STMicroelectronics STEVAL-IKR002V1D

Overview

STEVAL-IKR002V1D from STMicroelectronics is an SPIRIT1-based 169 MHz sub-GHz RF transceiver daughterboard supporting 2-FSK/GFSK/MSK/GMSK/OOK/ASK modulation, programmable data rates from 1–500 kbps, and AES-128 encryption; used for low-power wireless sensor node evaluation in industrial telemetry and smart metering.

For engineers reviewing the STEVAL-IKR002V1D datasheet, STEVAL-IKR002V1D pinout, STEVAL-IKR002V1D application, or STEVAL-IKR002V1D equivalent, key selection factors include its integrated SPIRIT1 transceiver's -123 dBm sensitivity, 9.2 mA RX / 18 mA TX current at +11 dBm output, low-duty-cycle operation mode, and hardware-accelerated AES-128 engine.

Technical Context

The board implements the SPIRIT1 (SPM1001) transceiver IC operating in the 169 MHz ISM band with fully configurable digital baseband including packet handler, CRC generator/checker, and automatic ACK/retransmission protocol engine. It supports both fixed and variable packet length modes with preamble/sync word detection.

RF front-end includes matching network optimized for 169 MHz, onboard ceramic antenna, and DC-DC converter for efficient power delivery to the transceiver. Communication with host MCU occurs exclusively via 4-wire SPI interface with dedicated GPIOs for IRQ, SDO, SDI, and SCLK.

Key Specifications

Availability

STEVAL-IKR002V1D is available at Aetrix Electronics and suitable for industrial telemetry, smart utility metering, and wireless sensor network prototyping requiring stable component supply and documented RF performance validation.

Supply support for STEVAL-IKR002V1D 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, designing and manufacturing microcontrollers, analog ICs, power devices, and sensors for industrial, automotive, and IoT applications.

This daughterboard belongs to ST's STEVAL (ST Evaluation) platform family, engineered to accelerate RF subsystem validation and firmware development for sub-GHz wireless protocols in resource-constrained embedded systems.

FAQ

What microcontroller interfaces are supported by the STEVAL-IKR002V1D?

The board uses a standard 4-wire SPI interface (SCLK, SDI, SDO, nSS) with dedicated interrupt (IRQ) and ready (GPIO0) pins. No UART, I²C, or USB bridging is implemented - host MCU must drive SPI commands and manage packet framing per SPIRIT1 register map.

Does the STEVAL-IKR002V1D include an antenna?

Yes, it integrates a tuned 169 MHz monopole ceramic chip antenna mounted directly on the PCB. The antenna is impedance-matched to 50 Ω and does not require external RF connectors or cabling for basic range testing.

Can the STEVAL-IKR002V1D operate in frequency bands other than 169 MHz?

No - the RF matching network, crystal oscillator, and antenna are fixed for 169 MHz operation. While the SPIRIT1 IC supports 315/433/868/915 MHz bands, this board's layout and components are not reconfigurable for alternate frequencies.

Is the AES-128 encryption engine accessible directly from the host MCU?

Yes - the SPIRIT1 IC exposes AES registers via SPI. Host firmware can load keys, initiate encryption/decryption of payload buffers, and read status flags without modifying transceiver firmware; all cryptographic operations execute in dedicated hardware.