Setting method of chip initial state
AssigneeKabushiki Kaisha Toshiba
InventorsTakeshi Nagai, Ryo Haga
Life of this patent
Estimating the term…
Abstract
Fuse data is supplied to each of a plurality of function blocks through a transfer path using shift registers. When the reliability of fuse elements is low, there is a possibility that a part of the fuse data may have an error. Further, when the transfer path of the fuse data is long, there is a possibility that a value of the fuse data may be inverted due to an influence of noises. Thus, a decoder is arranged in the transfer path of the fuse data, and encoded data is stored in the fuse elements. By performing error detection/correction in the decoder, the high reliability is assured with respect to chip operations and the like.
Claims2
A setting method of a chip initial state comprising:
- programming data in a non-volatile memory element;
- encoding the data read from the non-volatile memory element and latching it in a latch circuit;
- decoding the data latched in the latch circuit;
- correcting an error in the data upon detecting the error in the data when decoding the data, and again latching the error-corrected data in the latch circuit;
- and
- performing basic setting concerning operations of internal circuits based on the error-corrected data.
Dependencies are inferred from the claim text.