Nordic Semiconductor has released the nRF24LE1, a 2,4 GHz ULP (ultra low-power) wireless system-on-chip solution that enables a single-chip implementation in wireless applications.
The chip integrates a fully-featured nRF24L01+ transceiver core including Nordic’s Enhanced ShockBurst hardware link layer. It delivers true ULP operation with peak currents low enough to run on coin cell batteries.
The nRF24LE1 also integrates an enhanced 8051 mixed signal MCU core featuring fewer clock cycles per instruction than legacy 8051 devices. Most instructions need just one or two clock cycles, leading to a claimed average performance improvement of eight times using the MIPS (million instructions per second) benchmark. This performance, combined with 16 KB of on-chip Flash and 1 KB of SRAM, ensures that the processing platform is powerful enough to run both the RF protocol stack and application layer.
A wide range of peripherals and power saving modes support the RF protocol stack. A ULP 32 kHz crystal oscillator provides high accuracy timing for low report-rate synchronous protocols and a 16 MHz RC oscillator provides fast startup times from idle. The 32 kHz oscillator can provide timing accurate enough for higher report rate protocols without requiring an external crystal. A security co-processor supports AES encrypted wireless communication. The device provides a range of nanoamp and microamp idle modes specifically designed for ULP RF protocol stacks.
For the application layer, the nRF24LE1 offers a set of interfaces and peripherals including SPI, 2-wire, UART, 12-bit ADC, PWM and an analog comparator.
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