC\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e10MHz Serial Interface\u003c\/li\u003e\n\u003cli\u003eIndividual LED Segment Control\u003c\/li\u003e\n\u003cli\u003eDecode\/No-Decode Digit Selection\u003c\/li\u003e\n\u003cli\u003e150µA Low-Power Shutdown (Data Retained)\u003c\/li\u003e\n\u003cli\u003eDigital and Analog Brightness Control\u003c\/li\u003e\n\u003cli\u003eDisplay Blanked on Power-Up\u003c\/li\u003e\n\u003cli\u003eDrive Common-Cathode LED Display\u003c\/li\u003e\n\u003cli\u003e24-Pin DIP and SO Packages\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMAX7219 Pinout Diagram\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0300\/6424\/6919\/files\/MAX7219-Pinout_480x480.png?v=1586406144\" alt=\"MAX7219 Pinout\" style=\"float: none;\" width=\"480x480\" height=\"480x480\"\u003e\u003c\/div\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMAX7219 IC Pinout Description\u003c\/strong\u003e\u003c\/p\u003e\u003ctable style=\"width: 551px;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 132px;\"\u003e\u003cp\u003e\u003cstrong\u003ePINS\u003c\/strong\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 152px;\"\u003e\u003cp\u003e\u003cstrong\u003eNAME\u003c\/strong\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 271px;\"\u003e\u003cp\u003e\u003cstrong\u003eDESCRIPTION\u003c\/strong\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 132px;\"\u003e\u003cp\u003e1\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 152px;\"\u003e\u003cp\u003eDIN\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 271px;\"\u003e\u003cp\u003eSerial data input\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 132px;\"\u003e\n\u003cp\u003e2, 3,\u003c\/p\u003e\n\u003cp\u003e5 â€?8,\u003c\/p\u003e\n\u003cp\u003e10, 11\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 152px;\"\u003e\u003cp\u003eDIG0 â€?DIG7\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 271px;\"\u003e\u003cp\u003eCurrent sink for each common cathode pulled high in shutdown\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 132px;\"\u003e\u003cp\u003e4, 9\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 152px;\"\u003e\u003cp\u003eGND\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 271px;\"\u003e\u003cp\u003eChip ground, connect both pins\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 132px;\"\u003e\u003cp\u003e12\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 152px;\"\u003e\u003cp\u003eLOAD\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 271px;\"\u003e\u003cp\u003e16-bit data is latched to the internal memory\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 132px;\"\u003e\u003cp\u003e13\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 152px;\"\u003e\u003cp\u003eCLK\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 271px;\"\u003e\u003cp\u003eSerial clock input, 10MHz max. Data is shifted in on the rising edge and shifted to DOUT on falling edge\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 132px;\"\u003e\n\u003cp\u003e14 â€?17,\u003c\/p\u003e\n\u003cp\u003e20 â€?23\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 152px;\"\u003e\n\u003cp\u003eSEG A â€?SEG G,\u003c\/p\u003e\n\u003cp\u003eDP\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 271px;\"\u003e\u003cp\u003eCurrent source for seven segments and decimal point\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 132px;\"\u003e\u003cp\u003e18\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 152px;\"\u003e\u003cp\u003eISET\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 271px;\"\u003e\u003cp\u003eSource current set pin\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 132px;\"\u003e\u003cp\u003e19\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 152px;\"\u003e\u003cp\u003eV+\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 271px;\"\u003e\u003cp\u003eVCC, 5.5V max.\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 132px;\"\u003e\u003cp\u003e24\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 152px;\"\u003e\u003cp\u003eDOUT\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 271px;\"\u003e\u003cp\u003eSerial data output for daisy-chaining\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMAX7219 Dot Matrix Display IC\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe source current limit for the LEDs is set by connecting a resistor between VCC and the ISET pin. The source current is typically 100 times the current into the ISET pin. The minimum allowed resistor value is 9.5K, which sets the segment current to 40mA. The intensity of the LEDs can also be controlled digitally by writing to the intensity register. The full brightness is set by the resistor between VCC and ISET, and the minimum is 1\/32 of the peak current. The intensity is controlled by 16 intervals.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe MAX7129 has a 16-bit input register. The first 8 bits, D0 â€?D7 are the data bits. D8 â€?D11are the four address bits. D12 â€?D15 are not used. D15 is the first bit received, i.e. the input is MSB first.\u003c\/p\u003e\u003cp\u003eThe display test mode turns on all the LEDs in the display to maximum intensity. To enable display mode, write D0 1 to address 0xF. To disable test mode, write D0 0. The digit registers are responsible for each of the 8 digits connected to the display. Each digit D0 â€?D8 has the address 0x1 to 0x8.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eShutdown turns the internal current sources off and puts the chip in a low power state which consumes only 150uA. The chip can be shut down by writing D0 0 at address 0xC.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMAX7219 Package Outline\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe IC is available in the standard 24-Pin DIP Package which is breadboard friendly. The dimensions of the same are shown below. \u003c\/p\u003e\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0300\/6424\/6919\/files\/MAX7219-Dimensions_480x480.png?v=1586406255\" alt=\"MAX7219 Dimensions\" style=\"float: none;\"\u003e\u003c\/div\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFurther Reference\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cul\u003e\u003c\/ul\u003e","brand":"mysite","offers":[{"title":"Default Title","offer_id":46018878865579,"sku":"CMP-QC0377","price":1.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/1205\/1115\/files\/MAX7219-IC_ff00a8fe-f1ad-4fd2-9c55-237be4130cc2.jpg?v=1767603348","url":"https:\/\/www.yuzxcn.com\/products\/max7219-led-dot-matrix-display-ic","provider":"Yuzx","version":"1.0","type":"link"}