HW description
UM1454
12/28
Doc ID 022085 Rev 2
J3
7
JTAG connector - JTMS
8
JTAG connector - GND (system ground 0 V)
9
JTAG connector - JTCK
10
JTAG connector - GND (system ground 0 V)
11
JTAG connector - (R6 - 10 k
Ω
pull-down connection)
12
JTAG connector - GND (system ground 0 V)
13
JTAG connector - JTDO
14
JTAG connector - GND (system ground 0 V)
15
JTAG connector - nRESET
16
JTAG connector - GND (system ground 0 V)
17
JTAG connector - (R7 - 10 k
Ω
pull-down connection)
18
JTAG connector - GND (system ground 0 V)
19
JTAG connector - (R8 -10 k
Ω
pull-down connection)
20
JTAG connector - GND (system ground 0 V)
J4
1
Mini-USB-RS232 bridge connector: USB_VCC - (+5 V USB power supply)
2
Mini-USB-RS232 bridge connector: USB_D- - (USB DATA- signal)
3
Mini-USB-RS232 bridge connector: USB_D+ - (USB DATA+ signal)
4
Not connected
5
Mini-USB-RS232 bridge connector: USB_GND - (USB GND)
JP1
Jumper
Configurable power jumper. See
for configuration cases
JP2
Jumper
Configurable boot jumper. See
for configuration cases
JP3
Jumper
Configurable serial jumper. RTS pin on the Zigbee module. See
for
configuration cases
JP4
Jumper
Configurable serial jumper. CTS pin on the Zigbee module. See
for
configuration cases
JP5
Jumper
Configurable serial jumper. RX pin on the Zigbee module. See
for
configuration cases
JP6
Jumper
Configurable serial jumper. TX pin on the Zigbee module. See
for
configuration cases
SW1
Pushbutton nRESET - pushbutton acting on the STM32W108CB reset pin
SW2
Pushbutton FW configurable pushbutton - this pushbutton acts on the STM32W108CB “PB6” pin
SW3
Pushbutton FW configurable pushbutton - this pushbutton acts on the STM32W108CB “PB0” pin
LED1
Green
LED showing the presence of the 3.3 V board internal voltage
LED2
Yellow
User configurable LED showing status of PA7 internal signal - (supplied by +3.3 V board
voltage)
LED3
Red
User configurable LED showing status of PB7 internal signal - (supplied by +3.3 V board
voltage)
Table 4.
Board connections and configuration (continued)
Description
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