ADC Characteristics – Preliminary Data
Table 63. |
ADC Characteristics |
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Symbol |
Parameter |
Condition |
Min(1) |
Typ(1) |
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Max(1) |
Units |
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Resolution |
Single Ended Conversion |
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10 |
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Bits |
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Differential Conversion |
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Gain = 1x or 20x |
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8 |
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Bits |
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Single Ended Conversion |
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Absolute Accuracy |
VREF = 4V |
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1 |
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TBD |
LSB |
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ADC clock = 200 kHz |
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ADHSM = 0 |
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Single Ended Conversion |
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VREF = 4V |
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TBD |
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TBD |
LSB |
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ADC clock = 1 MHz |
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ADHSM = 1 |
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Integral Non-linearity |
VREF = 4V |
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0.5 |
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LSB |
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Differential Non-linearity |
VREF = 4V |
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0.5 |
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LSB |
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Zero Error (Offset) |
VREF = 4V |
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1 |
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LSB |
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Conversion Time |
Free Running Conversion |
65 |
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260 |
µs |
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ADHSM = 0 |
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Free Running Conversion |
65 |
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TBD |
µs |
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ADHSM = 1 |
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Clock Frequency |
ADHSM = 0 |
50 |
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200 |
kHz |
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ADHSM = 1 |
50 |
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TBD |
kHz |
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AV |
CC |
Analog Supply Voltage |
|
V - 0.3(2) |
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V |
CC |
+ 0.3(3) |
V |
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CC |
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VREF |
Reference Voltage |
Single Ended Conversion |
2.0 |
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AVCC |
V |
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Differential Conversion |
2.0 |
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AVCC - 0.2 |
V |
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VIN |
Input Voltage |
Single ended channels |
GND |
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VREF |
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Differential channels |
TBD |
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TBD |
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Input Bandwidth |
Single ended channels |
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TBD |
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kHz |
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Differential channels |
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4 |
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kHz |
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VINT |
Internal Voltage Reference |
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2.3 |
2.56 |
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2.7 |
V |
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RREF |
Reference Input Resistance |
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TBD |
TBD |
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TBD |
kΩ |
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RAIN |
Analog Input Resistance |
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TBD |
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MΩ |
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IHSM |
Increased Current Consumption in High- |
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TBD |
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µA |
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speed mode (ADHSM=1) |
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Notes: 1. Values aren guidelines only. Actual values are TBD.
2.Minimum for AVCC is 2.7V.
3.Maximum for AVCC is 5.5V.
128 ATtiny26(L)
1477B–AVR–04/02
ATtiny26 Typical
Characteristics –
Preliminary Data
1477B–AVR–04/02
ATtiny26(L)
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.
129
Figure 71. RC Oscillator Frequency vs. Temperature (the devices are calibrated to 1 MHz at Vcc = 5V, T=25c)
CALIBRATED 1MHz RC OSCILLATOR FREQUENCY
vs. TEMPERATURE
|
1.04 |
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1.02 |
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1 |
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Vcc = 5.5V |
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(MHz) |
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Vcc = 5.0V |
0.98 |
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Vcc = 4.5V |
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Rc |
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Vcc = 4.0V |
F |
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0.96 |
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Vcc = 3.6V |
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0.94 |
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Vcc = 3.3V |
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Vcc = 3.0V |
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0.92 |
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Vcc = 2.7V |
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-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
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Ta(˚C) |
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Figure 72. RC Oscillator Frequency vs. Operating Voltage (the devices are calibrated to 1 MHz at Vcc = 5V, T=25c)
CALIBRATED 1MHz RC OSCILLATOR FREQUENCY
vs. OPERATING VOLTAGE
|
1.04 |
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1.02 |
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TA = -40˚C |
TA = -10˚C |
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TA = 25˚C |
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TA = 45˚C |
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1 |
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TA = 70˚C |
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(MHz) |
0.98 |
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TA = 85˚C |
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Rc |
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F |
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0.96 |
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0.94 |
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0.92 |
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2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
Vcc(V)
130 ATtiny26(L)
1477B–AVR–04/02
ATtiny26(L)
Figure 73. RC Oscillator Frequency vs Temperature (the devices are calibrated to 2 MHz at Vcc = 5V, T=25c)
CALIBRATED 2MHz RC OSCILLATOR FREQUENCY
vs. TEMPERATURE
|
2.1 |
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2.05 |
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2 |
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Vcc = 5.5V |
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(MHz) |
1.95 |
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Vcc = 5.0V |
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Vcc |
= 4.5V |
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Rc |
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F |
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Vcc = 4.0V |
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1.9 |
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Vcc = 3.6V |
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1.85 |
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Vcc = 3.3V |
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Vcc |
= 3.0V |
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Vcc = 2.7V |
