Signal conversion circuit applied to fuse circuits
A signal conversion and conversion circuit technology, which is applied in the direction of logic circuit coupling/interface and logic circuit connection/interface layout using field effect transistors, can solve the problems of occupied area or large power consumption, and achieve small power consumption and circuit area small effect
Active Publication Date: 2014-07-09
XI AN UNIIC SEMICON CO LTD
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Problems solved by technology
[0005] In order to solve the problem of large occupied area or power consumption caused by the use of level conversion circuits in traditional solutions, the present invention proposes a new signal conversion circuit applied to fuse circuits
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[0018] like figure 2 As shown, the present invention adds a parallel-to-serial conversion circuit (parallel to serial) after the original n-bit fuse circuit to convert the n-bit parallel output signal of the n-bit fuse circuit into a 1-bit serial signal. In this way, a 1-bit serial signal only needs a 1-bit level conversion circuit to realize signal conversion between different power sources. The 1-bit serial signal output by the level conversion circuit is connected to the serial→parallel conversion circuit (serial to parallel), through the serial→parallel conversion circuit, the 1-bit serial signal is converted into an n-bit parallel signal, and output to other circuits for use . Correspondingly, an additional control circuit needs to be set up to control the parallel-to-serial conversion circuit and the serial-to-parallel conversion circuit.
[0019] like image 3 As shown, the present invention provides a basic structure of a control circuit. The main function of the ...
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The invention discloses a novel signal conversion circuit applied to fuse circuits. The signal conversion circuit applied to the fuse circuits mainly comprises a control circuit, a one-bit level switching circuit, a parallel-to-series circuit and a series-to-parallel circuit, wherein the control circuit controls the parallel-to-series circuit and the series-to-parallel circuit to enable m bits of signals output by n bits of fuse circuits to be converted into serial signals through the parallel-to-series circuit, then level switching is achieved through the one-bit level switching circuit, signals subjected to level switching are output in parallel into m bits finally through the series-to-parallel circuit, and m<=n. According to the signal conversion circuit applied to the fuse circuits, the functions of the prior art are realized by means of only one one-bit level switching circuit; although the control circuit, the parallel-to-series circuit and the series-to-parallel circuit are additionally arranged, the increased circuit area is small and power consumption is small compared with an n-bit level switching circuit.
Description
technical field [0001] The invention relates to the field of electronic chips, in particular to a signal conversion circuit structure applied to a fuse circuit. Background technique [0002] In the design and manufacture of chips, fuse circuits are often used. The main function of the fuse is: after the chip production is completed, the fuse needs to be switched according to the test result or function setting. Its switching is mainly to blow the preset fuse in the chip by laser, so as to change the hard connection of the circuit and change the working state or function of the circuit. [0003] Due to different working power sources, the output signal of the fuse circuit cannot be directly used by the circuit. The signal of the fuse circuit needs to be processed by the level conversion circuit before being output to other circuits for use. Usually, each bit of fuse circuit is connected to a bit of level conversion circuit. like figure 1 As shown, it is the fuse circuit ...
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IPC IPC(8): H03K19/0185
Inventor 李晓骏
Owner XI AN UNIIC SEMICON CO LTD