Model:ATSAML21E15B-MUT BRAND:Microchip description:IC MCU 32BIT 32KB FLASH 32QFN pack:tape(TR),Shear zone(CT),Digi-Reel? SERIES:SAM L21E status:in stock Core processor:ARM? Cortex?-M0+ Core specifications:32-位 Speed:48MHz Peripherals:DMA,POR,PWM,WDT I/O number:25 Program storage capacity:32KB(32K x 8) Program memory type:Flash memory EEPROM capacity:- RAM size:4K x 8 Voltage - powered by:1.62V ~ 3.63V Data converter:A/D 10x12b;D/A 2x12b Oscillator type:bosom Operating temperature:-40°C ~ 85°C(TA) Type of installation:Surface mount type Encapsulation/Shell:32-VFQFN Exposed pad Supplier device packaging:32-QFN(5x5)