| 摘要 |
PURPOSE:To simplify the circuit constitution, by using a differential tri-digit write circuit. CONSTITUTION:A write circuit WA impresses write data signals DIN having opposite phase to bases of transistors (TRs)Q6, Q7. A write/readout control signal WE is impressed to a base of a TRQ8, and based on a collector output voltage of the TRs Q6, Q7, reference voltages V1, V2 of tri-digit according to the write/readout are formed, which is applied to the base of current switching TRs Q4, Q5 having the emitters of which are connected to a couple of data lines D0 of a memory array. |
