STMicroelectronics STM32L476, User Manual

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Schematics
UM18
79
2
8/4
1
U
M1
879
Re
v 4
Figure 13. IDD measurement / MFX (Multi Function eXpander)
4 10
IDD measurement / MFX (Multi Function eXpander)
MB1184 C-01
6/15/2015
Title:
Size: Reference:
Date: Sheet: of
A4 Revision:
STM32L476G-DISCO Project:
VDD_MCU
3V_MFX
Current
direction
to MCU
differential
amplifier
CAL
SH0 SH1 SH2
Shunts
3
4
5
G
S
D
6
2
1
T3
STT7P2UH7
3
4
5
G
S
D
6
2
1
T7
STT7P2UH7
3
4
5
G
S
D
6
2
1
T9
STT7P2UH7
3
4 5
G
S D
6 2 1
T5
STT7P2UH7
3V3
decoupling capacitors
close to TSZ122
MFX_IRQ_OUT
IDD_MEAS
MFX_SWCLK
CAL
SH2
SH1
MFX_SWDIO
IDD_MEAS
see note *
SH1_D SH2_D SH0_D
CAL_D
4
3
5
G
S
D
6
7
8
2
1 T2
STS9P2UH7
3V_MFX
SH0_D
SH0
4
3
5
G
S
D
6
7
8
2
1 T4
STS9P2UH7
3V_MFX
CAL_D
CAL
4
3
5
G
S
D
6
7
8
2
1 T6
STS9P2UH7
SH1_D
SH1
4
3
5
G
S
D
6
7
8
2
1 T8
STS9P2UH7
SH2_D
SH2
CAL_D
CAL_D
3V
3V_MFX
one capacitor close to each MFX pins:
VDD, VDD 1, VDD 2, VDD 3
SH0
VDD_MCU
MFX_WAKEUP
L2
Ferrite
MFX_I2C_SDA
MFX_I2C_SCL
1
2
3
JP5
bypass
R36
100K_1%_0402
R37
100K_1%_0402
R39
1_1%_0805 R43
24_1%_0805 R44
620_1%_0805 R41
10K_1%_0805
R34
100K_1%_0402
R29
10K_1%_0402
C33
100nF_X7R_10%_0402
C34 1uF_POL_10%_TANA
C26
100nF_X7R_10%_0402
R38
100K_1%_0402
R94
100K_1%_0402
MFX_USART3_RX
MFX_USART3_TX
MFX_USART3_RX
MFX_USART3_TX 3V_MFX
1
2
3
4
CN5
MFX_SWCLK
MFX_SWDIO
C30
100nF_X7R_10%_0402
C31
100nF_X7R_10%_0402
C28
100nF_X7R_10%_0402
C37
100nF_X7R_10%_0402
C40
1uF_X5R_10%_0603
R51
100_1%_0402
C39
100nF_X7R_10%_0402
V+
V-
3
2
1
4
8
U11A
TSZ122IST
5
6
7
U11B
TSZ122IST
V+
V-
3
2
1
4
8
U10A
TSZ122IST
5
6
7
U10B
TSZ122IST
C36
100nF_X7R_10%_0402
see note *
see note *
see note *
Note *: two footprints superimposed allows to
also populate with SO-8 package.
(STS9P2UH7 P MOS transistors)
LAYOUT PROPOSAL DRAWING
C38
100nF_X7R_10%_0402
3V3
decoupling capacitors
close to TSZ122
R27
0_5%_0402
MFX_I2C_SCL
MFX_I2C_SDA
MFX_WAKEUP
MFX_IRQ_OUT
R28
510_1%_0402
R35
[NA]
NRST
C32
[NA]
NRST
MFX_I2C_SCL
MFX_I2C_SDA
R30
0_5%_0603
3V_MFX
3V_MFX
3V_MFX
3V_MFX
PC13
PB10
PA4
PB11
SB27
SB26
D5 BAT60JFILM
VD
D
1
WAKEUP
2
IDD_CAL/GPO4
3
IDD_SH0
4
IDD_SH1/GPO5
5
IDD_SH2/GPO6
6
NRST
7
VS
S
A
8
VD
DA
9
TSC_XP/GPO0
10
TSC_XN/GPO1
11
TSC_YP/GPO2
12
TSC_YN/GPO3
13
IDD_MEAS
14
GPIO0
18
GPIO1
19
GPIO2
20
GPIO3
39
GPIO4
40
GPIO5
15
USART_TX
21
USART_RX
22
VS
S
_
1
23
VD
D_
1
24
SPARE
25
GPIO6
16
GPIO7
17
GPIO8
29
GPIO9
30
GPIO10
31
GPIO11
32
GPIO12
33
GPIO13
26
SWDIO
34
VS
S
_
2
35
VD
D_
2
36
SWCLK
37
IDD_SH3/GPO7
38
GPIO14
27
GPIO15
28
IDD_VDD_MCU
41
I2C_SCL
42
I2C_SDA
43
BOOT0
44
I2C_ADDR
45
IRQOUT
46
VS
S
_
3
47
VD
D_
3
48
V
D
V
D
WA W W K A A EU K K P
IDD_CAL/GPO4
IDD_SH0
IDD_SH1/GPO5
IDD_SH2/GPO6
NRST
V
S
S
A
V
D
D
A
TSC_XP/GPO0
TSC_XN
X X /G N N PO1
TSC_YP/GPO2
TSC_YN
Y Y /G N N PO3
IDD_MEAS
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
USAR A A T_TX
USAR A A T_RX R R
V
S
S
_
1
V
D
D
_
1
SPAR A A E R R
GPIO6
GPIO7
GPIO8
GPIO9
GPIO10
GPIO11
GPIO12
GPIO13
SWDIO
V
S
S
_
2
V
D
D
_
2
SWCLK
IDD_SH3/GPO7
GPIO14
GPIO15
IDD_VDD_MCU
I2C_SCL
I2C_SDA
BOOT0
I2C_ADDR
IRQOUT
V
S
S
_
3
V
D
D
_
3
MFX_V2
U8
MFX_V2
R47
6K04_1%_0402
R40
6K04_1%_0402
R49
15K_1%_0402
R42
300K_1%_0402
R50
300K_1%_0402
R48
300K_1%_0402