Self-Proofreading IC Using OTP Memory to Eliminate External EEPROM
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Solution Overview
Problem
Conventional integrated circuits require an external EEPROM for proofreading, increasing system cost and complexity, and necessitate additional voltage sources for the proofreading process.
Innovation Solution
An integrated circuit with a self-proofreading function, incorporating a micro control unit (MCU) and a one-time programmable (OTP) memory that stores instructions and standard parameters, allowing for internal proofreading without external memory, using an electrical charge pump to enhance voltage for recording standard parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external EEPROM is used to store proofreading parameters, then the proofreading function can be implemented, but the system cost and device complexity increase
Solution Approach 1:
The patent merges the proofreading parameter storage function into the internal memory of the integrated circuit, combining the MCU and memory into a single chip. This eliminates the need for external EEPROM and reduces system complexity while maintaining the proofreading capability through integrated parameter storage and processing
Solution Approach 2:
The integrated circuit performs multiple functions including sensing, analog-to-digital conversion, proofreading parameter storage, and measurement computation within a single device. The MCU can both store and retrieve proofreading parameters, eliminating the need for separate external memory components
2Reliability
If an external EEPROM is used for proofreading, then standard parameters can be stored, but additional voltage sources are required
Solution Approach 1:
The patent combines the power supply function into the integrated circuit by providing a single voltage source that powers both the MCU and internal memory. This eliminates the need for separate voltage sources required by external EEPROM, reducing power consumption and simplifying the power supply system
3Ease of operation
If an external EEPROM is connected to the IC, then the proofreading parameters can be accessed, but the number of components and system cost increase
Solution Approach 1:
The patent integrates the memory function directly into the MCU, allowing proofreading parameters to be stored and accessed internally without external components. This maintains ease of parameter access through direct memory addressing while significantly reducing the number of system components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution reduces the number of components and cost in the terminal electronic measuring apparatus by enabling self-proofreading, eliminating the need for external memory and additional voltage sources, thereby simplifying the proofreading procedure and enhancing operational efficiency.
Implementation Method 1
using an electrical charge pump to enhance voltage for recording standard parameters
Data Source
AI summary
An integrated circuit (IC) with a self-proofreading function includes a micro control unit (MCU) and a one-time programmable (OTP) memory connected with the MCU. The OTP memory includes an instruction memory region for storing instructions and a parameter memory region for storing standard parameters for proofreading. The MCU computes a measured result according to the standard parameters. The IC can operate without an external memory, therefore, the proofreading procedure using the IC is simplified, and the cost of the terminal product using the IC can be reduced.