meaning of "S" in name of the product/family

[akaradag]

Hi NXP support,

I strongly wonder the meaning of "S" in name format.

When I look at the LPC550x/S0x docs, it means that "secure boot supported device or secure device"

When I look at the block diagram of LPC553x/S3x, I see secure boot feature.

Could you please assist me to understand effect of "S" and confirm the situation below

LPC553x -> non-secure device, there is no secure boot feature support

LPC55S3x -> secure device, there is a secure boot feature support

[xiangjun_rong]

Hi,

Obviously, the "S" means security, for the LPC55xx with "S", it has the hardware security modules such as AES, Hash,PUF(it can save key for AES or...) and PRINCE which can encrypt code in flash and it can dicrypt  code in real time when the chip is running, even some lpc with "S" has hardware module to generate key with RSA or ECC.

But the LPC MCU without "S" doe not have the security modules such as AES, Hash, PUF..., but it can do the AES, hash with core.

The LPC553x without "S" does not have the AES, HASH, PUF...hardware  modules, it does not support secure boot operation either.

Hope it can help you

BR

XiangJun Rong