Electrical characteristics
Figure 32. Typ. V
DD -
V
OH
@ V
DD
= 3.3 V (high sink ports)
2
1.75
1.5
STM8S207xx, STM8S208xx
-40˚C
25˚C
85˚C
125˚C
V
DD
- V
OH
[V]
1.25
1
0.75
0.5
0.25
0
0
2
4
6
8
10
12
14
I
OL
[mA]
10.3.7
Reset pin characteristics
Subject to general operating conditions for V
DD
and T
A
unless otherwise specified.
Table 41.
Symbol
V
IL(NRST)
V
IH(NRST)
V
OL(NRST)
R
PU(NRST)
t
IFP(NRST)
t
INFP(NRST)
t
OP(NRST)
NRST pin characteristics
Parameter
NRST Input low level voltage
(1)
NRST Input high level voltage
NRST Output low level voltage
NRST Pull-up resistor
(2)
NRST Input filtered pulse
(3)
NRST Input not filtered pulse
NRST output pulse
500
15
I
OL
= 2 mA
30
40
Conditions
Min
-0.3 V
0.7 x V
DD
Typ
1)
Max
0.3 x V
DD
V
DD
+ 0.3
0.5
60
75
kΩ
ns
ns
µs
V
Unit
1. Data based on characterization results, not tested in production.
2. The R
PU
pull-up equivalent resistor is based on a resistive transistor
3.
Data guaranteed by design, not tested in production.
Figure 33. Typical NRST V
IL
and V
IH
vs V
DD
@ 4 temperatures
-40˚C
6
5
4
25˚C
85˚C
125˚C
V
IL
/V
IH
[V]
3
2
1
0
2.5
3
3.5
4
4.5
5
5.5
6
V
DD
[V]
76/103
Doc ID 14733 Rev 9
STMICROELECTRONICS [ STMICROELECTRONICS ]
