NRF51系列参考手册，内容详尽，十分适合学习该系列芯片

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nRF51 Series Reference Manual Version 21 The nRF51 series offers a range of ultralow power System on Chip solutions for your 24 GHz wireless products With the nRF51 series you have a diverse selection of devices including those with embedded Bluetooth low energy andor ANTTM protocol stacks as well as open devices enabling you to develop your own proprietary wireless stack and ecosystem The nRF51 series combines Nordic Semiconductors leading 24 GHz transceiver technology with a powerful but......