Datasheet

Electrical characteristics ST7LITE20F2 ST7LITE25F2 ST7LITE29F2
120/170 DocID8349 Rev 7
1. All power (V
DD
) and ground (V
SS
) lines must always be connected to the external supply.
2. 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.
3. Negative injection disturbs the analog performance of the device. In particular, it induces leakage currents throughout the
device including the analog inputs. To avoid undesirable effects on the analog functions, care must be taken:
- Analog input pins must have a negative injection less than 0.8 mA (assuming that the impedance of the analog voltage is
lower than the specified limits)
- Pure digital pins must have a negative injection less than 1.6mA. In addition, it is recommended to inject the current as far
as possible from the analog input pins.
4. No negative current injection allowed on PB0 and PB1 pins.
5. When several inputs are submitted to a current injection, the maximum ΣI
INJ(PIN)
is the absolute sum of the positive and
negative injected currents (instantaneous values). These results are based on characterization with ΣI
INJ(PIN)
maximum
current injection on four I/O port pins of the device.
Table 59. Thermal characteristics
Symbol Ratings Value Unit
T
STG
Storage temperature range -65 to +150 °C
T
J
Maximum junction temperature
(1)
−−
1. (seeTable 90: Thermal characteristics)