Precharge circuitry and bus for low power applications

Details Precharge circuitry and bus for low power applications Precharge circuitry and bus for low power applications

1993-05-28

1994-09-13

Teska, Kevin J.

Boots, shoes, and leggings

368 10, 395775, 364DIG1, 364DIG2, G06F 1300, G06F 1338

Patent

active

053474724

ABSTRACT:
A low-power integrated circuit clock/calendar, wherein separate data busses are used for the time data and the alarm data. Conditional logic is used to only compare seconds bits (unless a match occurs, in which case higher-order bits are then compared). Thus, charging and discharging of the data busses (which carrying the time data) occurs only when a data transition is occurring. A special clocked latch circuit is used to hold the potential of each line of the time data bus constant, except when the data on the bus is actually changing. These innovations help to provide extremely long battery lifetime, since charge is not consumed by unnecessarily charging and discharging busses. Preferably this bus architecture is combined with a low-power logic architecture.

REFERENCES:
patent: 3973110 (1976-08-01), Rode et al.
patent: 4217654 (1980-08-01), Ebihara et al.
patent: 4238832 (1980-12-01), Tsuzuki et al.
patent: 4348743 (1982-09-01), Dozier
patent: 4387420 (1983-06-01), Singhi et al.
patent: 4396293 (1983-08-01), Mizoguchi
patent: 4424567 (1984-01-01), Yasutake
patent: 4602347 (1986-07-01), Koyama
patent: 4677541 (1987-06-01), Singhi
patent: 4851987 (1989-07-01), Day
patent: 4891776 (1990-01-01), Kuroki et al.
patent: 5003501 (1991-03-01), Podkowa

Affiliated with

Also associated with

Rating

Precharge circuitry and bus for low power applications does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Precharge circuitry and bus for low power applications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Precharge circuitry and bus for low power applications will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1125320