23. Electrical Characteristics

23.1Absolute Maximum Ratings*

..................................Operating Temperature

-55°C to +125°C

*NOTICE:

Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent dam-

Storage Temperature .....................................

-65°C to +150°C

age to the device. This is a stress rating only and

functional operation of the device at these or

Voltage on any Pin except

RESET

other conditions beyond those indicated in the

with respect to Ground ................................

-0.5V to VCC+0.5V

operational sections of this specification is not

Voltage on

with respect to Ground

-0.5V to +13.0V

implied. Exposure to absolute maximum rating

RESET

conditions for extended periods may affect

Maximum Operating Voltage

6.0V

device reliability.

DC Current per I/O Pin ...............................................

40.0 mA

DC Current VCC and GND Pins................................

200.0 mA

DC Characteristics T = -40°C to 85°C, V

CC

= 1.8V to 5.5V (unless otherwise noted)(1)

A

Symbol

Parameter

Condition

Min.

Typ.

Max.

Units

VIL

Input Low-voltage

Except XTAL1 and

-0.5

0.2VCC

V

pin

RESET

Except XTAL1 and

(3)

VIH

Input High-voltage

pin

0.6VCC

VCC +0.5

V

RESET

VIL1

Input Low-voltage

XTAL1 pin, External

-0.5

0.1VCC

V

Clock Selected

VIH1

Input High-voltage

XTAL1 pin, External

(3)

VCC +0.5

V

Clock Selected

0.8VCC

VIL2

Input Low-voltage

pin

-0.5

0.2VCC

V

RESET

(3)

VIH2

Input High-voltage

RESET pin

VCC +0.5

V

0.9VCC

VIL3

Input Low-voltage

pin as I/O

-0.5

0.2VCC

V

RESET

VIH3

(3)

Input High-voltage

RESET pin as I/O

VCC +0.5

V

0.6VCC

Output Low Voltage(4)

I

OL

= 10 mA, V = 5V

0.6

V

VOL

CC

(Port B)

IOL = 5 mA, VCC = 3V

0.5

V

VOH

Output High-voltage(5)

IOH = -10 mA, VCC = 5V

4.3

V

(Port B)

IOH = -5 mA, VCC = 3V

2.5

V

IIL

Input Leakage

Vcc = 5.5V, pin low

1

µA

Current I/O Pin

(absolute value)

IIH

Input Leakage

Vcc = 5.5V, pin high

1

µA

Current I/O Pin

(absolute value)

RRST

Reset Pull-up Resistor

30

60

kΩ

Rpu

I/O Pin Pull-up Resistor

20

50

kΩ

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DC Characteristics T		= -40°C to 85°C, V		CC	= 1.8V to 5.5V (unless otherwise noted)(1)			(Continued)
	A
Symbol	Parameter		Condition			Min.	Typ.	Max.	Units
			Active 1MHz, VCC = 2V					0.5	mA
			Active 4MHz, VCC = 3V					4	mA
	Power Supply Current		Active 8MHz, VCC = 5V					10	mA
ICC			Idle 1MHz, VCC = 2V					0.5	mA
			Idle 4MHz, VCC = 3V					1.5	mA
			Idle 8MHz, VCC = 5V					5	mA
	Power-down mode		WDT enabled, VCC = 3V					15	µA
			WDT disabled, VCC = 3V					2	µA

Notes: 1. All DC Characteristics contained in this data sheet are based on simulation and characterization of other AVR microcontrollers manufactured in the same process technology. These values are preliminary values representing design targets, and will be updated after characterization of actual silicon.

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 (10 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 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 (10 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.

