Laird BL654 - Page 23

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23
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Table 8: Module pins exposed by plated through holes
Plated Through Holes or Header Connector
BL654 Module Signals Exposed
J4
4
BL654 pin plated holes for access:
▪ SI0_ 00
▪ SI0_ 01
J44 connects to SIO_00 and SIO_01 via 0R
resistors R127 and R128.
By default, the optional external 32.768 kHz
crystal circuit is not connected to BL654 as
SB8 and SB9 are open.
J4
7
J2
6
J3
7
J4
5
J3
9
BL654 pin plated holes for access:
▪ SI0_ 23
▪ SI0_ 21
▪ SI0_ 22
▪ SI0_ 19
▪ SI0_ 20
▪ SI0_ 17
▪ SI0_ 16
▪ SI0_ 15
▪ SI0_ 13
▪ SI0_ 14
J26 Connects SIO_35 to LED1
J26 jumper fitted (default).
J37 Connects SIO_14 to LED2
J37 jumper fitted (default).
J45 Connects SIO_15 to LED3
J45 jumper fitted (default).
J39 Connects SIO_16 to LED4
J39 jumper fitted (default).
NOPOP (PIN HEADER,2.54mm 1X2P)
J44
1
1
2
2
SIO_00_Header
SIO_01_Header
GND
R1270R
R1280R
SIO_00_Header
GND Y3
32.768KHz,20ppm,9pF
1
2
SIO_00XL1
SIO_01
C70
10pF,50V
C71
12pF, 50V
XL2 SIO_01_Header
SB8 NOPOP (Solderbridge_Open)
1
1
2
2
SB9 NOPOP (Solderbridge_Open)
1
1
2
2
SIO_23
SIO_14
SIO_15
SIO_13
SIO_16
SIO_22
SIO_17
SIO_21
SIO_19
SIO_20
J47
NOPOP (PIN HEADER,2.54mm 1X10P)
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
SIO_15
SIO_14
SIO_13
SIO_16
PIN HEADER,2.54mm 1X2P
J37
1
1
2
2
LED2
LED4
PIN HEADER,2.54mm 1X2P
J39
1
1
2
2
PIN HEADER,2.54mm 1X2P
J45
1
1
2
2
LED3
LED1
PIN HEADER,2.54mm 1X2P
J26
1
1
2
2