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Figure 29.
STM32H7x7I-EVAL RS232
10
17
RS232
MB1246
E.2
2/13/2019
Title:
Size:
Reference:
Date:
Sheet:
of
A4
Revision:
STM32H7xxI-EVAL
Project:
RS232_TX
RS232_RX
C2+
1
C2-
2
V-
3
R1IN
4
R2IN
5
R3IN
6
R4IN
7
R5IN
8
T1OUT
9
T2OUT
10
T3OUT
11
T3IN
12
T2IN
13
T1IN
14
R5OUT
15
R4OUT
16
R3OUT
17
R2OUT
18
R1OUT
19
R2OUTB
20
R1OUTB
21
nSHDN
22
nEN
23
C1-
24
GND
25
VCC
26
V+
27
C1+
28
U4
ST3241EBPR
+3V3
+3V3
Bootloader_BOOT0
Bootloader_RESET
PB14
PB15
RXD
TXD
CTS
DSR
RS232
C101
100nF
C3
100nF
C104
100nF
C105
100nF
C6
100nF
1
6
2
7
3
8
4
9
5
CN2
DB9-male USART1
UM2525
STM32H7x7I-EV
AL
electrical schematics
UM2525
-
Rev 3
page 52/69