Multi-Bit Flip-Flop Footprint Using Mixed Row Heights
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multi-bit flip-flop circuits in electronic systems face limitations due to similar circuit topology and sizing, leading to constrained flexibility in topology and device sizing, which affects power, performance, and area efficiency.
Innovation Solution
The implementation of multi-bit flip-flop circuits with mixed row height structures, where cells with different row heights are arranged in alternating patterns, allowing for varied circuit topologies and device sizing, thereby optimizing power, performance, and area usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If uniform cell height structures are used in multi-bit flip-flop circuits, then manufacturing simplicity is maintained, but flexibility in circuit topology and device sizing is constrained
Solution Approach 1:
The flip-flop circuit is divided into multiple cell rows with different heights (first cell rows with first height, second cell rows with second height). Each cell row segment can be independently configured with appropriate transistor devices, allowing flexible topology design while maintaining manufacturing feasibility through systematic segmentation of the circuit architecture.
Solution Approach 2:
Different cell rows are assigned different heights and transistor device configurations based on local functional requirements. First cell rows may use first transistor devices with specific characteristics while second cell rows use second transistor devices with different characteristics, optimizing performance for specific circuit functions in different locations.
2Use of energy by moving object
If similar circuit topology and sizing are used, then manufacturing consistency is maintained, but power and area efficiency are reduced
Solution Approach 1:
Transistor devices in different cell rows are sized and configured according to local power and performance requirements. First transistor devices in first cell rows and second transistor devices in second cell rows can have different dimensions, threshold voltages, or other parameters optimized for their specific functional contexts, improving overall power efficiency.
Solution Approach 2:
The patent varies physical parameters of transistor devices including size, threshold voltage, or other characteristics across different cell rows to optimize power consumption and performance. This parameter variation allows the circuit to achieve better power efficiency by matching device characteristics to functional requirements.
3Productivity
If varied transistor devices are used in different cell rows, then performance optimization is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The circuit is segmented into standardized cell row types (first cell rows and second cell rows) that can be manufactured using established fabrication processes. Each segment type has defined transistor device characteristics, allowing high-speed performance through optimized design while maintaining manufacturing precision through standardized production approaches for each segment type.
Data Source
AI summary
An integrated circuit includes first bit cells, second bit cells, and clock cells. Each of first bit cells is arranged in one of multiple first cell rows having a first row height. Each of the second bit cells is arranged in one of multiple second cells rows having a second row height different from the first row height. The second bit cells extend to pass the first bit cells in a first direction. The clock cells are arranged in peripheral regions of a multi-bit flip flop cell in the first cell rows. The first and second bit cells and the clock cells are included in the multi-bit flip flop cell.