MIC811_U Просмотр технического описания (PDF) - Micrel
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MIC811_U Datasheet PDF : 8 Pages
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MIC811/MIC812 Microprocessor Reset Circuits
Absolute Maximum Ratings
Terminal Voltage
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.0V
MR . . . . . . . . . . . . . . . . . . . . . -0.3V to (VCC + 0.3V)
Input Current, VCC, MR . . . . . . . . . . . . . . . . . . . . 20mA
Output Current, RESET, RESET . . . . . . . . . . . . . .20mA
Rate of Rise, VCC . . . . . . . . . . . . . . . . . . . . . . 100V/µs
Operating Temperature Range
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......
Range
.
.
..
..
.
.
..
..
.
.
..
..
.
.
. . -40°C to 85°C
. . .-65°C to 150°C
Lead Temperature (Soldering - 10 sec.) . . . . . . . . . . . 300°C
Power Dissipation (TA = +70°C) . . . . . . . . . . . . . . . . 320mW
Stresses above those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent device failure. Functionality at or above these limits is not implied. Exposure to absolute
maximum ratings for extended periods may affect device reliability. Operating ranges define those limits between which the functionality of the device is guaranteed.
Electrical Characteristics
VCC = 5V for MIC81-L/M/J, VCC = 3.3V for MIC81-S/T, VCC = 3V for MIC81-R, TA = Operating Temperature Range, unless
otherwise noted.
Parameter
Operating Voltage Range, VCC
Conditions
TA = 0°C to 70°C
TA = -40°C to 85°C
Min
Typ
Max
Units
1.4
5.5
V
1.6
5.5
Supply Current, ICC
MIC811L/M/J, MIC812L/M/J
VCC < 3.6V, MIC811R/S/T, MIC812R/S/T
9
15
µA
6
10
Reset Voltage Threshold, VTH
MIC811L, MIC812L
MIC811M, MIC812M
MIC811J, MIC812J
MIC811T, MIC812T
MIC811S, MIC812S
MIC811R, MIC812R
4.50
4.63
4.75
V
4.25
4.38
4.50
3.89
4.00
4.10
3.00
3.08
3.15
2.85
2.93
3.00
2.55
2.63
2.70
Reset Timeout Period
140
240
560
ms
RESET Output Voltage, VOH
RESET Output Voltage, VOL
ISource = 800µA, MIC811L/M/J
ISource = 500µA, MIC811R/S/T
VCC - 1.5V
0.8 X VCC
VCC=VTH Min., ISink=3.2mA, MIC811L/M/J
VCC=VTH Min., ISink =1.2mA, MIC811R/S/T
VCC>1.4V, ISink =50µA, TA = 0°C to 70°C
VCC>1.6V, ISink =50µA, TA = -40°C to 85°C
V
0.4
V
0.3
0.3
0.3
RESET Output Voltage, VOH
RESET Output Voltage, VOL
MR Minimum Pulse Width
MR to Reset Delay
MR Input Threshold, VIH
MR Input Threshold, VIL
MR Pull-Up Resistance
MR Glitch Immunity
1.8V < VCC < VTH Min.,
ISource = 150µA
ISink=3.2mA, MIC812L/M/J
ISink=1.2mA, MIC812R/S/T
VCC > VTH Max., MIC81_L/M/J
MIC81_R/S/T
VCC > VTH Max., MIC81_L/M_
MIC81_R/S/T
0.8 X VCC
10
2.3
0.7 X VCC
10
V
0.4
V
0.3
µs
0.5
µs
V
0.8
V
0.25 X VCC
20
30
kΩ
100
ns
2
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