Starting method and starting system of embedding type electronic device

Abstract

The invention relates to the field of embedding type electronic devices and discloses a starting method and a starting system of the embedding type electronic device. The method and the system guide system start through starting program stored in a NAND FLASH chip. After an embedding type processor of the embedding type electronic device is electrified and initialized, the processor reads starting codes and data in the NAND FLASH chip in trying command reading mode and copies the codes and the data in a random access memory (RAM) storage space, then a program pointer is pointed at the initial position of the starting codes stored in the RAM, and control power is consigned to the starting codes to achieve system start finally. The starting method and the starting system utilize utility command trying method to achieve the NAND FLASH start of the embedding type processor, are compatible with various NAND FLASH chips to the largest extent, are favorable for reducing manufacture cost and area of chips of the embedding type processor, remove complex operation of a user and facilitate user integration.

Description

technical field [0001] The invention relates to the field of embedded electronic equipment, in particular to an embedded electronic equipment starting method and system for guiding system startup by using a startup program stored in a NAND FLASH chip. Background technique [0002] In modern electronic equipment, the storage medium is constantly developing in the direction of large capacity, low cost, low power consumption, and high efficiency. At present, most of them use FLASH memory, also known as flash memory, which is a kind of non-volatile memory, which can erase, write and reprogram the memory cells called blocks. Existing flash memories are mainly divided into two specifications: one is NAND FLASH, which mainly stores data; the other is NOR FLASH, which mainly stores program codes. NAND FLASH has been widely used in the market due to its low cost, large capacity, simple interface, and fast speed. It is gradually replacing the commonly used NOR FLASH and has become th...

AI Technical Summary

Problems solved by technology

This technology needs to implement a rewritable NOR FLASH device in the embedded processor chip, and the area of ​​the NOR FLASH device is huge, which seriously increases the manufacturing cost of the embedded processor chip, and the user needs to operate Complicated steps of erasing and programming, lack of ease of use

[0008] The above three existing technologies for realizing NAND FLASH startup compatibility have their own shortcomings, mainly focusing on increasing the manufacturing cost of embedded processor chips and increasing the complexity of user use, so it is necessary to design a new startup solution

Images