Datasheet

379
7766E–AVR–04/10
ATmega16U4/ATmega32U4
Note: 1. "Max" means the highest value where the pin is guaranteed to be read as low
2. "Min" means the lowest value where the pin is guaranteed to be read as high
3. Although each I/O port can sink more than the test conditions (20mA at VCC = 5V, 10mA at VCC = 3V) under steady state
conditions (non-transient), the following must be observed:
ATmega16U4/ATmega32U4:
1.)The sum of all IOL, for ports A0-A7, G2, C4-C7 should not exceed 100 mA.
2.)The sum of all IOL, for ports C0-C3, G0-G1, D0-D7 should not exceed 100 mA.
3.)The sum of all IOL, for ports G3-G5, B0-B7, E0-E7 should not exceed 100 mA.
4.)The sum of all IOL, for ports F0-F7 should not exceed 100 mA.
If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater
than the listed test condition.
4. Although each I/O port can source more than the test conditions (20mA at VCC = 5V, 10mA at VCC = 3V) under steady
state conditions (non-transient), the following must be observed:
ATmega16U4/ATmega32U4:
1)The sum of all IOH, for ports A0-A7, G2, C4-C7 should not exceed 100 mA.
2)The sum of all IOH, for ports C0-C3, G0-G1, D0-D7 should not exceed 100 mA.
3)The sum of all IOH, for ports G3-G5, B0-B7, E0-E7 should not exceed 100 mA.
4)The sum of all IOH, for ports F0-F7 should not exceed 100 mA.
I
CC
Power Supply Current
(6)
Active 4MHz, V
CC
= 3V
(ATmega16U4/ATmega32
U4)
5mA
Active 8MHz, V
CC
= 5V
(ATmega16U4/ATmega32
U4)
10 15 mA
Idle 4MHz, V
CC
= 3V
(ATmega16U4/ATmega32
U4)
2mA
Idle 8MHz, V
CC
= 5V
(ATmega16U4/ATmega32
U4)
6mA
Power-down mode
WDT enabled, V
CC
= 3V,
Regulator Disabled
<10 12 µA
WDT disabled, V
CC
=
3V,Regulator Disabled
15µA
V
ACIO
Analog Comparator
Input Offset Voltage
V
CC
= 5V
V
in
= V
CC
/2
<10 40 mV
I
ACLK
Analog Comparator
Input Leakage Current
V
CC
= 5V
V
in
= V
CC
/2
-50 50 nA
t
ACID
Analog Comparator
Propagation Delay
V
CC
= 2.7V
V
CC
= 4.0V
750
500
ns
Rusb
USB Series resistor
(external)
22±5% Ω
Vreg Regulator Output Voltage
C
UCAP
=1µF±20%,
UVcc4.0V, I≤80mA
(7)
,
or
UVcc3.4V, I≤55mA
(7)
3.0 3.3 3.6 V
T
A
= -40°C to 85°C, V
CC
= 2.7V to 5.5V (unless otherwise noted) (Continued)
Symbol Parameter Condition Min.
(5)
Typ. Max.
(5)
Units