[b]Atmel Software Framework[/b]升级到3.21了。更新如下：Release ASF3.21 (Dec 2014)• SAM L21 device family and SAML21-XPRO support : added drivers support for Clock ,AES, CCL, OPAMP,TRNG, RWW, HSDAC, AC, AD
[size=3]这次ST发布的双核处理器主频可以达到650MHZ，由32-bit ARM Cortex-A7 和/ Cortex-M3 组成，主要向汽车级的音视频处理，数字仪表，导航等市场；[/size][size=3]芯片功能如下：[/size]Media Interfaces[list][*] ARM Dual Core CortexA7 up to 650MHz, with NEON ins
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