UM1759 datasheet(18/50 Pages) STMICROELECTRONICS

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Hardware description

UM1759

18/50

DocID026279 Rev 1

3.4

STEVAL-IKR001Vx

The SPIRIT1 DK is made up of two units connected to one PC or two PCs with USB cables.

Each unit is composed of an antenna for the selected band and two PCBs:

•

RF motherboard

•

RF module

3.4.1

STEVAL-IKR001Vx (RF motherboard)

The previous version of the motherboard is supported. The supply voltage is provided or by

USB cable or by external power supply. The switch S1 turns on or off the SPIRIT1 DK - MB.

Figure 14 highlights some features of the board as follow:

The power supply sources: USB connector and jack connector for external power

supply. USB connector is used also for I/O with the microcontroller with a virtual COM

port exposed to the PC.

Switch to turn ON or OFF the board.

JTAG/SWD connector.

Three button and a joystick:

SCM_PS, not used

RESET, for resetting the MB board

Push_Button, used to enter in DFU mode

Joystick, not used

Test point (TP), to probe the SPI signals, the 4 GPIOs of the SPIRIT1, the shutdown of

the SPIRIT1 (SDN), the supply voltage of the SPIRIT1 (VCCRF). The list of signals

available is:

GND

VCC_RF

GPIO SDN (the pin to drive in SHUTDOWN the SPIRIT1)

SPI CSn

SPI MISO

SPI MOSI

SPI SCKL

SPIRIT1 GPIO2

SPIRIT1 GPIO3

SPIRIT1 GPIO1

SPIRIT1 GPIO0

GND

Five LEDs

SMA connector

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