19.7BOD Thresholds and Analog Comparator Offset
Figure 19-46. BOD Thresholds vs. Temperature (BODLEVEL is 4.3V)
BOD THRESHOLDS vs. TEMPERATURE
BODLEVEL IS 4.3V
4.5 |
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Rising VCC |
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4.4 |
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Threshold (V) |
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4.3 |
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Falling VCC |
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4.2 |
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-60 |
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-20 |
0 |
20 |
40 |
60 |
80 |
100 |
Temperature (C)
Figure 19-47. BOD Thresholds vs. Temperature (BODLEVEL is 2.7V)
BOD THRESHOLDS vs. TEMPERATURE
BODLEVEL IS 2.7V
2.9 |
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Rising VCC |
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2.8 |
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Threshold (V) |
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2.7 |
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Falling VCC |
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2.6 |
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-60 |
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-20 |
0 |
20 |
40 |
60 |
80 |
100 |
Temperature (C)
146 ATtiny13
2535J–AVR–08/10
ATtiny13
Figure 19-48. BOD Thresholds vs. Temperature (BODLEVEL is 1.8V)
BOD THRESHOLDS vs. TEMPERATURE
BODLEVEL IS 1.8V
1.9 |
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Rising VCC |
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1.85 |
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Threshold (V) |
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1.8 |
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Falling VCC |
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1.75 |
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-60 |
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-20 |
0 |
20 |
40 |
60 |
80 |
100 |
Temperature (C)
Figure 19-49. Bandgap Voltage vs. VCC
BANDGAP VOLTAGE vs. VCC
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1.06 |
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1.04 |
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(V) |
1.02 |
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85ºC |
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Voltage |
1 |
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25ºC |
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Bandgap |
0.98 |
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0.96 |
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-40ºC |
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0.94 |
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0.92 |
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1.5 |
2.5 |
3.5 |
4.5 |
5.5 |
VCC (V)
147
2535J–AVR–08/10
19.8Internal Oscillator Speed
Figure 19-50. Calibrated 9.6 MHz RC Oscillator Frequency vs. Temperature
CALIBRATED 9.6 MHz RC OSCILLATOR FREQUENCY vs. TEMPERATURE
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10.3 |
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10.1 |
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9.9 |
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9.7 |
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(MHz) |
9.5 |
5.5 V |
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RC |
9.3 |
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F |
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4.5 V |
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9.1 |
2.7 V |
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8.9 |
1.8 V |
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8.7 |
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8.5 |
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-60 |
-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
100 |
Temperature (C)
Figure 19-51. Calibrated 9.6 MHz RC Oscillator Frequency vs. VCC
CALIBRATED 9.6 MHz RC OSCILLATOR FREQUENCY vs. VCC
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11 |
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10.5 |
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10 |
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85 |
˚C |
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(MHz) |
9.5 |
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25 |
˚C |
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RC |
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-40 |
˚C |
F |
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9 |
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8.5 |
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8 |
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1.5 |
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
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VCC (V)
148 ATtiny13
2535J–AVR–08/10
ATtiny13
Figure 19-52. Calibrated 9.6 MHz RC Oscillator Frequency vs. Osccal Value
CALIBRATED 9.6MHz RC OSCILLATOR FREQUENCY vs. OSCCAL VALUE
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18 |
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16 |
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25 ˚C |
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14 |
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(MHz) |
12 |
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10 |
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RC |
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F |
8 |
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6 |
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4 |
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2 |
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0 |
8 |
16 |
24 |
32 |
40 |
48 |
56 |
64 |
72 |
80 |
88 |
96 |
104 |
112 |
120 |
OSCCAL VALUE
Figure 19-53. Calibrated 4.8 MHz RC Oscillator Frequency vs. Temperature
CALIBRATED 4.8 MHz RC OSCILLATOR FREQUENCY vs. TEMPERATURE
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5.1 |
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5 |
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4.9 |
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(MHz) |
4.8 |
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RC |
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F |
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1.8 V |
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4.7 |
5.5 V |
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4.6 |
4.0 V |
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2.7 V |
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4.5 |
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-60 |
-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
100 |
Temperature (C)
149
2535J–AVR–08/10
Figure 19-54. Calibrated 4.8 MHz RC Oscillator Frequency vs. VCC
CALIBRATED 4.8 MHz RC OSCILLATOR FREQUENCY vs. VCC
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5.2 |
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85 |
˚C |
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5 |
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(MHz) |
4.8 |
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25 |
˚C |
RC |
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F |
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-40 |
˚C |
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4.6 |
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4.4 |
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1.5 |
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
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VCC (V)
Figure 19-55. Calibrated 4.8 MHz RC Oscillator Frequency vs. Osccal Value
CALIBRATED 4.8 MHz RC OSCILLATOR FREQUENCY vs. OSCCAL VALUE
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10 |
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9 |
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25 ˚C |
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8 |
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7 |
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(MHz) |
6 |
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RC |
5 |
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F |
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4 |
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3 |
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2 |
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1 |
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0 |
8 |
16 |
24 |
32 |
40 |
48 |
56 |
64 |
72 |
80 |
88 |
96 |
104 |
112 |
120 |
127 |
OSCCAL VALUE
150 ATtiny13
2535J–AVR–08/10
ATtiny13
Figure 19-56. 128 kHz Watchdog Oscillator Frequency vs. VCC
128 kHz WATCHDOG OSCILLATOR FREQUENCY vs. VCC
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120 |
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-40 |
˚C |
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115 |
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(kHz) |
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25 |
˚C |
110 |
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RC |
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F |
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105 |
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85 |
˚C |
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100 |
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1.5 |
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
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VCC (V)
Figure 19-57. 128 kHz Watchdog Oscillator Frequency vs. Temperature
128 kHz WATCHDOG OSCILLATOR FREQUENCY vs. TEMPERATURE
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118 |
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116 |
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114 |
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112 |
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(kHz) |
110 |
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1.8 V |
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RC |
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108 |
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2.7 V |
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F |
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106 |
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4.0 V |
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5.5 V |
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104 |
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102 |
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100 |
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-60 |
-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
100 |
Temperature (C)
151
2535J–AVR–08/10