Hi dagakshay.. Atmega32 have | Microcontroller › AVR › 5X7 dot matrix led interfacing › Hi dagakshay.. Atmega32 have April 15, 2011 at 12:45 pm #5987 AhmedParticipant Hi dagakshay.. Atmega32 have only 4 ports like ATMEL C51 if i want to interface 6 7*5 dot matrix leds how can i provide external ports ???? I think you can interface just 3 dot matrix leds is that right or not ???? can we use another way to do this with one chip? and how ???