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 user’s 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 VDD power supply line. Features • Complete HTS221 pinout (SPI & I²C interface) for a standard DIL 24 socket • Fully compatible with STEVAL-MKI109V2 motherboard • RoHS compliant This adapter is supported by the STEVALMKI109V2 motherboard which includes a highperformance 32-bit microcontroller functioning as a bridge between the sensor and a PC, on which it is possible to use the downloadable graphical user interface (Unico GUI), or dedicated software 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 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com Schematic diagram 1 STEVAL-MKI141V1 Schematic diagram Figure 1. STEVAL- MKI141V2 circuit schematic VDD R1 Do not mount CS CS U1 HTS221 VDD 1 SCL 2 VDD GND SCL SDA 5 GND 4 SDA VDD 3 GND C2 2.2uF INT C1 100nF 6 VDD R2 Do not mount DocID026084 Rev 1 JP1 1 2 3 4 5 6 7 8 9 10 11 12 JP2 24 23 22 21 20 19 18 17 16 15 14 13 Header 12Header 12 INT 2/4 VDD SDA SCL CS INT GND STEVAL-MKI141V1 2 Revision history Revision history Table 1. Document revision history Date Revision 17-Mar-2014 1 Changes Initial release. DocID026084 Rev 1 3/4 4 STEVAL-MKI141V1 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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