Electronic digital logic circuitry – Interface – Current driving
Patent
1996-06-28
1998-04-21
Hudspeth, David R.
Electronic digital logic circuitry
Interface
Current driving
326 93, 365203, H03K 1716
Patent
active
057421854
ABSTRACT:
A data bus drive circuit for a semiconductor memory device, comprising true and complementary data buses for transferring true and complementary data from outside of the semiconductor memory device or from memory cells in the semiconductor memory device, respectively, a first control line for inputting an external read/write control signal, a second control line for inputting an external precharge command signal, a read precharge circuit for switching a voltage from a first voltage source to the true and complementary data buses in response to the read/write control signal from the first control line, a write precharge circuit for switching a voltage from a second voltage source to the true and complementary data buses in response to the read/write control signal from the first control line, and a control circuit for selectively applying the read/write control signal from the first control line to the read and write precharge circuits in response to the precharge command signal from the second control line. According to the present invention, the data bus can be precharged with half a supply voltage after a write operation is performed. Therefore, the data bus drive circuit can enhance the operation speed of the semiconductor memory device and reduce power consumption thereof.
REFERENCES:
patent: 4810910 (1989-03-01), Schoelikopf et al.
patent: 4941128 (1990-07-01), Wada et al.
patent: 5257226 (1993-10-01), McClure
patent: 5267197 (1993-11-01), McClure
patent: 5386391 (1995-01-01), Watanabe
patent: 5450019 (1995-09-01), McClure et al.
patent: 5544105 (1996-08-01), Hirose et al.
patent: 5661417 (1997-08-01), Kondoh
Hudspeth David R.
Hyundai Electronics Industries Co,. Ltd.
LandOfFree
Data bus drive circuit for semiconductor memory device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Data bus drive circuit for semiconductor memory device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data bus drive circuit for semiconductor memory device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2061441