Datasheet

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ST7LITE20F2 ST7LITE25F2 ST7LITE29F2 Electrical characteristics
169
Figure 51. Pin input voltage
13.2 Absolute maximum ratings
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 under these
conditions is not implied. Exposure to maximum rating conditions for extended periods may
affect device reliability.
V
IN
ST7 PIN
Table 57. Voltage characteristics
Symbol Ratings Maximum value Unit
V
DD
- V
SS
Supply voltage 7.0
V
V
IN
Input voltage on any pin
(1)
V
SS
- 0.3 to V
DD
+ 0.3
V
ESD(HBM)
Electrostatic discharge voltage (Human Body Model)
see Section 13.7.3:
Absolute maximum
ratings (Electrical
sensitivity)
V
1. Directly connecting the I/O pins to V
DD
or V
SS
could damage the device if an unexpected change of the I/O configuration
occurs (for example, due to a corrupted program counter). To guarantee safe operation, this connection has to be done
through a pull-up or pull-down resistor (typical: 10 kΩ for I/Os). Unused I/O pins must be tied in the same way to V
DD
or V
SS
according to their reset configuration.
I
INJ(PIN)
must never be exceeded. This is implicitly insured if V
IN
maximum is respected. If V
IN
maximum cannot be
respected, the injection current must be limited externally to the I
INJ(PIN)
value. A positive injection is induced by V
IN
>V
DD
while a negative injection is induced by V
IN
<V
SS
. For true open-drain pads, there is no positive injection current, and the
corresponding V
IN
maximum must always be respected.
Table 58. Current characteristics
Symbol Ratings Maximum value Unit
I
VDD
Total current into V
DD
power lines (source)
(1)
100
mA
I
VSS
Total current out of V
SS
ground lines (sink)
(1)
100
I
IO
Output current sunk by any standard I/O and control pin 25
Output current sunk by any high sink I/O pin 50
Output current source by any I/Os and control pin - 25
I
INJ(PIN)
(2) & (3)
Injected current on RESET pin ± 5
Injected current on OSC1 and OSC2 pins ± 5
Injected current on PB0 and PB1 pins
(4)
+5
Injected current on any other pin
(5)
± 5
ΣI
INJ(PIN)
(1)
Total injected current (sum of all I/O and control pins)
(5)
± 20