for further information contact your local stmicroelectronics sales office. may 2014 docid025444 rev 1 1/6 STEVAL-MKI143V1 logmotion motherboard for mems adapter boards data brief features ? compatible with all available st mems adapter boards ? controlled by the stm32f103rg high- performance arm cortex?-m3 microcontroller ? includes a dil24 socket for easy mems adapter connection ? on-board 3 v linear voltage regulator ? dfu compatible for usb microprocessor firmware update ? usb 2.0 full-speed compliant ? debugging connector for swd/jtag ? rohs compliant description the STEVAL-MKI143V1 (logmotion) evaluation board is the motherboard in a complete ready-to- use platform designed to aid in the evaluation of mems devices mounted on adapter boards. this STEVAL-MKI143V1 uses an stm32f103rg microcontroller, which allows the storage of data coming from the sensor on the adapter board onto a microsd card. the microcontroller can also function as a bridge between the sensor on the adapter board and a pc either through the unico graphical user interface (gui), or through dedicated software routines for customized applications. the unico gui is available for download from st.com. www.st.com
schematic diagrams STEVAL-MKI143V1 2/6 docid025444 rev 1 1 schematic diagrams figure 1. power supply circuit schematic 1 vin 2 vout 5 u4 3 en gnd bypass 4 lds3985xx30 c25 33nf c9 100nf c19 1uf 1 2 j3 c11 external power supply vbat 100nf + 10uf c23 vdd (tant.) usb_5v gnd v+ 2 1 dm 3 gn n d c 5 dp 4 j1 mi ni-usb b c3 100nf + 10uf c16 usbdm usbdp r1 1.5k usb_disc 1 2 i/o1 3 i g /o n 2 dv i/ b o u 2 s 4 u1 i/o1 5 6 usblc6-2p6 usb_5v gnd v+ 1 vin 2 vout 5 u3 3 en gnd bypass 4 lds3985xx30 c24 33nf c6 100nf c18 1uf c7 100nf + 10uf c22 (tant.) v+ vdd_out 30 ohm 3a l1 c21 10nf 3 1 2 q1 bsh205 vbat usb_5v r15 4.7k v+ d6 3v0 r14 360 usb_5v usb_tp d5 d schottky gspg29102013di940
docid025444 rev 1 3/6 STEVAL-MKI143V1 schematic diagrams 6 figure 2. microcontroller circuit schematic figure 3. microsd card circuit schematic 1 vin 2 vout 5 u4 3 en gnd bypass 4 lds3985xx30 c25 33nf c9 100nf c19 1uf 1 2 j3 c11 external power supply vbat 100nf + 10uf c23 vdd (tant.) usb_5v gnd v+ 2 1 dm 3 gn n d c 5 dp 4 j1 mi ni-usb b c3 100nf + 10uf c16 usbdm usbdp r1 1.5k usb_disc 1 2 i/o1 3 i g /o n 2 dv i/ b o u 2 s 4 u1 i/o1 5 6 usblc6-2p6 usb_5v gnd v+ 1 vin 2 vout 5 u3 3 en gnd bypass 4 lds3985xx30 c24 33nf c6 100nf c18 1uf c7 100nf + 10uf c22 (tant.) v+ vdd_out 30 ohm 3a l1 c21 10nf 3 1 2 q1 bsh205 vbat usb_5v r15 4.7k v+ d6 3v0 r14 360 usb_5v usb_tp d5 d schottky gspg29102013di940 rsv 1 2 ncs 3 mosi 4 vdd 5 sck 6 gnd 7 rsv iso 8 usd gn m d1 9 1 gnd2 1 0 1 gnd4 u5 gnd3 12 cs_sd mosi_sd sck_sd miso_sd vdd gspg29102013di950
schematic diagrams STEVAL-MKI143V1 4/6 docid025444 rev 1 figure 4. adapter circuit schematic 0 11 1 2 3 4 5 6 7 8 9 1 12 j4 header 12 0 11 1 2 3 4 5 6 7 8 9 1 12 j5 header 12 vdd_out hp gp_gpio1 sdo_dev sda_dev scl_dev pd cs_dev st int2 int1 r16 4.7k r17 4.7k vdd vdd i2c_scl i2c_sda scl_dev sda_dev fs gspg29102013di955
docid025444 rev 1 5/6 STEVAL-MKI143V1 revision history 6 2 revision history table 1. document revision history date revision changes 23-may-2014 1 initial release.
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