ATtiny25 datasheet(151/196 Pages) ATMEL

151 / 196 page

151

7598H–AVR–07/09

ATtiny25/45/85

Notes:

1. All DC Characteristics contained in this data sheet result from actual silicon characterization.

2. “Max” means the highest value where the pin is guaranteed to be read as low.

3. “Min” means the lowest value where the pin is guaranteed to be read as high.

4. Although each I/O port can sink more than the test conditions (8 mA at V

CC = 5V, 5 mA at VCC = 3V) under steady state con-

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

1] The sum of all IOL, for all ports, should not exceed 60 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.

5. Although each I/O port can source more than the test conditions (8 mA at VCC = 5V, 5 mA at VCC = 3V) under steady state

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

1] The sum of all IOH, for all ports, should not exceed 60 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.

6. All I/O modules are turned off (PRR = 0xFF) for all ICC values.

7. Brown-Out Detection (BOD) disabled.

22.2

External Clock Drive Waveforms

Figure 22-1. External Clock Drive Waveforms

ICC

(6)

Power Supply Current

Active 4MHz, VCC = 3V

1.25

Active 8MHz, VCC = 5V

Active 16MHz, VCC = 5V

Idle 4MHz, VCC = 3V

0.4

0.5

Idle 8MHz, VCC = 5V

1.2

Idle 16MHz, VCC = 5V

2.5

Power-down mode(7)

WDT enabled, VCC = 3V

µA

WDT disabled, VCC = 3V

µA

WDT enabled, VCC = 5V

µA

WDT disabled, VCC = 5V

µA

Table 22-1.

DC Characteristics T

A = -40°C to 125°C, VCC = 2.7V to 5.5V (unless otherwise noted)

(1) .

Symbol

Parameter

Condition

Min.(2)

Typ.

Max.(3)

Units

VIL1

VIH1

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