參數資料
型號： ST72C171K2
廠商： 意法半導體
英文描述： 8-BIT MCU WITH 8K FLASH. ADC. WDG. SPI. SCI. TIMERS SPGAS (SOFTWARE PROGRAMMABLE GAIN AMPLIFIERS). OP-AMP
中文描述： 8位8K閃存微控制器。 ADC的。水分散粒劑。的SPI。脊髓損傷。定時器SPGAS（軟件可編程增益放大器）。運放
文件頁數： 115/152頁
文件大?。?/td> 1384K
代理商： ST72C171K2
ST72C171
115/152
OPERATING CONDITIONS
(Cont’d)
9.3.2 Operating Conditions with Low Voltage Detector (LVD)
Subject to general operating conditions for V
DD
, f
OSC
, and T
A
.
Figure 60. High LVD Threshold Versus V
DD
and f
OSC
for FLASH devices
3)
Figure 61. Medium LVD Threshold Versus V
DD
and f
OSC
for FLASH devices
3)
Figure 62. Low LVD Threshold Versus V
DD
and f
OSC
for FLASH devices
2)4)
Notes:
1.
LVD typical data are based on T
A
=25°C. They are given only as design guidelines and are not tested.
2. Data based on characterization results, not tested in production.
3. The V
DD
rise time rate condition is needed to insure a correct device power-on and LVD reset. Not tested in production.
4. If the low LVD threshold is selected, when V
falls below 3.2V, (V
minimum operating voltage), the device is guar-
anteed to continue functioning until it goes into reset state. The specified V
min. value is necessary in the device power
on phase, but during a power down phase or voltage drop the device will function below this min. level.
Symbol
Parameter
Conditions
Min
4.10
2)
3.75
2)
3.25
2)
3.85
2)
3.50
2)
3.00
200
0.2
Typ
1)
4.30
3.90
3.35
4.05
3.65
3.10
250
Max
4.50
4.05
3.45
4.25
3.80
3.20
300
50
40
Unit
V
IT+
Reset release threshold
(V
DD
rise)
High Threshold
Med. Threshold
Low Threshold
High Threshold
Med. Threshold
Low Threshold
4)
V
IT+
-V
IT-
V
V
IT-
Reset generation threshold
(V
DD
fall)
V
hyst
Vt
POR
t
g(VDD)
LVD voltage threshold hysteresis
V
DD
rise time rate
3)
Filtered glitch delay on V
DD 2)
mV
V/ms
ns
Not detected by the LVD
f
OSC
[MHz]
SUPPLY VOLTAGE [V]
16
8
0
2.5
3
3.5
4
4.5
5
5.5
FUNCTIONAL AREA
DEVICE UNDER
FUNCTIONALITY AND RESET NOT GUARANTEED IN THIS AREA
FOR TEMPERATURES HIGHER THAN 85°C
RESET
IN THIS AREA
FUNCTIONALITY
NOT GUARANTEED
IN THIS AREA
V
IT-
≥
3.85
f
OSC
[MHz]
SUPPLY VOLTAGE [V]
16
8
0
2.5
3
V
IT-
≥
3.5V
4
4.5
5
5.5
FUNCTIONAL AREA
DEVICE UNDER
FUNCTIONALITY AND RESET NOT GUARANTEED IN THIS AREA
FOR TEMPERATURES HIGHER THAN 85°C
RESET
IN THIS AREA
FUNCTIONALITY
NOT GUARANTEED
IN THIS AREA
f
OSC
[MHz]
SUPPLY VOLTAGE [V]
16
8
0
2.5
V
IT-
≥
3
3.5
4
4.5
5
5.5
FUNCTIONAL AREA
DEVICE UNDER
FUNCTIONALITY NOT GUARANTEED IN THIS AREA
FOR TEMPERATURES HIGHER THAN 85°C
RESET
IN THIS AREA
FUNCTIONALITY
NOT GUARANTEED
IN THIS AREA
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