Semiconductor memory module has regulator circuit to output voltage lower than source voltage of semiconductor memory, to output circuit

摘要

The module has a semiconductor memory (11) and a regulator circuit (14) supplied with an external voltage (VDD) through a power terminal (8). The memory (11) outputs a read start (RD) signal to the output circuit (12), and the transistor in the regulator circuit pulls down the source voltage to supply output voltage (VSSQ) that is less than the external voltage, to the output circuit, in response to the read start signal.