Features• Compatible with all available ST MEMS adapter boards• Controlled by the STM32F401VE high-performance ARM Cortex™ - M4

microcontroller• Software-adjustable power circuitry to set sensor supply voltage from 0 to 3.6 V• Includes a DIL24 socket for easy MEMS adapter connection• Adjustable MEMS DIL24 power supply• DFU-compatible for USB microprocessor firmware update• USB 2.0 full-speed compliant• Embedded power monitoring circuitry on sensor supply voltage and current• Debugging connector for SWD/JTAG• Can be used with PC software like Unico GUI to manage and analyze MEMS

sensor data• RoHS compliant

DescriptionST's ready-to-use MEMS motherboard (STEVAL-MKI109V3) development platformlets engineers monitor the behavior of ST MEMS sensors, which can help acceleratetime to market and maximize the performance of new product designs. This board iscompatible with ST MEMS adapter boards and supports I2C and SPI data modes forvery high output data rates.

This professional MEMS tool features a high-performance STM32F401VEmicrocontroller and flexible power management with software-adjustable powercircuitry that allows you to set the sensor supply voltage from 0 to 3.6 V and replicatethe operating conditions in the intended application. The board includes accuratepower monitoring on sensor supply voltage and current, so external instruments arenot required.

You can run a graphical user interface (GUI) like Unico GUI (STSW-MKI109L forLinux, STSW-MKI109M for Mac OSX and STSW-MKI109W for Windows), on a hostPC to manage data flow from MEMS sensors and analyze MEMS sensor waveforms,which can help you explore the operating modes and power settings to optimizesensor performance and accuracy in your application.

The STM32F401VE ARM Cortex-M4 microcontroller with DSP and FPU can processmuch more than sensor readings such as barometric pressure and accelerometer orgyroscope data; it can handle complex datasets like optical or electronic imagestabilization (OIS and EIS, respectively) from ST’s advanced 6-axis inertial modules,and can be used to evaluate the latest generation of high-resolution MEMS sensorsfor industrial applications.

Product summary

ST MEMS adaptermotherboard based onSTM32F401VEcompatible ST MEMSadapters

STEVAL-MKI109V3

High-performanceaccess line, ARMCortex-M4 core withDSP and FPU, 512Kbytes Flash, 84 MHzCPU, ART Accelerator

STM32F401VE

MEMS evaluation kitsoftware package forLinux

STSW-MKI109L

MEMS evaluation kitsoftware package forMac OS X

STSW-MKI109M

MEMS evaluation kitsoftware package forWindows

STSW-MKI109W

Professional MEMS tool: ST MEMS adapters motherboard based on the STM32F401VE and compatible with all ST MEMS adapters

STEVAL-MKI109V3

Data brief

DB2985 - Rev 2 - April 2019For further information contact your local STMicroelectronics sales office.

www.st.com

1 Schematic diagrams

Figure 1. STEVAL-MKI109V3 circuit schematic (1 of 8)

USB_D-USB_D+

USB_Disc

Vin

VDD_3.6V

Vext_senseVusb_sense

Professional_MEMS_Tool_v1.0.5_Power

BT_TXBT_RTSBT_RX

BT_CTSBT_RST

VDD_3.6V

MISO_RFMOSI_RFSCK_RFCE_RF

Professional_MEMS_Tool_v1.0.5_Bluetooth

CTR_EN

VD

D_D

UT

VD

DIO

_DU

T

VD

DIO

VDD_3.6V

DIR_GP

CTR_EN_I2C_SDILOCK_1V98

TEST_Adapter_ConnectedTEST_3V6

PWM_TEST

TEST_5TEST_6

DIR_INT3_INT4DIR_DEN_CS_A

Log Signals

Professional_MEMS_Tool_v1.0.5_Adapter

CTR_EN

BT_TXBT_RTSBT_RX

BT_CTSBT_RST

USB_D-USB_D+

USB_Disc

VDD_3.6V

Control Signals A

Control Signals B

ADC_V_REF

Analog Signals A

Analog Signals B

MISO_RF

SCK_RFMOSI_RF

CE_RFDIR_GP

CTR_EN_I2C_SDILOCK_1V98

Vext_senseVusb_sense

TEST_Adapter_ConnectedTEST_3V6PWM_TEST

TEST_5TEST_6

DIR_INT3_INT4DIR_DEN_CS_A

Log Signals

Professional_MEMS_Tool_v1.0.5_MCU

ADC_V_REFV

DD

_DU

T

VD

DIO

_DU

T

VD

DIO

Vin

Control Signals A

Control Signals B

Analog Signals A

Analog Signals B

VDD_3.6V

Professional_MEMS_Tool_v1.0.5_Vdd_control_Idd_meas

STM32F401VET6

DB

2985 - Rev 2

page 2/11

STEVAL-M

KI109V3

Schematic diagram

s

Figure 2. STEVAL-MKI109V3 circuit schematic (2 of 8)

