ST STM8A-DISCOVERY - Figure 29. STM8 AL Board Idd_Measurement

UM1574 STM8AL board electrical schematics
Doc ID 023645 Rev 1 45/48
Figure 29. STM8AL board IDD_measurement
1
1
2
2
3
3
4
4
D D
C C
B B
A A
STMicroelectronics
Title:
Number: Rev: Sheet of
B.0(PCB.SCH)
Date:
10/3/2012
MB1037 5 6
STM8AL BOARD IDD_Measurement
R28
47K
2
3
4
5
U4
74LX1G04CTR
I/O
1
O/I
2
GND
3
C
4
VCC
5
U9
74H1G66STR
VDD
R23
2(1%)
R24
2K(1%)
Q12
1
Q13
2
Q14
3
Q6
4
Q5
5
Q7
6
Q4
7
GND
8
CO
9
CO
10
CI
11
CLR
12
Q9
13
Q8
14
Q10
15
VCC
16
U7
M74HC4060TTR
R26
10K
R25
10K
C14
1uF
1
2
3
JP2
C16
1nF
R29
15K
R27
30K
Oscillator frequency 30KHz
R22
0
C15
100nF
SB6
SB8
SB7
IDD Measure
onoff
4
5
2
3
1
U8
MAX9938FEUK+
S1
1
D1
8
G1
2
D1
7
S2
3
D2
6
G2
4
D2
5
U5
STS4DPF20L
IDD_Measurement
IDD_CNT_EN
IDD_WAKEUP
PF0
PE6
PC4
3V3
3V3
3V3
3V3
3V3