Datasheet

Electrical characteristics STM32L431xx
82/200 DocID028800 Rev 1
6.3 Operating conditions
6.3.1 General operating conditions
Table 21. General operating conditions
Symbol Parameter Conditions Min Max Unit
f
HCLK
Internal AHB clock frequency - 0 80
MHzf
PCLK1
Internal APB1 clock frequency - 0 80
f
PCLK2
Internal APB2 clock frequency - 0 80
V
DD
Standard operating voltage -
1.71
(1)
3.6 V
V
DDA
Analog supply voltage
ADC or COMP used 1.62
3.6 V
DAC or OPAMP used 1.8
VREFBUF used 2.4
ADC, DAC, OPAMP, COMP,
VREFBUF not used
0
V
BAT
Backup operating voltage - 1.55 3.6 V
V
IN
I/O input voltage
TT_xx I/O -0.3 V
DDIOx
+0.3
V
All I/O except TT_xx -0.3
MIN(MIN(V
DD
,
V
DDA
)+3.6 V,
5.5 V)
(2)(3)
P
D
Power dissipation at
T
A
= 85 °C for suffix 6
or
T
A
= 105 °C for suffix 7
(4)
LQFP100 - 476
mW
LQFP64 - 444
LQFP48 - 350
UFBGA100 - 350
UFBGA64 - 307
UFQFPN48 - 606
UFQFPN32 - 523
WLCSP64 - 434
WLCSP49 - 416
TA
Ambient temperature for the
suffix 6 version
Maximum power dissipation –40 85
°C
Low-power dissipation
(5)
–40 105
Ambient temperature for the
suffix 7 version
Maximum power dissipation –40 105
Low-power dissipation
(5)
–40 125
Ambient temperature for the
suffix 3 version
Maximum power dissipation –40 125
Low-power dissipation
(5)
–40 130
T
J
Junction temperature range
Suffix 6 version –40 105
°CSuffix 7 version –40 125
Suffix 3 version –40 130
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