Digi-Key Part Number, Manufacturer Part Number, Manufacturer, Packaging, Quantity Available, Unit Price, Minimum Quantity. ATMEGA48-20MU-ND ... 
The various special features of Port B are elaborated in “Alternate Functions of Port .... monolithic chip, the Atmel ATmega48/88/168 is a powerful microcontroller ... 
Product Category, 8-bit Microcontrollers - MCU. Data ROM Size, 512 B. Maximum Clock Frequency, 20 MHz. Alternate Part No. 556-ATMEGA48-20MU. Number ... 
The various special features of Port B are elaborated in “Alternate functions of port B” on page. 77 and “System ... 2. Overview. The Atmel ATmega48/88/168 is a low-power CMOS 8-bit microcontroller based on the AVR ...... ATmega48-20MU .