AnsweredAssumed Answered

i.MX6ULL RAM Selection

Question asked by Mahmoud Tolba on Oct 11, 2018
Latest reply on Oct 12, 2018 by igorpadykov



I am working on a new project with i.MX6ULL and I need to choose a suitable RAM.


I don't have a previous experience with processor board design.

In my design I need a 512MB RAM.


I was searching for a reference so I checked the evaluation kit provided by NXP MCIMX6ULL-EVK, and I found that they used this chip MT41K256M16TW-107:P

I checked its specs and I found that:

Memory Format : DRAM
Memory Technology : DDR3L
Memory Size : 4Gb (256M x 16)
Clock Frequency : 933MHz
Access Time : 20ns
Voltage Supply : 1.283 V ~ 1.45 V

Then, I checked the datasheet of the i.MX6ULL and I found that it supports these type of external memory (16-bit LP-DDR2-800, 16-bit DDR3-800 and DDR3L-800)

Is 800 represents the clock frequency of the RAM? if yes, why they used a 933MHz RAM in the evaluation kit?


I searched Digikey for a suitable RAM for my project (according to my understanding) and I found this one AS4C32M16D3-12BIN and I want to make sure that I didn't miss any details.


My RAM specs are : 
Memory Format : DRAM
Memory Technology : DDR3
Memory Size : 512MB (32M x 16)
Memory Interface : Parallel
Clock Frequency : 800MHz
Access Time : 20ns
Voltage Supply : 1.425 V ~ 1.575 V
Operating Temperature : -40°C ~ 95°C 

Waiting for your valuable comments


Many thanks in advance and have a nice day ahead.

Best regards,