Model:ATSAM3S4AA-AU BRAND:Microchip description:IC MCU 32BIT 256KB FLASH 48LQFP pack:tray SERIES:SAM3S status:in stock Core processor:ARM? Cortex?-M3 Core specifications:32-位 Speed:64MHz Peripherals:Undervoltage detection/reset,DMA,I2S,POR,PWM,WDT I/O number:34 Program storage capacity:256KB(256K x 8) Program memory type:Flash memory EEPROM capacity:- RAM size:48K x 8 Voltage - powered by:1.62V ~ 3.6V Data converter:A/D 8x10/12b Oscillator type:bosom Operating temperature:-40°C ~ 85°C(TA) Type of installation:Surface mount type Encapsulation/Shell:48-LQFP Supplier device packaging:48-LQFP(7x7)