Does STM32MP153 and STM32MP157 support ECC for RAM interface ( DDR3)?

[PatrickF]

Hi @ABala.7​ 

There is no support of DDR ECC on STM32MP1 products.

Regards,

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[Alex - APMemory · Accepted solution]

Hi, 

I'd like to comment about ECC DDR3. This device can be used with standard SoC. 

Please see below example based on Zentel Japan PN A3T4GF40CBF, 4Gb Built-in ECC DDR3/DDR3L SDRAM:

The ECC is a built-in function, the product has the features listed below

• /DED (Double bit Error Detection) pin sends a fault detection signal to notify SoC of memory data error
• Compatible with conventional JEDEC standard DRAM;
• /DED pin is connected or unconnected does not affect ECC function;
• /DED pin state or level does not affect ECC function
• Note : Use Burst Chop and Data Mask may restrict the ECC functionality

Note:

• /DED pin should be terminated at the VTTD and will be output low level when DED occurs.
• If you do not use the DED notification, please fix /DED to VSS or OPEN.

Alex