HP module EVK hardware user guide – XM112, XB112
,
LH112
Page 20 of 41
© 2018 by Acconeer – All rights reserved
2022-08-25
3.1.6.3 2x20 pin header (J3)
The 2x20 pin header (1.27mm pitch) is not mounted. The reason is that it is intended for Acconeer
internal use only. All the interfaces available in the 2x20 pin header are also available in the other
connectors. The pinout of the 2x20 pin header is shown in Table 4.
Table 4. The pinout of J3.
Pin Number
Signal
Pin Number
Signal
1
NC
2
ERASE
3
GND
4
GND
5
NC
6
UART0_RX_TX
7
SPI_MOSI
8
UART0_TXRX
9
SPI_MISO
10
GND
11
GND
12
SPI_CLK
13
SPI_SS
14
GND
15
NC
16
TRACESWO
17
GND
18
SWDCLK
19
GND
20
GND
21
GND
22
GND
23
GND
24
1V8
25
GND
26
GND
27
GND
28
MCU_GPIO
29
GND
30
MCU_INT
31
GND
32
GND
33
GND
34
SWDIO
35
GND
36
NRST
37
GND
38
1V8
