Datasheet

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ST7LITE20F2 ST7LITE25F2 ST7LITE29F2 Electrical characteristics
169
13.3 Operating conditions
13.3.1 General operating conditions
T
A
= -40 to +85 °C unless otherwise specified.
Figure 52. f
CPU
maximum operating frequency versus V
DD
supply voltage
13.3.2 Operating conditions with low voltage detector (LVD)
T
A
= -40 to 85°C, unless otherwise specified
Table 60. General operating conditions
Symbol Parameter Conditions Min Max Unit
V
DD
Supply voltage
f
CPU
= 4 MHz. max. 2.4 5.5
V
f
CPU
= 8 MHz. max. 3.3 5.5
f
CPU
CPU clock frequency
3.3 V≤ V
DD
≤ 5.5 V up to 8
MHz
2.4 V≤ V
DD
<3.3 V up to 4
f
CPU
[MHz]
SUPPLY VOLTAGE [V]
8
4
2
0
2.0 2.4 3.3 3.5 4.0 4.5 5.0
FUNCTIONALITY
NOT GUARANTEED
IN THIS AREA
5.5
FUNCTIONALITY
GUARANTEED
IN THIS AREA
(UNLESS OTHERWISE
STATED IN THE
TABLES OF
PARAMETRIC DATA)
2.7
Table 61. Power on/power down operating conditions
Symbol Parameter Conditions Min Typ Max Unit
V
IT+
(LVD)
Reset release threshold
(V
DD
rise)
High Threshold
Med. Threshold
Low Threshold
4.00
(1)
3.40
(1)
2.65
(1)
4.25
3.60
2.90
4.50
3.80
3.15
V
V
IT-
(LVD)
Reset generation threshold
(V
DD
fall)
High Threshold
Med. Threshold
Low Threshold
3.80
3.20
2.40
4.05
3.40
2.70
4.30
(1)
3.65
(1)
2.90
(1)
V
hys
LVD voltage threshold
hysteresis
V
IT+
(LVD)
-V
IT-
(LVD)
− 200 − mV
Vt
POR
V
DD
rise time rate
(2)
− 20 20000 μs/V
t
g(VDD)
Filtered glitch delay on V
DD
Not detected by the
LVD
−−150 ns
I
DD(LVD
) LVD/AVD current consumption −−220 −μA