Electrical Characteristics

Absolute 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 device
Maximum Operating Voltage					6.0V	reliability.
DC Current per I/O Pin ...............................................					40.0 mA
DC Current VCC and GND Pins ................................					200.0 mA

DC Characteristics

TA = -40°C to 85°C, VCC = 2.7V to 5.5V (unless otherwise noted)

Symbol

Parameter

Condition

Min

Typ

Max

Units

VIL

Input Low Voltage

Except XTAL1 pin

-0.5

(1)

V

0.2 VCC

XTAL1 pin, External

(1)

VIL1

Input Low Voltage

Clock Selected

-0.5

0.1 VCC

V

VIH

Input High Voltage

Except XTAL1 and

0.6 VCC

(2)

VCC

+ 0.5

V

RESET

pins

VIH1

Input High Voltage

XTAL1 pin, External

0.8 VCC

(2)

VCC

+ 0.5

V

Clock Selected

(2)

VIH2

Input High Voltage

RESET pin

0.9 VCC

VCC

+ 0.5

V

Output Low Voltage(3)

I

OL

= 20 mA, V

= 5V

0.7

V

VOL

CC

(Ports A,B,C,D)

IOL = 10 mA, VCC = 3V

0.5

V

VOH

Output High Voltage(4)

IOH = -20 mA, VCC = 5V

4.2

V

(Ports A,B,C,D)

IOH = -10 mA, VCC = 3V

2.2

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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2502F–AVR–06/04

ATmega8535(L)

TA = -40°C to 85°C, VCC = 2.7V to 5.5V (unless otherwise noted)				(Continued)
Symbol	Parameter	Condition		Min		Typ	Max	Units
		Active 4 MHz, VCC = 3V				4		mA
		(ATmega8535L)
		Active 8 MHz, VCC = 5V				14		mA
		(ATmega8535)
	Power Supply Current
ICC		Idle 4 MHz, VCC = 3V				3		mA
		(ATmega8535L)
		Idle 8 MHz, VCC = 5V				10		mA
		(ATmega8535)
	Power-down mode(5)	WDT enabled, VCC = 3V				< 10		µA
		WDT disabled, VCC = 3V				< 3		µA
VACIO	Analog Comparator	VCC = 5V					40	mV
	Input Offset Voltage	Vin = VCC/2
IACLK	Analog Comparator	VCC = 5V		-50			50	nA
	Input Leakage Current	Vin = VCC/2
tACID	Analog Comparator	VCC = 2.7V				750		ns
	Propagation Delay	VCC = 4.0V				500

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 (20mA at VCC = 5V, 10mA 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 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 - B3, should not exceed 100 mA. 4] The sum of all IOL, for ports B4 - B7, should not exceed 100 mA. 5] The sum of all IOL, for ports C0 - C3, should not exceed 100 mA. 6] The sum of all IOL, for ports C4 - C7, should not exceed 100 mA.

7] The sum of all IOL, for ports D0 - D3 and XTAL2, should not exceed 100 mA. 8] The sum of all IOL, for ports D4 - D7, 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:

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 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 - B3, should not exceed 100 mA. 4] The sum of all IOH, for ports B4 - B7, should not exceed 100 mA. 5] The sum of all IOH, for ports C0 - C3, should not exceed 100 mA. 6] The sum of all IOH, for ports C4 - C7, should not exceed 100 mA.

7] The sum of all IOH, for ports D0 - D3 and XTAL2, should not exceed 100 mA. 8] The sum of all IOH, for ports D4 - D7, should not exceed 100 mA

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2502F–AVR–06/04

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.

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ATmega8535(L)

External Clock Drive

Waveforms

External Clock Drive

Figure 126. External Clock Drive Waveforms

VIH1

VIL1

Table 110. External Clock Drive

			VCC = 2.7V to 5.5V			VCC = 4.5V to 5.5V
Symbol	Parameter		Min		Max	Min		Max		Units
1/tCLCL	Oscillator Frequency		0		8	0		16		MHz
tCLCL	Clock Period		125			62.5				ns
tCHCX	High Time		50			25				ns
tCLCX	Low Time		50			25				ns
tCLCH	Rise Time				1.6			0.5		µs
tCHCL	Fall Time				1.6			0.5		µs
	Change in period from
∆tCLCL	one clock cycle to the				2			2		%
	next
Table 111. External RC Oscillator, Typical Frequencies
	R [kΩ](1)			C [pF]				f(2)
	100			47				87 kHz
	33			22				650 kHz
	10			22				2.0 MHz

Notes: 1. R should be in the range 3 kΩ - 100 kΩ, and C should be at least 20 pF. The C values given in the table includes pin capacitance. This will vary with package type.

2. The frequency will vary with package type and board layout.

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