CN2409552Y - Palmtop computer dictionary using serial port flash memory card - Google Patents
Palmtop computer dictionary using serial port flash memory card Download PDFInfo
- Publication number
- CN2409552Y CN2409552Y CN 00203215 CN00203215U CN2409552Y CN 2409552 Y CN2409552 Y CN 2409552Y CN 00203215 CN00203215 CN 00203215 CN 00203215 U CN00203215 U CN 00203215U CN 2409552 Y CN2409552 Y CN 2409552Y
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- mouth
- flash memory
- memory card
- palmtop computer
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Abstract
The utility model provides a serial flash-memory card palmtop computer dictionary, in order to solve the problems of the existing card palmtop computer dictionary, such as large volume, high price, etc. The utility model combines a serial flash memory card with a palmtop computer dictionary product, controls signal lines of the serial flash memory card via an MCU and I/O port lines, and finishes operations of reading, writing, erasing, etc. by the MCU to the flash memory card via software. The utility model also expands program zones via increasing parallel flash memories. The utility model has the advantages of low cost, small size, simple structure and easy realization, and can update the software, expand and backup records, expand information contents, increase software application and increase scores of professional dictionaries.
Description
The utility model relates to the electronics and IT products field.The palmtop computer dictionary is a kind of personal digital assistant, has functions such as dictionary, account, data, recreation.Flash memory (Flash Memory) is a kind of electronic memory, erasablely removes, electronically written, and content is not lost in power down.
Existing no card insert type palmtop computer dictionary product is owing to lack expansion and upgrading means, can't the expansion of realization data, software application expansion, account backup, software upgrading etc.And existing card insert type palmtop computer dictionary product is selected for use is parallel port flash card or ROM card, and these two kinds of plug-in cards cost an arm and a leg, and volume is big, are not easy to carry; Line is more than 30, and complicated in mechanical structure realizes difficulty.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art, the employing capacity is big, volume is little (shape size as SIM cards of mobile phones), low-cost serial flash memory card combines with palmtop computer dictionary product, but and provides that a kind of function is strong, volume is little, line is few, the palmtop computer dictionary of the slotting serial flash memory card in the simple extender of physical construction district.
The purpose of this utility model can reach by following measures.AT45D041 (AT45DB041) that Atmel company is produced or AT45DO21 (AT45DB021) type serial flash memory card and palmtop computer dictionary product combine, by the I/O mouth line traffic control serial flash memory card signal line of MCU in the palmtop computer dictionary product, finish the operations such as reading, write, wipe of MCU to the serial flash memory card by software (operation I/O mouth line is observed certain protocol such as SPI etc.); Original palmtop computer dictionary product is increased the parallel port flash memory, with the program in the MCU control download serial flash memory card, to reach the purpose of extender or software upgrading.
The utility model description of drawings is as follows:
Fig. 1 connects general diagram for the utility model.
Fig. 2 is the connection layout of the utility model serial flash memory card, parallel port flash memory and palmtop computer dictionary part.
Fig. 3 saves the connection layout of RESET and two mouth lines of RDY/BUSY for the utility model serial flash memory card.
Fig. 4 is connected on the connection layout of a two-way I/O mouth for the utility model serial flash memory card SI and two signal wires of SOUT.
Fig. 5 is circuit theory diagrams of the present utility model.
The utility model is described further below in conjunction with accompanying drawing.
