Static information storage and retrieval – Read/write circuit – Serial read/write
Reexamination Certificate
2007-09-27
2009-06-02
Lam, David (Department: 2827)
Static information storage and retrieval
Read/write circuit
Serial read/write
C365S233500, C365S233100, C365S238500
Reexamination Certificate
active
07542365
ABSTRACT:
An apparatus and method are provided for accessing a serial memory without knowing the required number of address bits. The apparatus comprises a pull circuit, a data out control circuit and a transition detector. The pull circuit causes the input terminal to be set to a first predetermined logic state in response to a read command being provided to the serial memory. The data out control circuit has an output terminal for providing the read command and a first predetermined number of address bits to the output terminal. The transition detector is coupled to an input terminal for detecting if the input terminal transitions from the first predetermined logic state to a second predetermined logic state in response to the first predetermined number of address bits. The transition detector will detect a transition of the input terminal when a correct number of address bits have been provided.
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Freescale Semiconductor Inc.
Hill Daniel D.
Lam David
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