Vin

PWM_APWM_B

VDD_3.6V

VDDIO_DUTVDD_DUT

ADC_V_REF

Sense_Hi_B

Sense_Lo_A

Sense_Lo_B

Sense_Hi_ARANGE_100x_ARANGE_100x_B

Professional_MEMS_Tool_v1.0.5_Vdd_control

Sense_Lo_ASense_Hi_A

RANGE_2x_A

FILTER_BSense_Lo_ampl_B

Sense_Lo_B

ADC_I_A_(1)ADC_I_A_(2)

VDDIO

Sense_Lo_ampl_A

4.3V_B

FILTER_A_(1)

Vin

ADC_V_B

FILTER_A_(2)

ADC_V_REF

Sense_Hi_B

ADC_I_B

ADC_V_A

RANGE_20x_ARANGE_50x_A

RANGE_5x_B

RANGE_5x_A

RANGE_20x_B

RANGE_2x_B

4.3V_A

VDD_3.6V

Professional_MEMS_Tool_v1.0.5_Idd_measurement_2CH_lin

4.3V_A

Sense_Lo_ampl_A

ADC_log_I_B

Sense_Lo_ampl_B

4.3V_B

Sense_Hi_B

ADC_log_I_A

Sense_Hi_AADC_V_REF

VDD_3.6V

Professional_MEMS_Tool_v1.0.5_Idd_measurement_2CH_log

R_100x_A

R_20x_AR_5x_A

PWM_A

R_50x_A

R_2x_A

Control Signals A

Control Signals A

RANGE_50x_A

FILTER_A_(2)

RANGE_20x_A

RANGE_100x_APWM_A

R_100x_B

R_20x_BR_5x_B

PWM_B

R_2x_B

Control signals B

Control Signals B

RANGE_20x_B

FILTER_B

RANGE_5x_B

RANGE_100x_BPWM_B

ADC_I_A_(2)

ADC_log_I_AADC_V_A

ADC_I_A_(1)

FILTER_A( 1)FILTER_A (2)

Analog Signals A

ADC_I_A_(2)ADC_V_A

ADC_I_A_(1)

ADC_I_B

ADC_log_I_BADC_V_B

FILTER_B

Analog Signals B

Analog Signals BADC_I_BADC_V_BADC_log_I_B

RANGE_100x_ARANGE_100x_B

PWM_APWM_B

ADC_V_REF

ADC_V_REF

ADC_V_REFADC_log_I_AADC_log_I_B VDDIO

ADC_V_REF

VDDIO_DUTVDD_DUT

Vin

ADC_log_I_AAnalog Signals A

RANGE_2x_B

RANGE_5x_ARANGE_2x_A

FILTER_A_(1)

VDD_3.6V

2 x STR2N2VH5 2 x STT7P2UH72 x 2STR2230

6655

7 7

2 x TSV632IQ2T

D

SEL S2

S1

1 x AS21P2TLR

2233

1 1

2 x TSZ122IQ2T

2233

1 1

5 x TSZ122IQ2T

6655

7 7

1 x TSV632IQ2T

TS3431CILT

D

SEL S2

S1

4 x AS21P2TLR

DB

2985 - Rev 2

page 3/11

STEVAL-M

KI109V3

Schematic diagram

s

Figure 3. STEVAL-MKI109V3 circuit schematic (3 of 8)

