Override timing control circuitry and method for terminating pro

Details Override timing control circuitry and method for terminating pro Override timing control circuitry and method for terminating pro

1993-09-10

1995-05-09

Gossage, Glenn

Static information storage and retrieval

Magnetic bubbles

Guide structure

365218, 365900, 395550, 364DIG1, G06F 1300, G06F 104, G11C 1606

Patent

active

054148294

ABSTRACT:
Override control circuitry and a method for terminating a sequence for erasing or programming a computer memory are described. A command register is provided for storing a command sent by an external processor to the memory. A decoder circuit decodes the command and outputs an erase or program set-up signal if the command indicates the initiation of an erase or program sequence. A latch is coupled to the decode circuit for storing the erase or program set-up signal. An override timer is located between the latch and the memory. The override timer includes a counter which is initialized and begins counting when the erase or program set-up signal is latched. The override timer also includes a circuit that detects when the counter has reached a first count for an erase sequence and a second count for a program sequence. The circuit then generates an erase or program override signal. An erase switch detects the erase override signal and prevents the application of an erase voltage to the memory. A program switch detects the program override signal and prevents the application of a program voltage to the memory. A voltage detector is also provided to terminate the erase or program sequences when the erase voltage or program voltage falls below a selected voltage level.

REFERENCES:
patent: 4439843 (1984-03-01), Takamatsu
patent: 4460982 (1984-07-01), Gee et al.
patent: 4718037 (1988-01-01), Thaden
patent: 4789967 (1988-12-01), Liou et al.
patent: 4791326 (1988-12-01), Vajdic et al.
patent: 4802119 (1989-01-01), Heene et al.
patent: 4958317 (1990-09-01), Terada et al.
patent: 4970692 (1990-11-01), Ali et al.
patent: 5034922 (1991-07-01), Burgess
patent: 5043940 (1991-08-01), Harari
patent: 5050125 (1991-09-01), Momodomi et al.
patent: 5053990 (1991-10-01), Kreifels et al.
patent: 5095344 (1992-03-01), Harari
patent: 5097444 (1992-03-01), Fong
patent: 5155705 (1992-10-01), Goto et al.
patent: 5172338 (1992-12-01), Mehrotra et al.
patent: 5222046 (1993-05-01), Kreifels et al.
patent: 5297148 (1994-03-01), Harari et al.
"Logic Design and Computer Organization", by Morton H. Lewin, p. 128, Addison-Wesley, 1983.
1989 Memory Components Handbook of Intel Corporation, Santa Clara, Calif., (1988).

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