SAM data accessing circuit having low operating current

Details SAM data accessing circuit having low operating current SAM data accessing circuit having low operating current

1990-12-05

1992-06-02

Fears, Terrell W.

Static information storage and retrieval

Read/write circuit

Having particular data buffer or latch

36523008, G11C 1300

Patent

active

051193337

ABSTRACT:
A SAM data accessing circuit and a method thereof in which, at the falling edge of a serial counting clock signal SC occurring at one and half cycles before data output cycles, the data is sensed from a SAM port memory. The sensed data is then stored in a first section of a two-stage buffer. At the falling edge of the serial counting clock signal SC occurring at half-cycles before data output cycles, the data stored in the first stage of the buffer is transferred to a second stage thereof. At the rising edge of the serial counting clock signal SC, the data stored in the second section of the buffer is outputted. This sensing/outputting sequence reduces peak currents consumed by the I/O circuits.

REFERENCES:
patent: 4977542 (1990-12-01), Matsuda et al.

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