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1.8 |
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-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
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Ta(˚C) |
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Figure 74. RC Oscillator Frequency vs. Operating Voltage (the devices are calibrated to 2 MHz at Vcc = 5V, T=25c)
CALIBRATED 2MHz RC OSCILLATOR FREQUENCY
vs. OPERATING VOLTAGE
|
2.1 |
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2.05 |
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TA = -40˚C |
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TA = -10˚C |
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TA = 25˚C |
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2 |
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TA = 45˚C |
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TA = 70˚C |
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(MHz) |
1.95 |
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TA = 85˚C |
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Rc |
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F |
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1.9 |
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1.85 |
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1.8 |
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2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
Vcc(V)
131
1477B–AVR–04/02
Figure 75. RC Oscillator Frequency vs Temperature (the devices are calibrated to 4 MHz at Vcc = 5V, T=25c)
CALIBRATED 4MHz RC OSCILLATOR FREQUENCY
vs. TEMPERATURE
|
4.1 |
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4.05 |
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4 |
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3.95 |
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Vcc = 5.5V |
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3.9 |
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Vcc = 5.0V |
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Vcc = 4.5V |
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(MHz) |
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3.85 |
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Vcc = 4.0V |
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Rc |
3.8 |
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F |
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Vcc = 3.6V |
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3.75 |
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Vcc = 3.3V |
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3.7 |
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Vcc = 3.0V |
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3.65 |
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Vcc = 2.7V |
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3.6 |
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-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
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Ta(˚C) |
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Figure 76. RC Oscillator Frequency vs. Operating Voltage (the devices are calibrated to 4 MHz at Vcc = 5V, T=25c)
Rc
F (MHz)
CALIBRATED 4MHz RC OSCILLATOR FREQUENCY vs. OPERATING VOLTAGE
4.1
4.05 |
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TA = -40˚C |
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TA = -10˚C |
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TA = 25˚C |
4 |
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TA = 45˚C |
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TA = 70˚C |
3.95 |
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3.9 |
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TA = 85˚C |
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3.85 |
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3.8 |
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3.75 |
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3.7 |
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3.65 |
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3.6 |
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2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
Vcc(V)
132 ATtiny26(L)
1477B–AVR–04/02
ATtiny26(L)
Figure 77. RC Oscillator Frequency vs. Temperature (the devices are calibrated to 8
MHz at Vcc = 5V, T=25c)
CALIBRATED 8MHz RC OSCILLATOR FREQUENCY
vs. TEMPERATURE
|
8.4 |
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8.2 |
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8 |
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7.8 |
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Vcc = 5.5V |
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Vcc = 5.0V |
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(MHz) |
7.6 |
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Vcc = 4.5V |
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V = 4.0V |
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Rc |
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cc |
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F |
7.4 |
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Vcc = 3.6V |
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7.2 |
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Vcc = 3.3V |
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Vcc = 3.0V |
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7 |
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Vcc = 2.7V |
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6.8 |
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-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
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Ta(˚C) |
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Figure 78. RC Oscillator Frequency vs. Operating Voltage (the devices are calibrated to 8 MHz at Vcc = 5V, T=25c)
CALIBRATED 8MHz RC OSCILLATOR FREQUENCY
vs. OPERATING VOLTAGE
|
8.4 |
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TA = -40˚C |
|
8.2 |
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TA = -10˚C |
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TA = 25˚C |
|
8 |
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TA = 45˚C |
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TA = 70˚C |
|
7.8 |
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TA = 85˚C |
(MHz) |
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7.6 |
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Rc |
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F |
7.4 |
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7.2 |
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7 |
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6.8 |
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2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
133
1477B–AVR–04/02
Figure 79. RC Oscillator Frequency vs. Temperature (the devices are calibrated to 1 MHz at Vcc = 5V, T=25c)
CALIBRATED 1MHz RC OSCILLATOR FREQUENCY
vs. TEMPERATURE
|
1.03 |
|
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1.02 |
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1.01 |
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1 |
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Vcc |
= 5.5V |
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||
|
0.99 |
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Vcc = 5.0V |
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||
(MHz) |
0.98 |
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0.97 |
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Vcc = 4.5V |
||
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Rc |
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Vcc |
= 4.0V |
F |
0.96 |
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||
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0.95 |
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Vcc = 3.6V |
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Vcc = 3.3V |
||
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0.94 |
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Vcc |
= 3.0V |
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|
0.93 |
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Vcc |
= 2.7V |
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||
|
0.92 |
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-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
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Ta(˚C) |
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|
Figure 80. RC Oscillator Frequency vs. Operating Voltage (the devices are calibrated to 1 MHz at Vcc = 5V, T=25c)
CALIBRATED 1MHz RC OSCILLATOR FREQUENCY
vs. OPERATING VOLTAGE
|
1.03 |
|
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1.02 |
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TA = -40˚C |
TA = -10˚C |
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||
|
1.01 |
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TA = 25˚C |
