Selection Guide for AVR MCU

Atmega169 tqfp package mainly has the following models: ATmega169V-8AU, ATmega169V-8AI, ATmega169-16AU, ATmega169-16AI.

Model ID description:
(1) The difference between "V" and "V": the voltage range supported by "V" is 1.8-5.5 V. If "v" is not provided, the supported voltage range is 2.7-5.5 V.
(2) The numeric part of the suffix represents the maximum system clock that MCU can support, such as ATmega169V-8AU and ATmega169V-8AI refers to the system clock that can support up to 8 MHz. While ATmega169-16AU and ATmega169-16AI refer to a system clock that can support up to 16 MHz.
(3) The first letter of the suffix represents the MCU encapsulation form, "P" indicates dip encapsulation, and "A" indicates tqfp encapsulation.
ATmega169V-8AI, for example, shows that it is a tqfp package.
(4) The second letter of the suffix indicates the application level of the MCU, "C" indicates the commercial level, and "I" and "U" indicates the industrial level.
For example, the ATmega169V-8AC with "C" for the commercial level, the ATmega169V-8AI with "I" for industrial level. It should be noted that, because Lead-Free IC is currently required in Europe and the US, Atmel will only launch
"The avr mcu, which will replace the original model with" I ", such as the ATmega169V-8AU will replace the original ATmega169V-8AI.