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MCU power-on startup method with configuration word self-test function and self-test method

A configuration word, electric start technology, applied in the direction of program loading/starting, program control device, etc., can solve problems such as abnormal operation

Active Publication Date: 2017-06-23
WUXI I CORE ELECTRONICS
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  • Application Information

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Problems solved by technology

[0017] In order to avoid the problem of abnormal operation caused by misreading configuration words in the existing integrated circuit design of MCU type (especially the memory type is programmable read-only memory), the present invention provides an MCU with configuration word self-test function The electric start method and its self-test method add a configuration word verification process during the entire power-on start-up process

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] The present invention provides a power-on start-up method that adds configuration word self-test. In the whole power-on start process, a configuration word verification process is added. It is necessary to confirm that the configuration word is read correctly before clearing the internal register. According to the correct configuration word The information configures the chip, starts the system clock counting, and then runs the MCU main program.

[0032] Such as figure 2 As shown, in the power-on process of the MCU with configuration word self-check function, the configuration word self-check link is added in the power-on process of the MCU, and its power-on process is mainly completed in five steps:

[0033] (1) After reaching the power-on ...

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Abstract

The present invention provides an MCU power-on start-up method with a configuration word self-check function, and proposes a simple configuration word self-check method to increase the configuration word self-check process during the power-on process of the circuit, and after confirming that the configuration word loaded by the circuit is correct Restart the program of the circuit, otherwise the configuration word will be reloaded until the configuration word is confirmed to be correct. The invention has the advantages of: by adding the self-checking process of the configuration word, it can ensure that the circuit can enter the expected operating state, ensure that the subsequent program operation can work normally, and prevent the circuit from entering an unrecoverable error state.

Description

technical field [0001] The invention relates to a power-on configuration startup technology for MCU integrated circuits, in particular to an MCU power-on startup method with a configuration word self-check function and a self-check method thereof. Background technique [0002] The invention relates to the power-on configuration startup technology of MCU (microprocessor) integrated circuits, mainly aimed at the MCU integration with non-volatile programmable read-only memory and the basic configuration of the circuit, etc. circuit products. [0003] Now MCU products are widely used, especially MCUs with programmable read-only memory (EPROM, EEPROM). For the same MCU product, its program is flexible and variable, and is widely used. For different applications, there are different requirements for system configuration options. These configuration options are generally stored in the programmable read-only memory, and are read and configured in the corresponding state during powe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/445
Inventor 饶喜冰刘明峰陈恒江黄坚俞小平
Owner WUXI I CORE ELECTRONICS
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