Datasheet

Electrical characteristics STM32L475xx
90/204 DS10969 Rev 5
6.3 Operating conditions
6.3.1 General operating conditions
Table 23. 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
DDUSB
USB supply voltage
USB used 3.0 3.6
V
USB not used 0 3.6
V
IN
I/O input voltage
TT_xx I/O -0.3 V
DDIOx
+0.3
V
BOOT0 0 9
All I/O except BOOT0 and TT_xx -0.3
Min(Min(V
DD
, V
DDA
,
V
DDUSB
)+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
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
TJ Junction temperature range
Suffix 6 version –40 105
°CSuffix 7 version –40 125
Suffix 3 version –40 130
1. When RESET is released functionality is guaranteed down to V
BOR0
Min.
2. This formula has to be applied only on the power supplies related to the IO structure described by the pin definition table.
Maximum I/O input voltage is the smallest value between Min(V
DD
, V
DDA
, V
DDUSB
)+3.6 V and 5.5V.
3. For operation with voltage higher than Min (V
DD
, V
DDA
, V
DDUSB
) +0.3 V, the internal Pull-up and Pull-Down resistors must
be disabled.
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