Datasheet

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STM32F051x4 STM32F051x6 STM32F051x8 Electrical characteristics
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6.3 Operating conditions
6.3.1 General operating conditions
6.3.2 Operating conditions at power-up / power-down
The parameters given in Table 21 are derived from tests performed under the ambient
temperature condition summarized in Table 20.
Table 20. General operating conditions
Symbol Parameter Conditions Min Max Unit
f
HCLK
Internal AHB clock frequency - 0 48
MHz
f
PCLK
Internal APB clock frequency - 0 48
V
DD
Standard operating voltage - 2.0 3.6 V
V
DDA
Analog operating voltage
(ADC and DAC not used)
Must have a potential equal
to or higher than V
DD
V
DD
3.6
V
Analog operating voltage
(ADC and DAC used)
2.4 3.6
V
BAT
Backup operating voltage - 1.65 3.6 V
V
IN
I/O input voltage
TC and RST I/O –0.3 V
DDIOx
+0.3
V
TTa I/O –0.3 V
DDA
+0.3
(1)
FT and FTf I/O –0.3 5.5
(1)
BOOT0 0 5.5
P
D
Power dissipation at T
A
= 85 °C
for suffix 6 or T
A
= 105 °C for
suffix 7
(2)
LQFP64 - 444
mW
LQFP48 - 364
LQFP32 - 357
UFQFPN32 - 526
UFQFPN48 - 625
UFBGA64 - 308
WLCSP36 - 333
T
A
Ambient temperature for the
suffix 6 version
Maximum power dissipation –40 85
°C
Low power dissipation
(3)
–40 105
Ambient temperature for the
suffix 7 version
Maximum power dissipation –40 105
°C
Low power dissipation
(3)
–40 125
T
J Junction temperature range
Suffix 6 version –40 105
°C
Suffix 7 version –40 125
1. For operation with a voltage higher than V
DDIOx
+ 0.3 V, the internal pull-up resistor must be disabled.
2. If T
A
is lower, higher P
D
values are allowed as long as T
J
does not exceed T
Jmax
. See Section 7.8: Thermal characteristics.
3. In low power dissipation state, T
A
can be extended to this range as long as T
J
does not exceed T
Jmax
(see Section 7.8:
Thermal characteristics).
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