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TA = 45˚C |
|
1 |
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TA = 70˚C |
|
0.99 |
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TA = 85˚C |
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0.98 |
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(MHz) |
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0.97 |
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Rc |
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F |
0.96 |
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0.95 |
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0.94 |
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0.93 |
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0.92 |
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2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
Vcc(V)
134 ATtiny26(L)
1477B–AVR–04/02
ATtiny26(L)
Figure 81. RC Oscillator Frequency vs. Temperature (the devices are calibrated to 2 MHz at Vcc = 5V, T=25c)
CALIBRATED 2MHz RC OSCILLATOR FREQUENCY
vs. TEMPERATURE
|
2.1 |
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2.05 |
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2 |
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Vcc = 5.5V |
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(MHz) |
1.95 |
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Vcc = 5.0V |
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||
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Vcc |
= 4.5V |
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Rc |
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F |
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Vcc = 4.0V |
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1.9 |
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||
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Vcc = 3.6V |
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1.85 |
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Vcc = 3.3V |
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Vcc |
= 3.0V |
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1.8 |
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Vcc = 2.7V |
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-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
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Ta(˚C) |
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Figure 82. RC Oscillator Frequency vs. Operating Voltage (the devices are calibrated to 2 MHz at Vcc = 5V, T=25c)
CALIBRATED 2MHz RC OSCILLATOR FREQUENCY
vs. OPERATING VOLTAGE
|
2.1 |
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2.05 |
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TA = -10˚C |
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TA = -40˚C |
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TA = 25˚C |
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2 |
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TA = 45˚C |
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TA = 70˚C |
|
(MHz) |
1.95 |
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TA = 85˚C |
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||
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Rc |
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F |
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1.9 |
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1.85 |
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1.8 |
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2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
Vcc(V)
135
1477B–AVR–04/02
Figure 83. RC Oscillator Frequency vs. Temperature (the devices are calibrated to 4 MHz at Vcc = 5V, T=25c)
CALIBRATED 4MHz RC OSCILLATOR FREQUENCY
vs. TEMPERATURE
|
4.1 |
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4.05 |
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4 |
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3.95 |
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Vcc = 5.5V |
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Vcc = 5.0V |
||
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|
3.9 |
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Vcc |
= 4.5V |
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||
(MHz) |
3.85 |
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Vcc |
= 4.0V |
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|||
Rc |
3.8 |
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Vcc |
= 3.6V |
F |
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3.75 |
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Vcc = 3.3V |
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3.7 |
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Vcc = 3.0V |
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3.65 |
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Vcc = 2.7V |
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3.6 |
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-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
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Ta(˚C) |
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|
Figure 84. RC Oscillator Frequency vs. Operating Voltage (the devices are calibrated to 4 MHz at Vcc = 5V, T=25c)
Rc
F (MHz)
CALIBRATED 4MHz RC OSCILLATOR FREQUENCY
vs. OPERATING VOLTAGE
4.1
4.05 |
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TA = -40˚C |
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TA = -10˚C |
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4 |
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TA = 25˚C |
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TA = 45˚C |
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3.95 |
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TA = 70˚C |
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3.9 |
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TA = 85˚C |
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3.85 |
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3.8 |
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3.75 |
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3.7 |
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3.65 |
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3.6 |
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2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
Vcc(V)
136 ATtiny26(L)
1477B–AVR–04/02
ATtiny26(L)
Figure 85. RC Oscillator Frequency vs. Temperature (the devices are calibrated to 8
MHz at Vcc = 5V, T=25c)
CALIBRATED 8MHz RC OSCILLATOR FREQUENCY
vs. TEMPERATURE
|
8.5 |
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8.3 |
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8.1 |
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7.9 |
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Vcc |
= 5.5V |
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||
|
7.7 |
|
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|
Vcc = 5.0V |
|
(MHz) |
|
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|
Vcc = 4.5V |
||
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|||
7.5 |
|
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|
Vcc = 4.0V |
||
Rc |
|
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F |
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Vcc |
= 3.6V |
|
7.3 |
|
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||
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|
Vcc = 3.3V |
||
|
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||
|
7.1 |
|
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|
Vcc |
= 3.0V |
|
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||
|
6.9 |
|
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|
|
Vcc |
= 2.7V |
|
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||
|
6.7 |
|
|
|
|
|
|
|
|
-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
|
|
|
|
|
Ta(˚C) |
|
|
|
|
Figure 86. RC Oscillator Frequency vs. Operating Voltage (the devices are calibrated to 8 MHz at Vcc = 5V, T=25c)
CALIBRATED 8MHz RC OSCILLATOR FREQUENCY
vs. OPERATING VOLTAGE
|
8.5 |
|
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|
8.3 |
|
|
|
|
TA = -40˚C |
|
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|
TA = -10˚C |
|
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|
8.1 |
|
|
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|
TA = 25˚C |
|
|
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|
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|
TA = 45˚C |
|
7.9 |
|
|
|
|
|
TA = 70˚C |
|
7.7 |
|
|
|
|
|
TA = 85˚C |
(MHz) |
|
|
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|
|
7.5 |
|
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|
Rc |
|
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F |
|
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7.3 |
|
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|
7.1 |
|
|
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|
6.9 |
|
|
|
|
|
|
|
6.7 |
|
|
|
|
|
|
|
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
Vcc(V)
137
1477B–AVR–04/02