Schematics
UM1521
40/56
Doc ID 022868 Rev 1
Figure 25.
RS-232 and LCD
STMicroelectronics
Title:
Number:
Rev:
B.3
Date:
2/3/2012
MB964
STM32L152D-EVAL
LCD&RS232
PG12
PD5
PD4
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
L
CD_D0
L
CD_D1
L
CD_D2
L
CD_D3
L
CD_D4
L
CD_D5
L
CD_D6
L
CD_D7
L
CD_D8
L
CD_D9
L
CD_D10
L
CD_D11
L
CD_D12
L
CD_D13
L
CD_D14
L
CD_D15
C38
100nF
VDD
C55
100nF
+3V3
L
CD_RS
L
CD_CSN
L
CD_WRN
L
CD_RDN
L
CD_RSTN
OE
48
A1
47
B1
2
A2
46
B2
3
A3
44
B3
5
A4
43
B4
6
A5
41
B5
8
A6
40
B6
9
A7
38
B7
11
A8
37
B8
12
OE
25
A1
36
B1
13
A2
35
B2
14
A3
33
B3
16
A4
32
B4
17
A5
30
B5
19
A6
29
B6
20
A7
27
B7
22
A8
26
B8
23
DIR
24
VCCB
18
VCCB
7
GND
4
GND
10
GND
15
GND
21
DIR
1
VCCA
42
VCCA
31
GND
45
GND
39
GND
34
GND
28
U14
SN74LVC16T245
C39
100nF
VDD
C57
100nF
+3V3
VDD
RESET#
F
SMC_NWE
L
CD_EBAR3
F
SMC_NOE
OE
48
A1
47
B1
2
A2
46
B2
3
A3
44
B3
5
A4
43
B4
6
A5
41
B5
8
A6
40
B6
9
A7
38
B7
11
A8
37
B8
12
OE
25
A1
36
B1
13
A2
35
B2
14
A3
33
B3
16
A4
32
B4
17
A5
30
B5
19
A6
29
B6
20
A7
27
B7
22
A8
26
B8
23
DIR
24
VCCB
18
VCCB
7
GND
4
GND
10
GND
15
GND
21
DIR
1
VCCA
42
VCCA
31
GND
45
GND
39
GND
34
GND
28
U13
SN74LVC16T245
A1
A1
PF0
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
U10
ST3241EBPR
C29
100nF
C21
100nF
C23
100nF
C27
100nF
C22
100nF
+3V3
1
6
2
7
3
8
4
9
5
CN1
DB9-m
ale
USART1
+3V3
Bootloader_BOOT0
USART1_TXD
USART1_RXD
BOOT_RESET
RXD
TXD
CTS
DSR
SD
5
TxD
3
GND
8
Anode
(VCC2)
1
Cathode
2
RxD
4
VCC1
6
NC
7
U2
T
F
DU6300
R5
5
R4
47
C4
100nF
+3V3
C7
4.7uF
IrDA
USART1_TXD
IrDA_RXD
C3
100nF
C8
4.7uF
Bootloader_RESET
+3V3
TFT
LCD
CS
1
RS
2
WR/SCL
3
RD
4
RESET
5
VDD
24
VCI
25
GND
26
GND
27
B
L
_VDD
28
B
L
_Control
23
B
L
_GND
22
PD
1
6
PD
2
7
PD
3
8
PD
4
9
PD
5
10
PD
6
11
PD
7
12
PD
8
13
P
D10
14
P
D11
15
P
D12
16
P
D13
17
P
D14
18
P
D15
19
P
D16
20
P
D17
21
SDO
29
SDI
30
CN4
Connector
to
Mother
board
L
CD_D0
L
CD_D1
L
CD_D2
L
CD_D3
L
CD_D4
L
CD_D5
L
CD_D6
L
CD_D7
L
CD_D8
L
CD_D9
L
CD_D10
L
CD_D11
L
CD_D12
L
CD_D13
L
CD_D14
L
CD_D15
L
CD_RS
L
CD_CSN
L
CD_WRN
L
CD_RDN
L
CD_RSTN
R38
0
USART1/IrDA_RX
PA10
R39
[N/A]
USART1_RXD
1
2
3
JP4
IrDA_RXD
BOOT_RESET
USART1/IrDA_TX
PA9
R30
100K
VDD
USART1_TXD
D[0..15]
A[0..23]
D[0..15]
A[0..23]
A0
F
SMC_NOE
L
CD_EBAR3
L
CD_EBAR3
L
CD_EBAR3
GPIO
Control
Direction
VDD
VDD
R34
10K
R68
10K
+5V
C101
10uF
L1
BEAD
C94
100nF
L2
BEAD
R15
0
+3V3
R11
[N/A]
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