4-Bit Synchronous Counter IC With Integrated MOD-10 Reset
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing 4-bit binary counters require external circuitry for MOD-10 operation and lack inherent dual-mode capability as both MOD-10 and MOD-16 counters, complicating system integration and increasing cost.
Innovation Solution
A 4-bit synchronous counter IC with a ripple carry-out pin and loading functionality, featuring an active-low output count indication pin (C10) that automatically resets when the count exceeds a single digit, enabling direct integration as either a MOD-10 or MOD-16 counter without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a 4-bit counter is implemented as a MOD-10 counter using classical circuitry, then the counter can function as a decade counter, but extra external circuitry is required
Solution Approach 1:
The patent merges the MOD-10 and MOD-16 counter functionalities into a single integrated circuit by internally integrating the reset logic and count indication circuits. The C10 output pin is generated internally through logic circuits that detect when the count reaches 10, and this signal is fed back to the CLR input to enable automatic reset. This internal integration eliminates the need for external circuitry while maintaining dual-mode operation capability.
Solution Approach 2:
The counter IC is designed with universal functionality to operate in both MOD-10 and MOD-16 modes using the same basic circuit structure. The presence of the C10 output pin and its connection to the CLR input enables MOD-10 operation, while the same circuit naturally supports MOD-16 operation when the reset connection is not utilized. This multi-functionality is achieved through careful design of the internal logic circuits that can serve both counting modes.
2Extent of automation
If external circuitry is added to enable MOD-10 operation, then automatic reset is achieved, but system complexity and cost increase
Solution Approach 1:
The counter IC performs automatic reset without requiring external service or control circuits. The C10 output pin automatically detects when the count reaches 10 and generates a reset signal that is fed back to the CLR input pin. This self-service mechanism eliminates the need for external logic gates, flip-flops, or other circuitry that would traditionally be required to implement automatic reset functionality.
Solution Approach 2:
The patent implements feedback by connecting the C10 output pin to the CLR input pin. The C10 pin generates a signal based on the current count state, and this signal is fed back to the CLR input to trigger reset when appropriate. This feedback mechanism enables automatic reset functionality while keeping the circuit minimal and integrated within the IC.
3Adaptability or versatility
If a 4-bit counter is designed with loading functionality, then flexibility is improved, but device complexity increases
Solution Approach 1:
The counter IC incorporates dynamic loading functionality that allows the count value to be changed during operation. The loading capability is implemented through control logic that can selectively load external values into the counter when the LOAD pin is activated. This dynamic feature adds flexibility without significantly increasing complexity, as the loading mechanism shares common circuit resources with the normal counting operation.
Data Source
AI summary
A multi-bit binary counter outputs a predetermined binary number of bits reflecting a number of times of triggering an input pin, and providing a binary counter output having a decimal equivalent. A multi-bit binary counter is implemented as a multi-bit synchronous counter IC chip with a ripple carry-out pin and loading functionality. An active output count indication pin is connected to cause the IC to transition states, such as from a HIGH state to a LOW state, when the counter output's decimal equivalent exceeds single-digit numbers. In one configuration, the counter functions selectively as a MOD-10 (decade) or MOD-16 binary counter.