topic Re: Use of AHBSRAM in LPC1768 in LPC Microcontrollers

Use of AHBSRAM in LPC1768

ashokrabadiya — Mon, 17 Jun 2019 12:10:54 GMT

I'm working on a LPC17688.

I want to use the AHB SRAM (32 KB at 0x2000 0000, 16 KB at 0x2000 8000 and 16 KB at 0x2000 C000) to store program.

Question 1 : what are the differences between local SRAM and AHB SRAM? The AHB SRAM access time is the same as for local SRAM?

Question 2 : I want to use it to store program (no data). These areas are contiguous, aren't they ? So I just have to define one area in my scatter file (from 0x2000 0000 to 0x2000 C000) and not 3 differents ?

Re: Use of AHBSRAM in LPC1768

FelipeGarcia — Wed, 19 Jun 2019 22:51:26 GMT

Hi Ashok,

SRAM is interfaced with the Advanced High-performance bus (AHB). This in order to reach high speed transfers and optimize performance. Please check below the MCU diagram and Memory map for the MCU you are working on.

I hope this helps you.

Best regards,

Felipe