There is a cost-effective package 80-LQFP available.Transmissions are made using 4, QUART channels.As for packaging, Tray is chosen.At present, this electronic part has a status of Obsolete.You can mount it by using Surface Mount.There is 1.62V~3.63V supply voltage for it.Several characteristics of Internal Oscillator, Timer/Counter are present in it.
XR16M554IV80-F Features
XR16M554IV80-F Applications
There are a lot of MaxLinear, Inc. XR16M554IV80-F UARTs applications.