Wireless MCUs draw only 18 mA when transmitting at +10 dBm, 50 nA in standby
By combining the company’s energy-efficient 8051 MCU technology with its sub-GHz EZRadio and EZRadioPRO transceivers in a 5x6mm QFN single-chip solution, the Si106x and Si108x wireless MCUs support worldwide frequency bands from 142 to 1050 MHz with low-power sleep and active modes for extended battery life. The chips address the low energy and RF connectivity requirements of home automation, security and access control, sensor networks, asset tracking and long-range control applications for the Internet of Things.
The devices also feature a priority crossbar decoder that gives designers complete control over a variety of functions including a 10-bit analogue-to-digital converter, dual comparators, four 16-bit timers as well as UART, SPI and 12C serial interfaces. This flexible crossbar configurability eliminates the trade-offs that often must be made with small packages.
The EZRadioPRO transceiver offers a higher sensitivity of -126 dBm and a higher output power of +20 dBm for long-range applications. Its 60 dB adjacent channel selectivity with 12.5 kHz channel spacing ensures robust operation in harsh RF conditions. Designed to comply with the industry’s most stringent wireless standards including FCC, ETSI and ARIB, the EZRadioPRO transceiver offers frequency coverage in all major bands up to 1050 MHz and supports data rates from 100 bps to 1 Mbps.
Both Si106x/8x MCU family options feature ultra-low power consumption when the radio is active, 18 mA when transmitting at +10 dBm and 10.7 mA in low-power receive mode. Low power modes enable dramatically reduced power consumption when the radio is idle or off: 30 nA shutdown, 50 nA standby and 600 nA in sleep mode. Built-in DC-DC boost support allows operation down to 0.9V for single-cell battery operation, which reduces system cost while extending the life of battery-powered products.
The devices are available with flash memory scaling from 8 to 64 kB, and 768 bytes to 4 kB of RAM. Additionally, wireless MCU devices are available with +13 dBm or +20 dBm maximum output power.
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