334

2545M–AVR–09/07

ATmega48/88/168

29.10 BOD Thresholds and Analog Comparator Offset

Figure 29-33. BOD Thresholds vs. Temperature (BODLEVEL is 4.3V)

Figure 29-34. BOD Thresholds vs. Temperature (BODLEVEL is 2.7V)

BOD THRESHOLDS vs. TEMPERATURE

BODLEVEL IS 4.3V

4.2

4.25

4.3

4.35

4.4

4.45

4.5

-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100

Temperature (C)

Threshold (V)

Rising Vcc

Falling Vcc

BOD THRESHOLDS vs. TEMPERATURE

BODLEVEL IS 2.7V

2.6

2.65

2.7

2.75

2.8

2.85

2.9

-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100

Temperature (C)

Threshold (V)

Rising Vcc

Falling Vcc

335

2545M–AVR–09/07

ATmega48/88/168

Figure 29-35. BOD Thresholds vs. Temperature (BODLEVEL Is 1.8V)

Figure 29-36. Bandgap Voltage vs. V

BOD THRESHOLDS vs. TEMPERATURE

BODLEVEL IS 1.8V

1.76

1.78

1.8

1.82

1.84

1.86

-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100

Temperature (C)

Threshold (V)

Rising Vcc

Falling Vcc

BANDGAP VOLTAGE vs. V

-40 C

85 C

1.08

1.085

1.09

1.095

1.1

1.5 2 2.5 3 3.5 4 4.5 5 5.5 6

(V)

Bandgap Voltage (V

)

336

2545M–AVR–09/07

ATmega48/88/168

Figure 29-37. Analog Comparator Offset Voltage vs. Common Mode Voltage (V

=5V)

Figure 29-38. Analog Comparator Offset Voltage vs. Common Mode Voltage (V

=2.7V)

ANALOG COMPARATOR OFFSET VOLTAGE vs. COMMON MODE VOLTAGE

=5V

-40 C

85 C

0.001

0.002

0.003

0.004

0.005

0.006

0.007

0.008

0.009

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

Common Mode Voltage (V)

Analog comparator offset voltage (V)

ANALOG COMPARATOR OFFSET VOLTAGE vs. COMMON MODE VOLTAGE

=2.7V

-40 C

85 C

0.5

1.5

2.5

3.5

0 0.5 1 1.5 2 2.5

Common Mode Voltage (V)

Analog comparator offset voltage

(mV)

Part #	ATMEGA48-20AU
Description	MCU 8BIT ATMEGA RISC 4KB FLASH 3.3V/5V 32TQFP - Trays
Category	IC
Availability	Out of Stock
Qty	0

ATMEGA48-20AU

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Technical Document