Electrical schematics
UM2198
58/69
DocID030511 Rev 1
Figure
3
0
. RS23
2
10
17
RS232
MB1246
B.2
6/9/2017
Title:
Size:
Reference:
Date:
Sheet:
of
A4
Revision:
STM32H7x3I-EVAL
P
roject:
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
C
3
100nF
C104
100nF
C105
100nF
C6
100nF
1
6
2
7
3
8
4
9
5
CN2
DB9-m
ale
USART1
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