STMicroelectronics STEVAL-MKI098V1

Overview

STEVAL-MKI098V1 from STMicroelectronics is a MEMS demonstration board built around the LPR410AL dual-axis analog gyroscope, enabling rapid evaluation of angular rate sensing in inertial measurement systems. It supports two operational modes-Analog Working Mode (AWM) for direct analog output access and Digital Working Mode (DWM) with ST7 microcontroller-based signal acquisition, USB interface, and GUI-driven visualization.

For engineers reviewing the STEVAL-MKI098V1 datasheet, STEVAL-MKI098V1 pinout, STEVAL-MKI098V1 application, or STEVAL-MKI098V1 equivalent, this board delivers validated sensor interfacing, mode-selectable signal conditioning, real-time PC-based data monitoring, and configurable analog/digital output routing for motion-sensing prototyping.

Technical Context

The board integrates the LPR410AL MEMS gyroscope with ±410°/s full-scale range and analog voltage outputs (±2.5 V), coupled to an ST72F651AR6T1 8-bit microcontroller that handles digital sampling, USB communication (via ST662ABD transceiver), and control pin management. Power is supplied via USB or external connector, supporting both 3.3 V and 5 V domains.

In AWM, the microcontroller is disabled and raw analog outputs (OutAna1/OutAna2) are routed directly to JP1 header pins; in DWM, the MCU digitizes signals using on-chip ADCs, formats data for USB transmission, and enables real-time GUI display and device register configuration via I²C and dedicated control lines (ST, PD, HP).

Key Specifications

Availability

STEVAL-MKI098V1 is available at Aetrix Electronics and suitable for inertial navigation prototyping, robotics stabilization testing, and industrial motion-sensing validation requiring stable component supply and pre-validated sensor-to-PC signal chain integration.

Supply support for STEVAL-MKI098V1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in MEMS sensors, microcontrollers, power management, and automotive-grade ICs.

The STEVAL-MKI098V1 belongs to ST's MEMS demonstration board product line, designed specifically to accelerate development of angular rate sensing applications using LPR-series gyroscopes in both analog and digital system architectures.

FAQ

What are the two operational modes supported by the STEVAL-MKI098V1?

The board operates in Analog Working Mode (AWM), where the ST7 microcontroller is disabled and raw analog outputs from the LPR410AL gyroscope are accessible on JP1, and Digital Working Mode (DWM), where the MCU acquires, processes, and streams sensor data over USB using a dedicated GUI. Mode selection is controlled by jumper settings and power source.

How is sensor data transferred to a PC?

Data transfer occurs via USB Mini-B connector (J1) using the ST662ABD USB transceiver and ST72F651AR6T1 firmware. In DWM, the MCU digitizes analog outputs, packages them into defined USB frames, and enables real-time plotting and register control through ST-provided GUI software downloaded from st.com.

Which control functions are exposed on dedicated headers?

JP2 exposes ST (self-test activation), JP3 controls PD (power-down), JP4 enables HP (high-pass filter), and JP5–JP9 provide access to VCONT, FILTVDD, Vref, and output scaling resistors. These allow hardware-level configuration of gyroscope behavior without firmware modification.

Is external power required to use analog outputs?

No - analog outputs are active in AWM when powered via USB or external supply. The board defaults to AWM on power-up; no external power beyond USB 5 V or 3.3/5 V supply is needed to access OutAna1/OutAna2 on JP1, as internal regulators condition Vddf and bias circuitry for the LPR410AL.