| 摘要 |
PURPOSE:To reduce hardware in scale, by adding a function for reading and writing data by use of the input-output common terminal of a static RAM, and outputting data which is written and read, bit by bit, in series on bit-by-bit series output basis. CONSTITUTION:Data RD1-RD8 read out of a memory matrix 10 in parallel are held in registers 201-208 once a chip selecting signal is reset, and when a shift clock CK is supplied to the registers 201-208 while the selecting signal is held reset, the data RD are shifted by one bit every time the shift clock CK rises to obtain serial data from an input-output common information source 138. Consequently, data are read and written in series with less hardware. |
