Static information storage and retrieval – Read/write circuit – Including reference or bias voltage generator
Patent
1993-12-01
1996-04-23
Nelms, David C.
Static information storage and retrieval
Read/write circuit
Including reference or bias voltage generator
365226, 327538, 327543, G11C 700, H03L 100
Patent
active
055110266
ABSTRACT:
A gate power supply for supplying power to the gates of flash EEPROM memory cells in a multi-density or low voltage supply memory array to determine the states stored by the memory cells. The gate power supply includes a multi-phase voltage pump to increase voltage supplied to the gates of the memory cells above a system voltage supply, V.sub.CC to increase the working margin between memory cell states. The gate power supply further includes a low power supply standby pump to maintain the boosted voltage during an inactive mode. The wordline decoder for the memory is divided into sections with a large n-well parasitic capacitance of each decoder section acting as a reservoir to store the charge supplied by the low power standby pump. In an active mode, the parasitic capacitance in unselected decoder sections supplies power to the input of the selected diecoder section while the multi-phase pump is turning on. Zener regulation diodes are coupled to the inputs of each decoder section to regulate the voltage supplied to each section. A reference supply feeds back power from the input of the selected decoder section to the input of a reference array. The reference supply further provides circuitry to reduce mismatches between the memory array and the reference array.
REFERENCES:
patent: 4495602 (1985-01-01), Sheppard
patent: 4769787 (1988-09-01), Furusawa
patent: 4970409 (1990-11-01), Wada
patent: 5031149 (1991-07-01), Matsumoto
patent: 5119330 (1992-06-01), Tanagawa
patent: 5218569 (1993-06-01), Banks
patent: 5276646 (1994-01-01), Kim
patent: 5291446 (1994-03-01), Van Buskirk
patent: 5305260 (1994-04-01), Ninomiya
Hollmer, et al., U.S. patent application entitled, "Programmed Reference", Filed Dec. 1, 1993., Ser. No. 08/160,582.
U.. patent application entitled, "Drain Power Supply", Ser. No. 07/964,697, Filed Oct. 22, 1992.
Cleveland Lee E.
Hollmer Shane C.
Advanced Micro Devices , Inc.
Mai Son
Nelms David C.
LandOfFree
Boosted and regulated gate power supply with reference tracking does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Boosted and regulated gate power supply with reference tracking , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boosted and regulated gate power supply with reference tracking will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2314663