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20 мая
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si (02.03.2004 11:15, просмотров: 1) ответил net на скорость выполнения из flash и ram получается одинаковой - даже при разгоне - flash нормально работает
Добавлю :) Well it is not really possible. The flash memory used on the LPC2106 has similar access times as other flash memories on the market. The secret is in the interface to the flash. It is much wider and so one fetch cycle can fetch 128 bit in parallel. For linear code it is really 0 wait states, for non-linear code it is >90 % of the performance running out of flash compared to the speed running out of the large SRAM. The huge benefit compared to other on-chip flash options is the speed out of flash, which is approx. 3x of an external 32-bit wide flash memory. There is no need to copy the program into SRAM for speed!