As Fig. 1, the utility model comprises MCU (1), ROM (2), RAM (3), LCD (4) (LCD), input keyboard (5), serial flash memory card (6), parallel port flash memory parts such as (7), the MCU (1) of palmtop computer dictionary part links to each other with serial flash memory card (6) by I/O mouth line (8).As Fig. 2, GND, the VCC of MCU (1) end is connected with GND, the VCC end of serial flash memory card (6) respectively, and is controlled six signal wires of serial flash memory card (6) respectively by six I/O mouth lines of MCU (1).Its connected mode is: I/O mouth (8.1) connects the RESET end of serial flash memory card (6), I/O mouth (8.2) connects the RDY/BUSY end, and I/O mouth (8.3) connects the SI end, and I/O mouth (8.4) connects the SOUT end, I/O mouth (8.5) connects the CS end, and I/O mouth (8.6) connects the SCK end.As Fig. 3, according to MCU (1) resource, available I/O mouth (8.3) connects the SI end, and I/O mouth (8.4) connects the SOUT end, and I/O mouth (8.5) connects the CS end, and I/O mouth (8.6) connects the SCK end, and two mouth lines of RESET and RDY/BUSY are realized card reading status with software.As Fig. 4, according to MCU (1) resource, two signal wires of SI and SOUT can be connected on the two-way I/O mouth.As Fig. 2, the MCU in the palmtop computer dictionary (1) links to each other by data line (9), address wire (10), control signal wire (11) with parallel port flash memory (7).In the electrical schematic diagram shown in Figure 5, U1 is MCU (1), and U2 is ROM (2), and U3 is RAM (3), U4 is LCD (LCD) (4), KEY MATRIX is input keyboard (5), and U6 is serial flash memory card (6), and U7 is parallel port flash memory (7), I/O8.1---I/O8.6 is I/O mouth (8), D0---D7 is data line (9), and A00---A21 is address wire (10) ,/RD ,/WR ,/CS3 is control signal wire (11).
The utility model has been compared following advantage with existing card insert type palmtop computer dictionary:
1. cheap;
2. volume ultra-thin extra small (shape size as SIM cards of mobile phones);
3. serial flash memory deck physical construction is simple, and line is no more than 8, is easy to realize.
Claims (6)
1, a kind of palmtop computer dictionary, comprise MCU (1), ROM (2), RAM (3), LCD (LCD) (4), input keyboard (5), it is characterized in that also comprising serial flash memory card (6), parallel port flash memory parts such as (7), described MCU (1) links to each other with serial flash memory card (6) by I/O mouth line (8).
2, palmtop computer dictionary according to claim 1 is characterized in that GND, the VCC of MCU (1) is connected with GND, the VCC of serial flash memory card respectively, and is controlled six signal wires of serial flash memory card by six I/O mouth lines of MCU respectively.Its connected mode is: I/O mouth (8.1) connects the RESET end of serial flash memory card, and I/O mouth (8.2) connects the RDY/BUSY end, and I/O mouth (8.3) connects the SI end, and I/O mouth (8.4) connects the SOUT end, and I/O mouth (8.5) connects the CS end, and I/O mouth (8.6) connects the SCK end.
3, palmtop computer dictionary according to claim 1, it is characterized in that resource according to MCU (1), I/O mouth (8.3) connects the SI end, I/O mouth (8.4) connects the SOUT end, I/O mouth (8.5) connects the CS end, I/O mouth (8.6) connects the SCK end, and two mouth lines of RESET and RDY/BUSY are realized card reading status with software.
4, according to claim 2,3 described palmtop computer dictionaries, it is characterized in that resource according to MCU (1), two signal wires of SI and SOUT can be connected on the two-way I/O mouth (8.3).
5, palmtop computer dictionary according to claim 1 is characterized in that the serial flash memory card adopts the AT45D041 (AT45DB041) or the AT45D021 (AT45DB021) of Atmel company.
6, palmtop computer dictionary according to claim 1, MCU wherein (1) links to each other by data line (9), address wire (10), control signal wire (11) with parallel port flash memory (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00203215 CN2409552Y (en) | 2000-01-28 | 2000-01-28 | Palmtop computer dictionary using serial port flash memory card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00203215 CN2409552Y (en) | 2000-01-28 | 2000-01-28 | Palmtop computer dictionary using serial port flash memory card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2409552Y true CN2409552Y (en) | 2000-12-06 |
Family
ID=33571956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00203215 Expired - Fee Related CN2409552Y (en) | 2000-01-28 | 2000-01-28 | Palmtop computer dictionary using serial port flash memory card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2409552Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950277A (en) * | 2010-09-13 | 2011-01-19 | 青岛海信信芯科技有限公司 | Data transmission method and device for micro control unit and data transmission system |
-
2000
- 2000-01-28 CN CN 00203215 patent/CN2409552Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950277A (en) * | 2010-09-13 | 2011-01-19 | 青岛海信信芯科技有限公司 | Data transmission method and device for micro control unit and data transmission system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |