LPC Microcontrollers中的主题 Control problems for LPC1857 with extern 16-bit SRAM ( Urgent )

Control problems for LPC1857 with extern 16-bit SRAM ( Urgent )

lpcware — Wed, 15 Jun 2016 18:17:58 GMT

Content originally posted in LPCWare by ken-wt on Mon Jun 29 19:45:22 MST 2015
Hi,

I use the Cypress SRAM "CY62167DV30" 1M x16 bit on LPC1857 paltform.
On 16-bit mode is incorrect output , and I try modify hardware to 8-bit mode.
On 8-bit mode is working fine.

I attach the schematic and code.

Would you please tell me how to solve this problem.

Thanks so much.

Original Attachment has been moved to: 16BIT_LPC1857_MEMORY.zip

Original Attachment has been moved to: 8BIT_LPC1857_MEMORY.zip

Re: Control problems for LPC1857 with extern 16-bit SRAM ( Urgent )

lpcware — Wed, 15 Jun 2016 18:17:59 GMT

Content originally posted in LPCWare by bavarian on Fri Jul 10 03:00:51 MST 2015
I don't see major mistake in you configuration, but the buffer needs to be enabled:

LPC_EMC->STATICCONFIG0 |= 1 << 19;

Regards,
NXP Technical Support Team

Re: Control problems for LPC1857 with extern 16-bit SRAM ( Urgent )

lpcware — Wed, 15 Jun 2016 18:18:01 GMT

Content originally posted in LPCWare by ken-wt on Sun Jul 12 18:44:49 MST 2015
Hi bavarian,

Thank you for your comment.

We have to solve the problem.

We try to change the register " STATICWAITOEN0" to zero , then the memory testing is working fine.

Have a nice day.