Datasheet

STM8AF52/62xx, STM8AF51/61xx Electrical characteristics
Doc ID 14395 Rev 9 57/110
10.1.5 Pin input voltage
The input voltage measurement on a pin of the device is described in Figure 9.
Figure 9. Pin input voltage
10.2 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
STM8A pin
Table 22. Voltage characteristics
Symbol Ratings Min Max Unit
V
DDx
- V
SS
Supply voltage (including V
DDA and
V
DDIO
)
(1)
1. All power (V
DD
, V
DDIO
, V
DDA
) and ground (V
SS
, V
SSIO
, V
SSA
) pins must always be connected to the
external power supply
-0.3 6.5 V
V
IN
Input voltage on true open drain pins (PE1, PE2)
(2)
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
V
SS
- 0.3 6.5
V
Input voltage on any other pin
(2)
V
SS
- 0.3 V
DD
+ 0.3
|V
DDx
- V
DD
| Variations between different power pins — 50
mV
|V
SSx
- V
SS
| Variations between all the different ground pins — 50
V
ESD
Electrostatic discharge voltage
see Absolute maximum ratings
(electrical sensitivity) on
page 85