The SAM4L sets a new standard for low power consumption. Taking a look at power consumption; in active mode the devices consumes down to 90 µA. This is one of the lowest in the industry by about 66%. Another important figure is the power consumption in WAIT mode. WAIT mode is the deepest sleep mode with full RAM retention. The SAM4L consumes only 1.5 µA in this mode. Additionally, it can go down to 700 nA in backup mode. The SAM4L also works without compromise in the entire voltage range, this means that flash writes and full ADC coverage is fully supported all the way down to the lowest voltage. The SAM4L also features ultra fast wake-up. It wakes up in only 1.5 µs from WAIT mode. That means that the MCU is ready faster than ever before to get to work. The SAM4L incorporates the powerful Cortex-M4 CPU. The SAM4L is also the first Cortex device to embed the award winning Peripheral Event System. This Event System allows peripherals to communicate and send data to each other without using the CPU. In addition, this has been extended into the sleep modes where peripherals can make intelligent decisions on whether or not to wake up the CPU. All of this further reduces the overall power consumption. The SAM4L also features a hardware capacitive touch module that allows the system to wake up from a touch of a button or a proximity detection. This is handled by a dedicated hardware module and can be configured in numerous ways; either as buttons, sliders and wheels. In addition, the SAM4L has an innovative segment LCD controller that supports up to 4 x 40 segments with many features to reduce power consumption. The SAM4L comes in 128 k and 256 k flash memory configurations; both with 32 KB of onboard SRAM. There is a wide range of user peripherals available such as UART, SPI and TWI (I2C) in addition to the ADC and DAC. There are USB host and device options available too. The USB embeds the transceivers. The SAM4L comes in 48-, 64- and 100-pin options and in a wide range of package options.