Data Sheet

...........continued
Symbol Description Condition Min. Typ. Max. Unit
ESR
(1)
Equivalent Series Resistance - Safety Factor=3 C
L
=7.5 pF - - 80 kΩ
C
L
=12.5 pF - - 40
Note:
1. This parameter is for design guidance only and not production tested.
Figure 4-2. External Clock Waveform Characteristics

 


V
IL1
V
IH1
Table 4-15. External Clock Characteristics
Symbol Description Condition V
DD
=[1.8, 5.5]V V
DD
=[2.7, 5.5]V V
DD
=[4.5, 5.5]V Unit
Min. Max. Min. Max. Min. Max.
f
CLCL
Frequency 0 5.0 0.0 10.0 0.0 20.0 MHz
t
CLCL
Clock Period 200 - 100 - 50 - ns
t
CHCX
(1)
High Time 80 - 40 - 20 - ns
t
CLCX
(1)
Low Time 80 - 40 - 20 - ns
t
CLCH
(1)
Rise Time (for
maximum frequency)
- 40 - 20 - 10 ns
t
CHCL
(1)
Fall Time (for maximum
frequency)
- 40 - 20 - 10 ns
Δt
CLCL
(1)
Change in period from
one clock cycle to the
next
- 20 - 20 - 20 %
Note:
1. This parameter is for design guidance only and not production tested.
4.10 I/O Pin Characteristics
Table 4-16. I/O Pin Characteristics (T
A
=[-40, 85]°C, V
DD
=[1.8, 5.5]V unless otherwise noted)
Symbol Description Condition Min. Typ. Max. Unit
V
IL
Input Low Voltage -0.2 - 0.3×V
DD
V
V
IH
Input High Voltage 0.7×V
DD
- V
DD
+0.2V V
ATmega809/1609/3209/4809 – 48-pin
Electrical Characteristics
© 2019 Microchip Technology Inc.
Datasheet Preliminary
DS40002016B-page 17