Abstract:
본 발명에 따른 메모리 모듈은, 제 1 입출력 폭을 갖고, 데이터를 저장하는 제 1 메모리 칩들, 제 2 입출력 폭을 갖고, 상기 데이터의 에러를 정정하기 위한 에러 정정 코드를 저장하는 제 2 메모리 칩, 및 메모리 제어기로부터 클록, 명령어, 및 어드레스를 수신하고, 상기 제 1 메모리 칩들 및 상기 제 2 메모리 칩에 상기 클록, 상기 명령어, 및 상기 어드레스를 전송하는 드라이버 회로를 포함하고, 상기 제 1 메모리 칩들의 각각의 어드레스 뎁쓰와 상기 제 2 메모리 칩의 어드레스 뎁쓰는 서로 다른 것을 특징으로 한다.
Abstract:
PURPOSE: A method for accelerating a write timing calibration in a semiconductor memory device and a calibration accelerating circuit thereof are provided to minimize a boot-up timing by reduce write timing calibration time. CONSTITUTION: A write timing calibration accelerating circuit includes a phase difference detecting unit(210) and a detection data output unit(220). The phase difference detecting unit detects a phase difference between a first signal and a second signal applied for a write timing calibration. The detection data output unit outputs the detection data corresponding to the detected phase difference through a data output line. [Reference numerals] (100) Controller; (200) Memory device; (210) Phase difference detecting unit; (220) Detection data output unit; (230) Selecting unit; (235) DQ output unit; (240) Control unit; (250) Memory cell array
Abstract:
PURPOSE: A semiconductor module and a test system using the same are provided to efficiently identify a pin connection relation inside the semiconductor module. CONSTITUTION: A semiconductor module(1000) is composed of multiple module pins(MP1,MP2-MPm) and a semiconductor device(1010). The multiple module pins output M bits of an identification pattern signal respectively. The semiconductor device includes multiple device pins, and outputs the identification pattern signal, which is to identify connection relations among the multiple device pins based on a test control signal, through the multiple device pins.
Abstract:
According to the present invention, a memory module includes a plurality of semiconductor memory devices. Each of the semiconductor memory devices includes a memory cell array which includes a plurality of memory cells arranged in a region where a plurality of bit lines and a plurality of word lines cross each other; a mode register set (MRS) circuit which generates an enable signal corresponding to an error generation mode for each of the semiconductor memory devices in response to an MRS command applied from a command decoder; and an address buffer which compares an address signal inputted from the outside with a prestored, predetermined address signal, based on the enable signal. When the address signal inputted from the outside is identical with the predetermined address signal, data other than data inputted from the outside is written to a memory cell corresponding to the predetermined address signal.
Abstract:
The present invention relates to a memory module. The memory module of the present invention comprises: a printed circuit board; first semiconductor packages provided on one surface of the printed circuit board; and second semiconductor packages provided on the other surface of the printed circuit board. The number of ranks formed by the first semiconductor packages is different from a number of ranks formed by the second semiconductor packages.
Abstract:
PURPOSE: A memory module mounting a parallel test device is provided to reduce test time by simultaneously testing a plurality of ranks. CONSTITUTION: A parallel test device(130,132) is a memory module with a plurality of ranks. Each rank generates the first parity data about write data composed of a plurality of bits and the first data replacing one or more bits with the first parity data in a writing operation and generates the second parity data about the first data in a reading operation, and transmits the second parity data as read data in response to a parallel test mode control signal. A parallel test controller(120,122) controls the writing and reading operations in the parallel test mode by generating a parallel test mode control signal.