LPC8N04 EEPROM writing

Caroline22 — Thu, 03 Feb 2022 16:17:32 GMT

Hello,

I have questions about LPC8N04 EEPROM, SWD connection:

- how to start writing to EEPROM? (I can't write to CMD - 0x4003 4000 - in user manual: "When writing the binary value 110b inside the CMD register field, programming starts: " - is there more info? should I set something else before CMD? - I tried to set CMD with powered and powered down EEPROM - same effect)

- is there any description of STATUS register (address 0x4003 4034)? - for example: reset value for HVTRIM_E is not 0 (after powred EEPROM - also is not 0) - I read registers about EEPROM power settings - there are values as it should be in EEPROM powered case

- CLKDIV1 (0x4003 4054) and CLKDIV2(0x4003 4058) with read access - can't be read

- what values should be set in Wait state registers (WSTATE, WSTATE) (address 0x4003 4008)(address 0x4003 4010) - can i find more details?

Re: LPC8N04 EEPROM writing

xiangjun_rong — Mon, 07 Feb 2022 06:20:14 GMT

Hi,

There is EEPROM example in SDK package for LPC8N04, pls refer to it.

You can download SDK from the link:

https://www.nxp.com/design/software/development-software/mcuxpresso-software-and-tools-/mcuxpresso-software-development-kit-sdk:MCUXpresso-SDK

Hope it can help you

XiangJun Rong

Re: LPC8N04 EEPROM writing

Caroline22 — Fri, 25 Feb 2022 10:07:57 GMT

Thank you!

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LPC8N04 EEPROM writing

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Re: LPC8N04 EEPROM writing