ATmega16U4 datasheet(381/408 Pages) ATMEL

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381

7766D–AVR–01/09

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.

5. All DC Characteristics contained in this datasheet are based on simulation and characterization of other AVR microcon-

trollers manufactured in the same process technology. These values are preliminary values representing design targets, and

will be updated after characterization of actual silicon

6. Values with “Power Reduction Register 1 - PRR1” disabled (0x00).

7. As specified on the USB Electrical chapter, the D+/D- pads can withstand voltages down to -1V applied through a 39 Ohms

resistor

ICC

Power Supply Current(6)

Active 4MHz, VCC = 3V

(ATmega16U4/ATmega32

U4)

5mA

Active 8MHz, VCC = 5V

(ATmega16U4/ATmega32

U4)

Idle 4MHz, VCC = 3V

(ATmega16U4/ATmega32

U4)

2.2

Idle 8MHz, VCC = 5V

(ATmega16U4/ATmega32

U4)

8mA

Power-down mode

WDT enabled, VCC = 3V

<10

µA

WDT disabled, VCC = 3V

µA

VACIO

Analog Comparator

Input Offset Voltage

VCC = 5V

Vin = VCC/2

<10

IACLK

Analog Comparator

Input Leakage Current

VCC = 5V

Vin = VCC/2

-50

tACID

Analog Comparator

Propagation Delay

VCC = 2.7V

VCC = 4.0V

750

500

A = -40⋅C to 85⋅C, VCC = 2.7V to 5.5V (unless otherwise noted) (Continued)

Symbol

Parameter

Condition

Min.(5)

Typ.

Max.(5)

Units

ATmega16U4 Datasheet(PDF) 381 Page - ATMEL Corporation

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