ROM memory cell, memory array, memory and reading method
A storage unit and storage array technology, which is applied in the storage array, ROM storage unit, memory and reading fields, can solve the problems that the memory chip area cannot be further reduced and the storage density is low, and achieve easy implementation, improved storage density, and circuit simple effect
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[0055] In order to make the purpose, features and effects of the present invention more obvious and understandable, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0056] Many specific details are set forth in the following description to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways than described here, so the present invention is not limited by the specific embodiments disclosed below.
[0057] With reference to the ROM storage unit in the prior art, its constituent unit is a MOS transistor, and the channel control capability of this MOS transistor is single, therefore, as figure 2 or image 3 The memory cells shown, whether word line programming or bit line programming, can only store logic states by turning on and off MOS transistors, so the amount of information stored per unit is limited, and the chip...
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