SUMMARY DESCRIPTION. These electrically erasable programmable memo- ry (EEPROM) devices are accessed through a Se- rial Data. 93C46 are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for 93C 93C46 datasheet, 93C46 pdf, 93C46 data sheet, datasheet, data sheet, pdf, Microchip, 1K V Microwire Serial EEPROM.
|Published (Last):||24 June 2009|
|PDF File Size:||9.6 Mb|
|ePub File Size:||7.49 Mb|
|Price:||Free* [*Free Regsitration Required]|
It can be used without much difficulty with a datahseet, by avoiding calls to the routines that manipulate the extended features of the 93CS It is advisable to disable writing if no additional write operations are expected soon.
If you do use it, I hope that you’ll give me some feedback.
The routines available for your code datasjeet Early versions of this code worked with the 93C56 and 93C57, which have more memory. This 3-Wire interface chip actually has 6 wires.
Of course, WEN must still be called before writing. Both the and ER use the 93C46 serial. There are lots of other distributors too, but Mouser and DigiKey are probably the easiest, since they give out a free catalog What this family code does This code was written to support the 93CS Valid address range for R0 is 0 to It applies to both the 93C46 and 93CS46 chips. Atmel can also accept a number of other design formats with varying degrees of effort required for each.
To reclaim these pins, remove all the instructions that use ” pe ” and ” pre ” symbols. Flasher with Trailer Control Atmelswitches to frequency doubling, just like the standard flashers e. All protected memory locations will forever be unwritable, but the locations not protected will remain subject to WEN and WDS. PREN should only enable use of the protection register for the next access, so it should be called before every protection register access.
Two versions of the code are available, one with a little menu driven user interface via a terminal connected to the UART and the other with only the routines to include in your existing program. Atmel Corporation makes nowarranty which is detailed in Atmel ‘s Terms and Conditions located on the Company’s web site.
Description The bipolar integrated Atmeltrailer hook 93f46 equipped with additional pilot lamps in the dashboard. Details of each macro can be found on the Atmel web site, at http: The user interface is simple and shouldn’t need documentation.
The code is basically designed to manipulate a single 93CS46 chip, connected to six of the port pins. It’s up to you.
(PDF) 93C46 Datasheet download
Previous 1 2 As mentioned above, four wires are actually required, and the 93CS46 has two additional lines that work together with a special datasheet protection register. To you, the system designer, these little chips offer a nifty way to store a small amount of data in non-volatile memory, using only a few of the port pins, and without raising the system’s cost much.
As the pressure on engineers to make products smaller has grown, semiconductor manufacturers have introduced several new interfaces, usually aimed at lower a product’s size and cost Please consult the relevant Atmel datasheet. Xicor once had a considerable collection of example code on-line, but they appear to have removed it. The device is manufactured ng Atmel ‘s high density daasheet memory technology. Outputslbit12 0.
In addition, WEN may have to have been dafasheet, check your data sheet or just do it to be on the safe side. Their literature number is I might make another version of the code specifically for the plain 93C46, if anyone wants it enough to let me know.
93C46 Datasheet pdf – 1K V Microwire Serial EEPROM – Microchip
This operation must be performed before a write may be issued. The erase functions provided in the 93C46 are unnecessary for the chips I’ve used, double check your data sheet. As a practical matter, the code offered below only works with the Microwire 3 Wire interface, and is specifically intended to work with the 93C46, which is a standard part available from a variety of distributors.
Unprotected memory locations are still subject to WEN and WDSbut protected locations are unwritable unless the datadheet register is changed or cleared. In this state, the chip may have better resistance to accidental data loss due to problems on the power supply, noise on signal lines, etc.
AT93CPC IC SEEPROM 1K 8DIP Atmel datasheet pdf data sheet FREE from
You may use it within commercial for-profit products, without concern of licensing restrictions, copyright, royalties, etc. I used their 93CS46 data sheet to write the code. The erase functions are not implemented here. It can never be modified again after this operation. They only require a 5 volt power supply some 3V only versions exist too.
Writing must have been enabled using WEN. PRDS Permenantly freeze the protection register to its current value. This disables write operations. They offer quite a few different types of serial eeproms, including of course the 93CS46 and 93C Atmel ATA is off i.
There is no way to undo this operation The two extra pins not required for the 93C46 are manipulated by all the routines.