CN100505084C - Software updating method for electronic product with FLASH - Google Patents

Software updating method for electronic product with FLASH Download PDF

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CN100505084C
CN100505084C CN 200710075118 CN200710075118A CN100505084C CN 100505084 C CN100505084 C CN 100505084C CN 200710075118 CN200710075118 CN 200710075118 CN 200710075118 A CN200710075118 A CN 200710075118A CN 100505084 C CN100505084 C CN 100505084C
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flash
port
resistor
flash chip
chip
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CN 200710075118
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CN101089991A (en
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颜学武
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深圳市兆驰股份有限公司
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Abstract

本发明公开一种带FLASH的电子产品的软件升级方法,该方法包括:将电子产品的FLASH芯片的写保护口通过第一电阻接地;当进行FLASH芯片升级时,FLASH芯片的写保护口通过第二电阻接高电压,通过第一电阻和第二电阻的分压给FLASH芯片的写保护口提供一个高电平,使得FLASH芯片处于可写状态。 Electronics discloses a belt of the present invention FLASH software upgrade, the method comprising: write protection port electronics FLASH chip is grounded through a first resistor; FLASH chip when upgrading, the write protection by the first port FLASH chip second resistor connected to the high voltage, the protection voltage to the write port FLASH chip divided by the first resistor and the second resistor to provide a high level, so that FLASH chip is writable state. 本发明可在保持电子产品正常工作中,FLASH在I/O电平稳定的情况下,进行软件升级和调试工作,又可以来变I/O口电平状态,从而达到I/O口状态稳定,不易丢失数据,且整机升级和调试方便。 The present invention may be maintained in the normal operation of electronic products, FLASH at I / O level is stable, software upgrades and debugging, but also since the change I / O port state level to achieve the I / O port state is stabilized not easy to lose data, and easy to machine upgrades and debugging.

Description

带FLASH的电子产品的软件升级方法 FLASH electronic products with software upgrade

技术领域 FIELD

本发明涉及电子领域,尤其涉及电子领域中对一些带FLASH的电子产品进行写保护的技术。 The present invention relates to the field of electronics, in particular, it relates to a write-protected in the art electronics with a number of electronic products is FLASH.

背景技术 Background technique

随着电子技术的发展,出现了越来越多的电子产品,如数码相机、MP3、 移动U盘,其中一个最为主要的技术是应用到FLASH技术,即闪存技术。 With the development of electronic technology, more and more electronic products such as digital cameras, MP3, U-Mobile, one of the most major technology is applied to the FLASH technique, namely flash memory technology.

在MP3播放器、数字相机与其它移动娱乐电子产品中,闪存(Flash Memory) 是一种作为储存数字音乐及相片的技术,闪存是一种非挥发性的半导体产品, 即使电源中断也能储存数据。 In MP3 players, digital cameras and other mobile entertainment electronic products, flash memory (Flash Memory) is a is a non-volatile semiconductor storage products as the technology of digital music and photos, flash memory even when the power interruption can also store data .

由于现有电子设备的串行或并行FLASH存储器的写保护方法普遍采用的是1/0口控制写保护口,或者是用硬件方法固定写保护口为一种状态,这两种方法都有其优点和缺点。 Since the conventional electronic device serial or parallel FLASH memory write protection method is commonly used to control write protection 1/0 port mouth, or by a hardware write protection method for fixing as a port state, both methods have their pros and cons.

其中,采用软件I/0 口控制写保护口的方法是指:写保护口可通过软件方法来做读写FLASH 口的控制,优点:可随时做这个写保护的变化,缺点是:由于芯片I/O 口在CPU加电工作和断电瞬间,由于软件无法在这两种状态控制这个I/O 口,从而在加电工作和断电瞬间容易使FLASH的写保护口处于不定状态, FLASH里面的程序常有丢失的可能。 Wherein, in software I / 0 port control port write protection method refers to: write protection port mouth can do FLASH write control software advantages of the method: This can be done at any time to change the write-protected, a drawback: due to the chip I / O port on the CPU is powered off and work the moment, because the software can not control the I / O ports in these two states, and thus work at power-up and power down instantly easy to make write-protected ports are in a state of uncertainty FLASH, FLASH inside the program may often missing.

