Low-Power MCUs

The C8051F9xx product family is designed to dramatically increase battery lifetime. It has the industry’s lowest active mode current consumption which saves power when the application is running. It also has the industry’s lowest current consumption sleep modes that save power when the device is sleeping, which is often the majority of time in typical battery powered applications. The C8051F9xx family includes up to 64 kB of Flash, 4 kB of RAM, a 12-bit analog-to-digital converter (ADC), multiple comparators and a 25 MHz processor all in a compact 4 mm x 4 mm package.

 C8051F90x/1x  C8051F92x/3x

Having ultra-low sleep current is vital for applications with a small power budget.  Systems with battery-operated wireless nodes (RFID, security, smart metering, etc.) wake up periodically, quickly perform measurements, transmit data and then go back to sleep to conserve power.  In sleep modes the C8051F91x/0x enters an ultra-low current state, preserving the contents of all the registers and SRAM. The real-time clock (RTC) is active so the MCU can wake up periodically using either the internal low power oscillator (C8051F912/02 only) or an external crystal source.