Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Particular stable state circuit
Patent
1997-12-12
1999-09-28
Lam, Tuan T.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Particular stable state circuit
327174, 327176, H03K 3033
Patent
active
059594853
ABSTRACT:
A controllable one-shot circuit for use in a control unit of a memory circuit, for asserting a control signal with variable (and controllable) duration in response to a trigger signal, and a state machine for controlling memory operations of a memory circuit which includes such a controllable one-shot circuit. In preferred embodiments, the one-shot and the state machine of which it is a part are implemented as parts of a single memory chip (preferably, a nonvolatile memory chip such as an integrated flash memory circuit). Other aspects of the invention are methods of operating a state machine of a memory circuit to generate control signals for use in controlling memory operations performed by the memory circuit. In preferred embodiments of such methods, the state machine is included in an integrated memory circuit and the one-shot circuit is controlled to assert a control signal with a desired duration in response to a trigger signal, thus enabling the state machine to control efficiently the duration of selected memory operations (or sub-operations of such operations) of the memory circuit.
REFERENCES:
patent: 4236253 (1980-11-01), Onishi et al.
patent: 4797585 (1989-01-01), Segawa et al.
patent: 5309034 (1994-05-01), Ishibashi
patent: 5365181 (1994-11-01), Mair
patent: 5453707 (1995-09-01), Hiratsuka et al.
Lam Tuan T.
Micro)n Technology, Inc.
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