| 摘要 |
A voltage generating circuit for generating internal voltage for a packaged integrated circuit memory device, is controllable to provide incremental adjustments in the voltage for testing of the memory device. The voltage generating circuit permits internally generated voltages of the memory device, such as the substrate voltage Vbb, the DVC2 voltage, and the pumped voltage Vccp, to be controlled externally through the application of test signals via the conventional test function, in performing standard device tests such as the static refresh test, logic 1s and 0s margin testing, and the like for packaged memory devices. Also, programmable circuits including programmable logic devices, such as anti-fuses, are provided that are programmable to maintain the voltage at a magnitude to which it is adjusted.
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