Datasheet

DocID022152 Rev 8 79/202
STM32F405xx, STM32F407xx Electrical characteristics
5.3 Operating conditions
5.3.1 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.
240
mA
I
VSS
Total current out of V
SS
ground lines (sink)
(1)
240
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 5.3.21: 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
Symbol Parameter Conditions Min Typ Max Unit
f
HCLK
Internal AHB clock frequency
VOS bit in PWR_CR register = 0
(1)
0 - 144
MHz
VOS bit in PWR_CR register= 1 0 - 168
f
PCLK1
Internal APB1 clock frequency - 0 - 42
f
PCLK2
Internal APB2 clock frequency - 0 - 84
V
DD
Standard operating voltage - 1.8
(2)
-3.6V
V
DDA
(3)(4)
Analog operating voltage
(ADC limited to 1.2 M samples)
Must be the same potential as
V
DD
(5)
1.8
(2)
-2.4
V
Analog operating voltage
(ADC limited to 1.4 M samples)
2.4 - 3.6
V
BAT
Backup operating voltage - 1.65 - 3.6 V