Figure 18. Idd Measurement - STMicroelectronics UM1079 User Manual

1
A
IDD Measure
VDD_MCU
off on
JP1
B
R21 R22
VDD
2(1%) 1K(1%)
U20
1
S1
2
G1
3
C VDD S2
4
G2
STS4DPF20L
D
1
Figure 18. I
2
U5
5 MAX9938FEUK+ U6
3 1 2
I/O O/I
4 4
C
3 5
GND VCC
74H1G66STR
U7
74LX1G04CTR
5 3
VDD
IDD_WAKEUP
PA0
SB1
8
D1
R20
7
D1
47K
6
D2
5
D2
2
measurement
DD
3
R18 R19
SB2
10K 0
C13
VDD 1uF
VDD
C14
U3 VDD
100nF
1 16
Q12 VCC
2 15
Q13 Q10
R25
3 14
Q14 Q8
10K
4 13
Q6 Q9
5 12
Q5 CLR
6 11 SB14
Q7 CI
7 10
Q4 CO
8 9
GND CO
C15 R23 R24
M74HC4060TTR
1nF 15K 30K
Oscillator frequency 30KHz
STMicroelectronics
Title:
Number:
3
4
IDD_Measurement
PA4
IDD_CNT_EN
PC13
STM32L152C-DISCO - IDD_Measurement
MB963 Rev: C.2(PCB.SCH) Date: 1/16/2017 Sheet 5 of
4
A
B
C
D
6