ATXMEGA128B1 Datasheet, PDF (97/138 Pages) ATMEL Corporation – 8/16-bit Atmel XMEGA B1 Microcontroller

Figure 37-17.I/O pin output voltage vs. source current.
V_CC = 3.3V.
2.5
2.25
2
85°C
25°C
-40°C
1.75
1.5
1.25
1
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
I_PIN [mA]
Figure 37-18.I/O pin output voltage vs. sink current.
V_CC = 1.8V.
1.8
85°C
1.6
1.4
1.2
1
0.8
0.6
25°C
-40°C
0.4
0.2
0
0
2
4
6
8
10
12
14
16
18
20
I_PIN [mA]
XMEGA B1 [DATASHEET] 97
8330C–AVR–07/2012