| 摘要 |
<p>PURPOSE:To provide the flexible input switching circuit of the microcomputer which can easily be constituted so that signals complying with user's requests are applied to a common input terminal, as to a microcomputer which inputs plural input signals selectively through a common input terminal. CONSTITUTION:The mask switching of switch circuits 150-153 is performed at a user's request and then interruption signals EINT0-EINT3 can be assigned to both terminals 102-105 to which signals PA0-PA3 and AD0-AD3 are impressed and also terminals 126-129 to which signals PB0-PB3 and SI, SO, SCK, and HCNT are impressed.</p> |
