topic Re: About MC9S08PA4 EEPROM Sample Code in 8-bit Microcontrollers

About MC9S08PA4 EEPROM Sample Code

JasonWood — Mon, 13 Dec 2021 07:31:03 GMT

Hello,

I'm Jason.I have got a project using MC9S08PA4.It needs to store some AD value for using to compare.But I have never use this MCU before.

Pls send me a EEPORM sample code of Writing\Reading and Erasing Data .Thank you.

My Email is : jiangxc@jwpow.com

Best

Regards!

Re: About MC9S08PA4 EEPROM Sample Code

vicentegomez — Mon, 13 Dec 2021 15:47:29 GMT

Please check the following application note

I hope this will help you

https://www.nxp.com/docs/en/application-note/AN4570.pdf

Also check the labs here there is a sample that read-write on the eeprom

https://www.nxp.com/docs/en/supporting-information/TWR-S08PT60-LABS.zip

and

https://www.nxp.com/docs/en/supporting-information/TWRS08PT60LAB.pdf

Regards

Vicente Gomez

Re: About MC9S08PA4 EEPROM Sample Code

JasonWood — Tue, 14 Dec 2021 06:24:52 GMT

HELLO,

I'm so glad to receive ur reply.

I have tried to use code to my project.But it seems work unsuccessfully.

I write the datas to EEPROM ,but read its data is still OXFF.

The codes U gave contain many fuctions.

Please tell which one I can use to erase and write.

Now I use fuctions as blow.

And I also read the MC9S08PA4 datasheet ,it tells me that EEPROM memory address is from 0X3100 to 0X31FF.So I called the functions like this ,Is that right? Glad to your retry ,Thank U!

Best

Regard!

Re: About MC9S08PA4 EEPROM Sample Code

JasonWood — Tue, 14 Dec 2021 08:32:01 GMT

By the way ,

Does this function code need adding to the MCU Init?