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22.7High-voltage Serial Programming Characteristics

Figure 22-5. High-voltage Serial Programming Timing

CC

CK

Table 22-8.	High-voltage Serial Programming Characteristics
	TA = 25°C ± 10%, VCC = 5.0V ± 10% (Unless otherwise noted)
Symbol	Parameter	Min	Typ	Max	Units
tSHSL	SCI (PB0) Pulse Width High	110			ns
tSLSH	SCI (PB0) Pulse Width Low	110			ns
tIVSH	SDI (PA6), SII (PB1) Valid to SCI (PB0) High	50			ns
tSHIX	SDI (PA6), SII (PB1) Hold after SCI (PB0) High	50			ns
tSHOV	SCI (PB0) High to SDO (PA4) Valid		16		ns
tWLWH_PFB	Wait after Instr. 3 for Write Fuse Bits		2.5		ms

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23. Typical Characteristics – Preliminary Data

The data contained in this section is largely based on simulations and characterization of similar devices in the same process and design methods. Thus, the data should be treated as indications of how the part will behave.

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.

23.1Active Supply Current

Figure 23-1. Active Supply Current vs. Low Frequency (0.1 - 1.0 MHz)

ACTIVE SUPPLY CURRENT vs. LOW FREQUENCY

ICC (mA)

0.1 - 1.0 MHz

1.4

1.2										5.5 V
1										5.0 V
										4.5 V
0.8										4.0 V
0.6										3.3 V
										2.7 V
0.4										1.8 V
0.2
0
0	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1

Frequency (MHz)

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Figure 23-2. Active Supply Current vs. frequency (1 - 20 MHz)

ACTIVE SUPPLY CURRENT vs. FREQUENCY

1 - 20 MHz

ICC(mA)

16

5.5V

14

5.0V

12

4.5V

10

8
6						4.0V
4						3.3V
2						2.7V
			1.8V
0
0	2	4	6	8	10	12	14	16	18	20

Frequency (MHz)

Figure 23-3. Active Supply Current vs. VCC (Internal RC Oscillator, 8 MHz)

ACTIVE SUPPLY CURRENT vs. VCC

ICC(mA)

INTERNAL RC OSCILLATOR, 8 MHz

	7	25 ˚C
	6	85 ˚C
		-40 ˚C
	5
	4
	3
	2
	1

0

1.5

2

2.5

3

3.5

4

4.5

5

5.5

VCC (V)

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Figure 23-4. Active Supply Current vs. VCC (Internal RC Oscillator, 1 MHz)

ACTIVE SUPPLY CURRENT vs. VCC

INTERNAL RC OSCILLATOR, 1 MHz

ICC(mA)

1.6

85 ˚C

1.4 25 ˚C

-40 ˚C

1.2

1

0.8

0.6

0.4

0.2

0

1.5

2

2.5

3

3.5

4

4.5

5

5.5

VCC (V)

Figure 23-5. Active Supply Current vs. VCC (Internal RC Oscillator, 128 kHz)

ACTIVE SUPPLY CURRENT vs. VCC

ICC(mA)

INTERNAL RC OSCILLATOR, 128 kHz

0.3

0.25	-40	˚C
	25	˚C
0.2	85	˚C
0.15
0.1
0.05

0

1.5

2

2.5

3

3.5

4

4.5

5

5.5

VCC (V)

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