Figure 32. Idd Measurement - ST STM32L4R9I-EVAL User Manual

L2
BEAD(FCM1608KF-601T03)
VDD1
C126
C127
100nF
1uF
14
SPARE
PA0
MFX_IRQ_OUT
MFX_IRQ_OUT
10
TSC_XP/GPO0
NRST D1 BAT60JFILM MFX_aGPIO1 11
NRST TSC_XN/GPO1
12
TSC_YP/GPO2
13
TSC_YN/GPO3
Capacitor close to MCU
R133 510 44
BOOT0
C55 100nF 46
IRQOUT
7
NRST
PG9
2
MFX_WAKEUP
MFX_WAKEUP WAKEUP
MFX_V3
34
MFX_SWDIO
SWDIO
37
MFX_SWCLK
SWCLK
R122
100K 42
MFX_I2C2_SCL
I2C_SCL
43
MFX_I2C2_SDA
I2C_SDA
R132 10K 45
I2C_ADDR
JP7 [N/A] 21
USART_TX
22
USART_RX
PH4
MFX_I2C2_SCL
I2C_SCL
PH5
MFX_I2C2_SDA
I2C_SDA
VDD1 one capacitor close to each MFX pins:
VDD, VDD 1, VDD 2, VDD 3
C132
C125 C129 C133 C131
4.7uF
100nF 100nF 100nF 100nF
MFX_SWCLK MFX_SWDIO
VDD1
CN9
[N/A]

Figure 32. IDD measurement

VDD
R123
0
VDD1
U16
18
GPIO0 JOY_SEL
19
GPIO1 JOY_DOWN
20
GPIO2 JOY_LEFT
39
GPIO3 JOY_RIGHT
40
GPIO4 JOY_UP
15
GPIO5 uSD_Detect
16
GPIO6 USB_PSON
17
GPIO7 USB_OVRCR
29
GPIO8 EXT_RESET
30
GPIO9 DSI_RST
31
GPIO10
32
GPIO11 LCD_DISP
33
GPIO12 LCD_RST
26
GPIO13
27
GPIO14
28
GPIO15
4 SH0
IDD_SH0
5 SH1
IDD_SH1/GPO5
6 SH2
IDD_SH2/GPO6
38
IDD_SH3/GPO7
3 CAL
IDD_CAL/GPO4
25 IDD_MEAS
IDD_MEAS
41 SB23
IDD_VDD_MCU VDD_MCU
I2C address: 0x84
VDD1
S
T4
STT7P2UH7
see note * 4
SH0 3 1
2
5
R100
6
100K SH0_D
R92
1_1%_0805
Current
T50_4
direction
bypass
to MCU
JP4
VDD_MCU
New Parts
+5V
R107 T8 6
100K STT7P2UH7 5
2
MFX_aGPIO1 3 1
4
VDD
T7 6
STT7P2UH7 5
2
3 1
4
+5V
VDD
R101
100K
CAL
T6 C50
G STT7P2UH7 decoupling capacitors
see note * close to TSZ122
D 100nF
CAL_D
4 T3 4 T2
STT7P2UH7 STT7P2UH7
see note * see note *
SH1 3 1 SH2 3 1
2 2
5 5
R99 R98
6 6
100K SH1_D 100K SH2_D
R91 R90 R93
24_1%_0805 620_1%_0805 10K_1%_0805
T50_6
Shunts
T5
STT7P2UH7 U
MFX_aGPIO1
New Parts
AMP_VDD
AMP_5V
R113
0
decoupling capacitors
close to TSZ122
R125 C52
357K 100nF
C56
3 U14A
1 TSZ122IST
V+
100nF R126
2
V-
11K
U13A
3 TSZ122IST
1 R119 6K04 R120 300K
V+
2
C53
V-
100nF
U14B
5 TSZ122IST R112
7 100 IDD_MEAS
differential 6
amplifier
C49
1uF
R114 300K
U13B
5 TSZ122IST
C51
7 R116 6K04
6
100nF
Title: IDD measurement / MFX (Multi Function eXpander)
Project: STM32L4Rx-EVAL
Size: A3 Reference: MB1313 Revision: B.1
Date: 3/31/2017 Sheet: 10 of 16