The new variant will offer an identical feature, peripherals, and performance set but half the Flash memory at 128 kB (instead of 256 kB) and be based on the same nRF51 Series technology platform.
The device will offer the same industry-first multiprotocol radio and a 32-bit ARM Cortex-M0 based processor optimized for ultra low power wireless applications and deliver -92.5 dB RX sensitivity in Bluetooth low energy mode; up to +4 dBm output power in all modes; up to 9.5 dBm improvement in link budget compared to previous generations of class-leading Nordic chips, and sub-10 mA peak currents running off a 3 V coin cell battery for months or years of battery life (depending on the application). As with the existing nRF51822, this new nRF51822 128 kB variant will also be 100 percent on air compatible with Nordic's existing nRF24L series ICs.
The new device will complement Nordic's existing nRF51822 (256 kB) Flash SoC by targeting the most price sensitive ULP wireless applications that are typically high volume consumer products such as entry-level PC mice and keyboards, smartphone accessories, and toys.
The nRF51822 (128 kB) also offers pin-to-pin compatibility with the existing nRF51822 (256kB) and so could serve as a drop-in replacement for any existing nRF51822-based designs that could operate with half the Flash memory, allowing smooth and seamless migration without any engineering risk or re-qualification requirements with relevant regulatory bodies such as the FCC and EU.
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