| 摘要 |
A digital multilevel non-volatile memory integrated system includes an apparatus and method for high voltage, high precision pulsing generation. A voltage generator includes a low voltage high speed level generator, a low voltage to high voltage high speed level translator, and a high voltage driver. A precise and stable high voltage level is attained across power supply, process, or temperature variation. The power may be optimized at the high voltage supply as tradeoff with power in the low voltage supply. A ping-pong operation sets up a high voltage level and the high voltage pulsing is output in a ping-pong fashion. A slew rate control circuit slows the input step voltage to achieve faster settling times. The high voltage is shaped by low voltage switching, HV fast switching and ramp circuit control. The high voltage pulsing may be fast and precise to permit real time control of the pulse parameters to adapt to memory cell attributes.
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