硬件固定I/0 口的方法是指为I/O 口专门设计一个开关,该方法虽然能够固定I/0口的状态,FLASH不会丢失数据,但是1/0 口不可随意变化,产品的软件升级和调试都不可变化。 Fixing hardware I / 0 refers to a method for the I / O port designed a switch, which can be fixed while I / 0 state, FLASH data is not lost, but is not free to change opening 1/0, software products upgrades and debugging can not be changed.

因此,如果能设计出一种具有FLASH电子产品,其FLASH的写保护功能既能随时做这个写保护的变化,又能不使FLASH里面的程序丢失,将是不错之设计。 Therefore, if we can design a FLASH electronic products have its FLASH write protection not only to do this at any time change write-protected, but not inside the FLASH program is lost, it will be a good design.

发明内容 SUMMARY

有鉴于此,本发明之目的在于提供一种具有FLASH电子产品的软件升级方法,可在保持电子产品正常工作中FLASH在的I/O电平稳定的情况下,在 In view of this, object of the present invention is to provide a method for upgrading software FLASH electronic product has, can be maintained in the FLASH electronic products in normal operation at the I / O level is stable, the

3进行软件升级和调试工作中又可以来变I/O 口电平状态,从而达到I/O 口状态稳 3 software upgrades and debugging work but also to change its I / O port level state, so as to achieve I / O port steady state

定,不易丢失数据,且整机升级和调试方便。 Fixed, not easy to lose data, and easy to machine upgrades and debugging.

一种带FLASH的电子产品,其中:该电子产品包括FLASH芯片、第一电阻、第二电阻,其中,FLASH芯片的写保护口通过第一电阻接地,且,FLASH 芯片的写保护口还与第二电阻的一端相接,当进行FLASH芯片升级时,第二电阻的另一端接一高电压,通过第一电阻和第二电阻的分压给FLASH芯片的写保护口一个高电平。 A tape FLASH electronic products, wherein: the electronic product comprising a FLASH chip, a first resistor, a second resistor, wherein the write protection port FLASH chip through a first resistor to ground, and the write protection port further FLASH chip and the second one end of the second resistor contact, when the FLASH chip upgrade, the other end of the second resistor is a high voltage, voltage to the write port of a FLASH chip protected by the high points of the first and second resistors.

所述第二电阻的另一端接高电压为5V。 The other end of the second resistor is a high voltage is 5V. 所述第二电阻的另一端接PC机的VGA端子J3的第11脚。 The VGA terminal J3 pin 11 the other end of the second resistor the PC. 所述FLASH芯片的VSS引脚接地。 The FLASH chip ground VSS pin.

一种带FLASH的电子产品的软件升级方法,其中,该方法包括: A tape FLASH electronic products software upgrade method, wherein the method comprises:

将电子产品的FLASH芯片的写保护口通过第一电阻接地; The write protection port electronics FLASH chip is grounded via a first resistor;

当进行FLASH芯片升级时,FLASH芯片的写保护口通过第二电阻接高电 When upgrading FLASH chip, chip FLASH write protection port through a second resistor electrically connected to the high

压,通过第一电阻和第二电阻的分压给FLASH芯片的写保护口提供一个高电平, Pressure, to the write protection port provided in a FLASH chip through high points of the first and second resistors pressure,

使得FLASH芯片处于可写状态。 FLASH chip is such that the writable state.

所述FLASH芯片的写保护口通过第二电阻接高电压具体为:所述FLASH The write protection port FLASH chip via a second resistor connected to the high voltage is specifically: the FLASH

芯片的写保护口通过第二电阻接PC机的VGA端子J3的第11脚。 Write protection port chip resistor is connected by a second pin 11 of the PC's VGA terminal J3. 所述高电压为5V。 The high voltage is 5V.

