Overview
As an optimized Wi-Fi solution for the internet of things (IoT) devices, NRC7292 is the industry’s first system on a chip (SoC) that is compliant with the IEEE 802.11ah standard. Operating in the Sub 1GHz license-exempt band, it offers a much greater range over 2.4GHz and 5GHz technologies. 1/2/4MHz channel widths with optional short guard interval (SGI) yield 150 Kbps to 15 Mbps PHY throughput which can support the low-rate sensors to the high-rate surveillance camera application. The protocol’s power-saving mechanisms like a longer sleep time greatly reduce power consumption and hence increase battery life.
The self-contained IEEE 802.11ah Wi-Fi networking capabilities with fully integrated radio transceiver of NRC7292 offers the ideal solution to add Wi-Fi connectivity to IoT products. It minimizes the PCB size, requires minimal external circuitries, and enables fast time-to-market.
The RF transceiver is a complete radio front-end optimized for Sub 1GHz band and it has fully integrated pre-power amplifiers as well as the capability to support various commercial external FEM devices. With the dual embedded ARM Cortex-M0 and Cortex-M3 processor, NRC7292 can be used either as a standalone device or a slave to a host processor via the serial peripheral interface (SPI) or universal asynchronous receiver transmitter (UART) interface. In addition, it can support both AP and STA roles.
Target Applications
- IoT applications
- Wearables
- Home automation
- Healthcare
- Industrial automation
- Safety and security
- Smart grid
- Multimedia streaming
Key Features
- Complies with IEEE 802.11ah draft 8.0
- Fully Integrated on-chip 11ah modem, RF transceiver, processor, and memory
- Support 1/2/4 MHz bandwidth
- Up to 15 Mbps data rate
- Travelling pilot for Doppler spread
- Low power mode operation
- Legacy
- WMM-PS
- TWT
- AES-CCMP security
- Dedicated SPI and UART interface for host
- Various peripheral interfaces for sensor device
- Manufacturing tools for configuration and test
- Diagnostic and DUT test tools for indoor and outdoor test
Specification
CPU
- ARM Cortex-M3 for Application
- ARM Cortex-M0 for WLAN
- Mailbox for communication
Memory
- 32KB Boot ROM for M0
- 32KB Boot ROM for M3
- 752KB System SRAM
- XIP with cache (2 ways, 32KB)
Communication Peripherals
- GPIO X 54
- SPI X 4
- UART X 4
- I2C X 4
- 9-bit ADC X
RF Transceiver
- Single-ended RF ports
- Frequency band: 750 to 950MHz
- Linear TX output power: 0dBm
- TX gain range: 30dB
- RX noise figure: <4dB
- Max. input level: -10dBm
- 10bits ADC and DAC