| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit which can control the states of input/output ports in real time. <P>SOLUTION: A microcomputer 100 has: the input/output ports (port A and port B), peripheral function blocks 101 and 102 which are correlated to the input/output ports and implement specified functions; a clock signal generating circuit 103; a function selecting decoder circuit 105 which decodes a mode signal inputted from a function selection pin 104 and outputs a function select signal; clock signal control means 106 and 107 which control the supply and stop of a clock signal clock to the peripheral function blocks 101 and 102 in response to the function select signal; and port control blocks 108 and 109 which set the functions of the ports A and B in response to the function select signal. <P>COPYRIGHT: (C)2004,JPO</p> |