所述当进行FLASH芯片升级时,将升级工具插入PC的VGA端子J3, FLASH芯片的写保护口通过第二电阻接PC机的VGA端子J3的第11脚的高电压。 When performing the FLASH chip upgrade, the upgrade tool inserted into the PC's VGA terminal J3, write protection access port FLASH chip high-voltage pin 11 of the terminals J3 VGA PC, via a second resistor.

与现有技术相比,由于本发明的电子产品的FLASH芯片的写保护口通过第一电阻接地,且,FLASH芯片的写保护口还与第二电阻的一端相接,此时的电平由于是接地,在电子产品的上电和掉电中,该接地引脚的电平变化不会有过充和波动可能,故电子产品开关机瞬时变化都不会影响FLASH芯片的写保护口。 Compared with the prior art, since the write protection port of the electronic products according to the invention by a FLASH chip first resistor to ground, and the write protection port FLASH chip is also in contact with the end of the second resistor, since at this time the level of is grounded, the power-down and power electronics, the level change of the ground pin does not overcharge and fluctuations may therefore electronic switch transient changes will not affect the write protection port FLASH chip. 当进行FLASH芯片升级时,第二电阻的另一端接一高电压,通过第一电阻和第二电阻的分压给FLASH芯片的写保护口一个高电平,由于接地是通过第一电阻接地的,但通过第一电阻和第二电阻的分压给FLASH芯片的写保护口一个高电平,此时写保护口电平还是可以置高电平,就可往FLASH芯片里面写数据,从而完成软件升级,这样就不需要将电子设备打开升级。 When FLASH chip upgrade, the other end of the second resistor is a high voltage, voltage to the write port of a FLASH chip protected by the high points of the first and second resistors, since the ground is a ground through a first resistor However, by division of first and second resistors to a pressure port FLASH chip write protection a high, then the write protection port level or can be set high, which can write data into the FLASH chip, thereby completing the software upgrades, so you do not need to upgrade the electronic device is turned on. 图1为本发明较佳实施方式之电子产品的逻辑示意图; 图2为本发明较佳实施方式之电子产品的电路原理图。 Figure 1 is a schematic diagram of the preferred embodiment of the electronic embodiment of the invention; electronic circuit diagram of the preferred embodiment of FIG. 2 embodiment of the present invention.

具体实施方式 Detailed ways

为使本发明之目的、技术方案、优点更加明确、清楚,以下结合具体实施方式、附图对本发明之技术方案作进一步详细的说明。 For purposes of this invention, the technical solutions, the advantages more clearly apparent the following detailed description, drawings, detailed description of the further aspect of the present invention.

如图1所示,为本发明较佳实施例的一种电子产品逻辑示意图,该电子产品包括FLASH芯片20, FLASH芯片20通过TX、 RX、使能控制口与软件升级工具IO相连,其中,软件升级工具IO可以是单独电路板,手持设备等具有软件安装、升级功能的电子设备。 1, the present embodiment for an electronic schematic of the preferred embodiment of the invention, the electronic product comprising a FLASH chip 20, chip 20 FLASH TX, RX, to enable the control software upgrade tool IO port is connected, wherein IO software upgrade tool may be a separate circuit board, handheld device, etc. having the software installation, upgrades functions of the electronic device.

该电子产品的写保护方式是通过电阻将写保护口接地,将串行或并行FLASH芯片20的写保护口置低电平,此时的电平由于是接地,在电子产品的上电和掉电中,该接地引脚的电平变化不会有过充和波动可能,故电子产品开关机瞬时变化都不会影响FLASH芯片20的写保护口,无论电子产品开关机瞬时变化都不会影响FLASH芯片20的写保护口。 The write protection of the electronic product is write-protected port through a resistor to ground, the serial or parallel port FLASH chip write protect device 20 is low, then the level of the ground because it is, in the electric and electronic products out electricity, the change in the level of the ground pin does not overcharge and fluctuations may therefore electronic switch transient changes will not affect the write protection port FLASH chips 20, regardless of transient changes in electronic switch does not affect FLASH chip is write-protected ports 20.

