STM32F405VG datasheet(122/167 Pages) STMICROELECTRONICS

Teilenummer	STM32F405VG

Bauteilbeschribung	ARM Cortex-M4 32b MCUFPU, 210DMIPS, up to 1MB Flash/1924KB RAM

PDF	167 Pages

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Hersteller	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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122 / 167 page

Electrical characteristics

STM32F405xx, STM32F407xx

122/167

Doc ID 022152 Rev 2

General PCB design guidelines

Power supply decoupling should be performed as shown in Figure 49 or Figure 50,

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 49.

Power supply and reference decoupling (VREF+ not connected to VDDA)

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.

Figure 50.

Power supply and reference decoupling (VREF+ connected to VDDA)

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.

V REF+

STM32F

V DDA

V SSA/V REF-

1 µF // 10 nF

ai17535

(See note 1)

VREF+/VDDA

STM32F

1 µF // 10 nF

VREF–/VSSA

ai17536

(See note 1)

STM32F405VG Datenblatt(PDF) 122 Page - STMicroelectronics