device_id of LPC11U34FBD48/311 is different from UM 10462(v5.5)

[helm]

Hello.

LPC11U34FBD48/311's device_id in UM10462(v5.5) is 0x003 D440.

But my devices return 0x2000 002B.

(The address is 0x4004 83F4)

Is it right device_id ?

Or is the address wrong ?

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I've gotten right device_ids in some other LPC11Ux.

example)

0x2980 002B for LPC11U24FBD48/301  ( same as one in UM10462)

0x2980 102B for LPC11E14FBD48/401 ( same as one in UM10518)

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Thanks.

[Alice_Yang]

Hello helm,

How about enter enter ISP mode using Flash Magic to read?

Or use IAP "Read Part Identification number" in your code to read?

BR

Alice

[helm]

Thanks for your reply, Alice Yang.

I tried ISP and IAP.

I got the right device_id(0x003 D440) with the ISP mode command "J" and the right one with IAP command 54.

Thank you.

However, the right address of device_id is 0x4004 83F8 not 0x4004 83F4.

actual data::

0x400483f4: 2b 00 00 20 40 d4 03 00

Is the address changeable depending on product's Lot in LPC11Uxx ?

Regards,

Helm

[Alice_Yang · Accepted solution]

Hello helm,

Sorry I also don't know the really reason, while you can see in the " Table 48. Device ID register (DEVICE_ID, address 0x4004 83F4) bit description", there is no LPC11u3x. 

Anyway, recommend use IAP/ISP command read.

Thanks,

Alice

[helm]

Certainly there is no LPC11U3x in Table 48 as you say.

It's a little bit difficult notation because of the description;

"This device ID register is a read-only register and contains the part ID for each LPC11U3x/2x/1x part."

in 3.5.42 of UM10462.

Anyway, I will use ISP/IAP for detecting DEVICE_ID.

Thanks !

I attach a link I found today for other's reference.

https://community.nxp.com/t5/LPC-Microcontrollers/LPC11U68JBD100-Device-ID/m-p/537085 

Regards,

Helm