| 摘要 |
<p>PURPOSE:To quicken a readout operation by reducing the recovery time of a gate circuit bringing a built-in register in the initializing state. CONSTITUTION:When a control signal is in a 2nd logic level, a register is set to the initialize state by a gate circuit and when the control signal changes from the 2nd to a 1st logic level, the register is released from the initialize state and the gate circuit starts the recovery operation. Thus, a level change transmission means is provided to the gate circuit, the recovery time is reduced to quicken the readout operation. Thus, a PROM device is provided with major sections such as a memory cell section 10 storing an initial data to clear or set the register to the preset state, a PROM array 11 able to rewrite data by a program, an address buffer 12, an address decoder/driver 13, a multiplexer 14 and a gate circuit 15.</p> |