47uFC22

GND

Dual channel Vdd control

Au = 1.20

100k

R13100k

R12

22nFC8

22nFC10

22nFC9

GND

GNDGND

100k

R31100k

R30

22nFC15

22nFC17

22nFC16

GND

GNDGND

GNDGND

GND

3.6V

470k

R25

470k

R44

6.8RR53

10R

R71

0.1% 0805

GND

5Vin

1kR70

0.1%100kR69

10uFC30

3k3R59

10RR130

10uFC25

GND

100k

R1315Vin

GND

To MEMS

100nFC23

GND

PWM + Filter

VDD_set_A VDD_set_B

47uFC32

GND

6.8RR113

10R

R94

0.1% 0805

5Vin

1kR92

0.1%100kR91

10uFC40

3k3R144

10RR140

10uFC34

GND

100k

R1325Vin

GND

100nFC33

GND

To MEMS

VDD_set_A VDD_set_B

ADC_V_REF

4.7uF

C28

4.7uF

C36

VDD_DUT VDDIO_DUT

CH_A

CH_A

CH_B

CH_B

PWM controlled Power Supply

AS21P2TLR

D 10

SEL 9

S12

S21

U5A

AS21P2TLR

D 5

SEL 4

S17

S26

U5BRef 3.00V Ref 3.00V

20kR19

20kR36

100kR22

100kR43

PDTC115EE,115

3

1

2

T12

PDTC115EE,115

3

1

2

T6

BC857BT,115

3

1

2

T3 BC857BT,115

3

1

2

T8

12

J13

12

J14

5VinVin

FB1

PWM_A PWM_B

AS2

1P2T

LRV

cc3

GN

D8

U5C

VDD_3.6V 3.6V

5Vin

GND

Au = 1.20

RANGE_100x_A

PWM_A PWM_B

RANGE_100x_B

Sense_Hi_A

Sense_Lo_A

Sense_Hi_B

Sense_Lo_B

2233

1 1

TSV632IQ2T

U1A

6655

7 7

TSV632IQ2T

U1B

84

TSV

632I

Q2T

U1C

22

33 1 1

TSV632IQ2T

U2A

66

55 7 7

TSV632IQ2T

U2B

84

TSV

632I

Q2T

U2C

100nFC77

100nFC78

22RR157

22RR158

5Vin

GND GND

100nFC79

GND

GND GND

4k7

R175

4k7

R1774k7

R604k7

R176

4k7

R1004k7

R178

100nFC99

100nFC100

3

1

2

2STR2230T4

1

3

4256

STT7P2UH7

T231

2

STR2N2VH5

T7

3

1

2

STR2N2VH5

T11

1

3

4256

STT7P2UH7

T10

3

1

2

2STR2230T9

DB

2985 - Rev 2

page 4/11

STEVAL-M

KI109V3

Schematic diagram

s

Figure 4. STEVAL-MKI109V3 circuit schematic (4 of 8)

TS3431CILTU10

GND GND

5Vin_1

V1 - Dual Channel Idd measurement - linAu = 1 - 2 - 5 - 10 Differential Amp. Au = 5

Ref 3.00V

GND GNDGND

100k

R80.1%

100k

R23

0.1%

20kR7

0.1%

20k

R18

0.1%

GND

10kR20

GND

Sense_Hi_A

10k

R11

Sense_Lo_A

10k

R24

0.1%

10k

R280.1%

GND

470k

R29

470k

R1GND

GND

ADC_V_REF

Sense_Lo_BVDDIO

To Level Shifters VL

CH_A

CH_B

10uF

C39

GND

5Vin_1

GND

4.3V_A

GND

AS21P2TLR

D10

SEL9

S1 2

S2 1

U8A

AS21P2TLR

D5

SEL4

S1 7

S2 6

U8B

AS2

1P2T

LRV

cc3

GN

D8

U8CA

S21P

2TLR

Vcc

3G

ND

8

U9C

3k6R99

0.1%

5k1R95

0.1%

Ref 3.00V

120k

R97

270k

R96

470RR89

5Vin_1Vin

100pFC12

100pFC7

470nFC6

150pF

C13

GND

GND

AS2

1P2T

LRV

cc3

GN

D8

U13C 1uFC35

GND

10R

R86

22R

R98

22R

R93

10uFC41

10uFC37

4.3V_B 100nF

C38

100nF

C42

4.3V_A

4.3V_A 4.3V_B

4.3V_B4.3V_B

Sense_Hi_A

Sense_Lo_ampl_A

Sense_Lo_AADC_I_A_(1) ADC_V_A

FILTER_A_(1)RANGE_2x_A

RANGE_5x_A

GND

GND

Au = 10 - 20 - 50 - 100 Differential Amp. Au = 10

100k

R30.1%

100k

R56

0.1%

10kR57

GND

Sense_Hi_A

10k

R21

Sense_Lo_A

470k

R61

470k

R62GND

GND

AS21P2TLR

D10

SEL9

S1 2

S2 1

U13A

AS21P2TLR

D5

SEL4

S1 7

S2 6

U13B

100pFC20

100pFC19

150pF

C24

GND

470nFC21

ADC_I_A_(2)

FILTER_A_(2)RANGE_20x_A

RANGE_50x_A

GND

GND

GND

AS2

1P2T

LRV

cc3

GN

D8

U17C

4.3V_A

Au = 1 - 5 - 20 - 100 Differential Amp. Au = 5 - 10

100k

R640.1%

100k

R142

0.1%

20kR63

0.1%

20kR141

0.1%

10kR143

GND

10k

R67

10k

R148

0.1%

10k

R1500.1%

GND

470k

R151

470k

R156GND

GND

AS21P2TLR

D10

SEL9

S1 2

S2 1

U17A

AS21P2TLR

D5

SEL4

S1 7

S2 6

U17B

100pFC64

100pFC27

470nF

C26

150pF

C66

GND

Sense_Hi_B

Sense_Lo_ampl_B

Sense_Lo_BADC_I_B

ADC_V_B

FILTER_BRANGE_5x_B

RANGE_20x_B

GND

GND

Sense_Lo_B

10k

R2

0.1%

10k

R55

0.1%

AS21P2TLR

D10

SEL9

S1 2

S2 1

U9A

AS21P2TLR

D5

SEL4

S1 7

S2 6

U9B

20kR65

0.1%

20kR149

0.1%

RANGE_2x_B

4.3V_B

27k

R27

0.1%

27k

R58

0.1%

3k0R9

0.1%

4k7

R14

0.1%

82kR10

24k

R15

0.1%

3k0

R4

0.1%

2k4

R51

0.1%

300RR48

0.1%

27k

R147

0.1%

3k0

R84

0.1%

300R

R87

0.1%

1k5R85 0.1%

20kR88 0.1%

6k8R116 0.1%

137kR66

4.3V_A4.3V_A

4.3V_B

2233

1 1

TSZ122IQ2T

U3A

6655

7 7

TSZ122IQ2T

U3B

84 TS

Z122

IQ2T

U31C

2233

1 1

TSZ122IQ2T

U15A

6655

7 7

TSZ122IQ2T

U15B

GND

4.3V_A

84 TS

Z122

IQ2T

U15C

2233

1 1

TSZ122IQ2T

U16A

6655

7 7

TSZ122IQ2T

U16B

GND

84 TS

Z122

IQ2T

U16C

2233

1 1

TSV632IQ2T

U11A

6655

7 7

TSV632IQ2T

U11B

84 TS

V63

2IQ

2T

U11C

100nFC80

22R

R159

GND

5Vin_1

4.3V_A

GND

4.3V_A

100nFC82

GND

470k

R160

GND

2233

1 1

TSZ122IQ2T

U31A

6655

7 7

TSZ122IQ2T

U31B

100kR16

100kR33 GND

4.3V_A

84 TS

Z122

IQ2T

U3C

4.3V_A

100nFC81

GND

4.3V_B

GND

84 TS

Z122

IQ2T

U32C

100kR128

10kR163

GND

10kR164

GND

10kR165

GND

2233

1 1

TSZ122IQ2T

U32A

6655

7 7

TSZ122IQ2T

U32B

GND

100nFC58

GND

100nFC67

GND

100pFC11

100R

R17

100R

R50

100R

R166

GND

100pFC65

1k5

R26

1k5

R101

Sense_Lo_A

3.6V

3.6V

3.6V

3.6V

3.6V

3.6V

100nFC87

GND

GND

1k5

R174

3.6V

GND

GND

22nFC88

22nFC91

100pFC86

VDD_3.6V

RB520S30T1GD10

RB520S30T1GD11

RB520S30T1GD12

RB520S30T1GD13

RB520S30T1GD14

RB520S30T1GD15 4.3V_B

100nFC96

GND

100nFC92

8k2R49

470RR52

0.1%

DB

2985 - Rev 2

page 5/11

STEVAL-M

KI109V3

Schematic diagram

s

Figure 5. STEVAL-MKI109V3 circuit schematic (5 of 8)

+Vusb

Power Supply:

