2 Peripheral Overview

Table 2-2. Peripheral Overview
Feature	AVR16EB14 AVR32EB14	AVR16EB20 AVR32EB20	AVR16EB28 AVR32EB28	AVR16EB32 AVR32EB32
Pins	14	20	28	32
Max. frequency (MHz)	20	20	20	20
16-bit Timer/Counter type B (TCB)	2	2	2	2
16-bit Timer/Counter type E (TCE)	1	1	1	1
Waveform Extension (WEX)	1	1	1	1
16-bit Timer/Counter type F (TCF)	1	1	1	1
Real-Time Counter (RTC)	1	1	1	1
USART/SPI host	1	1	1	1
SPI host/client	1	1	1	1
TWI/I²C⁽¹⁾	1	1	1	1
12-bit differential ADC (channels)	1 (8)	1 (14)	1 (20)	1 (24)
Analog Comparator (AC)	2	2	2	2
Configurable Custom Logic Look-up Table (CCL LUT)	4	4	4	4
Watchdog Timer	1	1	1	1
Event System channels	6	6	6	6
General Purpose I/O pins (input/output⁽²⁾)	12/11	18/17	24/23	28/27
PORT	PA[1:0] PC[3:0] PD[7:4] PF[7:6]	PA[7:0] PC[3:0] PD[7:4] PF[7:6]	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]
External interrupts	12	18	24	28
CRCSCAN	1	1	1	1
Unified Program and Debug Interface (UPDI)	1	1	1	1

Note: