UM0970 Datasheet, PDF (26/30 Pages) STMicroelectronics – STM8L-DISCOVERY

Figure 16. I_DD measurement
IDD
VDD_MCU
off on
+3V3
JP1
R20
2(1%)
R21
2K(1%)
U4
MAX9938FEUK+
5
U6
4
3
1
4
3
I/O O/I
C
GND VCC
2
5
+3V3
74H1G66STR
S
D
T1
G STT5PF20V +3V3
5
3
R18
10K
C11
1uF
+3V3
R17
0
4
T2
3
5
1
2
6
STT5PF20V
+3V3
U7
74LX1G04CTR
U3
1
2
3
4
5
6
7
8
Q12
Q13
Q14
Q6
Q5
Q7
Q4
GND
VCC
Q10
Q8
Q9
CLR
CI
CO
CO
16
15
14
13
12
11
10
9
M74HC4060TTR
C13
1nF
C12
100nF
+3V3
R26
10K
R22 R23
15K 30K
SB11
SB12
R19
47K
SB14
Oscillator frequency 30KHz
PF0
IDD_Measurement
PE6
IDD_WAKEUP
PC4
IDD_CNT_EN
STMicroelectronics
Title:
STM8L-DISCOVERY IDD_Measurement
Number:MB915 Rev: B.2(SCH.PCB) Date: 7/15/2010
Sheet 3