On Fri, Dec 16, 2011 at 2:17 PM, Øyvind Harboe <oyvind.har...@zylin.com>wrote:
> On Fri, Dec 16, 2011 at 1:53 PM, Erik Ahlén > <erik.ah...@avaloninnovation.com> wrote: > > Am I doing something wrong or is NAND flashing always slow? > > I'm using a Amontec JTAGkey-2 to flash a boot loader on an i.MX35. The > > erasing takes ~21s and the writing takes ~35s. Erasing 0x0-0x300000 and > the > > boot loader is 130K. > > What's the maximum theoretical performance according to the datasheets? > > > > > -- > Øyvind Harboe - Can Zylin Consulting help on your project? > US toll free 1-866-980-3434 > http://www.zylin.com/ > Block Erase Time according to the data sheet for the flash memory is 1.5-2ms and for 24 (0x300000/0x20000) blocks that makes max 48ms. And page program time is 200-700 us, 64 * 700us = 44800us for a block. And Amontec specifies that the baudrate for JTAGkey is 6Mbits/s
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