CN1694175A - Control chip of memory card - Google Patents
Control chip of memory card Download PDFInfo
- Publication number
- CN1694175A CN1694175A CN 200410037098 CN200410037098A CN1694175A CN 1694175 A CN1694175 A CN 1694175A CN 200410037098 CN200410037098 CN 200410037098 CN 200410037098 A CN200410037098 A CN 200410037098A CN 1694175 A CN1694175 A CN 1694175A
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- memory
- control chip
- memory card
- read
- rom
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Abstract
The present invention discloses a control chip of memory card which has flash memory control interface and ROM control interface, the flash memory control interface can be extended with one flash memory at least, in addition, the ROM and the control chip combines with each other as a whole chip which simplifies the manufacture process and reduces cost, and also make the memory card have double function of reading and writing for multiple times or reading only.
Description
Technical field
The present invention relates to a kind of memory card control chip, refer to a kind of memory card control chip that has flash memory control interface and ROM (read-only memory) control interface simultaneously especially.
Background technology
Along with the randomness demand of electronic data transfer increases day by day, memory card and daily life relation are more and more close, the present memory card that generally uses, or claim smart card, digital card, system is the Storage Media of a new generation at present, and it has characteristics such as volume is small and exquisite, storage capacity is high, transmission speed is fast, is applicable to multimedia data storage, transmission especially, as devices such as digital camera, mobile phone, sound equipment, computing machine, personal digital assistants, all can use memory card.And the visible memory card of existing market can be divided into two classes, one is the flash memory that can repeatedly read and write, another kind then is read-only memory card, because different memory cards must be made respectively, thereby can't reduce when making material cost, worker, the user must carry different memory cards simultaneously, also forms the inconvenience of carrying.
Summary of the invention
The object of the present invention is to provide a kind of memory card control chip that has repeatedly read-write capability and read-only function simultaneously.
For achieving the above object, technical solution of the present invention is: a kind of memory card control chip, this control chip have flash memory control interface and ROM (read-only memory) control interface.
This flash memory control interface adds at least one flash memory.
This control chip and the ROM (read-only memory) chip that is combined as a whole.
After adopting such scheme,, therefore memory card is had simultaneously and can repeatedly read and write and read-only dual-use function because the present invention is arranged at flash memory control interface and ROM (read-only memory) control interface on the memory card control chip simultaneously.The chip that ROM (read-only memory) and this control chip can be combined as a whole in addition can be simplified manufacturing process like this, reduce manufacturing cost.
Description of drawings
Fig. 1 is the block schematic diagram of preferred embodiment of the present invention;
Fig. 2 is a control calcspar of the present invention.
Among the figure:
10 control chips, 11 flash memory control interface, 12 ROM (read-only memory) control interfaces
13 ROM (read-only memory), 14 flash memories, 15 memory card interfaces
20 memory card host side
Embodiment
As shown in Figure 1, memory card control chip 10 of the present invention has flash memory control interface 11 and ROM (read-only memory) control interface 12, this flash memory control interface 11 can add at least one flash memory 14, setting by this flash memory control interface 11 and ROM (read-only memory) control interface 12, make memory card have repeatedly read-write and read-only dual-use function, this control chip 10 also has a memory card interface 15 for connecting outside memory card host side 20.
See also shown in Figure 2 again; it is a control calcspar of the present invention; because the size of all memory bodys is variable; so all memory bodys can be divided into main region and secondary regions; this main region system sets at flash memory 14; flash memory 14 is stored into main start sector; if during system start-up; at first can go to read mainly to start shooting the sector; be only the archives economy in two initial zones then; accessing disk normally then, if when wanting to write ROM (read-only memory) 13, then ROM (read-only memory) control interface 12 with setting message is " the write protection mistake " (WriteProtection Error).
Moreover, because ROM (read-only memory) 13 is similar to the making flow process of control chip 10, therefore ROM (read-only memory) 13 is arranged in this control chip 10, be combined into same chips with control chip 10, so, can simplify manufacturing process, reduce manufacturing cost, and in can the ROM (read-only memory) 13 with contents such as operation manual, product introduction burned in the lump control chip 10 when control chip 10 is made, with the paper cost of saving printing description or technical manual, and it is easy to carry, inquiry is easy.
Only the above, it only is preferred embodiment of the present invention, when not limiting the scope of the invention with it, promptly the equalization of doing according to claims of the present invention generally changes and modifies, will not lose main idea of the present invention place, also do not break away from the spirit and scope of the present invention, the former capital should be considered as further enforcement situation of the present invention.
Claims (3)
1, a kind of memory card control chip is characterized in that: this control chip has flash memory control interface and ROM (read-only memory) control interface.
2, memory card control chip as claimed in claim 1, it is characterized in that: this flash memory control interface adds at least one flash memory.
3, memory card control chip as claimed in claim 1 is characterized in that: this control chip and the ROM (read-only memory) chip that is combined as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410037098 CN1694175A (en) | 2004-04-30 | 2004-06-02 | Control chip of memory card |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420058912 | 2004-04-30 | ||
| CN200420058912.6 | 2004-04-30 | ||
| CN 200410037098 CN1694175A (en) | 2004-04-30 | 2004-06-02 | Control chip of memory card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1694175A true CN1694175A (en) | 2005-11-09 |
Family
ID=35353104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410037098 Pending CN1694175A (en) | 2004-04-30 | 2004-06-02 | Control chip of memory card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1694175A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014032437A1 (en) * | 2012-08-28 | 2014-03-06 | 深圳市江波龙电子有限公司 | Storage control chip, and storage device and system data writing method therefor |
-
2004
- 2004-06-02 CN CN 200410037098 patent/CN1694175A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014032437A1 (en) * | 2012-08-28 | 2014-03-06 | 深圳市江波龙电子有限公司 | Storage control chip, and storage device and system data writing method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |