CAMBRIDGE, UK Silicon Laboratories announced the ultra-low-power C8051F91x/0x MCUs, offering what the company claims to be the lowest active mode current consumption at 160 microA per MHz.
The F91x/0x family is well suited for a wide range of applications where low power consumption is critical such as smart meters, RFID tags, personal medical devices, sensor interfaces, energy harvesting, home security systems, and smoke and fire detectors.
The MCUs offer an active mode current consumption of 160microA per MHz, which saves power when the system is running. They also consume the lowest current in sleep mode, says the manufacturer, either with an active real-time clock and brown-out detect circuit (300 nA) or without a real-time clock or brown-out detect circuit operating (10nA) while maintaining full RAM retention.
In systems that use sleep modes, a significant amount of power can be wasted waking up the MCU and preparing it to acquire or process data. The F91x/0x family has been designed to wake up in an extremely short amount of time (less than two microseconds), minimizing the amount of time spent in an energy-wasting state.
These industry-leading low-power specifications enable manufacturers to either extend the battery lifetime of their end products or potentially use smaller batteries, saving additional system cost.
The F91x/0x MCUs offer cost-effective 8 kB and 16 kB flash memory options while providing 25 MIPS core performance and advanced analog peripherals such as an on-chip 12-bit ADC with an autonomous power-saving burst mode.
The devices are software and footprint compatible, enabling developers to use one board layout and code set while migrating to lower-cost designs. Their integrated DC/DC converter is designed to operate down to 0.9 V, enabling low-cost AA or AAA battery operation, which supports smaller form factors, reduces system cost and provides an innovative way to extend battery life.
In addition, the DC/DC converter can supply up to 65mW of output power to drive other system components such as LEDs, RF transceivers and sensors, creating a true single-battery system solution.
This environmentally friendly, low-voltage capability ultimately helps consumers save money by reducing the number of batteries required for a given application by half. The C8051F91x/0x family comes in a 24-pin 4x4-mm package.
The F91x/0x family is supported by the full-featured C8051F912 development kit, F912-based ToolStick and optional ToolStick programming adapters. C8051F9xx example code and Silicon Labs' battery life estimator GUI, a tool that helps designers optimize power, are also available at www.silabs.com/pr/lowpower and as part of each CD that ships with the development kit.
The ultra-low-power F91x/0x MCUs can be paired with Silicon Labs' CP240x LCD drivers for power-sensitive designs such as thermostat displays, home security systems and personal medical devices.
In addition, developers can combine an F91x/0x MCU with the company's EZRadioPRO wireless receivers for use in wireless nodes for weather stations, water and gas meters, home automation and security systems. Silicon Labs offers an RF-to-USB reference design that demonstrates sub-gigahertz, USB and low-power technologies for F91x/0x-based platforms.
Visit the company's website