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US 4,907,202 AGranted
Control circuit for EEPROM
AssigneeOki Electric Industry Co., Ltd.
InventorTanagawa Kouzi
Life of this patent
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Abstract
A control circuit generating a write/erase high voltage pulse for an EEPROM is disclosed. The control circuit comprises a low frequency clock pulse oscillation circuit, a voltage booster circuit having at least 19 FET booster stages and a high voltage shaping switch circuit having an exponential rising pulse edge driven by the clock pulse.
Claims3
A control circuit generating a write/erase high voltage pulse for an EEPROM comprising:
- (a) low frequency clock pulse oscillation circuit;
- (b) a voltage booster circuit having at least 19 FET booster stages;
- and
- (c) a high voltage shaping switch circuit having an exponential rising pulse edge driven by the clock pulse.
1 more element
Dependencies are inferred from the claim text.