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Digital tube display and button control chip with array display multiplexing algorithm

An array type, digital tube technology, applied in the direction of static indicators, instruments, etc., can solve the problems of increased wafer area and high packaging cost, and achieve the effects of improving ease of use, optimizing the number of interface pins, and high flexibility

Active Publication Date: 2015-09-30
FUZHOU FUDA HISI MICROELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the display drivers of this type of nixie tubes adopt the segment and bit direct drive technology of nixie tubes. Taking the driving display of 12-bit nixie tubes as an example, which can be achieved by the present invention, at least 12 bit pins+8 segment leads are required. Pins, together with power supply and ground and data communication pins, at least 24 pins are required to achieve it. Too many output pins will increase the wafer area and increase the packaging cost.

Method used

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  • Digital tube display and button control chip with array display multiplexing algorithm
  • Digital tube display and button control chip with array display multiplexing algorithm
  • Digital tube display and button control chip with array display multiplexing algorithm

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the specific embodiments of the accompanying drawings. (but not limitation of the invention).

[0016] Such as figure 1 Shown is a chip structure block diagram of an embodiment of the present invention, the present invention

[0017] The chip is equipped with two-wire serial interface module, command decoder module; array display multiplexing timing control module, output latch module; brightness adjustment module; key scanning timing control module, shift register module; key input judgment Module, key scan storage module and output drive module; at the same time, built-in oscillation circuit module, reset circuit module, etc.; two-wire serial signal DIO / CLK through two-wire Mode The serial interface module is connected with the command decoder module, and the communication between the modules is two-way communication; the command decoder module and the brightness adjustment module, the array ...

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PUM

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Abstract

The invention relates to an LED digital tube display and key control chip with an array display multiplexing algorithm. The chip is internally provided with a second-line-type serial interface module, a command decoder module, an array display multiplexing control module, an output latch module, a brightness adjusting module, a key scanning time sequence control module, a shifting storage module, a key input judging module, a key scanning storage module and an output driving module, and meanwhile internally provided with an oscillating circuit module and a reset circuit module. According to the LED digital tube display and key control special chip with the array display multiplexing algorithm, the 12-digit and 8-segment digital tube display driving and 4*8=32-key control function inside a 16-pin packaging chip can be achieved.

Description

technical field [0001] The invention relates to an LED digital tube display and button control chip with an array display multiplexing algorithm. Background technique [0002] At present, LED (light-emitting diode) digital tube display drivers are widely used in product display in various fields such as set-top boxes, induction cookers, micro-stoves, electronic scales, massagers and other small household appliances, instruments and meters, and medical equipment. Most of the display drivers of this type of nixie tubes adopt the segment and bit direct drive technology of nixie tubes. Taking what the present invention can achieve, driving and displaying 12-bit nixie tubes as an example requires at least 12 bit pins+8 segment pins. Pins, together with power supply and ground and data communication pins, at least 24 pins are required to achieve it. Too many output pins will increase the wafer area and increase the packaging cost. The arrayed display multiplexing technology of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
Inventor 刘伟城
Owner FUZHOU FUDA HISI MICROELECTRONICS
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