| 摘要 |
PURPOSE:To omit both serial/parallel (S/P) and P/S converting circuits for reduction of the logic circuit scale by using a selector which selects the correspondence between the data signal received from a memory array and the data signal of a memory device by the parallel input/output and the serial input/output in accordance with the mode switch signal and the selection signal. CONSTITUTION:A selector 12 which selects the correspondence between the data signal of a memory array 11 and the data signal of a memory device in accordance with the mode switch signal P/the inverse of S (between parallel/ serial input/output modes) and selection signals S0 and S1 is added into a mem ory 1 to attain the actions same as those of the S/P and P/S converting circuits. Thus it is possible to obtain a memory device that requires no S/P nor P/S converting circuit and is capable of the parallel input/output and the serial input/output respectively. |
