2 Peripheral Overview

The following table shows the peripheral overview of the entire AVR® EA Family, but further documentation describes only the AVR16EA28/32/48 devices.

Table 2-2. Peripheral Overview
Feature

AVR16EA28
                                AVR32EA28
                                AVR64EA28

AVR16EA32
                                AVR32EA32
                                AVR64EA32

AVR16EA48
                                AVR32EA48
                                AVR64EA48

Pins

28

32

48

Max. frequency (MHz) 20 20 20
16-bit Timer/Counter type A (TCA)222
16-bit Timer/Counter type B (TCB)444
Real-Time Counter (RTC)111
USART/SPI host333
SPI host/client111
TWI/I2C1(1)1(1)1(1)
12-bit differential ADC (channels)1 (20)1 (24)1 (28)
10-bit DAC111
Analog Comparator (AC)222
Configurable Custom Logic Look-up Table (CCL LUT)444
Watchdog Timer111
Event System channels666
General Purpose I/O pins (input/output (2))24/2328/2742/41
PORT

PA[7:0]
                                PC[3:0]
                                PD[7:0]
                                PF[7,6,1,0]

PA[7:0]
                                PC[3:0]
                                PD[7:0]
                                PF[7:0]

PA[7:0]
                                PB[5:0]
                                PC[7:0]
                                PD[7:0]
                                PE[3:0]
                                PF[7:0]

External interrupts242842
CRCSCAN111
Unified Program and Debug Interface (UPDI)111
Note:
  1. The TWI/I2C can operate simultaneously as a host and client on different pins.
  2. PF6/RESET pin is input only.