STEVAL-MKI141V2 STMicroelectronics

STEVAL-MKI141V2 HTS221 humidity sensor adapter board for standard DIL24 socket (full pinout) Data brief Description The STEVAL-MKI141V2 is an adapter board designed to facilitate the evaluation of MEMS devices in the HTS221 product family. The board offers an effective solution for fast system prototyping and device evaluation directly within the users own application. The board also offers an example reference design for custom PCB implementation. The STEVAL-MKI141V2 can be plugged into a standard DIL 24 socket. The adapter provides the full HTS221 pinout and comes ready-to-use with the required decoupling capacitors on the V DD power supply line. Features This adapter is supported by the STEVAL- Complete HTS221 pinout (SPI & IC interface) MKI109V2 motherboard which includes a high- for a standard DIL 24 socket performance 32-bit microcontroller functioning as Fully compatible with STEVAL-MKI109V2 a bridge between the sensor and a PC, on which motherboard it is possible to use the downloadable graphical user interface (Unico GUI), or dedicated software RoHS compliant routines for customized applications. The STEVAL MKI109V2 must be upgraded to eMotion V3.0.7 FW or later, and the Unico GUI must be rel. 3.0.1.6beta or later. Note that to obtain accurate measurements, it is recommended to connect the STEVAL-MKI141V2 to the STEVAL-MKI109V2 using cables of 20-30 cm in length, in order to exclude any thermal effects from devices on the main board. March 2014 DocID026084 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.comSchematic diagram STEVAL-MKI141V1 1 Schematic diagram Figure 1. STEVAL- MKI141V2 circuit schematic VDD Do not mount R1 CS VDD JP1 JP2 1 24 2 23 VDD U1 3 22 SDA HTS221 4 21 SCL 5 20 C1 C2 CS VDD 1 5 GND 6 19 100nF 2.2uF VDD GND 7 18 SCL 2 4 SDA SCL SDA 8 17 9 16 VDD 10 15 GND INT 11 14 12 13 Do not mount R2 Header 12Header 12 GND INT 2/4 DocID026084 Rev 1 3 6 INT CS