Network software library - Ultracompact TCP/IP protocol stack [advanced version] M3S-T3-Tiny (hereafter abbreviated "T3") is the communication protocol software library for Renesas microcontrollers. It makes TCP/IP communication possible in an Ethernet-connected network for all types of equipment that incorporates Renesas microcontrollers. It has been developed based on the standard version of TCP/IP protocol stack, or M3S-T2-Tiny (hereafter abbreviated "T2"), by altering its specifications to suit to each MCU core and adding new functions that were not available with T2*. Furthermore, since T3 can process TCP/IP at high speed, it helps to reduce functional implementations to a possible minimum, thereby enabling the user to realize a compact program size.