23.2External Clock Drive Waveforms

Figure 23-1. External Clock Drive Waveforms

VIH1

VIL1

0np

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23.3External Clock Drive

Table 23-1.		External Clock Drive
			VCC = 1.8 - 5.5V		VCC = 2.7 - 5.5V		VCC = 4.5 - 5.5V
Symbol		Parameter	Min.	Max.	Min.	Max.	Min.	Max.	Units
1/tCLCL		Clock Frequency	0	4	0	10	0	20	MHz
tCLCL		Clock Period	250		100		50		ns
tCHCX		High Time	100		40		20		ns
tCLCX		Low Time	100		40		20		ns
tCLCH		Rise Time		2.0		1.6		0.5	µs
tCHCL		Fall Time		2.0		1.6		0.5	µs
∆tCLCL		Change in period from one clock cycle to the next		2		2		2	%

23.4Maximum Speed vs. VCC

Figure 23-2.	Maximum Frequency vs. VCC
	10 MHz
		Safe Operating Area
	4 MHz
	1.8V	2.7V	5.5V
Figure 23-3.	Maximum Frequency vs. VCC
	20 MHz

10 MHz

Safe Operating Area

2.7V

4.5V

5.5V

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23.5ADC Characteristics – Preliminary Data

Table 23-2. ADC Characteristics, Single Ended Channels. -40°C - 85°C

Symbol	Parameter	Condition	Min(1)	Typ(1)	Max(1)	Units
	Resolution	Single Ended Conversion			10	Bits
		Single Ended Conversion
		VREF = 4V, VCC = 4V,		2		LSB
		ADC clock = 200 kHz
		Single Ended Conversion
		VREF = 4V, VCC = 4V,		3		LSB
	Absolute accuracy (Including	ADC clock = 1 MHz
		Single Ended Conversion
	INL, DNL, quantization error,
		VREF = 4V, VCC = 4V,
	gain and offset error)			1.5		LSB
		ADC clock = 200 kHz
		Noise Reduction Mode
		Single Ended Conversion
		VREF = 4V, VCC = 4V,		2.5		LSB
		ADC clock = 1 MHz
		Noise Reduction Mode
		Single Ended Conversion
	Integral Non-linearity (INL)	VREF = 4V, VCC = 4V,		1		LSB
		ADC clock = 200 kHz
		Single Ended Conversion
	Differential Non-linearity (DNL)	VREF = 4V, VCC = 4V,		0.5		LSB
		ADC clock = 200 kHz
		Single Ended Conversion
	Gain Error	VREF = 4V, VCC = 4V,		2.5		LSB
		ADC clock = 200 kHz
		Single Ended Conversion
	Offset Error	VREF = 4V, VCC = 4V,		1.5		LSB
		ADC clock = 200 kHz
	Conversion Time	Free Running Conversion	13		260	µs
	Clock Frequency		50		1000	kHz
VIN	Input Voltage		GND		VREF	V
	Input Bandwidth			38.5		kHz
VINT	Internal Voltage Reference		1.0	1.1	1.2	V
RAIN	Analog Input Resistance			100		MΩ
Note: 1.	Values are preliminary.

2.Minimum for AVCC is 1.8V.

3.Maximum for AVCC is 5.5V.

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24. ATtiny25/45/85 Typical Characteristics – Preliminary Data - TBD

The data contained in this section is largely based on simulations and characterization of similar devices in the same process and design methods. Thus, the data should be treated as indications of how the part will behave.

The following charts show typical behavior. These figures are not tested during manufacturing. All current consumption measurements are performed with all I/O pins configured as inputs and with internal pull-ups enabled. A sine wave generator with rail-to-rail output is used as clock source.

The power consumption in Power-down mode is independent of clock selection.

The current consumption is a function of several factors such as: operating voltage, operating frequency, loading of I/O pins, switching rate of I/O pins, code executed and ambient temperature. The dominating factors are operating voltage and frequency.

The current drawn from capacitive loaded pins may be estimated (for one pin) as CL*VCC*f where

CL = load capacitance, VCC = operating voltage and f = average switching frequency of I/O pin.

The parts are characterized at frequencies higher than test limits. Parts are not guaranteed to function properly at frequencies higher than the ordering code indicates.

The difference between current consumption in Power-down mode with Watchdog Timer enabled and Power-down mode with Watchdog Timer disabled represents the differential current drawn by the Watchdog Timer.

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