







Summary
Because the Yún has two processors, the summary section shows the characteristics of each one in two separate tables.
AVR Arduino microcontroller
Microcontroller ATmega32u4
Operating Voltage 5V
Input Voltage 5V
Digital I/O Pins 20
PWM Channels 7
Analog Input Channels 12
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 32 KB (of which 4 KB used by bootloader)
SRAM 2.5 KB
EEPROM 1 KB
Clock Speed 16 MHz
Linux microprocessor
Processor Atheros AR9331
Architecture MIPS @400MHz
Operating Voltage 3.3V
Ethernet IEEE 802.3 10/100Mbit/s
WiFi IEEE 802.11b/g/n
USB Type-A 2.0 Host/Device
Card Reader Micro-SD only
RAM 64 MB DDR2
Flash Memory 16 MB
PoE compatible 802.3af card support (see the note below)
Because the Yún has two processors, the summary section shows the characteristics of each one in two separate tables.
AVR Arduino microcontroller
Microcontroller ATmega32u4
Operating Voltage 5V
Input Voltage 5V
Digital I/O Pins 20
PWM Channels 7
Analog Input Channels 12
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 32 KB (of which 4 KB used by bootloader)
SRAM 2.5 KB
EEPROM 1 KB
Clock Speed 16 MHz
Linux microprocessor
Processor Atheros AR9331
Architecture MIPS @400MHz
Operating Voltage 3.3V
Ethernet IEEE 802.3 10/100Mbit/s
WiFi IEEE 802.11b/g/n
USB Type-A 2.0 Host/Device
Card Reader Micro-SD only
RAM 64 MB DDR2
Flash Memory 16 MB
PoE compatible 802.3af card support (see the note below)