Reference Design; Description; Clocks; Reset - ST STM32H7 3 Series Application Note

Reference design

7 Reference design
7.1

Description

The reference design shown in
integrated microcontroller that combines the ARM
up to 400 MHz with up to 2 Mbyte dual-bank Flash memory and 1 Mbytes of RAM (including
192 Kbytes of TCM RAM, 864 Kbytes of user RAM and 4 Kbytes of backup SRAM).
7.1.1

Clocks

Two clock sources are used for the microcontroller:
•
LSE: X2– 32.768 kHz crystal for the embedded RTC.
•
HSE: X1– 25 MHz crystal.
Refer to
7.1.2

Reset

The reset signal of STM32H753XI device is low active and the reset sources include:
• Reset button B1
•
Debugging Tools from JTAG/SWD connector CN15 and ETM trace connector CN12
Refer to
7.1.3

Boot mode

Refer to
7.1.4

SWJ interface

Refer to
7.1.5

Power supply

Refer to
7.2

Component references

Id
1
2
3
32/48
Section 3: Clocks on page
Section 1.3: Reset and power supply supervisor on page
Section 4: Boot configuration on page
Section 5: Debug management on page
Section 1: Power supplies on page

Table 7. Mandatory components

Component name
Microcontroller
Capacitor
Capacitor
Capacitor
Figure 19, is based on the STM32H753XI, a highly
®
Cortex
19.
23.
26.
7.
Reference Quantity
STM32H753XI
100 nF
4.7 µF
2.2 µF
DocID029918 Rev 1
®
-M7 32-bit RISC core running at
13.
Comments
1 TFBGA240 package
Ceramic capacitors (decoupling
20
capacitors)
Ceramic capacitor (decoupling
1
capacitor)
Ceramic capacitor (regulator
2
capacitor)
AN4938