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Cortex-M3 Introduction and Specific SAM3U Implementation Slide 14
There are three different Flash sizes available on the different versions, ranging from 256 kB to 64 kB. The 256 kB version is in fact a dual plane Flash, with 2x128 kB Flash seen as contiguous by the core. Single cycle access is possible at up to 24 MHz in worst case. Several buffers are also embedded for code and data read optimizations which allow to fetch sequential code at zero wait state, even at full speed 96 MHz. There is a unique 128-bit factory programmed ID for each device. The automatic sleep mode feature is enabled when Flash is accessed at low speed and ensures that power consumption is reduced.
PTM Published on: 2011-12-27