STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static Electrical Characteristics (continued)
Characteristics noted under conditions 16 V ≤ B+ ≤ 34 V, 0°C ≤ TA ≤ 70°C, and 0°C ≤ TJ ≤ 100°C unless otherwise noted.
Typical values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
Supervisor Circuitry
Minimum Function B+ for Charge Pump, Oscillator Up
Reset/Fault Registers Valid (10)
B+
V
V
9.0
2.0
–
–
–
–
Minimum Function V for RST Operational
5.0
V
5.0 RST
RST V ≤ 0.05 V @ 1.0 mA (10)
OL
Minimum Function V for RST Operational
3.3
V
V
3.3 RST
RST V ≤ 0.05 V @ 1.0 mA (10)
2.0
–
–
–
OL
RST Low Voltage (11)
V
V
V
OL
I
≤ 5.0 mA
0.1
0.25
RST
RST V Threshold
5.0
V
V
Rising
Falling
V
–
4.65
4.6
4.75
4.70
5.0
5.0
5.0 t+
V
4.5
5.0 –
t
RST Hysteresis for V
V
10
50
–
mV
V
5.0
HYSV5.0
RST V
V
Threshold
3.3
Rising
V
–
2.9
2.9
3.15
3.0
3.3
3.3t+
V
Falling
V
2.8
3.3
–
3.3t
RST Hysteresis for V
V
10
15
–
mV
3.3
HYS_3.3
RST V
V
Threshold
%V
CORE
CORE_
NOM
Falling
V
85
–
86
10
90
–
CORE
CORE
RST Hysteresis for V
V
mV
CORE
HYS CORE
Overtemperature Junction Temperature(12)
T
°C
J(OVER)
T Rising
J
140
–
–
Overtemperature Hysteresis(12)
T
°C
J(HYS)
T Falling
J
10
–
–
30
Thermal Warning (12)
T
T -30
J
T -20
J
°C
W
B+ Undervoltage Threshold to Assert RST
B+(FAULT)
V
V
= +5.0 V, B+ Falling
12
12.75
1.5
13.5
2.0
5.0
B+ Undervoltage Threshold Hysteresis(13)
Minimum B+ Necessary to Clear B+ Fault
B+
1.0
V
V
FAULT(HYS)
RECOVERY
B+
V
= +5.0 V, B+ Rising
–
–
15.25
5.0
Notes
10. If any of these conditions for this not is true, then RST is activated until all operating conditions are met.
11. The RST terminal uses an external pull-up, which may be to 5.0 V or 3.3 V.
12. Guaranteed by design.
13. Alternately, the minimum B+ fault threshold voltage must not be lower than 12 V, and the B+ fault clear voltage must not be higher than
15.25 V. The hysteresis may be greater than 2.0 V if this requirement is met.
34921
Analog Integrated Circuit Device Data
Freescale Semiconductor
11
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