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STM32F427AI 数据表(PDF) 137 Page - STMicroelectronics

部件名 STM32F427AI
功能描述  32b Arm® Cortex®-M4 MCUFPU, 225DMIPS, up to 2MB Flash/2564KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 20 com. interfaces, camera & LCD-TFT
PDF  240 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM32F427AI 数据表(HTML) 137 Page - STMicroelectronics

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DS9405 Rev 12
137/240
STM32F427xx STM32F429xx
Electrical characteristics
197
Figure 35. FT I/O input characteristics
Output driving current
The GPIOs (general-purpose input/outputs) can sink or source up to ±8 mA, and sink or
source up to ±20 mA (with a relaxed VOL/VOH) except PC13, PC14, PC15, and PI8, which
can sink or source up to ±3mA. When using the PC13 to PC15 and PI8 GPIOs in output
mode, the speed should not exceed 2 MHz with a maximum load of 30 pF.
In the user application, the number of I/O pins, which can drive current must be limited to
respect the absolute maximum rating specified in Section 6.2. In particular:
•
The sum of the currents sourced by all the I/Os on VDD, plus the maximum Run
consumption of the MCU sourced on VDD, cannot exceed the absolute maximum rating
∑IVDD (see Table 15).
•
The sum of the currents sunk by all the I/Os on VSS plus the maximum Run
consumption of the MCU sunk on VSS cannot exceed the absolute maximum rating
∑IVSS (see Table 15).
MS33746V1
1.92
1.065
1.22
1.7
2.0
2.4
2.7
3.3
3.6
2.0
0.55
0.8
VDD (V)
VIL/VIH (V)
Tested
in
production
- CMOS
requirement
VIHmin
=
0.7VDD
Tested in production - CMOS requirement VILmax = 0.3VDD
Based
on Design
simulations,
VILmax=
0.35VDD-0.04
TTL requirement
VIHmin = 2V
TTL requirement VILmax
= 0.8V
0.51
2.52
Area not
determined
1.19
1.7
Based
on
Design
simulations,
VIHmin=
0.45VDD+0.3



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