In-Memory Signed Division via Sensing Circuitry
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Solution Overview
Problem
Existing semiconductor memory systems face inefficiencies in performing signed division operations, particularly due to the need to transfer data between memory arrays and processing resources, which consumes significant power and time, and are limited by the mismatch in pitch between memory cells and processing circuitry.
Innovation Solution
The implementation of sensing circuitry within the memory array that can perform signed division operations on bit-vectors without transferring data via input/output lines, using operations like AND, OR, SHIFT, and INVERT, and being formed on the same pitch as complementary sense lines to reduce computations and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If data is transferred between memory arrays and processing resources via input/output lines, then signed division operations can be performed, but power consumption and time increase significantly
Solution Approach 1:
The patent merges the processing function with the memory array by implementing sensing circuitry that can perform signed division operations directly within the memory array structure. This eliminates the need for separate processing resources and data transfer via input/output lines, thereby reducing power consumption while maintaining division operation efficiency through in-memory computation.
2Loss of time
If data is transferred between memory arrays and processing resources, then signed division operations can be executed, but time consumption increases
Solution Approach 1:
The patent combines the division operation functionality directly into the memory array through sensing circuitry, eliminating the time-consuming data transfer process between memory arrays and external processing resources. This in-memory computation approach significantly reduces time consumption while maintaining high division operation throughput.
3Productivity
If sensing circuitry is formed on the same pitch as complementary sense lines, then computational efficiency improves, but device complexity increases
Solution Approach 1:
The sensing circuitry is designed to perform multiple functions including data sensing and signed division operations using a unified structure formed on the same pitch as complementary sense lines. This multi-functional design improves computational efficiency by eliminating the need for separate processing resources while the structured approach to circuit design helps manage device complexity through systematic integration.
Data Source
AI summary
Examples of the present disclosure provide apparatuses and methods for performing signed division operations. An apparatus can include a first group of memory cells coupled to a sense line and to a number of first access lines. The apparatus can include a second group of memory cells coupled to the sense line and to a number of second access lines. The apparatus can include a controller configured to operate sensing circuitry to divide a signed dividend element stored in the first group of memory cells by a signed divisor element stored in the second group of memory cells by performing a number of operations.