General Description
The F81216 mainly provides 3 pure UART ports and one UART+ IR port through LPC. 
Each UART includes 16-byte send/receive FIFO, a programmable baud rate generator, complete modem control capability and an interrupt system. 
One watch dog timer is provided for system controlling and the time interval can be programmed by register or hardware power on setting pin.   One clock 24/48MHz input is necessary, and default is 24MHz.   Powered by 3.3V voltage, the F81216 is in the small 48pin LQFP package (7mm x 7mm).

FEATURE List
 Supports LPC interface 
 Totally provides 4 UART (16550 asynchronous) ports
    ¾ 3 Pure UART
    ¾1 UART+IR
 1 watch dog timer with WDTOUT# signal
 1 frequency input 24/48MHz 
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 48-LQFP(7mm x 7mm)