VREF Characteristics

Figure 1. ATtiny1614/1616/1617: Internal 0.55V Reference vs. Temperature
Figure 2. ATtiny1614/1616/1617: Internal 1.1V Reference vs. Temperature
Figure 3. ATtiny1614/1616/1617: Internal 2.5V Reference vs. Temperature
Figure 4. ATtiny1614/1616/1617: Internal 4.34V Reference vs. Temperature