Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Patent
1998-04-02
1999-12-28
Nguyen, Viet Q.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
327141, 327148, 327535, 327536, 327538, G11C 1300
Patent
active
060086777
ABSTRACT:
A method an apparatus for performing a reset operation in an integrated circuit where a memory programming voltage is recovered allowing use of the memory during reset. The voltage recovery unit includes a high voltage conversion portion active for a first recovery period, and a low voltage conversion portion active for a subsequent second recovery period, the low voltage conversion portion is inactive for the first recovery period. The first and second recovery portions are responsive to assertion of a reset signal and an intermediate reset signal generated before the end of the reset period. Recovery of the programming voltage allows uncorrupted retrieval and use of a configuration word during reset. The high voltage conversion portion includes p-channel devices with robust breakdown resistance, and the low voltage conversion portion includes n-channel devices which provides improved speed of operation.
REFERENCES:
patent: 5418677 (1995-05-01), Engel
patent: 5444664 (1995-08-01), Kiroda et al.
patent: 5473271 (1995-12-01), Little et al.
Motorola Inc., 1995, "Power is Control", Motorola Power PC.TM.Microcontrollers, MPC500 Family System Integration Unit Reference Manual, pp. 8-2 to 8-8.
Harrington Cheri Lynn
Jew Thomas
Toms Thomas R.
Wang Yongliang
Weaver Kishna
Motorola Inc.
Nguyen Viet Q.
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