摘要:
The present invention allows for an increase in programming parallelism in a non-volatile memory system without incurring additional data transfer latency. Data is transferred from a controller to a first memory chip and a programming operation is caused to begin. While that first memory chip is busy performing that program operation, data is transferred from the controller to a second memory chip and a programming operation is caused to begin in that chip. Data transfer can begin to the first memory chip again once it has completed its programming operation even though the second chip is still busy performing its program operation. In this manner high parallelism of programming operation is achieved without incurring the latency cost of performing the additional data transfers. Two sets of embodiments are presented, one that preserves the host data in a buffer until successful programming of that data is confirmed and one that does not require that success be achieved and that does not preserve the data thus achieving a higher rate of data programming throughput.
摘要:
In a memory array having redundant columns, a scheme allows defective cells to be individually remapped to redundant cells in a redundant column. Redundant cells in one redundant column replace defective cells in multiple non-redundant columns. Remapping is done as part of initial test and configuration. Specific hardware can be used for the scheme or firmware in the memory controller can implement the scheme.
摘要:
A non-volatile memory device is provided with a controller and includes method that controls memory operations and to emulate the memory and communication characteristics of a legacy memory device. In this way, the memory device is compatible with a host that was originally designed to operate the legacy memory device. In particular, the controller performs the emulation to the host taking into account differences such as multibit memory, error correction requirement, memory support of overwrites, and erasable block sizes.
摘要:
Two or more very small encapsulated electronic circuit cards to which data are read and written are removably inserted into two or more sockets of a host system that is wired to the sockets. According to one aspect of the disclosure, command and response signals are normally communicated between the host and the cards by a single circuit commonly connected between the host and all of the sockets but during initialization of the system a unique relative card address is confirmed to have been written into each card inserted into the sockets by connecting the command and status circuit to each socket one at a time in sequence. This is a fast and relatively simple way of setting card addresses upon initialization of such a system. According to a second aspect of the disclosure, the host adapts to transferring data between it and different cards of the system over at least two different number of the data lines commonly connected between the host and all of one or more sockets, each card permanently storing a host readable indication of the number of parallel data lines the card is capable of using. This allows increasing the rate of data transfer when the need justifies an increased card circuit complexity. According to a third aspect of the disclosure, a serial stream of data is sent over a number of data lines from one to many by alternately connecting bits of the stream to a particular number of individual lines.
摘要:
A memory card of one published standard, such as the Multi-Media Card (MMC) or Secure Digital Card (SD), is modified to include the function of a Subscriber Identity Module (SIM) according to another published standard. The controller of the memory card communicates between electrical contacts on the outside of the card and both the memory and the SIM. In one specific form, the memory card has the physical configuration of the current Plug-in SIM card with a few external contacts added to accommodate the memory controller and data memory. In another specific form, the memory card has the physical configuration of the current SD card, including external contacts.
摘要:
A flash memory card structure with an external contact structure according to a published standard, such as the USB standard, also includes a second data transmission path, such as a wireless one. A removable cap fits over the card to cover the external contacts when they are not being used as a memory data path. One of two or more different caps may be selected to be placed on the card in order to control operation of the second data transmission path, such as to select the distance of wireless transmission from one of two or more pre-set distances. Power to operate the memory card through the second path, when not connected to a host, may also be provided through the external contacts by including a battery in the caps.
摘要:
Two or more very small encapsulated electronic circuit cards to which data are read and written are removably inserted into two or more sockets of a host system that is wired to the sockets. According to one aspect of the disclosure, command and response signals are normally communicated between the host and the cards by a single circuit commonly connected between the host and all of the sockets but during initialization of the system a unique relative card address is confirmed to have been written into each card inserted into the sockets by connecting the command and status circuit to each socket one at a time in sequence. This is a fast and relatively simple way of setting card addresses upon initialization of such a system. According to a second aspect of the disclosure, the host adapts to transferring data between it and different cards of the system over at least two different number of the data lines commonly connected between the host and all of one or more sockets, each card permanently storing a host readable indication of the number of parallel data lines the card is capable of using. This allows increasing the rate of data transfer when the need justifies an increased card circuit complexity. According to a third aspect of the disclosure, a serial stream of data is sent over a number of data lines from one to many by alternately connecting bits of the stream to a particular number of individual lines.
摘要:
Two or more very small encapsulated electronic circuit cards to which data are read and written are removably inserted into two or more sockets of a host system that is wired to the sockets. According to one aspect of the disclosure, command and response signals are normally communicated between the host and the cards by a single circuit commonly connected between the host and all of the sockets but during initialization of the system a unique relative card address is confirmed to have been written into each card inserted into the sockets by connecting the command and status circuit to each socket one at a time in sequence. This is a fast and relatively simple way of setting card addresses upon initialization of such a system. According to a second aspect of the disclosure, the host adapts to transferring data between it and different cards of the system over at least two different number of the data lines commonly connected between the host and all of one or more sockets, each card permanently storing a host readable indication of the number of parallel data lines the card is capable of using. This allows increasing the rate of data transfer when the need justifies an increased card circuit complexity. According to a third aspect of the disclosure, a serial stream of data is sent over a number of data lines from one to many by alternately connecting bits of the stream to a particular number of individual lines.
摘要:
In a memory array having redundant columns, a scheme allows defective cells to be individually remapped to redundant cells in a redundant column. Redundant cells in one redundant column replace defective cells in multiple non-redundant columns. Remapping is done as part of initial test and configuration. Specific hardware can be used for the scheme or firmware in the memory controller can implement the scheme.