Datasheet

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STM32F20xxx Electrical characteristics
177
6.3 Operating conditions
6.3.1 General operating conditions
Table 12. Current characteristics
Symbol Ratings Max. Unit
I
VDD
Total current into V
DD
power lines (source)
(1)
1. All main power (V
DD
, V
DDA
) and ground (V
SS
, V
SSA
) pins must always be connected to the external power
supply, in the permitted range.
120
mA
I
VSS
Total current out of V
SS
ground lines (sink)
(1)
120
I
IO
Output current sunk by any I/O and control pin 25
Output current source by any I/Os and control pin 25
I
INJ(PIN)
(2)
2. Negative injection disturbs the analog performance of the device. See note in Section 6.3.20: 12-bit ADC
characteristics.
Injected current on five-volt tolerant I/O
(3)
3. Positive injection is not possible on these I/Os. A negative injection is induced by V
IN
<V
SS
. I
INJ(PIN)
must
never be exceeded. Refer to Table 11 for the values of the maximum allowed input voltage.
–5/+0
Injected current on any other pin
(4)
4. A positive injection is induced by V
IN
>V
DD
while a negative injection is induced by V
IN
<V
SS
. I
INJ(PIN)
must
never be exceeded. Refer to Table 11 for the values of the maximum allowed input voltage.
±5
ΣI
INJ(PIN)
(4)
Total injected current (sum of all I/O and control pins)
(5)
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).
±25
Table 13. Thermal characteristics
Symbol Ratings Value Unit
T
STG
Storage temperature range 65 to +150 °C
T
J
Maximum junction temperature 125 °C
Table 14. General operating conditions
(1)
Symbol Parameter Conditions Min Max Unit
f
HCLK
Internal AHB clock frequency 0 120
MHzf
PCLK1
Internal APB1 clock frequency 0 30
f
PCLK2
Internal APB2 clock frequency 0 60
V
DD
Standard operating voltage 1.8
(2)
3.6 V
V
DDA
(3)
Analog operating voltage
(ADC limited to 1 M samples)
Must be the same potential as
V
DD
(4)
1.8
(2)
3.6
V
Analog operating voltage
(ADC limited to 2 M samples)
2.4 3.6