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ATmega8515(L)

Internal Oscillator Speed

Figure 136. Watchdog Oscillator Frequency vs. Temperature

WATCHDOG OSCILLATOR FREQUENCY vs. TEMPERATURE

	1300
	1250
								5.5V
(kHz)	1200							5.0V
WDT	1200							5.0V
WDT
F								4.5V
								4.5V
	1150							4.0V
	1150
								3.3V
								3.0V
								2.7V
	1100
	-50	-30	-10	10	30	50	70	90

Temp (˚C)

Figure 137. Watchdog Oscillator Frequency vs. VCC

WATCHDOG OSCILLATOR FREQUENCY vs. VCC

	1300
								-40°C
	1250							25°C
	1250
								85°C
(kHz)	1200
RC	1200
RC
F
	1150
	1100
	2	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

227

2512G–AVR–03/05

Figure 138. Calibrated 8 MHz RC Oscillator Frequency vs. Temperature

CALIBRATED 8 MHz RC OSCILLATOR FREQUENCY vs. TEMPERATURE

	9
	8.5
	8
(MHz)									5.5V
(MHz)	7.5
RC									4.0V
F
	7
									2.7V
	6.5
	6
	-60	-40	-20	0	20	40	60	80	100

Temp (˚C)

Figure 139. Calibrated 8 MHz RC Oscillator Frequency vs. VCC

CALIBRATED 8 MHz RC OSCILLATOR FREQUENCY vs. VCC

	9
	8.5
							-40°C
	8						25°C
(MHz)							85°C
(MHz)	7.5
RC
F
	7
	6.5
	6
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

228 ATmega8515(L)

2512G–AVR–03/05

ATmega8515(L)

Figure 140. Calibrated 8 MHz RC Oscillator Frequency vs. Osccal Value

CALIBRATED 8 MHz RC OSCILLATOR FREQUENCY vs. OSCCAL VALUE

	16
	14
	12
(MHz)	10
RC
F
	8
	6
	4
	0	16	32	48	64	80	96	112	128	144	160	176	192	208	224	240

OSCCAL VALUE

Figure 141. Calibrated 4 MHz RC Oscillator Frequency vs. Temperature

CALIBRATED 4 MHz RC OSCILLATOR FREQUENCY vs. TEMPERATURE

	4.2
	4.1
	4
(MHz)									5.5V
	3.9

RC	3.8
F	3.8								4.0V
									4.0V
	3.7
	3.6								2.7V
									2.7V
	3.5
	-60	-40	-20	0	20	40	60	80	100

Temp (˚C)

229

2512G–AVR–03/05

Figure 142. Calibrated 4 MHz RC Oscillator Frequency vs. VCC

CALIBRATED 4 MHz RC OSCILLATOR FREQUENCY vs. VCC

	4.2
	4.1						-40°C
	4						25°C
	4
	3.9						85°C
(MHz)	3.9
(MHz)	3.8
RC
F	3.7
	3.7
	3.6
	3.5
	3.4
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 143. Calibrated 4 MHz RC Oscillator Frequency vs. Osccal Value

CALIBRATED 4 MHz RC OSCILLATOR FREQUENCY vs. OSCCAL VALUE

	8
	7
	6
(MHz)	5
RC
F
	4
	3
	2
	0	16	32	48	64	80	96	112	128	144	160	176	192	208	224	240

OSCCAL VALUE

230 ATmega8515(L)

2512G–AVR–03/05

ATmega8515(L)

Figure 144. Calibrated 2 MHz RC Oscillator Frequency vs. Temperature

CALIBRATED 2 MHz RC OSCILLATOR FREQUENCY vs. TEMPERATURE

	2.15
	2.1
	2.05
(MHz)	2
	1.95								5.5V
	1.95
RC
F	1.9
	1.9
									4.0V
	1.85
	1.8								2.7V
	1.8
	1.75
	-60	-40	-20	0	20	40	60	80	100

Temp (˚C)

Figure 145. Calibrated 2 MHz RC Oscillator Frequency vs. VCC

CALIBRATED 2 MHz RC OSCILLATOR FREQUENCY vs. VCC

	2.1
	2.05						-40°C
	2.05
	2						25°C
	2
	1.95						85°C
(MHz)	1.95
(MHz)	1.9
RC
F	1.85
	1.85
	1.8
	1.75
	1.7
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

