參數(shù)資料
型號(hào)： ST72171
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(shí)器SPGAS（軟件可編程增益放大器）。運(yùn)放
文件頁(yè)數(shù)： 82/93頁(yè)
文件大?。?/td> 915K
代理商： ST72171
82/93
ST72E121 ST72T121
7 ELECTRICAL CHARACTERISTICS
7.1 ABSOLUTE MAXIMUM RATINGS
This product contains devices to protect the inputs
against damage due to high static voltages, how-
ever it is advisable to take normal precaution to
avoid application of any voltage higher than the
specified maximum rated voltages.
For proper operation it is recommended that V
I
and V
O
be higher than V
SS
and lower than V
DD
.
Reliability is enhanced if unused inputs are con-
nected to an appropriate logic voltage level (V
DD
or V
SS
).
Power Considerations
.The average chip-junc-
tion temperature, T
J
, in Celsius can be obtained
from:
T
J
=
TA + PD x RthJA
Where: T
A
=
Ambient Temperature.
RthJA = Package thermal resistance
(junction-to ambient).
P
D
=
P
INT
+ P
PORT
.
P
INT
=
I
DD
x V
DD
(chip internal power).
P
PORT
=Port power dissipation
determined by the user)
Note:
Stresses above those listed as “absolute maximum ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at these conditions is not implied. Exposure to maximum
rating conditions for extended periods may affect device reliability.
Symbol
V
DD
V
DDA
V
I
Parameter
Value
-0.3 to 6.0
Unit
V
V
V
Digital Supply Voltage
Analog Supply and Reference Voltage
Input Voltage
V
DD
- 0.3 to V
DD
+ 0.3
V
SS
- 0.3 to V
DD
+ 0.3
V
SS
- 0.3 to V
DD
+ 0.3
V
SSA
-0.3 to V
DDA
+0.3
V
SS
- 0.3 to V
DD
+ 0.3
100
100
150
-60 to 150
V
AI
Analog Input Voltage (A/D Converter)
V
V
O
IV
DD
IV
SS
T
J
T
STG
Output Voltage
Total Current into V
DD
(source)
Total Current out of V
SS
(sink)
Junction Temperature
Storage Temperature
V
mA
mA
°C
°C
82
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