Method and device for data transfer

摘要: PROBLEM TO BE SOLVED: To obtain a data transfer device which generates transmission end interruption to processor at the time of overall an external device. SOLUTION: Data is written in buffer 201 from processor, and outputted 300 after being received by register 221. At this time, signal 255 generated request part 203 based on flag 202 222 counter 212. The 100 receives turn off output interface turning-on 242 clock control 214, 214 stops operation 243.