UM1521
Schematics
Doc ID 022868 Rev 1
41/56
Figure 26.
MCU
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D
C
B
A
STMicroelectronics
Title:
Number:
Rev:
Sheet
B.3
Date:
2/3/2012
MB964
2
STM32L152D-EVAL
MCU
PE
0
PE
1
PE
2
PE
3
PE
4
PE
5
PE
6
PE
7
PE
8
PE
9
P
E10
P
E11
P
E12
P
E13
P
E14
P
E15
P
A[0..15]
P
A[0..15]
P
B[0..15]
P
B[0..15]
P
C[0..15]
P
C[0..15]
P
D[0..15]
P
D[0..15]
P
E[0..15]
P
E[0..15]
R89
10K
VDD
2
3
1
SW2
09.03290.01
PA
0
PA
1
PA
2
PA
3
PA
4
PA
5
PA
6
PA
7
PA
8
PA
9
P
A10
P
A11
P
A12
P
A13
P
A14
P
A15
PB
0
PB
1
PB
2
PB
3
PB
4
PB
5
PB
6
PB
7
PB
8
PB
9
P
B10
P
B11
P
B12
P
B13
P
B14
P
B15
PD
0
PD
1
PD
2
PD
3
PD
4
PD
5
PD
6
PD
7
PD
8
PD
9
P
D10
P
D11
P
D12
P
D13
P
D14
P
D15
P
H[0..2]
P
H[0..2]
WAKE
U
P
SEG35
SEG34
SEG33
SEG32
SEG0
SEG1
SEG2
SEG3
SEG4
SEG31
SEG30
SEG5
SEG6
SEG10
SEG11
SEG39
SEG38
SEG37
SEG36
COM0
COM1
COM2
USB_DM
USB_DP
TMS/SWDIO
TCK/SWCLK
SEG16
COM3
C51
100nF
R52
[N/A]
C50
20pF
C53
20pF
X1
8MHz
(with
socket)
R51
0
R88
10K
2
3
1
SW1
09.03290.01
D2
BAT60JFI
L
M
D1
BAT60JFI
L
M
PH
0
PH
1
PH
2
JP1
1
R72
150
1
4
3
2
B1
RESET
VDD
VDD
RESET#
Bootloader_BOOT0
Bootloader_RESET
4
1
3
2
X3
MC306-G-06Q-32.768
(manufacturer
J
F
VNY)
C67
6.8pF
C74
6.8pF
R84
0
R85
0
PC
0
PC
1
PC
2
PC
3
PC
4
PC
5
PC
6
PC
7
PC
8
PC
9
P
C10
P
C11
P
C12
P
C13
P
C14
P
C15
MIC_IN
P
MIC_IN
N
1
2
3
JP7
ADC_DAC
L
P
F
_OA3_OUT
E
2
P
_SCK
SEG17
SEG7
SEG8
SEG9
SHIE
L
D_CT6_3
CT6_4
SEG12
SEG13
SEG14
SEG15
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
COM4
COM5
COM6
IDD_CNT_EN
D2
D3
COM7
L
ED1
F
SMC_NOE
F
SMC_NWE
F
SMC_NWAIT
L
ED2
SEG28
SEG29
TRACE_D3
TRACE_D2
TRACE_D1
PF
0
PF
1
PF
2
PF
3
PF
4
PF
5
PF
6
PF
7
PF
8
PF
9
PF
1
0
PF
1
1
PF
1
2
PF
1
3
PF
1
4
PF
1
5
CT11_1
CT11_2
CT11_3
CT11_4
P
otentiometer
IDD_Measurement
PG
0
PG
1
PG
2
PG
3
PG
4
PG
5
PG
6
PG
7
PG
8
PG
9
P
G10
P
G11
P
G12
P
G13
P
G14
P
G15
JOY_SEL
JOY_DOWN
JOY_LE
F
T
JOY_RIGHT
JOY_UP
CS_RAM_EBAR2
CS_NOR_EBAR1
L
CD_EBAR3
L
ED3
L
ED4
PE
2
1
PE
3
2
PE
4
3
PE
5
4
PE
6
5
P
H0-OSC_IN
23
P
H
1
-OSC_OUT
24
NRST
25
P
A0-W
K
U
P
1
34
PA
1
35
PA
2
36
PA
3
37
PA
4
40
PA
5
41
PA
6
42
PA
7
43
PB
0
46
PB
1
47
PB
2
48
PE
7
58
PE
8
59
PE
9
60
P
E10
63
P
E11
64
P
E12
65
P
E13
66
P
E14
67
P
E15
68
P
B10
69
P
B11
70
P
B12
73
P
B13
74
P
B14
75
P
B15
76
PD
8
77
PD
9
78
P
D10
79
P
D11
80
P
D12
81
P
D13
82
P
D14
85
P
D15
86
PA
8
100
PA
9
101
P
A10
102
P
A11
103
P
A12
104
P
A13
105
P
A14
109
P
A15
110
PD
0
114
PD
1
115
PD
2
116
PD
3
117
PD
4
118
PD
5
119
PD
6
122
PD
7
123
PB
3
133
PB
4
134
PB
5
135
PB
6
136
PB
7
137
BOOT0
138
PB
8
139
PB
9
140
PE
0
141
PE
1
142
P
C13-W
K
U
P
2
7
P
C14-OSC32_IN
8
P
C15-OSC32_OUT
9
PC
0
26
PC
1
27
PC
2
28
PC
3
29
PC
4
44
PC
5
45
PC
6
96
PC
7
97
PC
8
98
PC
9
99
P
C10
111
P
C11
112
P
C12
113
PF
2
12
PF
3
13
PF
4
14
PF
5
15
PF
6
18
PF
7
19
PF
8
20
PF
9
21
PF
1
0
22
PF
1
1
49
PF
1
2
50
PF
1
3
53
PF
1
4
54
PF
1
5
55
PF
0
10
PF
1
11
PG
2
87
PG
3
88
PG
4
89
PG
5
90
PG
6
91
PG
7
92
PG
8
93
PG
9
124
P
G10
125
P
G11
126
P
G12
127
P
G13
128
P
G14
129
P
G15
132
PG
0
56
PG
1
57
PH
2
106
U16A
STM32L
P
F
[0..15]
P
F
[0..15]
P
G[0..15]
P
G[0..15]
1
2
3
JP6
1
2
3
JP8
U5V
R131
100K
R151
180K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
CN7
Header
24X2
PA9
PA8
PA10
PB9
PB11
PB10
PB5
PB14
PB13
PB12
PA15
PB8
PB15
PC2
PC1
PC0
PA3
PA2
PB0
PA7
PA6
PB4
PB3
PB1
COM1
COM0
COM2
COM3
SEG11
SEG10
SEG9
SEG14
SEG13
SEG12
SEG17
SEG16
SEG15
SEG20
SEG19
SEG18
SEG2
SEG1
SEG5
SEG4
SEG3
SEG8
SEG7
SEG6
M
IC_OUT
E2P_
M
ISO
E
2
P
_MOSI
TDI
E2P_CS
Audio_RST
COM_IN-
TDO/SWO
TRST
L
DR_OUT
COM_IN
+
I2C_SMB
JP1
4
Audio_Rf_Temp_SCL
Audio_Rf_Temp_SDA
USART1/IrDA_TX
USART1/IrDA_RX
I2S_CMD
I2S_CK
I2S_DIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
CN6
Header
24X2
PD2
PC12
PC11
PC10
PC3
PC4
PC5
PC6
PC7
PC8
PC9
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
PE0
PE1
PE2
PE3
PA1
COM7
COM6
COM5
COM4
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35
SEG36
SEG37
SEG38
SEG39
SEG0
I2S_MCK
MicroSDCard_Detect
MicroSDCard_D0
MicroSDCard_D1
F
SMC_NBL0
F
SMC_NBL1
TRACE_CK
TRACE_D0
MicroSDCard_D2
MicroSDCard_D3
MicroSDCard_CLK
MicroSDCard_CMD
D4
D5
D6
D7
D8
D9
D10
D11
D12
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
D[0..15]
A[0..23]
D[0..15]
A[0..23]
A20
A21
A22
D13
D14
D15
D0
D1
A16
A17
A18
A23
A19
LCD
Glass
Connector
LCD
Glass
Connector
Close
to
MCU
on
PCB
R33
5.36K[1%]
R28
63.4K[1%]
C26
820pF
C25
5.6nF
R107
1
K
R87
1K
OA2_IN
P
OA2_IN
N
VDD
R86
[N/A]
OA2_OUT
TP7
OA2_OUT
OA2_IN
L
P
F
_OA3_IN
P
L
P
F
_OA3_OUT
L
P
F
_OA3_IN
P
L
P
F
_OA3_OUT
Sallen-Key
LPF
Close
to
MCU
on
PCB
+
-
OpAmp3
PC3
PC1
STM32L
+
-
OpAmp2
1
3
2
RV4
3314J-1
-103
STM32L
PA6
PA7
PB0
OA2_IN
P
OA2_IN
N
OA2_OUT
R150
0
1
2
3
JP2
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