摘要:
A stacked memory chip includes a chip input-output pad unit, a first semiconductor die and a second semiconductor die. The chip input-output pad unit includes a chip command-address pad unit, a lower chip data pad unit and an upper chip data pad unit that are to be connected to an external device. The first semiconductor die electrically is connected to the chip command-address pad unit and the lower chip data pad unit and electrically disconnected from the upper chip data pad unit. The second semiconductor die electrically is connected to the chip command-address pad unit and the upper chip data pad unit and electrically disconnected from the lower chip data pad unit. The input-output load may be reduced by selectively connecting each of the stacked semiconductor dies to one of the lower chip data pad unit and the upper chip data pad unit.
摘要:
A memory controller includes a memory capacity setting circuit and an address selecting circuit. The memory capacity setting circuit is configured to set a valid memory capacity of a memory device based on a defective cell information signal, and generate a valid memory capacity signal based on the valid memory capacity. The address selecting circuit is configured to disable an address signal corresponding to a memory block having a defective cell, and generate a selection address signal based on the valid memory capacity signal and the disabled address signal. A non-defective cell in a memory cell array is activated based on the selection address signal and a command signal.
摘要:
Semiconductor memory devices are provided. The semiconductor memory device includes a command decoder, a code converter and a code outputting unit. The command decoder is configured to receive a plurality of command signals from an external source, decode the plurality of command signals and generate a mode register reading signal responsive to the decoded plurality of command signals. The code converter is configured to receive mode setting codes generated based on the decoded plurality of command signals and convert the mode setting codes to serial mode setting codes. The code outputting unit is configured to receive the serial mode setting codes and output the serial mode setting codes to the external source responsive to the mode register reading signal. Systems including the semiconductor memory devices are also provided.
摘要:
A memory module including at least one memory device mounted on a support member and at least one connect terminal mounted on the support member a distance from an edge of the support member and a memory system including the memory module are provided. The memory device may be a semiconductor device. The connect terminal may be located on at least one surface of the support member, which may be a printed circuit board. The connect terminal may be capable of connecting the memory module to a main board or to other memory modules. Further, the connect terminal may be electrically connected to the memory devices. A buffer may be mounted on the support member a distance from the edge of the support member. A main board including a base member and a second connect terminal may be connected to the memory module to form the memory system.
摘要:
A semiconductor integrated circuit and a memory device capable of selecting power-down exit speed and power-save modes and method thereof are provided. The memory device includes a command decoder for generating a power-down signal in response to a power-down command, a mode register (MRS) for storing power-down exit information, a clock synchronization circuit such as a DLL or PLL circuit for generating an internal clock signal synchronized with an external clock signal, and a controller for controlling the DLL or PLL circuit. At power-down exit of the memory device, the power-down exit information can be selected between a fast wakeup time and a slow wakeup time.
摘要:
A memory for storing data information and/or a controller for controlling read/write operations of the memory based on a source synchronous interface are provided. During the read/write operations, a command and an address are provided to the memory together with the first strobe signal. The memory may latch the command and address in response to the first strobe signal. During a read operation, the memory responds to a received second strobe signal to generate a third strobe signal. The memory outputs data from the memory and the third strobe signal, for example, so that the output data may be latched with the third strobe signal by the memory controller.
摘要:
A memory device having a high bus efficiency on a network, an operating method of the memory device, and a memory system including the memory device are provided. The memory device includes banks, a programming register, and a controller. Each of the banks has a plurality of memory cells arranged in a matrix of rows and columns. In a write operation, the programming register stores simultaneous write information on how many banks there are in which data are stored. In a read operation, the controller selects one of the banks subjected to the write operation in response to the simultaneous write information to read out the memory cell data in the selected bank.
摘要:
A flash memory device including: a memory cell array; a signal generator inputting a first data fetch signal and outputting a second data fetch signal; and an output buffer circuit configured to output data from the memory cell array in sync with rising and falling edges of the second data fetch signal, wherein second data fetch signal is output along with data output from the output buffer circuit.
摘要:
Semiconductor memory devices are provided. The semiconductor memory device includes a command decoder, a code converter and a code outputting unit. The command decoder is configured to receive a plurality of command signals from an external source, decode the plurality of command signals and generate a mode register reading signal responsive to the decoded plurality of command signals. The code converter is configured to receive mode setting codes generated based on the decoded plurality of command signals and convert the mode setting codes to serial mode setting codes. The code outputting unit is configured to receive the serial mode setting codes and output the serial mode setting codes to the external source responsive to the mode register reading signal. Systems including the semiconductor memory devices are also provided.
摘要:
A semiconductor device performs read or write when read or write command with auto-precharge function is input. The semiconductor device does not carry out the auto-precharge operation until a predetermined auto-precharge delay time passes. Therefore, page mode can be performed while using read or write command with auto-precharge function.