Memory access interface for a micro-controller system with...

Details Memory access interface for a micro-controller system with... Memory access interface for a micro-controller system with...

2007-07-31

2007-07-31

Tran, Michael (Department: 2827)

Static information storage and retrieval

Addressing

Particular decoder or driver circuit

C365S230050

Reexamination Certificate

active

11553332

ABSTRACT:
A memory access interface for connecting a memory to a micro-controller having an address/data multiplexing bus and a microprocessor is proposed. The memory access interface includes an address latch, a multiplexer, and a data buffer. The address latch latches and outputs the lower-bit address signal on the address/data multiplexing bus of the micro-controller when an address-latch-enable signal is enabled. The multiplexer receives the lower-bit address signal latched by the address latch, a higher-bit address signal outputted from the micro-controller, and an address signal outputted from the microprocessor and selectively outputs the address signal of the micro-controller or the address signal of the microprocessor as the address signal of the memory according to a first control signal. The data buffer transmits the signal of the data bus of the memory to the address/data multiplexing bus of the micro-controller during a data cycle of the micro-controller, and maintains a high impedance state during an address cycle of the micro-controller.

REFERENCES:
patent: 5517624 (1996-05-01), Landry et al.
patent: 5793693 (1998-08-01), Collins et al.
patent: 5805610 (1998-09-01), Illes et al.
patent: 5931930 (1999-08-01), Krick et al.
patent: 6192451 (2001-02-01), Arimilli et al.
patent: 6438016 (2002-08-01), Keeth et al.
patent: 6526525 (2003-02-01), Chang
patent: 2001/0034802 (2001-10-01), Peng et al.
patent: 2005/0242834 (2005-11-01), Vadi et al.
patent: 2006/0050587 (2006-03-01), Takatsuka et al.
patent: 2006/0133158 (2006-06-01), Shin
patent: 2007/0025488 (2007-02-01), Ho et al.

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