| 摘要 |
<p>PURPOSE:To improve the processing capability of a processor and to reduce the circuit forming area by not only outputting a provate address to a storage part but also stopping address update of a program memory at the time of storing transmission data or reception data having preliminarily set data length in the storage part. CONSTITUTION:When transmission data or reception data whose data length is set to a data length setting register 311 is stored in a storage part 321. The private address outputted from a private address generating part 322 is outputted to the storage part 321, and address update of a program memory 313 is stopped by an address change stop means 312a, and transmission or reception data in the storage part 321 is transferred. Consequently, a buffer memory for storage of serial packet data and its control circuit are unnecessary, and data is directly transmitted and received. Thus, the circuit forming area is reduced and the processing capability is improved.</p> |
