Title:
METHOD AND DEVICE FOR CONTROLLING MEMORY ACCESS
Document Type and Number:
Japanese Patent JPH0636579
Kind Code:
A
Abstract:
PURPOSE: To effectively utilize one piece of memory chip of a flash ROM, etc., and to improve its availability.
CONSTITUTION: The memory chip M1 is capable of forming a write unit in an optional size by dividing it to plural areas at every prescribed address range. When the cumulative value of the number of write times of the memory chip M1 for the area 5 arrives at a limit value, other area 6 in the empty area as the object of access by a CPU 1 is set and switched, and thereafter, information is written in the area 6.
More Like This:
Inventors:
IMAI MASATAKA
Application Number:
JP21342892A
Publication Date:
February 10, 1994
Filing Date:
July 17, 1992
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO
International Classes:
G06F12/16; G11C16/02; G11C16/06; G11C17/00; (IPC1-7): G11C16/06; G06F12/16
Attorney, Agent or Firm:
Suzuki Yoshimitsu
Next Patent: 半導体集積回路