Programmable asynchronous triggering time delayer, and method of use

A trigger and delay technology

Inactive Publication Date: 2006-07-05
科圆半导体(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a programmable asynchronous trigger delayer and its use method, which simplifies the circuit structure by using several

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  • Programmable asynchronous triggering time delayer, and method of use
  • Programmable asynchronous triggering time delayer, and method of use
  • Programmable asynchronous triggering time delayer, and method of use

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Example Embodiment

[0016] The circuit structure of the programmable asynchronous trigger delay device of the present invention is as follows: figure 2 As shown, it includes n T' flip-flops, the n T' flip-flops are connected one by one, the output terminal of the previous T' flip-flop is connected to the CLK terminal of the next T' flip-flop, and the first T' flip-flop is connected to the CLK terminal of the next T' flip-flop. The CLK terminal of the 'flip-flop is connected to the external clock pulse, the SET terminal and the RST terminal of these T' flip-flops are count value input terminals, from the first T' flip-flop to the nth T' flip-flop corresponding to the input binary From the lowest bit to the highest bit of the data, the present invention also includes the n+1th T' flip-flop, the CLK terminal of the T' flip-flop is connected to the output end of the nth T' flip-flop, and the output of the T' flip-flop The terminal is the output terminal of the delay signal, and the number n of the T...

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Abstract

The invention includes following parts and structures: triggering delayer includes several pieces of Tíõtrigger connected to each other one by one in sequence; output end of the previous Tíõtrigger is connected to CLK end of the next Tíõtrigger; CLK end of first Tíõtrigger is connected to external clock pulse; output end of the last Tíõtrigger is the output end of the delayed signal. Method of use is as following: setting up RST end and SET end of each trigger according to delay time, and then disabling two pieces of input end; inputting fixed clock pulse. Using the output of final trigger as delayed output signal, the invention simplifies structure of circuit, and solves the issue that additional gate control circuit is needed in general asynchronous trigger. Features are: easy of changing or controlling delayed time, and suitable to instance of large delayed time needed.

Description

technical field [0001] The invention relates to a programmable asynchronous trigger delayer, in particular to a programmable asynchronous trigger delayer composed of triggers. The invention also relates to a method for using a programmable asynchronous trigger delayer. Background technique [0002] In the existing electronic measurement and integrated circuit design technology, the delay circuit is generally implemented by means of resistance and capacitance delay or synchronous trigger latch trigger or asynchronous trigger. [0003] Resistor-capacitor delay is not only difficult to control the delay accuracy, but also requires a large layout area, especially where a large delay is required (such as a second-level delay). [0004] Regardless of whether the synchronous trigger latch flip-flop or the general asynchronous trigger method is used, in addition to the oscillator and flip-flop, some additional gate logic control circuits are required, such as figure 1 shown. Sync...

Claims

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Application Information

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IPC IPC(8): H03K5/13H03K5/14
Inventor 吴镔
Owner 科圆半导体(上海)有限公司
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