当进行FLASH芯片20的升级时,由于此时需要将FLASH芯片20的写保护口置高电平,在升级工具10中加入一个使能控制口,升级工具IO通过一个信号端子的引脚,将FLASH芯片20的写保护口置成高电平,例如软件升级工具10是通过PC的VGA插头来升级的,则可在升级VGA插口中的第11脚(该引脚在标准VGA插口的定义中为空脚)接5V直流电压,当插上VGA升级工具时,由于接地是通过一个电阻接地的,但是由于是比较大的电阻,当接5V直流电压时,此时写保护口电平还是可以置高电平,就可往FLASH里面写数据, 从而完成软件升级,这样就不需要将电子产品打开升级。 When upgrading FLASH chips 20, since at this time needs to be set high the write protection port FLASH chip 20, the tool 10 is added in the upgrade to enable a control port, the upgrade tool IO via a signal pin terminals, the FLASH chip write protection port 20 is set to a high level, for example, software upgrades tool 10 is formed by a plug PC VGA to upgrade, the upgrade may be in the VGA connector pin 11 (the pin socket defined in the standard of VGA connected to 5V DC voltage is empty feet), when the plug VGA upgrade tool, since the ground through a resistor to ground, but because it is a relatively large resistance, when connected to 5V DC voltage so that the write protection port level can still set high, you can write data to the FLASH inside, thus completing the software upgrade, eliminating the need to open the electronic product upgrades.

如图2所示,为本发明较佳实施方式之电子产品的电路原理图,该电子产品包括FLASH U6,电阻R202、 R562、 R205,电容C168,跳线插座J119,排阻RP8、 RP9。 2, the preferred embodiment of the present electronic circuit schematic diagram of the invention embodiment, the electronic product includes a FLASH U6, resistors R202, R562, R205, capacitor C168, jumper socket J119, exclusion RP8, RP9. 其中,电阻R202的一端接跳线插座J119引脚2且也接+3.3V电压,另一端接FLASHU6的引脚3 (WI^引脚)、跳线插座J119的引脚1;电阻R562 —端接FLASHEN,另一端接跳线插座Jl 19的引脚1 、 FLASH U6的引脚3; 电阻R205 —端接跳线插座J119的引脚1、 FLASHU6的引脚3,另一端接地、 接FLASHU6的引脚4 (VSS引脚);FLASHU6的引脚6 ( SCK引脚),引脚5(SI引脚),1(C砂引脚),引脚2(SO引脚)分别接排阻RP9的引脚l、 2、 3、 4; FLASH U6的引脚7 (HOLD弁引脚),引脚8 (VDD引脚)相接并同时接电容C1和电压+3.3V;电容C168的另一端接地;排阻RP8的引脚1、 2、 3、 4接上拉电压+3.3V,排阻RP8另一端的引脚5、 6、 7、 8分别连接排阻RP9的引脚8、 7、 6、 5,同时排阻RP8的引脚5、 6、 7、 8还分别接SPI—CK、 SPI—DI、 SPI_CZ、 SPI—DO。 Wherein one end of the resistor R202 J119 jumper socket pin 2 and is also connected to + 3.3V voltage, the other end FLASHU6 pin 3 (WI ^ pin), a jumper pin socket J119; resistor R562 - end flashen connected, the other end of the jumper Jl socket pin 1, FLASH U6 pin 319; a resistor R205 - J119 terminated jumper socket pins 1, FLASHU6 pin 3, the other end is grounded, then the FLASHU6 pin 4 (VSS pin); FLASHU6 pin 6 (SCK pin), pin 5 (SI pin), 1 (C sand pin), pin 2 (SO pin) are respectively connected exclusion RP9 pin l, 2, 3, 4; FLASH U6 pin 7 (HOLD pin Benten), pin 8 (VDD pin) contact to the capacitor C1, while the voltage + 3.3V; and the other end of the capacitor C168 ground; RP8 exclusion pins 1, 2, 3, 4 connected to the pull-up voltage + 3.3V, and the other end of the pin exclusion RP8 5, 6, 7, 8 are connected to pin 8 exclusion RP9, 7, 6, 5, while the exclusion RP8 pin 5, 6, 7, 8, respectively is also connected SPI-CK, SPI-DI, SPI_CZ, SPI-DO.