GND

GND

GND

3.6V

GND

GND

+Vusb

D-D+

+Vusb

USB D-

USB D+

USB Connection:+Vusb

GND

GNDGND

USB D+

3.6V 3.6V

Vin

USB_D-

USB_D+ USB_Disc

GNDGNDGND

GND

22R

R134

22R

R135

47kR90

1k

R136

10kR133

1k5

R139

470R

R137

100nFC63

100nFC59

100nFC85

1uFC4

LDK220M36RVin1

EN3

2

ByPass/Adj 4Vout 5

GND

U25+Vext Vin

GNDGND

100nFC61

1uFC60

USBLC6-2P6

I/O11

I/O23GND2

I/O2 4VBUS 5

I/O1 6

ESD

U27

VDD_3.6V

D6

DP 3DM 2V+ 1

ID 4US

B

GND 5

0

J5

BC846S6

2

1

T16ABC846S

3

5

4

T16B

1k5R124

1k5R125

GND

GND

GND

BC857BT,115

3

1

2

T22

NTA4153NT1G

3

1

2

T20

NTA4153NT1G

3

1

2

T21

100kR68

GNDGND

BAS16XV2T1G D7

100kR54

100kR119

NO

TA

ssem

bled

Vext_sense

Vusb_sense

10kR167

0RR202

0R

R201

D201

36kR138

NOT Assembled

NOT Assembled12

J4

1

3

4256

STT7P2UH7

T17

3

1

22STR2230

T18

3

1

22STR2230

T19Power Supply:- VDD_3.6V ... Power supply for micro & BT- Vin ... 5V for Idd meas. analog circuits

& VDD_DUT/ VDDIO_DUT

Ext. Power5V

Automatic switchingover from Vusb to Vext

USB Connection:- USB device enumeration signal LED- USB ESD filter

DB

2985 - Rev 2

page 6/11

STEVAL-M

KI109V3

Schematic diagram

s

Figure 6. STEVAL-MKI109V3 circuit schematic (6 of 8)

CS_A

INT3

DEN

INT2INT1

SCLSDASDO

CS

VDD_DUT GP

INT4

VDDIO_DUT

GND

DIL24 Device Adapter:

VDDIO

CS_A_uP

INT4

DEN

INT1_uP

SCLSDASDO

GP

INT3_uP

GP_uP

DEN_uP

INT3INT4_uP

INT2_uP

VDDIO

Level Translation:

CS_uP CS

3.6V

3.6V

GP

DENCS_A

INT3INT4

CS

SDOSDASCL

INT2INT1

SDO_xSD_xSC_xCS_x

Logic_signals1

CTR_EN

SDO_uPSDA_uPSCL_uP

VDD_DUTVDDIO_DUT

VDDIO VDDIO

123456789101112

242322212019181716151413

J2

123456789

101112

J1

242322212019181716151413

J3

3.6VVDD_3.6V

VDDIO_DUTVDD_DUTINT1

INT2

SN74AVC4T245RSVR

GND10

Vcc_A3 Vcc_B 2

1B2 141B1 15

1OE 1

1A27 1A16

1DIR42DIR5

2B2 122B1 132A29 2A18

2OE 16

GND 11

U28

1.2 to 3.6V

SN74AVC4T245RSVR

GND10

Vcc_A3 Vcc_B 2

1B2 141B1 15

1OE 1

1A27 1A16

1DIR42DIR5

2B2 122B1 132A29 2A18

2OE 16

GND 11

U29

1.2 to 3.6V

NTS0104GU12

GND6

Vcc_A 1Vcc_B11

B29 B110

OE 12

A2 3A1 2

A3 4A4 5B38

B47

U30

1.65 to 5.5V

VDDIO3.6V

DIR_GP

4.7uFC72

GND

3.6V

100nFC73

100nFC74

100nFC75

4.7uFC68

GND

100nFC69

100nFC70

100nFC71

VDDIO

CS_A

33kR145

CTR_EN

CTR_EN

3.6V

33kR146

100kR152100kR153

100kR154100kR155

CTR_EN_I2C_SDI

LOCK_1V98

22nFC97

GND

22nFC98

GND

TEST_Adapter_Connected

TEST_3V6

PWM_TEST

TEST_5

TEST_5

TEST_6

TEST_6

DIR_INT3_INT4

DIR_DEN_CS_A

VDDIO3.6V

NTS0104GU12

GND6

Vcc_A 1Vcc_B11

B29 B110

OE 12

A2 3A1 2

A3 4A4 5B38

B47

U33

1.65 to 5.5V

CTR_EN_I2C_SDI

CTR_EN_I2C_SDI

CS_x_uP

SDO_x_uPSD_x_uPSC_x_uP

CS_x

SDO_xSD_xSC_x

CS_x

SDO_xSD_xSC_x

100nFC101

100nFC102

TEST_5TEST_6

Log Signals

DIL24 Device Adapter- VDD and VDDIO pin separated

DB

2985 - Rev 2

page 7/11

STEVAL-M

KI109V3

Schematic diagram

s

Figure 7. STEVAL-MKI109V3 circuit schematic (7 of 8)

