Fuse trimming control circuit
A technology for controlling circuits and fuses, which is applied in the direction of using backup circuits to improve reliability and improving reliability, etc. It can solve the problems of complex manufacturing process, high manufacturing cost, and large occupied area, and achieve the effect of clear logic
Pending Publication Date: 2021-12-17
58TH RES INST OF CETC
View PDF0 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The trimming accuracy of laser trimming is very high, but the trimming cost is high, and it can only be realized on the bare chip, so the impact of packaging is inevitable; although the diode antifuse trimming can be performed after packaging, it occupies a large area. Disadvantages; the storage unit adjustment can be repeatedly erased and written, but the design structure and process manufacturing are complicated and the manufacturing cost is high; there are usually two types of fuse adjustment, metal fuse and poly fuse, through the PAD at both ends of the metal fuse through the probe Increase the current to make it blown, and more PADs are required for circuits that require multiple metal fuse adjustments, resulting in a larger occupied area
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] A fuse trimming control circuit proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.
[0026] In order to better describe the characteristics of the present invention, the chip refers to the whole chip circuit hereinafter, and the fuse trimming control circuit of the present invention is a part of the whole chip, which is referred to as the trimming circuit for short in the text.
[0027] The present invention provides a fuse trimming control circuit, including Conf configuration module, Fuse module and FuseCtrl control module, its structure is as follows ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a fuse trimming control circuit, which belongs to the field of semiconductor integrated circuits and comprises a Conf configuration module, a Fuse module and a FuseCtrl control module. The Conf configuration module is used for determining the enabling of a FuseCell unit in the Fuse module, and the FuseCtrl control module is used for determining the working mode of the Fuse module; wherein the working modes of the Fuse module comprise a pre-trimming mode, a permanent trimming mode and a Fuse state reading mode, the working modes can be switched on line, and re-power-on is not needed. The fuse trimming control circuit can be firstly packaged and then trimmed, the influence of a chip on circuit parameters in the packaging process is avoided, and any number of poly fuses can be controlled only through two external ports, one external port providing a clock signal ck, and the other external port providing a data signal Data. The circuit is clear in logic, simple to control and convenient to implement.
Description
technical field [0001] The invention relates to the technical field of semiconductor integrated circuits, in particular to a fuse trimming control circuit. Background technique [0002] At present, the main trimming methods are as follows: laser trimming, diode antifuse trimming, storage unit trimming, and fuse trimming. The trimming accuracy of laser trimming is very high, but the trimming cost is high, and it can only be realized on the bare chip, so the impact of packaging is inevitable; although the diode antifuse trimming can be performed after packaging, it occupies a large area. Disadvantages; storage unit adjustment can be repeatedly erased and written, but the design structure, process manufacturing is complicated and the manufacturing cost is high; fuse adjustment often has two kinds of metal fuse and poly fuse, through the probe at the PAD at both ends of the metal fuse Increase the current to make it blown, and more PADs are required for circuits that require mu...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H03K19/003
CPCH03K19/00392Y02D10/00
Inventor廖丽李现坤张勇
Owner58TH RES INST OF CETC