Abstract:
A non-volatile memory device (100) is proposed. The non-volatile memory device includes a chip (105) of semiconductor material. The chip includes a memory (202) and control means (204,210,214) for performing a programming operation (314), an erasing operation (312) and a reading operation (316) on the memory in response to corresponding external commands. The chip further includes testing means (118, 120, 220, 225, 230) for performing at least one test process including the repetition of at least one of said operations by the control means, and a single access element (118) for enabling the testing means.
Abstract:
The invention relates to an ESD protection network for a CMOS circuit structure integrated in a semiconductor substrate (2) and comprising discrete circuit blocks formed in respective substrate portions which are electrically isolated from one another and independently powered from at least one primary voltage supply (Vcc) having a respective primary ground (GND), and from at least one secondary voltage supply (Vcc_IO) having a respective secondary ground (GND_IO). This network comprises essentially:
a first ESD protection element (15) for an input stage of the circuit structure; a second ESD protection element (5) for an output stage of the circuit structure, the first (15) and second (5) protection elements having an input/output terminal (20) of the integrated circuit structure in common; at least one ESD protection element (B0) between the primary supply (Vcc) and the primary ground (GND); at least one ESD protection element (B) between the secondary supply (Vcc_IO) and the secondary ground (GND_IO).
Abstract:
The invention relates to a method and a circuit for generating a pulse synchronization signal (ATD) for timing the memory cell read phase in semiconductor integrated electronic memory devices. The pulse signal (ATD) is generated upon detection of a change in logic state of at least one of a plurality of address input terminals of the memory cells. The method consists of duplicating the ATD signal into at least one pair of signals (ATD1,ATD2) and propagating such signals through separate parallel timing chains (6,9) at the ends of which the ATD signal is reinstated, the chains (6,9) being alternately active.