Flip-Flop Timing Control for Faster Low-Power Data Transfer
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Solution Overview
Problem
Conventional flip-flop circuits face challenges due to the significant difference in current driving forces between p-type and n-type transistors, leading to slow operating speeds and difficulties in applying organic transistors to RFID and other semiconductor integrated circuit devices, as well as inorganic transistors like MOS FETs.
Innovation Solution
A flip-flop circuit design that includes a data capture circuit, a data hold circuit, and a timing control circuit, which temporarily interrupts the coupling between the data capture and hold circuits based on a clock signal to manage the transition of data, thereby reducing conflicts and improving operating speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional flip-flop circuits are used with organic transistors, then low power consumption is achieved, but operating speed becomes very slow due to large difference between current driving forces of p-type and n-type transistors
Solution Approach 1:
The flip-flop circuit is divided into separate data capture circuit and data hold circuit with timing control circuit managing their coupling. This segmentation allows independent optimization of each module, enabling the capture circuit to use transistors optimized for speed while the hold circuit uses transistors optimized for low power consumption, thus resolving the contradiction between operating speed and power consumption
Solution Approach 2:
The timing control circuit dynamically controls the coupling between data capture circuit and data hold circuit based on clock signals. By temporarily interrupting coupling during data transitions, the system adapts its connectivity to optimize both speed (during capture) and power consumption (during hold), preventing simultaneous operation conflicts while maintaining high performance
2Device complexity
If conventional flip-flop circuits are used, then simple circuit structure is maintained, but conflicts and delays between new and preceding data occur due to large difference in current driving forces
Solution Approach 1:
The timing control circuit acts as an intermediary between the data capture circuit and data hold circuit. It controls the coupling timing to prevent conflicts between new data being captured and preceding data being held, eliminating data transition conflicts and delays without requiring complex redesign of the core flip-flop logic, thus maintaining relatively simple circuit structure while improving reliability
3Use of energy by moving object
If organic transistors are used in conventional flip-flop circuits, then low power consumption is achieved, but it becomes difficult to apply to RFID due to very slow operating speed
Solution Approach 1:
By segmenting the flip-flop circuit into capture and hold portions with independent transistor optimization, the system achieves RFID-compatible operating speeds in the capture circuit while maintaining low power consumption in the hold circuit, making organic transistor implementation viable for RFID applications
Solution Approach 2:
The dynamic timing control enables the circuit to switch between speed-optimized mode (during data capture for RFID communication) and power-optimized mode (during data holding), allowing organic transistors to meet both the speed requirements of RFID and the power consumption advantages of organic semiconductor technology
Data Source
AI summary
A flip-flop circuit includes a data capture circuit that captures data based on a clock, a data hold circuit that holds an output of the data capture circuit based on the clock, and a timing control circuit that controls coupling between the output of the data capture circuit and the data hold circuit based on the clock, when the data capture circuit captures new data based on the clock, the timing control circuit performing control so as to temporarily interrupt the coupling between the output of the data capture circuit and the data hold circuit.