******************************************************************************
* @file    readme.txt
* @author  MCD Application Team
* @version 3.0
* @date    08-June-2020  
* @brief   STM32MP1 Series DDR memory routing guidelines - layout examples 
******************************************************************************
* COPYRIGHT(c) 2020 STMicroelectronics
*
* The Open Platform License Agreement (“Agreement”) is a binding legal contract
* between you ("You") and STMicroelectronics International N.V. (“ST”), a
* company incorporated under the laws of the Netherlands acting for the purpose
* of this Agreement through its Swiss branch 39, Chemin du Champ des Filles,
* 1228 Plan-les-Ouates, Geneva, Switzerland.
*
* By using the enclosed reference designs, schematics, PC board layouts, and
* documentation, in hardcopy or CAD tool file format (collectively, the
* “Reference Material”), You are agreeing to be bound by the terms and
* conditions of this Agreement. Do not use the Reference Material until You
* have read and agreed to this Agreement terms and conditions. The use of
* the Reference Material automatically implies the acceptance of the Agreement
* terms and conditions.
*
* The complete Open Platform License Agreement can be found on www.st.com/opla.
******************************************************************************

========================
* History
========================

* 1.0 - 12-February-2019
------------------------
    + First official release.
	
========================
* Package content
========================
    + creation of STM32MP15XXAA
	- add track lengths of STM32MP15XXAA
    + creation of STM32MP15XXAB
	- add track lengths of STM32MP15XXAB
	- add schematics, track length file, layout, BOM and gerber of STM32MP15XXAB_1DDR3Lx16
    + creation of STM32MP15XXAC
	- add track lengths of STM32MP15XXAC
    + creation of STM32MP15XXAD
	- add track lengths of STM32MP15XXAD
	- add schematics, track length file, layout, BOM and gerber of STM32MP15XXAD_1DDR3Lx16	

* 2.0 - 23-July-2019
------------------------
    + Second official release.
	
========================
* Package content
========================    
    + STM32MP15XXAC
	- add schematics, track length file, layout, BOM and gerber of STM32MP15XXAC_1DDR3Lx16
	- add schematics, track length file, layout, BOM and gerber of STM32MP15XXAC_2DDR3Lx16
	- add schematics, track length file, layout, BOM and gerber of STM32MP15XXAC_1LPDDR2x32
    + creation of STM32MP15XXAD
	- add schematics, track length file, layout, BOM and gerber of STM32MP15XXAD_LPDDR2x16	


* 3.0 - 08-June-2020
------------------------
    + Third official release.
	
========================
* Package content
========================   
    +STM32MP15XXAA
 - add schematics, track length file, layout, BOM and gerber of STM32MP15XXAA_1DDR3Lx16
    +STM32MP15XXAB
 - updated STM32MP15XXAB_1DDR3Lx16
   PCB ball pad increase from 0.300 to 0.320 mm to align with datasheet. Previous PCB version and new PCB version are in accordance with IPC rules.
    +STM32MP15XXAC
 - add schematics, track length file, layout, BOM and gerber of STM32MP15XXAC_1LPDDR2_POP_x32
 - updated STM32MP15XXAC_2DDR3Lx16
   PCB and excel file are modified in order to have all address length of excel file in the limits. Previous layout example was functional.
 - add schematics, track length file, layout, BOM and gerber of STM32MP15XXAC_1LPDDR3_x32 


Sum up
STM32MP15XXAA_1DDR3Lx16 6 layers without termination

STM32MP15XXAB_1DDR3Lx16 4 layers with termination

STM32MP15XXAC_1DDR3Lx16 4 layers with termination
STM32MP15XXAC_2DDR3Lx16 4 layers with termination
STM32MP15XXAC_1LPDDR2x32 6 layers
STM32MP15XXAC_1LPDDR2_POP_x32 6 layers
STM32MP15XXAC_1LPDDR3_x32 6 layers

STM32MP15XXAD_LPDDR2x16 4 layers
STM32MP15XXAD_1DDR3Lx16 4 layers with termination



  
******************* (C) COPYRIGHT 2020 STMicroelectronics *****END OF FILE
