Datasheet

265
7799D–AVR–11/10
ATmega8U2/16U2/32U2
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:
1.)The sum of all IOL, for ports B0-B7, C0-C7, D0-D7 should not exceed 150 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:
1.)The sum of all IOL, for ports B0-B7, C0-C7, D0-D7 should not exceed 150 mA.
If IOH exceeds the test condition, VOH may exceed the related specification. Pins are not guaranteed to source current
greater than the listed test condition.
R
PUDP
USB D+ Internal Pull-Up
Idle mode 900 1500 
Streaming mode 1425 3090 
I
CC
Power Supply Current
(6)
Active 8 MHz, V
CC
= 3V
regulator disabled
46mA
Active 16 MHz, V
CC
= 5V
regulator enabled
13.5 21 mA
Idle 8 MHz, V
CC
= 3V
regulator disabled
0.8 1.2 mA
Idle 16 MHz, V
CC
= 5V
regulator enabled
3.2 4.0 mA
Power-down mode
WDT disabled, regulator
disabled,V
CC
= 3V
510μA
WDT enabled, regulator
disabled,V
CC
= 3V
10 15 μA
WDT, BOD, regulator
enabled, Vcc = 5V
40 65 μA
Standby mode - 8MHZ
XTAL
WDT disabled, BOD
Enabled, regulator disabled,
Vcc = 3V
250 μA
WDT disabled, BOD,
regulator enabled, Vcc = 5V
350 μA
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% 
Vreg Regulator Output Voltage
Vcc4.0V, I100mA,
C
UCAP
=1μF±20%
3.0 3.3 3.6 V
UVcc 4 5.5 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