FLASH and EEPROM - Electronic Circuits Projects Diagrams Free

bogdanfirst · 21st March 2003, 05:25 PM

for a PIC16F84 i see that it has a Flash and an EEPROM memory. what is each used for?
the Flash sais that it is 1000 erasable and the EEPROM is 10000000 times erasable....

**kinjalgp** · 21st March 2003, 06:14 PM

Flash memory is used for Program Memory of the microcontroller where as EEPROM is used for non-volatile data storage.
Flash memory cells are cheaper to construct than EEPROM cells. I think this is the reason why they give FLASH for Program memory and EEPROM fro data storage.

bogdanfirst · 21st March 2003, 06:32 PM

so in conclusion the FLASH is where the program is stored and the EEPROM is where the data that is used when the program is running is sotred?

**kinjalgp** · 21st March 2003, 06:40 PM

No not necessary. Onle recent uCs come with this configuration. But if you want you can also interface an external EEPROM as program memory for uC like 8051 and even a FLASH ROM as data storage memory. So both ways it is possible.

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21st March 2003, 05:25 PM	(permalink)
bogdanfirst	FLASH and EEPROM for a PIC16F84 i see that it has a Flash and an EEPROM memory. what is each used for? the Flash sais that it is 1000 erasable and the EEPROM is 10000000 times erasable....

21st March 2003, 06:14 PM	(permalink)
kinjalgp	Flash memory is used for Program Memory of the microcontroller where as EEPROM is used for non-volatile data storage. Flash memory cells are cheaper to construct than EEPROM cells. I think this is the reason why they give FLASH for Program memory and EEPROM fro data storage. __________________ "There is no way to peace, peace is the way!"

21st March 2003, 06:32 PM	(permalink)
bogdanfirst	so in conclusion the FLASH is where the program is stored and the EEPROM is where the data that is used when the program is running is sotred?

21st March 2003, 06:40 PM	(permalink)
kinjalgp	No not necessary. Onle recent uCs come with this configuration. But if you want you can also interface an external EEPROM as program memory for uC like 8051 and even a FLASH ROM as data storage memory. So both ways it is possible. __________________ "There is no way to peace, peace is the way!"