TMS570LS3137: TMS570LS3137

Ahmed Sabry1

Intellectual 430 points

Part Number: TMS570LS3137

Kindly can you provide me with the Erase speed of internal flash memory in MB/S or in Mb/S for TMS570LS3137?

I appreciate your fast response.

Thanks

Ahmed Sabry

over 3 years ago

0 Chester Gillon over 3 years ago

Guru 92251 points

The following sections in the TMS570LS3137 datasheet provide the nominal and maximum Sector/Bank erase times:

6.10.5 Flash Program and Erase Timings for Program Flash
6.10.6 Flash Program and Erase Timings for Data Flash

Using the times for each sector/bank and the sizes, you should be able to calculate the erase speed.

0 Ahmed Sabry1 over 3 years ago in reply to Chester Gillon

Intellectual 430 points

Thank you for your reply.

But just need to confirm results

by following 6.10.5 for program flash Erase Speed will be 144bit for TMS570LS3137-ZWT will be 3072KB/4s= 768KB/s

and for data flash 6.10.6 Erase Speed will be 64KB/8s =8KB

This will be ok?

Appreciate your confirmation

0 Chester Gillon over 3 years ago in reply to Ahmed Sabry1

Guru 92251 points

Ahmed Sabry1 said:
But just need to confirm results

Are you interested in the speed of erasing the entire flash, or a sector at a time?

Erasing all sectors in one bank takes the same time as erasing just one sector.

Ahmed Sabry1 said:
by following 6.10.5 for program flash Erase Speed will be 144bit for TMS570LS3137-ZWT will be 3072KB/4s= 768KB/s

The program flash contains two banks each of size 1.5MB, where the number and size of sectors differs between BANK0 and BANK1.

Figure 3. Recommended Bank Erase Flow in the F021 Flash API Version Reference Guide shows that the erase of one bank must complete before can start to erase the other bank.

Therefore, to erase both banks of the program flash the worst case erase speed would be 3072KB/(4+4)s = 384KB/s.

0 Ahmed Sabry1 over 3 years ago in reply to Chester Gillon

Intellectual 430 points

Thank you for your support, but How can I calculate the read speed?

Appreciate your help.

0 QJ Wang over 3 years ago in reply to Ahmed Sabry1

TI__Guru**** 186286 points

The TCM flash support zero address and data wait states upto a CPU speed of 50MHz in nonpipelined mode. The flash supports a maximum CPU clock speed of 180 MHz with one address wait state and three data wait states.

0 Ahmed Sabry1 over 3 years ago in reply to QJ Wang

Intellectual 430 points

Thank you for your reply, But I still need more clarification on how to calculate the read speed of the flash memory.

0 QJ Wang over 3 years ago in reply to Ahmed Sabry1

TI__Guru**** 186286 points

Hello Ahmed,

It depends on how to read the memory. I did a test, it takes around 100 cycles to read 40 32-bit words from the flash using LDM instruction. The CPU clock is 160MHz, and data wait state is 3, address wait state is 1.

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TMS570LS3137: TMS570LS3137