Hardware Documentation armStone
™A9
| 16 of 26
4.11
66 Pin Feature connector
This 2.54mm connector supports CAN, RS232, Audio, ADC Input, PWM output, TTL serial
ports, keyboard matrix and GPIOs.
Function
Pin
Pin
Function
VCC3.3 (J5 pin 26)
1
2
VCC5
XGPIO0/COL0
3
4
XGPIO1/COL1
XGPIO2/COL2
5
6
XGPIO3/COL3
XGPIO4/COL4
7
8
XGPIO5/COL5
XGPIO6/COL6
9
10
XGPIO7/COL7
GND
11
12
XGPIO8/SPI_CLK
TX1/GPIO0
13
14
XGPIO9/SPI_CSn
RX1/GPIO1
15
16
I2CLK/SPI_MOSI
I2DAT/SPI_MISO
17
18
XGPIO10/ROW0
XGPIO11/ROW1
19
20
XGPIO12/ROW2
XGPIO13/ROW3
21
22
XGPIO14/ROW4
XGPIO15/ROW5
23
24
XGPIO16/ROW6
XGPIO17/ROW7
25
26
XGPIO18 (J5 pin1)
GND
27
28
PWMOUT0
ADC_IN0
29
30
PWMOUT1
ADC_IN1
31
32
PWMOUT2
ADC_IN2
33
34
Backlight On
ADC_IN3
35
36
RXD2 rs232
GND
37
38
TXD2 rs232
VCC3.3
39
40
VCC5
MIC1 (Audio pin 1)
41
42
GND
nc
43
44
LINEIN_R
LINEOUT_R
45
46
GND
GND
47
48
LINEIN_L
LINEOUT_L
49
50
GND
RESETBTN
51
52
VCC3.3
nc (COM pin1)
53
54
nc
RX0
55
56
RTS0
TX0
57
58
CTS0
nc
59
60
nc
GND
61
62
VCC5 (COM keypin)
CANRX
63
64
CANTX
BOOTSEL
65
66
VCC3.3
Table 7: armStone Feature Connector
On default a 9 pin connector is mounted on pin 53..61 to use a COM port standard adapter
cable.
Italic signals does have a 4k7 pull-up on the module.