该电子产品通过PC机的VGA端子J3 (普通电脑PC插口)的第11脚(根据PC的VGA插头定义,它的第11脚为空,故可将这个引脚作一个使能控制脚) 作为升级工具的使能控制脚。 The electronic product through terminal J3 PC VGA machine (general computer PC socket) of the pin 11 (according to the definition of a PC VGA connector, a first pin 11 which is empty, so that this pin can be enabled for a control pin) as upgrade tools enable control pin.

当FLASH U6芯片不用软件升级时,电子产品在正常使用工作当中,对于该电子产品的FLASH U6芯片来说,是希望芯片FLASH U6的引脚3写保护口置成低电平,这时FLASHU6处于写保护状态,故本实施例中用一个电阻R205 接地,这时对电子产品的FLASH U6的引脚3接地为4氐电平,此时电子产品为正常工作状态,由于是接地,它不会由于上电和掉电而变化,故它是一种稳定状态,不管该电子产品开关机,该引脚都不会有波动,也就避免了由软件I/0口控制写保护时会带来的开关机不定状态的可能(因为电子产品在开机和关机时, 由于电子产品的CPU会有一个上电和掉电的空隙,这时的CPU I/O 口是一种不定状态)„ When FLASH U6 chip without software upgrades, electronic products, in normal use, work which, for the electronic product FLASH U6 chip, it is hoped chip FLASH U6 pin 3 write-protected ports set to low, then in FLASHU6 write protection state, so the embodiment with a resistor R205 to ground the present embodiment, when the FLASH ground pin electronics U6 3 4 Di level, this time for the normal operation of electronic products, because it is grounded, it will not due to power-up and power-down change, so it is a stable state, regardless of whether the electronic switch, the pin is not subject to fluctuations, thus avoiding the software I / 0 port control will bring a write-protected the switch state may be undefined (because the electronic product at startup and shutdown, since the electronic product will have a CPU and power-down the gap, when the CPU I / O port is an undefined state) "

当需要用升级工具对整机做软件升级时,当升级工具插入PC信号的VGA 端子J3时,通过VGA的第11脚给一个5V直流电平,此时电阻R562与R205 分压给FLASH U6 —个高电平,这样FLASH U6就处于可写状态(FLASH U6 的写保护护口第3引脚高电平是可写状态,低电平是写保护状态),当完成升级工作后,将升级工具从PC插座拔掉,FLASH的写保护口又为低电平,这时FLASH U6就处于写保护状态了。 When the machine tools needed to make the upgrade software upgrade, the upgrade when the tool is inserted into the terminal J3 PC VGA signal, VGA by 11 feet to a 5V DC level, this time with a resistor R562 to R205 dividing FLASH U6 - a high, so that FLASH U6 is in write state (write-protected guard port pin 3 is high FLASH U6 writable state, low write-protected state), after the completion of upgrade, the upgrade tool unplug the PC from, FLASH write-protected port and a low level, then FLASH U6 is in a write-protected.

