Manufacturer: Atmel  •  Series: AVR® 90LS  •  Core Processor: AVR  •  Core Size: 8-Bit  •  Speed: 4MHz  •  Connectivity: SPI  •  Peripherals: Brown-out Detect/Reset, POR, WDT  •  Number of I /O: 5  •  Program Memory Size: 2KB (2K x 8)  •  Program Memory Type: FLASH  •  EEPROM Size: 128 x 8  •  RAM Size: 128 x 8  •  Voltage - Supply (Vcc/Vdd): 2.7 V ~ 6 V  •  Oscillator Type: Internal  •  Operating Temperature: -40°C ~ 85°C  •  Package / Case: 8-SOIC