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SOC (System On a Chip) chip device

A chip and device technology, which is applied in the field of SOC chip devices, can solve the problems such as increase, and achieve the effect of reducing interference, reducing electromagnetic radiation, and improving signal-to-noise ratio

Active Publication Date: 2011-11-16
RDA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a high-speed signal is extremely easy to generate high-frequency radiation signals
At the same time, there are many SDRAM signal lines, and the radiation sources also increase, which puts forward high requirements for board-level EMI (electromagnetic compatibility)

Method used

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  • SOC (System On a Chip) chip device
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Embodiment Construction

[0013] Electromagnetic interference is EMI (Electromagnetic Interference), which means that the system emits electromagnetic waves through conduction or radiation and affects the normal operation of other systems or other subsystems in the system. For EMI, it can be divided into three forms: radiation interference, conduction interference and inductive coupling interference according to the way of electromagnetic interference. Radiation interference means that if the disturbance source is not in a fully enclosed metal shell, it can radiate electromagnetic waves through space. The radiation field strength depends on the disturbance current intensity of the device, the equivalent impedance of the device, and the disturbance source. transmit frequency. If the metal shell of the disturbance source has gaps and holes, the intensity of the radiation is related to the wavelength of the interference signal. When the size and wavelength of the hole can be compared, it can form an inte...

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Abstract

The present invention discloses an SOC ((System On a Chip)) chip device. The SOC chip device encapsulation comprises a SDRAM (Synchronous Dynamic Random Access Memory) chip, wherein the SDRAM chip is connected with the SOC chip by gold wires. Moreover, a rise and fall time control circuit including an on-off circuit is arranged on a pin connecting the SOC chip and the SDRA chip. The SOC chip device effectively reduces electromagnetic radiation generated by SDRAM signal wires, and the interference of a wireless front end by the SDRAM signal wires is reduced, and the signal to noise ratio of last received signals and the integration level of the device are provided.

Description

technical field [0001] The invention relates to a semiconductor device, especially a SOC chip device. Background technique [0002] SDRAM (synchronous dynamic random access memory) synchronous dynamic random access memory is widely used in modern electronic design. Its biggest feature is high capacity and high speed, and it is used as data storage space or program storage space. It usually runs at a frequency of tens of megabytes or even hundreds of megabytes. Such a high-speed signal is extremely easy to generate high-frequency radiation signals. At the same time, there are many SDRAM signal lines, and the radiation sources also increase accordingly, which puts forward very high requirements for board-level EMI (electromagnetic compatibility). In the design of handheld terminal solutions, the radiation of high-speed devices such as SDRAM and FLASH has always been a difficult problem. In the prior art, in order to avoid the interference caused by radiation, the SDRAM chi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L25/18H01L23/52H01L23/49
CPCH01L2924/0002
Inventor 张亮罗升龙
Owner RDA TECH