Datasheet

Electrical characteristics STM32F446xC/E
98/202 DocID027107 Rev 6
On-chip peripheral current consumption
The MCU is placed under the following conditions:
• At startup, all I/O pins are in analog input configuration.
• All peripherals are disabled unless otherwise mentioned.
• HCLK is the system clock. f
PCLK1
= f
HCLK
/4, and f
PCLK2
= f
HCLK
/2.
The given value is calculated by measuring the difference of current consumption
– with all peripherals clocked off
– with only one peripheral clocked on
–f
HCLK
= 180 MHz (Scale1 + over-drive ON), f
HCLK
= 144 MHz (Scale 2),
f
HCLK
= 120 MHz (Scale 3)"
• Ambient operating temperature is 25 °C and V
DD
=3.3 V.
I
DDIO
I/O switching
Current
V
DD
= 3.3 V
C
EXT
= 10 pF
C = C
INT
+ C
EXT
+ C
S
2 MHz 0.18
mA
8 MHz 0.67
25 MHz 2.09
50 MHz 3.6
60 MHz 4.5
84 MHz 7.8
90 MHz 9.8
V
DD
= 3.3 V
C
EXT
= 22 pF
C = C
INT
+ C
EXT
+ C
S
2 MHz 0.26
8 MHz 1.01
25 MHz 3.14
50 MHz 6.39
60 MHz 10.68
V
DD
= 3.3 V
C
EXT
= 33 pF
C = C
INT
+ Cext
+ C
S
2 MHz 0.33
8 MHz 1.29
25 MHz 4.23
50 MHz 11.02
1. C
S
is the PCB board capacitance including the pad pin. C
S
= 7 pF (estimated value).
2. This test is performed by cutting the LQFP144 package pin (pad removal).
Table 34. Switching output I/O current consumption
(1)
(continued)
Symbol Parameter Conditions
I/O toggling
frequency
(fsw)
Typ Unit
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