3.6V

GND

Bluetooth Module Connection:

GND

GNDGND

3.6V

GND GND

BT_TX_s

BT_RTS_s

GND

GNDBT_TX

BT_RTS

BT_RX

BT_CTS

BT_RST 12345678

J9

GND

3.6V

GND

SCK_RFMOSI_RFMISO_RF

CE_RF

VDD_3.6V

10nFC3

SN74AVC2T244DQMR

GND5

Vcc_A 1Vcc_B8

B26B17

OE 4A2 3A1 2

U22

1.2 to 3.6V

LDK120PU25R

Vin6

EN4

2

ByPass/Adj 3Vout 1

GND

5

N/C

U19

GND

IRQ_RF / CS_SPI

CS_RF

100nFC2

100nFC1

33kR5

33kR6 1

23

J8

2.5V

2.5V

DB

2985 - Rev 2

page 8/11

STEVAL-M

KI109V3

Schematic diagram

s

Figure 8. STEVAL-MKI109V3 circuit schematic (8 of 8)

BOOT0

JTMS_SWDIOJTCK_SWCLKJTDI

NTRST

CS_uP

SPI2_SDA

SPI2_SCLSDO_uP

JTDO

SW1

SW2

JNTRST

I2C_SCLI2C_SDA

GP_uP

GND

3.6V

BOOT0BOOT1

Not Mounted

BOOT Mode Selection:

I2C_SCLI2C_SDA

SCL_uPSDA_uP

SPI2_SCLSPI2_SDA

3.6V

I2C and SPI connection:

LED

1

3.6V 3.6V

LED

2

3.6VLE

D3

Signal LEDs:

SW1 SW2

3.6V 3.6V

GND GND

User Switches: Interrupt LED signalization:

3.6V 3.6V

GND

JTMS_SWDIOJTCK_SWCLK

GND

JTDOJTDI

JNTRSTNRST

JTAG/SWO Interface: 3.6V

CTR_EN

BT_TX

BT_RTS

BT_RXBT_CTS

BT_RST

USB_D-USB_D+

USB_Disc

1uFC43

100nFC44

100nFC52

GNDGND

GND

4.7uFC51

100nFC53

100nFC54

100nFC55

100nFC56

100nFC57

GND

3.6V

100nFC49

GND

3.6V

3.6V

ABM8-16.000MHZ-B2-T

13

24

X118pF

C47

18pF

C48GND

GND

GND

10kR120

10kR121

10kR122

10kR123

10kR129

10kR104

10kR105

10kR109

10kR110

10kR111

10kR112

4k7R117

4k7R118

100kR126

100kR127

D1 D2 D3D4 D5

330RR107

470RR108

220RR106 220R

R115330RR114

3

1

2

T143

1

2

T13

1 23 45 67 89 10

J6

BOOT1

100R

R103

FB2

1uFC45

100nFC46

22R

R102

ADC_V_REF

VDD_3.6V

SCK_RF

MOSI_RFMISO_RF

CE_RF

PWM_APWM_B

LED1

LED2LED3

CS_RFIRQ_RF / CS_SPI

INT1_uP

INT2_uP

INT2_uPINT1_uP

DIR_GP

STM32F401VET6

LQFP100

PA3 / ADC3 / USART2_RX / TIM2_CH4 / TIM5_CH4 / TIM9_CH226

VSS 74VDD75

ADC14 / PC4 33ADC15 / PC5 34

PB0 / ADC8 / TIM1_CH2N / TIM3_CH335PB1 / ADC9 / TIM1_CH3N / TIM3_CH436

PB2 / BOOT137

PB10 / SPI2_SCK / I2S2_CK / I2C2_SCL / TIM2_CH347

VCAP148

VSS 10VDD19

PB12 / SPI2_NSS / I2S2_WS / I2C2_SMBA / TIM1_BKIN51PB13 / SPI2_SCK / I2S2_CK / TIM1_CH1N52PB14 / SPI2_MISO / I2S2ext_SD / TIM1_CH2N53PB15 / SPI2_MOSI / I2S2_SD / TIM1_CH3N / RTC_REFIN54

