
904
32142D–06/2013
ATUC64/128/256L3/4U
2. These values are based on simulation and characterization of other AVR microcontrollers manufactured in the same pro-
cess technology. These values are not covered by test limits in production.
Notes:
1. V
VDD corresponds to either VVDDIN or VVDDIO, depending on the supply for the pin. Refer to Section on page 10 for details. 2. These values are based on simulation and characterization of other AVR microcontrollers manufactured in the same pro-
cess technology. These values are not covered by test limits in production.
Table 35-8.
High-drive I/O, 5V Tolerant, Pin Characteristics
(1)Symbol
Parameter
Condition
Min
Typ
Max
Units
RPULLUP
Pull-up resistance
30
50
110
kOhm
VIL
Input low-level voltage
VVDD = 3.0V
-0.3
0.3 * VVDD
V
VDD = 1.62 V
-0.3
0.3 * V
VDD
V
IH
Input high-level voltage
VVDD = 3.6V
0.7 * VVDD
5.5
V
VVDD = 1.98V
0.7 * VVDD
5.5
VOL
Output low-level voltage
V
VDD = 3.0 V, IOL = 6 mA
0.4
V
VVDD = 1.62V, IOL = 4mA
0.4
VOH
Output high-level voltage
VVDD = 3.0V, IOH = 6mA
VVDD - 0.4
V
VDD = 1.62 V, IOH = 4 mA
V
VDD - 0.4
f
MAX
VVDD = 3.0V, load = 10pF
87
MHz
VVDD = 3.0V, load = 30pF
58
tRISE
V
VDD = 3.0 V, load = 10 pF
2.3
ns
VVDD = 3.0V, load = 30pF
4.3
tFALL
VVDD = 3.0V, load = 10pF
1.9
V
VDD = 3.0 V, load = 30 pF
3.7
ILEAK
Input leakage current
5.5V, pull-up resistors disabled
10
A
CIN
Input capacitance
TQFP48 package
4.5
pF
QFN48 package
4.2
TLLGA48 package
4.2
TQFP64 package
4.6
QFN64 package
4.2
Table 35-9.
TWI Pin Characteristics
(1)Symbol
Parameter
Condition
Min
Typ
Max
Units
R
PULLUP
Pull-up resistance
25
35
60
kOhm
V
IL
Input low-level voltage
VVDD = 3.0V
-0.3
0.3 * VVDD
V
VDD = 1.62 V
-0.3
0.3 * V
VDD
VIH
Input high-level voltage
VVDD = 3.6V
0.7 * VVDD
VVDD + 0.3
V
VVDD = 1.98V
0.7 * VVDD
VVDD + 0.3
Input high-level voltage, 5V tolerant
SMBUS compliant pins
V
VDD = 3.6 V
0.7 * V
VDD
5.5
V
VVDD = 1.98V
0.7 * VVDD
5.5