Memory using undecoded precharge for high speed data sensing

Details Memory using undecoded precharge for high speed data sensing Memory using undecoded precharge for high speed data sensing

1997-04-21

1998-05-19

Nelms, David C.

Static information storage and retrieval

Read/write circuit

Including signal comparison

36518909, 36518911, 365190, 365203, G11C 1604

Patent

active

057544824

ABSTRACT:
A memory (400) returns all bit lines to a predetermined voltage level optimum for subsequent fast sensing. The memory (400) includes precharge circuitry (106, 108, 110) which begins the precharge operation during the latching phase of a prior access. The precharge circuitry (106, 108, 110) precharges all bit lines, rather than a selected bit line, to the predetermined voltage level prior to address decoding. In order to prevent "walk-up", the memory (400) includes circuitry such as a switched capacitor (138, 140) which draws current from the bit lines to reduce the voltage on a bit line which drove a logic high level in an earlier cycle or which had an increased voltage due to capacitive cross-coupling to an adjacent bit line. The memory (400) may also include devices such as transmission gates (142, 144, 146) to couple together adjacent bit lines and thereby more evenly distribute the precharging.

REFERENCES:
patent: 4661931 (1987-04-01), Flannagan et al.
patent: 4713797 (1987-12-01), Morton et al.
patent: 4965473 (1990-10-01), Peguet et al.
patent: 5040148 (1991-08-01), Nakai et al.
patent: 5138579 (1992-08-01), Tatsumi et al.
patent: 5153853 (1992-10-01), Eby et al.
patent: 5381374 (1995-01-01), Shiraishi et al.
patent: 5459694 (1995-10-01), Arakawa
patent: 5559737 (1996-09-01), Tanaka et al.
Hiromi Nobukata et al., "A 65 ns 3 V-only NAND-Flash Memory with New Verify Scheme and Folded Bit-Line Architecture", IEICE Trans. Electron, vol. E78-C, No. 7, Jul. 1995, pp. 818-824.

Affiliated with

Also associated with

Rating

Memory using undecoded precharge for high speed data sensing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Memory using undecoded precharge for high speed data sensing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Memory using undecoded precharge for high speed data sensing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1859948