Tamper detection function in iMX6ULL

[jelenas]

I would like to enable the active tamper detection feature on the i.MX6ULL processor in order to detect when the device enclosure is opened.

A switch has been added to the hardware and connected to the external tamper pins, as shown in the attached figure.

Do you have any examples or documentation on how to support tamper detection on the software side? Is there an example implementation or a sample function that demonstrates how to configure and handle this feature?

[JorgeCas · Accepted solution]

Hello,

The tamper feature on i.MX 6ULL is controlled by a Fuse which is currently provisioned by NXP to disable this feature on all production part numbers for i.MX6ULL.

Several customer-facing documents incorrectly state that i.MX 6ULL supports external tamper. Since the fuse is programmed to disable this feature on all i.MX 6ULL part numbers, a customer will not be able to use the tamper feature even though the tamper pins are documented in the current documentation.

Documentation will be updated to reflect that tamper is not Supported.

Please also note that the derivative product i.MX 6ULZ also does not support Tamper

Feature

i.MX 6UL -3

i.MX 6ULL/6ULZ

Comments

Tamper Detection Signal	Yes	No	Active Tamper only on i.MX 6UL
Volt/Temp/Freq Detect (DRY-ICE)	Yes	No	DRY-ICE & Active Tamper features not supported on i.MX 6ULL/ULZ

Best regards.