ATmega32A datasheet(297/352 Pages) ATMEL

297 / 352 page

297

8155B–AVR–07/09

ATmega32A

Notes:

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 (20 mA at Vcc = 5V, 10 mA at Vcc = 3V) under steady state

conditions (non-transient), the following must be observed:

PDIP Package:

1] The sum of all IOL, for all ports, should not exceed 200 mA.

2] The sum of all IOL, for port A0 - A7, should not exceed 100 mA.

3] The sum of all IOL, for ports B0 - B7,C0 - C7, D0 - D7 and XTAL2, should not exceed 100 mA.

TQFP and QFN/MLF Package:

1] The sum of all IOL, for all ports, should not exceed 400 mA.

2] The sum of all IOL, for ports A0 - A7, should not exceed 100 mA.

3] The sum of all IOL, for ports B0 - B4, should not exceed 100 mA.

4] The sum of all IOL, for ports B3 - B7, XTAL2, D0 - D2, should not exceed 100 mA.

5] The sum of all IOL, for ports D3 - D7, should not exceed 100 mA.

6] The sum of all IOL, for ports C0 - C7, 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 (20 mA at Vcc = 5V, 10 mA at Vcc = 3V) under steady state

conditions (non-transient), the following must be observed:

PDIP Package:

1] The sum of all IOH, for all ports, should not exceed 200 mA.

2] The sum of all IOH, for port A0 - A7, should not exceed 100 mA.

3] The sum of all IOH, for ports B0 - B7,C0 - C7, D0 - D7 and XTAL2, should not exceed 100 mA.

TQFP and QFN/MLF Package:

1] The sum of all IOH, for all ports, should not exceed 400 mA.

2] The sum of all IOH, for ports A0 - A7, should not exceed 100 mA.

3] The sum of all IOH, for ports B0 - B4, should not exceed 100 mA.

4] The sum of all IOH, for ports B3 - B7, XTAL2, D0 - D2, should not exceed 100 mA.

5] The sum of all IOH, for ports D3 - D7, should not exceed 100 mA.

6] The sum of all IOH, for ports C0 - C7, should not exceed 100 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.

5. Minimum VCC for Power-down is 2.5V.

ICC

Power Supply Current

Active 1 MHz, VCC = 3V

0.6

Active 4 MHz, VCC = 3V

2.1

Active 8 MHz, VCC = 5V

7.5

Idle 1 MHz, VCC = 3V

0.2

Idle 4 MHz, VCC = 3V

0.6

2.5

Idle 8 MHz, VCC = 5V

2.8

Power-down Mode(5)

WDT enabled, VCC = 3V

< 10

µA

WDT disabled, VCC = 3V

< 1

µA

VACIO

Analog Comparator

Input Offset Voltage

VCC = 5V

Vin = VCC/2

IACLK

Analog Comparator

Input Leakage Current

VCC = 5V

Vin = VCC/2

-50

tACPD

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)

Symbol

Parameter

Condition

Min

Typ

Max

Units

ATmega32A Datasheet(PDF) 297 Page - ATMEL Corporation

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