虽然本发明已参照当前的较佳实施方式进行了描述,但本技术领域的普通技术人员应当认识到,上述较佳实施方式仅用来说明本发明,并非用来限定本发明的保护范围,任何在本发明的精神和原则范围之内,所做的任何修饰、等效替换、改进等,均应包含在本发明的权利保护范围之内。 While the invention has been described with reference to the presently preferred embodiment, but those skilled in the art should recognize that the above preferred embodiments are merely to illustrate the present invention and are not intended to limit the scope of the present invention, any within the scope and spirit of the principles of the present invention, made by any modification, equivalents, improvements, etc., should be included within the scope of protection of the invention as claimed.

Claims (4)

1. 一种带FLASH的电子产品的软件升级方法,其特征在于,该方法包括:将电子产品的FLASH芯片的写保护口通过第一电阻接地;当进行FLASH芯片升级时,FLASH芯片的写保护口通过第二电阻接高电压,通过第一电阻和第二电阻的分压给FLASH芯片的写保护口提供一个高电平,使得FLASH芯片处于可写状态。 An electronic product with FLASH software upgrade method, characterized in that, the method comprising: write protection port electronics FLASH chip is grounded through a first resistor; FLASH chip when upgrading, FLASH chip write protection a second port connected to a high voltage through a resistor, to the write protection port provided in a FLASH chip by fractional high first and second resistors of the voltage, so that FLASH chip is writable state.
2. 如权利要求1所述的方法,其特征在于:所述FLASH芯片的写保护口通过第二电阻接高电压具体为:所述FLASH芯片的写保护口通过第二电阻接PC机的VGA端子J3的第11脚。 2. The method according to claim 1, wherein: the write protection port FLASH chip resistor is connected by a second high voltage is specifically: the write protection port VGA FLASH chip through a second resistor is connected to the PC terminal J3 of 11 feet.
3. 如权利要求l所述的方法,其特征在于:所述高电压为5V。 L The method according to claim 2, wherein: the high voltage is 5V.
4. 如权利要求1所述的方法,其特征在于:所述当进行FLASH芯片升级时,将升级工具插入PC的VGA端子J3, FLASH芯片的写保护口通过第二电阻接PC机的VGA端子J3的第ll脚的高电压。 4. The method according to claim 1, wherein: when said chip FLASH upgrade, the upgrade tool inserted into the PC's VGA terminal J3, write-protected by FLASH chip VGA port terminal of the second resistor connected to the PC high voltage pin J3 of the first ll.
CN 200710075118 2007-06-18 2007-06-18 Software updating method for electronic product with FLASH CN100505084C (en)

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TWI451424B (en) * 2009-04-17 2014-09-01 Mstar Semiconductor Inc Protecting circuit and power supply system for flash memory
CN101951434B (en) * 2010-08-31 2015-08-12 上海闻泰电子科技有限公司 One kind of cell phone-time data protection methods
CN106971108A (en) * 2017-03-20 2017-07-21 郑州云海信息技术有限公司 System and method for online updating ROM write protection of BIOS

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US6331950B1 (en) 1999-10-19 2001-12-18 Fujitsu Limited Write protect input implementation for a simultaneous operation flash memory device
CN2513159Y (en) 2001-11-23 2002-09-25 深圳市朗科科技有限公司 Micro flashing storage card with serial bus interface
JP2004185288A (en) 2002-12-03 2004-07-02 Alps Electric Co Ltd Writing method to flash memory
CN201044182Y (en) 2007-06-18 2008-04-02 深圳市兆驰股份有限公司 Electric product with FLASH

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US6331950B1 (en) 1999-10-19 2001-12-18 Fujitsu Limited Write protect input implementation for a simultaneous operation flash memory device
CN2513159Y (en) 2001-11-23 2002-09-25 深圳市朗科科技有限公司 Micro flashing storage card with serial bus interface
JP2004185288A (en) 2002-12-03 2004-07-02 Alps Electric Co Ltd Writing method to flash memory
CN201044182Y (en) 2007-06-18 2008-04-02 深圳市兆驰股份有限公司 Electric product with FLASH

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