Semiconductor memory device and refresh control method

Details Semiconductor memory device and refresh control method Semiconductor memory device and refresh control method

2011-06-14

2011-06-14

Nguyen, Dang T (Department: 2824)

Static information storage and retrieval

Read/write circuit

Data refresh

C365S230030, C365S236000

Reexamination Certificate

active

07961543

ABSTRACT:
A semiconductor memory device executes a refresh operation on memory banks, and includes: a command decoder that decodes a command from outside the semiconductor memory device, and outputs a refresh instruction when the command is an auto-refresh command; a refresh command generating unit that outputs a refresh command signal by a predetermined number of times corresponding to the number of word lines to be refreshed in response to the refresh instruction; a bank address counter that holds a bank address for selecting a memory bank to be refreshed, counts up the bank address every time the refresh command signal is output, and performs a carry-over action when count-up operations equivalent to the number of the memory banks are performed; and a row address counter that holds a row address for selecting a word line to be refreshed, and counts up the row address in response to the carry-over action.

REFERENCES:
patent: 5901101 (1999-05-01), Suzuki et al.
patent: 5999481 (1999-12-01), Cowles et al.
patent: 7260011 (2007-08-01), Riho et al.
patent: 2005/0243627 (2005-11-01), Lee et al.
patent: 2006/0018174 (2006-01-01), Park et al.
patent: 2007/0036006 (2007-02-01), Janzen et al.
patent: 08-077769 (1996-03-01), None
patent: 2001-035152 (2001-02-01), None
patent: 2003-187578 (2003-07-01), None
patent: 2006-099877 (2006-04-01), None

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