Master-Slave Flip-Flop Clocking for High Speed and Low Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Designing low-power, high-speed, and small-area positive edge-triggered master-slave flip-flop circuits for mobile devices is challenging due to the need for balancing power consumption and performance, as increasing demands for faster operating speeds in mobile devices lead to increased power consumption.
Innovation Solution
The implementation of a positive edge-triggered master-slave flip-flop circuit with a shared clock signal input node, utilizing a first inverting circuit, a transmission gate with PMOS and NMOS transistors, and a keeper/latch circuit configuration that enables efficient signal processing and reduces power consumption by controlling the enablement of input stages and transmission gates based on clock and inverted clock signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the operating speed of flip-flop circuits is increased to meet performance demands, then the operating speed is improved, but power consumption increases
Solution Approach 1:
The flip-flop circuit is divided into a master latch and a slave latch, each with separate input stages and transmission gates. This segmentation allows independent control of power consumption in each stage while maintaining high-speed operation through pipelined signal processing.
Solution Approach 2:
The circuit uses periodic clock signals to control the transmission gates and switch between master and slave latches. The clock signal periodically enables data capture in the master latch and then transfers it to the slave latch, allowing the circuit to operate at high speeds while consuming power only during active switching periods rather than continuously.
2Area of moving object
If the area of flip-flop circuits is reduced to save chip space, then the area is improved, but circuit complexity increases
Solution Approach 1:
Adjacent flip-flop circuits share common clock signal input nodes and complementary clock signal generation circuits. This merging reduces the total area required for clock distribution and inverting circuits while the internal structure of each flip-flop is optimized with compact transmission gates and integrated input stages to minimize individual cell area.
Data Source
AI summary
An integrated circuit includes a plurality of positive edge-triggered master-slave flip-flop circuits sharing a clock signal. At least one of the positive edge-triggered master-slave flip-flop circuits includes; an input stage that provides a first output signal generated from an input signal in response to the clock signal and an inverted clock signal, a first inverting circuit that generates the inverted clock signal by delaying the clock signal, a transmission gate that receives a second output signal and generates a final output signal, and a second inverting circuit that receives the first output signal and generates the second output signal from the first output signal. The clock signal is applied to an NMOS transistor of the transmission gate and a PMOS transistor of the input stage, and the inverted clock signal is applied to a PMOS transistor of the transmission gate and an NMOS transistor of the input stage.