Read circuit and read method

Details Read circuit and read method Read circuit and read method

2011-08-30

2011-08-30

Phung, Anh (Department: 2824)

Static information storage and retrieval

Read/write circuit

Simultaneous operations

C365S201000

Reexamination Certificate

active

08009484

ABSTRACT:
In a read circuit, a write circuit writes a data to be stored and/or a test data to the memory cell. A control circuit controls the write circuit to write the test data to the memory cell in a first phase, and to write the test data which is same as the first phase to the memory cell in a second phase. An integrator integrates voltages at one terminal of the memory cell during the first phase to obtain a first integrated voltage, and integrates voltages at one terminal of the memory cell during the second phase to obtain a second integrated voltage. A buffer stores the first integrated voltage. A comparator compares the first integrated voltage from the buffer with the second integrated voltage from the integrator to obtain the data.

REFERENCES:
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patent: 7532498 (2009-05-01), Chow et al.
patent: 2009/0219753 (2009-09-01), Nozawa et al.
patent: 2009/0219757 (2009-09-01), Furuta et al.
patent: 2009/0237988 (2009-09-01), Kurose et al.

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