STMicroelectronics STM32L476G-EVAL - IDD Measurement Schematic Diagram

UM1855 Schematic diagrams
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Figure 50. IDD measurement schematic diagram
19 25
IDD_measur ement
MB1144 B-02
6/24/2015
Title:
Size: Reference:
Date: Sheet: of
A3
Revision:
STM32L476G-EVAL
Project:
IDD_Measurement
IDD_CNT_EN
IDD_WAKEUP
2
3
4
5
U16
SN74LVC1G04DCKT
I/O
1
O/I
2
GND
3
C
4
VCC
5
U13
SN74LVC1G66DCKT
VDD
R135
1[1%]
R123
1K[1%]
3
4
5
G
S
D
1
2
6
T2
FDC606P
3
4
5
G
S
D
1
2
6
T3
FDC606P
VDD
Q11
1
Q12
2
Q13
3
Q5
4
Q4
5
Q6
6
Q3
7
GND
8
Ctc
9
Rtc
10
RS
11
MR
12
Q8
13
Q7
14
Q9
15
VCC
16
U14
74LV4060PW
VDD
VDD
R127
220K
R122
10K
VDD
VDD_MCU
C77
1nF
R134
15K
R130
30K
Oscillator frequency 30KHz
VDD
C72
100nF
PC5
PF10
PA5
R136
3K6 0.1%
R125
3K6 0.1%
R129
180K 0.1%
R132
180K 0.1%
GND
+5V
C75
100nF
GND
GND
decoupling capacitor
close from TSZ124 part
1
4
3
2
11
V+
V-
U15A
TSZ124IPT
7
5
6
U15B
TSZ124IPT
14
12
13
U15D
TSZ124IPT
8
10
9
U15C
TSZ124IPT
R128
22K
R124
1K
Shunt _x100 0
Shunt _x100 0
Current
direction
to MCU
bypass path current
measurement
path
differential
amplifier
shunts
C73 1uF
R137
220K
C74
100nF
C76
100nF
C144
100nF
GND
1 2 3 4
JP11
Current
direction
VDD from
power
supply