| 摘要 |
PROBLEM TO BE SOLVED: To obtain a printer clock controller in which the driving operation of CPU and the refresh operation of RAM are performed surely with high power saving effect through very simple circuitry. SOLUTION: A RAM access switching circuit 110 is controlled to deliver first and second refresh timing signals to a DRAM 60 based on the detection of first and second comparison circuits 102, 103 when first and second oscillation circuits 100, 101 are stopped and a printer body is turned on. A clock switching circuit 107 is also controlled to input a first clock to a CPU-P51 and a control function module 200 controls the reset output of CPU such that the provision of a reset signal is released based on the detection of the second comparison circuit 103. |
