Schematics
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
RS232
UM24 CONN
Female
To MCU
To UM24
To DB9
Default UARTs:
UM24 - UART1 (PA9 & PA10);
MCU - UART2 (PA2 & PA3) - RS232.
Hole
RS232_RXD
GPIO_IN_0
RS232_TXD
GPIO_OUT_0
GPIO_IN_1
GPIO_OUT_1
RS232_RXD
RS232_TXD
GPIO_OUT_1
GPIO_OUT_0
GPIO_IN_1
GPIO_IN_0
GPIO_IN_0
UHF_RXD
UHF_TXD
GPIO1
GPIO0
GPIO2
GPIO3
GPIO2_IN0
GPIO_IN_1 GPIO3_IN1
GPIO_OUT_0 GPIO0_OUT0
GPIO_OUT_1 GPIO1_OUT1
GPIO3_IN1
GPIO2_IN0
GPIO1_OUT1
GPIO0_OUT0
GPIO3_IN1
GPIO2_IN0
GPIO1_OUT1
GPIO0_OUT0
UART2_232_RXD
UART2_232_TXD
UHF_TXD
UHF_RXD
VCC_SYS5V
VDD_UART
VDD_UART
VCC_3.3V
VCC_IO
VCC_3.3V
VCC_IO
VCC_3.3V
VCC_IO
VCC_3.3V
VCC_IO
VCC_5V_EXT
VCC_5V_EXT
VCC_3.3V
VDD_UHF
VCC_SYS5V VCC_3.3VVCC_IO
VCC_3.3V
UART2_TXD [2]
UART1_TXD[2]
UART2_RXD [2]
UART1_RXD[2]
PB10_OUT0 [2]
PB13_IN0 [2]
PB11_OUT1 [2]
PB14_IN1 [2]
SWD_IO[2]
SWD_CLK[2]
Title
Size
Document Number Re v
Date: Sheet
of
<Doc> 2.0
EXT_IO/RS232/UHF
B
67Wednesday, December 23, 2020
Title
Size
Document Number Re v
Date: Sheet
of
<Doc> 2.0
EXT_IO/RS232/UHF
B
67Wednesday, December 23, 2020
Title
Size
Document Number Re v
Date: Sheet
of
<Doc> 2.0
EXT_IO/RS232/UHF
B
67Wednesday, December 23, 2020
D14
PESD0603-240
12
CN5
HEADER
5V1
1
5V2
2
GND1
3
GND2
4
NC
5
R1000_EN
6
TX
7
RX
8
nRESET
9
nBL/nPD
10
STATUS_LED
11
TDI
12
TDO
13
TCK
14
TMS
15
GND5
21
GND4
22
GND3
16
GPIO0
17
GPIO1
18
GPIO2
19
GPIO3
20
H1
M2.3_U3.6
1
D13
PESD0603-240
12
R52 10K
Q72N7002
D
G
S
R81 0
R88 10K
C55
10uF
R50 0
R78 0
D15
PESD0603-240
12
R64 @0
R48
1.5K
R79 0
R62
10K
R68 @0
R51 0
R87 10K R59 0
C61 100nF
R80 0
R86 10K
D10 RB160M-40
2 1
R49 0
R73 10K
R71 0
U8
SP3232E
C1+
1
V+
2
C1-
3
C2+
4
C2-
5
V-
6
T2OUT
7
R2IN
8
R2OUT
9
T2IN
10
T1IN
11
R1OUT
12
R1IN
13
T1OUT
14
GND
15
VCC
16
R61 10K
R84 @0
R74
10K
1 2
H2
M2.3_U3.6
1
Q62N7002
D
G
S
R70
10K
R55 0
R83 0
R58 0
H3
M2.3_U3.6
1
R72 0
L11 30Z
12
R67 0
C60 100nF
R75
10K
1 2
R66 0
C56
100nF
R69 10K
R54
1.5K
R65 @0
H4
M2.3_U3.6
1
R53 @0
R77 0
C58100nFC59
10uF
12
R63 @0
R85 @0
R56 0
D11
PESD0603-240
12
C57100nF
R89 10K
L10 30Z
1 2
5
4
3
2
1
9
8
7
6
CN4
DSUB_RS232
5
5
4
4
3
3
2
2
1
1
9
9
8
8
7
7
6
6
G1
10
G2
11
R57 0
R60 0
Q82N7002
D
G
S
R76 0
R82 0
Q92N7002
D
G
S
D12
PESD0603-240
12
R47 @0