Olimex Support Forum

ARM => NXP => Topic started by: z.f.k on December 08, 2013, 08:12:06 AM

Title: mmc schematic for lpc1788
Post by: z.f.k on December 08, 2013, 08:12:06 AM
Hi.I need the schematic connect mmc to lpc1788.help me plaese.. :( :( :( :( :(
Title: Re: mmc schematic for lpc1788
Post by: LubOlimex on December 09, 2013, 04:34:30 PM
Hello z.f.k,

You can use this schematic as a helpful reference: https://www.olimex.com/Products/Modules/LCD/MOD-LCD4.3''/resources/MOD-LCD4.3_Rev_A.pdf (https://www.olimex.com/Products/Modules/LCD/MOD-LCD4.3''/resources/MOD-LCD4.3_Rev_A.pdf).

Best regards,
Lub/OLIMEX
Title: Re: mmc schematic for lpc1788
Post by: z.f.k on December 10, 2013, 08:22:46 AM
Thank you for having responded to my question did you give. :) :)
Title: Re: mmc schematic for lpc1788
Post by: z.f.k on January 12, 2014, 07:25:18 AM
In this schematic link's you've put some values are unknown.for example R15,R8,R6 .the exact amount of lead resistance harrow say?
Title: Re: mmc schematic for lpc1788
Post by: LubOlimex on January 15, 2014, 04:59:11 PM
Hey,

R8 is 33k.

R6 and R8 are not placed because they are optional. R6 might be put if you want to skip transistor T2. R8 might be put if you want extra protection on the T2 during powering events (it should probably be 510k or more).

Resistors which have value "NA" are not placed on the board by default. "NA" stands for "Not Assembled".

Please refer to this forum thread on why some resistors are NA and why we place resistors 0(zero) Ohms: https://www.olimex.com/forum/index.php?topic=2375.0 (https://www.olimex.com/forum/index.php?topic=2375.0)

Best regards,
Lub/OLIMEX