231

2512G–AVR–03/05

Figure 146. Calibrated 2 MHz RC Oscillator Frequency vs. Osccal Value

CALIBRATED 2 MHz RC OSCILLATOR FREQUENCY vs. OSCCAL VALUE

	4
	3.5
	3
(MHz)	2.5
RC
F
	2
	1.5
	1
	0	16	32	48	64	80	96	112	128	144	160	176	192	208	224	240

OSCCAL VALUE

Figure 147. Calibrated 1 MHz RC Oscillator Frequency vs. Temperature

CALIBRATED 1 MHz RC OSCILLATOR FREQUENCY vs. TEMPERATURE

	1.1
	1.05
(MHz)	1
									5.5V

RC									4.0V
F	0.95								4.0V
	0.95
									2.7V
	0.9
	0.85
	-60	-40	-20	0	20	40	60	80	100

Temp (˚C)

232 ATmega8515(L)

2512G–AVR–03/05

ATmega8515(L)

Figure 148. Calibrated 1 MHz RC Oscillator Frequency vs. VCC

CALIBRATED 1 MHz RC OSCILLATOR FREQUENCY vs. VCC

	1.1
	1.05
							-40°C
(MHz)	1						25°C
	1
							85°C

RC
F	0.95
	0.95
	0.9
	0.85
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 149. Calibrated 1 MHz RC Oscillator Frequency vs. Osccal Value

CALIBRATED 1 MHz RC OSCILLATOR FREQUENCY vs. OSCCAL VALUE

	2
	1.75
	1.5
(MHz)	1.25
RC
F
	1
	0.75
	0.5
	0	16	32	48	64	80	96	112	128	144	160	176	192	208	224	240

OSCCAL VALUE

233

2512G–AVR–03/05

Current Consumption Of

Peripheral Units

Figure 150. Analog Comparator Current vs. VCC

ANALOG COMPARATOR CURRENT vs. VCC

250
200						85°C
						25°C
150						-40°C
(uA)
CC
I
100
50
0
2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 151. Brownout Detector Current vs. VCC

BROWNOUT DETECTOR CURRENT vs. VCC

25
20						-40°C
						-40°C
						25°C
15						85°C
(uA)
CC
I
10
5
0
2.5	3	3.5	4	4.5	5	5.5

VCC (V)

234 ATmega8515(L)

2512G–AVR–03/05

ATmega8515(L)

Current Consumption In

Reset And Reset Pulsewidth

Figure 152. Programming Current vs. VCC

PROGRAMMING CURRENT vs. VCC

	10
	9
							-40°C
	8
	7						25°C
(mA)	6						85°C
							85°C
	5
CC	5
CC
I
	4
	3
	2
	1
	0
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 153. Reset Supply Current vs. VCC (0.1 - 1.0 MHz, Excluding Current Through The Reset Pull-up)

RESET SUPPLY CURRENT vs. VCC

0.1 - 1.0 MHz, EXCLUDING CURRENT THROUGH THE RESET PULLUP

	3
	2.5										5.5V
	2.5
											5.0V
	2										4.5V
											4.5V
(mA)	1.5										4.0V
(mA)	1.5
CC											3.3V
I											3.3V
											3.0V
	1										2.7V
	0.5
	0
	0	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1
					Frequency (MHz)

235

2512G–AVR–03/05

Figure 154. Reset Supply Current vs. VCC (1 - 20 MHz, Excluding Current Through The

Reset Pull-up)

RESET SUPPLY CURRENT vs. VCC

1 - 20 MHz, EXCLUDING CURRENT THROUGH THE RESET PULLUP

	20
	18										5.5V
	16										5.0V
											5.0V
	14										4.5V
											4.5V
(mA)	12
(mA)	10									4.0V
CC										4.0V
I	8
	8
	6								3.3V
	6
	4						3.0V
	4
	2					2.7V
	2
	0
	0	2	4	6	8	10	12	14	16	18	20

Frequency (MHz)

Figure 155. Reset Pulse Width vs. VCC

RESET PULSE WIDTH vs. VCC

	1200
	1000
(ns)	800
(ns)
Pulsewidth	600
							85°C
	400						25°C
	400						25°C
							-40°C
	200
	0
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

236 ATmega8515(L)

2512G–AVR–03/05

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