Nordic Semiconductor nRF51822_xxAA

The Nordic Semiconductor nRF51822_xxAA is a The nRF51822_xxAA is a powerful, highly flexible multi-protocol SoC ideally suited for Bluetooth® low energy and 2.4GHz ultra low-power wireless applications. The nRF51822_xxAA is built around a 32-bit ARM® Cortex™ M0 CPU with 256kB flash + 16kB RAM. The embedded 2.4GHz transceiver supports Bluetooth low energy as well as 2.4GHz operation, where the 2.4GHz mode is on air compatible with the nRF24L series products from Nordic Semiconductor. nRF51822_xxAA also incorporates a rich selection of analog and digital peripherals that can interact without CPU intervention through the Programmable Peripheral Interface (PPI) system. A flexible 31-pin GPIO mapping scheme allows I/O like serial interfaces, PWM and quadrature demodulator to be mapped to any device pin as dictated by PCB requirements. This enables complete design flexibility associated with pin-out location and function. nRF51822_xxAA supports the S110 Bluetooth low energy protocol stack as well as 2.4GHz protocol stacks, including Gazell, both available free of charge in the nRF51 Software Development Kit. nRF51822_xxAA requires a single power supply and gives the user the option of using on chip linear regulators giving a supply range of 1.8-3.6V, a direct 1.8V mode and an on-chip DCDC buck converter giving a supply range of 2.1-3.6V. The use of the DC-DC converter can be dynamically controlled during run time and enables nRF51822_xxAA to operate at radio peak currents below 10 mA @ 3V supply (TX @ 0 dBm & RX). This device requires additional software from Nordic Semiconductor to be supported in Keil MDK. Please contact Nordic Semiconductor to obtain the nRF51 SDK.