Operating Voltage Range: 1.8~5.5V l Operating Temperature Range: -40℃~+85℃ l Typical current consumption n Active：150uA/MHz n Standby：15uA@32KHz n Sleep w/ LCD on：<10uA n DeepSleep w/ RTC & 16KB RAM：1uA n DeepSleep w/o RTC：0.5uA l Low power mode fast wake-up n Sleep mode wake-up time: <20us n DeepSleep mode wake-up time: <50us l ARM Cortex-M0+ n Frequency up to 40MHz n Memory Protection Unit n Unprivileged/Priviledged mode n NVIC n SWD debug interface l Flash memory n Up to 512K bytes program space n Endurance 20,000cycles n Data retention >10yrs（@85℃） n Bootloader self-progamming supported n Code protection mechanism