| 摘要 |
<p>PURPOSE:To realize the reduction of power consumption and the increase of data processing speed by inhibiting execution of a sleep mode function when required. CONSTITUTION:A clock switching circuit receives the normal mode clock from a clock switching circuit 11 and the low-frequency sleep mode clock from a clock generator 23, and selects them in accordance with the control signal from a sleep mode discriminating circuit 14. The operation to discriminate a sleep mode set condition by a sleep mode discriminating circuit 14 is permitted or inhibited in accordance with contents of an enable/disable register 31. The operation of the sleep mode discriminating circuit 14 is inhibited or permitted in accordance with data processing contents of a CPU 13 to realize the reduction of power consumption and the increase of the data processing speed.</p> |
