topic Re: Memory density in i.MX Processors

Memory density

riteshpatel — Thu, 12 May 2016 05:44:38 GMT

Hi,

I am using iMX6UL in my custom board. Right now i am using 512MB DDR3L DRAM and 1GB NAND Flash.

I want to know maximum density supported for DRAM and Flash memory.

I got max density is 1GB for DDR3/3L from Table 34-1 in iMX6UL Ref Manual, Rev 0. & 2GB for LPDDR2 as there are two chip selects for LPDDR2. Please correct me if I am wrong.

I didn't found max density support for NAND and eMMC memories. Please let me know the density and reference in ref manual.

Seeking for your earliest response.

Regards,

Ritesh.

Re: Memory density

Yuri — Thu, 12 May 2016 06:58:26 GMT

Hello,

Maximum DRAM memory size is 2GB. Please refer to Table 2-1 (System memory map)

of the i.MX6 UL Reference Manual.

As for NAND - there are no i.MX6 hardware / specified restrictions on supported size.

Have a great day,
Yuri

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Re: Memory density

riteshpatel — Thu, 12 May 2016 08:58:08 GMT

As per Table 2-1 Max DRAM size is 2GB. That is for LPDDR2 memory.

For DDR3/3L, As per table # Table 34-1 on Page # 2049 of iMX6UL Ref manual, Max density per DDR device is 1GB, and out of Two chip selects there is only one Chip select for DDR3/3L.

That means we can interface max 1GB DDR3/3L DRAM memory. Please confirm.

Re: Memory density

Yuri — Fri, 13 May 2016 03:38:09 GMT

Hello,

The i.MX 6UltraLite supports single Chip Select DDR3 memory with CS0_B, ODT0, and SDCKE0.

data bus width = 16 bit ;

Column size = (up) 12 bits ;

Row size = 16 bits ;

banks = 3 bits.

Such parameters allow to address all available 2GB area.

Regards,

Yuri.