Abstract:
An operating method for a memory system including a nonvolatile random access memory (NVRAM) and a NAND flash memory includes performing a normal read operation directed to the target memory cell in response to a read request, determining that a read fail has occurred as a result of the normal read operation, then performing a read retry operation by iterations directed to the target memory cell according to a first read retry scheme until a pass read retry iteration successfully reads the target memory cell, and storing pass information associated with the pass read retry iteration in the NVRAM.
Abstract:
A heating jacket wrapping a pipe of semiconductor manufacturing equipment includes an internal shell wrapping an outer circumference of the pipe and having an insulation function, a heating line arranged on the outside of an internal shell, a vacuum insulation panel (VIP) wrapping the outside of the heating line, and an external shell wrapping an external surface of the VIP and having an insulation function. A plurality of heating jackets are connected to one another in a longitudinal direction of the pipe. Temperature sensors are arranged in some of the plurality of heating jackets. Temperature sensors are not arranged in the others of the plurality of heating jackets.
Abstract:
A nonvolatile memory device includes a memory cell array, a page buffer unit which output a verify-read result, a reference current generating unit which generates a reference current signal, a page buffer decoding unit which outputs currents according to the verify-read result. The nonvolatile memory device further includes an analog bit counting unit which counts the currents, a digital adding unit which calculates an accumulated sum of the counting result, a pass/fail checking unit which outputs a pass signal or fail signal according to the calculation result, and a control unit controlling a program operation.