Atmel Corporation ATMEGA1284P-MU 3rd Party Development Tools: EWAVR, EWAVR-BL Connectivity: I??C, SPI, UART/USART Core: AVR8 Core Processor: AVR Core Size: 8-Bit Data Bus Width: 8 bit Data Converters: A/D 8x10b Data Ram Size: 16 KB Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRRAVEN, ATAVRRZUSBSTICK Eeprom Size: 4K x 8 Interface Type: 2-Wire/SPI/USART Lead Free Status / Rohs Status: Lead free / RoHS Compliant Maximum Clock Frequency: 20 MHz Maximum Operating Temperature: + 85 C Minimum Operating Temperature: - 40 C Mounting Style: SMD/SMT Number Of I /o: 32 Number Of Programmable I/os: 32 Number Of Timers: 3 On-chip Adc: 8-ch x 10-bit Operating Temperature: -40?°C ~ 85?°C Oscillator Type: Internal Package / Case: 44-VQFN Exposed Pad Peripherals: Brown-out Detect/Reset, POR, PWM, WDT Processor Series: ATMEGA128x Program Memory Size: 128KB (64K x 16) Program Memory Type: FLASH Ram Size: 16K x 8 Series: AVR?® ATmega Speed: 20MHz Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V