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STM32F427AI Datasheet(PDF) 163 Page - STMicroelectronics

Part # STM32F427AI
Description  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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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F427AI Datasheet(HTML) 163 Page - STMicroelectronics

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DS9405 Rev 12
163/240
STM32F427xx STM32F429xx
Electrical characteristics
197
General PCB design guidelines
Power supply decoupling should be performed as shown in Figure 52 or Figure 53,
depending on whether VREF+ is connected to VDDA or not. The 10 nF capacitors should be
ceramic (good quality). They should be placed them as close as possible to the chip.
Figure 52. Power supply and reference decoupling (VREF+ not connected to VDDA)
1. VREF+ and VREF– inputs are both available on UFBGA176. VREF+ is also available on LQFP100, LQFP144,
and LQFP176. When VREF+ and VREF– are not available, they are internally connected to VDDA and VSSA.
STM32F
1 μF // 10 nF
1 μF // 10 nF
VREF+
(1)
VDDA
VSSA/VREF-
(1)
ai17535b



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