SEMICONDUCTOR MEMORY APPARATUS, AND REFERENCE VOLTAGE CONTROL CIRCUIT AND INTERNAL VOLTAGE GENERATION CIRCUIT THEREFOR

摘要

An internal voltage control circuit according to an embodiment may include a source power supply selection unit configured to receive a first internal power supply voltage and a second internal power supply voltage and selecting the first internal power supply voltage and the second internal power supply voltage as a source voltage in response to a test mode enable signal, a first reference voltage generation unit configured to receive the source voltage from the source power supply selection unit, and configured to generate a to first low reference voltage and a first high reference voltage. The reference voltage control circuit may also include a second reference voltage generation unit configured to receive the first internal power supply voltage and configured to generate a second low reference voltage and a second high reference voltage.

主权项

1. A reference voltage control circuit comprising:
a source power supply selection unit configured to receive a first internal power supply voltage and a second internal power supply voltage, and select the first internal power supply voltage or the second internal power supply voltage as a source voltage in response to a test mode enable signal; a first reference voltage generation unit configured to receive the source voltage from the source power supply selection unit, and configured to generate a first low reference voltage and a first high reference voltage; and a second reference voltage generation unit configured to receive the first internal power supply voltage, and configured to generate a second low reference voltage and a second high reference voltage.