MC33164 Просмотр технического описания (PDF) - Motorola => Freescale
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MC33164 Datasheet PDF : 8 Pages
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MC34164 MC33164
Figure 9. MC3X164–3 Reset Output
Saturation versus Sink Current
4.0
Vin = 2.4 V
3.0
2.0 TA = 25°C
TA = 70°C
TA = 0°C
TA = 25°C
TA = 0°C
1.0
TA = 70°C
0
0
4.0
8.0
12
16
20
VSink, SINK CURRENT (mA)
Figure 10. MC3X164–5 Reset Output
Saturation versus Sink Current
4.0
Vin, Reset = 4 V
3.0
TA = 25°C
TA = 70°C
TA = 0°C
TA = 25°C
2.0
TA = 0°C
1.0
TA = 70°C
0
0
4.0
8.0
12
16
20
ISink, SINK CURRENT (mA)
Figure 11. Clamp Diode Forward Current
versus Voltage
32
24
Vin = 0 V
TA = 25°C
16
8.0
0
0
0.4
0.8
1.2
1.6
VF , FORWARD VOLTAGE (V)
Figure 12. Reset Delay Time
(MC3X164–5 Shown)
Reset
90%
Vin
5.0 V
4.0 V
Vin
5.0V
10 4.0V
%
Ref
Vin = 5.0 V to 4.0 V
RL = 43 k
TA = 25°C
43k
Reset
5.0 µs/DIV
Figure 13. Low Voltage Microprocessor Reset
2 (2)
Power
Supply
R
Reset
1 (1)
CDLY
Microprocessor
Circuit
1.2 Vref
3 (4)
ǒ tDLY = RCDLY In
1–
1
Ǔ Vth(MPU)
Vin
A time delayed reset can be accomplished with the addition of CDLY. For systems with extremely fast power
supply rise times (< 500 ns) it is recommended that the RCDLY time constant be greater than 5.0 µs. Vth(MPU) is
the microprocessor reset input threshold.
MOTOROLA ANALOG IC DEVICE DATA
5
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