Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2006-06-06
2006-06-06
Cunningham, Terry D. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S198000
Reexamination Certificate
active
07057427
ABSTRACT:
A power on reset (POR) circuit for providing a reset pulse signal to a chip when power supply voltage, VDD, ramps up so that the chip always starts in a known state. The POR circuit generates the reset pulse as soon as VDD exceeds an assertion voltage. The assertion voltage is independent of the ramp rate of VDD. The POR circuit is shut off as soon as the reset signal is generated, thereby drawing zero steady state current from VDD. The re-arm time for the POR circuit is very small. The POR circuit does not reset the chip when there is a dynamic change in VDD.
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Yasuda, Takeo et al.; “A Power-On Reset Pulse Generator for Low Voltage Applications”; IEEE International Symposium on Circuits and Systems; May 6-9, 2001; pp. 559-601; vol. 4; IEEE.
Misri Kulbhushan
Muhury Deeya
Raman Murugesan
Wadhwa Sanjay
Bergere Charles
Cunningham Terry D.
Freescale Semiconductor, INC
Hiltunen Thomas J.
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