Internal power control circuit for a semiconductor device

Details Internal power control circuit for a semiconductor device Internal power control circuit for a semiconductor device

1996-12-05

1999-04-06

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327 99, 327199, 327208, H03K 3037

Patent

active

058923861

ABSTRACT:
An internal power control circuit for a semiconductor device allows easy testing of the internal circuit blocks or memory arrays at various voltage levels. In the semiconductor device, internal voltage switching circuits connected between the internal power supply line and each array power supply line are switched ON or OFF according to signals applied to control pads coupled to each internal voltage switching circuit. During normal operation, a power voltage generated by the internal voltage generator is applied through an internal power supply line to each array power supply line coupled to the internal circuit blocks. During a test operation, different power voltages may be applied to the control pads to selectively decouple individual array power supply lines from the internal power supply line, and selectively couple the power voltages applied to the control pads to the corresponding array power supply lines and internal circuit blocks.

REFERENCES:
patent: 3502905 (1970-03-01), Bicking
patent: 4617473 (1986-10-01), Bingham

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