Disposable programmable memory controller, integrated circuit and program burning method

A memory controller and programming circuit technology, applied in the field of integrated circuits, can solve the problems of chip anti-interference, user data security test cost and efficiency differences, etc., and achieve the effects of easy programming and verification, simple protocol, and easy operation.

Active Publication Date: 2016-10-05
SHANGHAI SINOMCU MICROELECTRONICS
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to realize the program programming and testing requirements of OTP microcontroller chips, based on the OTP memory read and write timing specifications, different chip design manufacturers have different implementation methods, but in the end their chips are in the anti-interference, user data security, test There are large differences in cost and efficiency

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  • Disposable programmable memory controller, integrated circuit and program burning method
  • Disposable programmable memory controller, integrated circuit and program burning method
  • Disposable programmable memory controller, integrated circuit and program burning method

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Embodiment Construction

[0040] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] 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 in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0042] The object of the present invention is to provide a program programming circuit and method based on an OTP microcontroller chip that has strong anti-interference, user data security, and can improve efficiency on the basis of effectively reducing test costs.

[0043] In order to realize the purpose of the above invention, the present invention discloses an OTP type microcontroller chip. Such as figure 1 As shown, the OTP microcontroller chip 1 includes: an...

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Abstract

The invention discloses a disposable programmable memory controller. The disposable programmable memory controller comprises an unlocking circuit, an instruction decoding circuit and a programming circuit, wherein the unlocking circuit is used for receiving a level signal and a serial data signal, and sending an unlocking signal when the level signal and the serial data signal satisfy a specific time sequence; the instruction decoding circuit is connected with the unlocking circuit, and is used for receiving an instruction code and a serial clock signal in the serial data signal and executing a decoding operation when receiving the unlocking signal; and the programming circuit is connected with the instruction decoding circuit, and is used for receiving the serial data signal and the serial clock signal according to a programming starting signal output by the instruction decoding circuit and writing data in the serial data signal into the disposable programmable memory. The invention furthermore discloses an integrated circuit and a disposable programmable memory program burning method.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a memory controller of an OTP type microcontroller chip in the field and a program programming method. Background technique [0002] OTP (One Time Programmable) one-time programmable memory, because of its cheap price, small area and reliable data storage, is widely used in 8-bit / 16-bit / 32-bit microcontroller chips to store user programs or data. When the chip leaves the factory, the content stored in the OTP is all 1, and the user can write some cells into data 0 as needed to achieve the purpose of "programming". The typical product of OTP is "bipolar fuse structure". If you want to rewrite some cells, you can pass a large enough current (high voltage programming) to these cells and maintain it for a certain period of time. The fuses related to these cells are It can be blown, so that the effect of writing some units as 1 is achieved. Since OTP data modification is realized ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C17/16
Inventor 杨维张文荣陆健王成王鹏徐学良
Owner SHANGHAI SINOMCU MICROELECTRONICS
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