I2S2_MCK / USART6_TX / TIM3_CH1 / SDIO_D6 / PC6 63

USART6_CK / TIM3_CH3 / SDIO_D0 / PC8 65I2S_CKIN / I2C3_SDA / TIM3_CH4 / SDIO_D1 / MCO_2 / PC9 66PA8 / I2C3_SCL / USART1_CK / TIM1_CH1 / OTG_FS_SOF / MCO_167

PA9 / I2C3_SMBA / USART1_TX / TIM1_CH2 / OTG_FS_VBUS68PA10 / USART1_RX / TIM1_CH3 / OTG_FS_ID69PA11 / USART1_CTS / USART6_TX / TIM1_CH4 / OTG_FS_DM70PA12 / USART1_RTS / USART6_RX / TIM1_ETR / OTG_FS_DP71

PA13 / *JTMS-SWDIO*72

VSS 27VDD28

PA14 / *JTCK-SWCLK*76PA15 / *JTDI* / SPI1_NSS / SPI3_NSS / I2S3_WS / TIM2_CH1/ TIM2_ETR77

SPI3_SCK / I2S3_CK / SDIO_D2 / PC10 78I2S3ext_SD / SPI3_MISO / SDIO_D3 / PC11 79

SPI3_MOSI / I2S3_SD / SDIO_CK / PC12 80

PB3 / *JTDO-SWO* / SPI1_SCK / SPI3_SCK / I2S3_CK / I2C2_SDA / TIM2_CH289PB4 / *NJTRST* / SPI1_MISO / SPI3_MISO / I2S3ext_SD / I2C3_SDA / TIM3_CH190PB5 / SPI1_MOSI / SPI3_MOSI / I2S3_SD / I2C1_SMBA / TIM3_CH291PB6 / I2C1_SCL / USART1_TX / TIM4_CH192PB7 / I2C1_SDA / USART1_RX / TIM4_CH293

Vpp / BOOT094

PB8 / I2C1_SCL / TIM4_CH3 / TIM10_CH1 SDIO_D495PB9 / SPI2_NSS / I2S2_WS / I2C1_SDA / TIM4_CH4 / TIM11_CH1 / SDIO_D596

VSS 49VDD50

VBAT6

RTC_TAMP1 / RTC_OUT / RTC_TS / PC13 7OSC32_IN / PC14 8

OSC32_OUT / PC15 9

PH0 / OSC_IN12PH1 / OSC_OUT13

NRST14

ADC10 / PC0 15ADC11 / PC1 16

ADC12 / SPI2_MISO / I2S2ext_SD / PC2 17ADC13 / SPI2_MOSI / I2S2_SD / PC3 18

VDDA22

PA0 / ADC0 / USART2_CTS / TIM2_CH1 / TIM2_ETR / TIM5_CH1 / WKUP23PA1 / ADC1 / USART2_RTS / TIM2_CH2 / TIM5_CH224PA2 / ADC2 / USART2_TX / TIM2_CH3 / TIM5_CH3 / TIM9_CH125

PA4 / ADC4 / SPI1_NSS / SPI3_NSS / I2S3_WS / USART2_CK29PA5 / ADC5 / SPI1_SCK / TIM2_CH1 / TIM2_ETR30PA6 / ADC6 / SPI1_MISO / TIM1_BKIN / TIM3_CH131PA7 / ADC7 / SPI1_MOSI / TIM1_CH1N / TIM3_CH232

SPI4_SCK / TRACECLK / PE2 1TRACED0 / PE3 2

SPI4_NSS / TRACED1 / PE4 3SPI4_MISO / TIM9_CH1 / TRACED2 / PE5 4SPI4_MOSI / TIM9_CH2 / TRACED3 / PE6 5

VSS 99VDD100

STM32F401VET6VDD11

VSSA/VREF-20VREF+21

TIM1_ETR / PE7 38TIM1_CH1N / PE8 39

TIM1_CH1 / PE9 40TIM1_CH2N / PE10 41

SPI4_NSS / TIM1_CH2 / PE11 42SPI4_SCK / TIM1_CH3N / PE12 43SPI4_MISO / TIM1_CH3 / PE13 44SPI4_MOSI / TIM1_CH4 / PE14 45

TIM1_BKIN / PE15 46

PD8 55PD9 56

PD10 57PD11 58

TIM4_CH1 / PD12 59TIM4_CH2 / PD13 60TIM4_CH3 / PD14 61TIM4_CH4 / PD15 62

I2S3_MCK / USART6_RX / TIM3_CH2 / SDIO_D7 / PC7 64

VCAP273

PD0 81PD1 82

TIM3_ETR / SDIO_CMD / PD2 83SPI2_SCK / I2S2_CK / USART2_CTS / PD3 84

USART2_RTS / PD4 85USART2_TX / PD5 86

SPI3_MOSI / I2S3_SD / USART2_RX / PD6 87USART2_CK / PD7 88

TIM4_ETR / PE0 97PE1 98

U24

12

J7

12

BT3

12

BT2

12

BT1

ADC_I_A_(2)ADC_V_A

ADC_I_A_(1)

ADC_log_I_A

ADC_I_B

ADC_V_BADC_log_I_B

RANGE_20x_BRANGE_5x_B

RANGE_2x_B

RANGE_100x_B

RANGE_50x_ARANGE_20x_A

RANGE_100x_A

RANGE_5x_ARANGE_2x_A

CS_uP

SDO_uPSDA_uPSCL_uP

INT1_uPINT2_uP

GP_uPDEN_uPCS_A_uP

INT3_uPINT4_uP

CS_A_uPDEN_uPCS_A_uP

INT3_uPINT4_uP

2.2uFC76

GND

2.2uFC50

N/A in BGA100

CTR_EN_I2C_SDI

100kR1610.1%

LOCK_1V981k

R162 100nFC84

GND

I2C3_SDA

I2C3_SDA

I2C3_SCL

I2C3_SCL

R_100x_A

R_20x_AR_5x_A

PWM_A

R_50x_A

R_2x_A

Control Signals A

Control Signals A

RANGE_50x_A

FILTER_A_(2)

RANGE_20x_A

RANGE_100x_APWM_A

R_100x_B

R_20x_BR_5x_B

PWM_B

R_2x_B

Control signals B

Control Signals B

RANGE_20x_B

FILTER_B

RANGE_5x_B

RANGE_100x_BPWM_B

ADC_I_A_(2)

ADC_log_I_AADC_V_A

ADC_I_A_(1)

FILTER_A( 1)FILTER_A (2)

Analog Signals A

ADC_I_A_(2)ADC_V_A

ADC_I_A_(1)

ADC_I_B

ADC_log_I_BADC_V_B

FILTER_B

Analog Signals B

Analog Signals BADC_I_BADC_V_BADC_log_I_B

ADC_log_I_AAnalog Signals A

RANGE_2x_B

RANGE_5x_ARANGE_2x_A

FILTER_A_(1)

FILTER_A_(1)FILTER_A_(2)

FILTER_B

Vext_sense

Vusb_sense

100kR173

100kR171

100kR170

100kR172

GND

22nFC93

GND

22nFC94

Vext_sens/2Vext_sens/2

Vusb_sens/2

Vusb_sens/2

12

J10GND

12

J12GND

Production Test Start GPI

12

J11

Production Tester

GPI

Cal

GPICal3.6V

TEST_Adapter_Connected

TEST_3V6

PWM_TEST

TEST_5

TEST_6

I2C3_SCL

DIR_DEN_CS_A

DIR_INT3_INT4

10k

R179

10k

R180

SW2

GPDENCS_A

INT3INT4

CS

SDOSDASCL

INT2INT1

SDO_xSD_xSC_xCS_x

Logic_signals1

CS_x_uP

SDO_x_uPSD_x_uPSC_x_uP

CS_x_uP

SDO_x_uPSD_x_uP

SC_x_uP

Log Signals

Interconnection Check

BOOT Mode Selection:- Default boot from FLASH (BOOT0 low, BOOT1 low)

DB

2985 - Rev 2

page 9/11

STEVAL-M

KI109V3

Schematic diagram

s

Revision history

Table 1. Document revision history

Date Version Changes

04-Jul-2016 1 Initial release.

12-Apr-2019 2Updated cover page Section Features and Section Description

Added Section Product summary table

STEVAL-MKI109V3

DB2985 - Rev 2 page 10/11

IMPORTANT NOTICE – PLEASE READ CAREFULLY

STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to STproducts and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. STproducts are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.

Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design ofPurchasers’ products.

No license, express or implied, to any intellectual property right is granted by ST herein.

Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.

ST and the ST logo are trademarks of ST. For additional information about ST trademarks, please refer to www.st.com/trademarks. All other product or servicenames are the property of their respective owners.

Information in this document supersedes and replaces information previously supplied in any prior versions of this document.

© 2019 STMicroelectronics – All rights reserved

STEVAL-MKI109V3

DB2985 - Rev 2 page 11/11