The ARMexpress LITE is pin compatible with the Parallax BASIC Stamp.
BASIC Stamp is a registered trademark of Parallax Inc.
| /SOUT |
1 |
|
Serial Output, RS-232 compatable (active
low) |
| /SIN |
2 |
|
Serial Input, RS-232 compatable
(active low) |
| ATN |
3 |
|
connect to DTR with RS-232, when HIGH
reset the Node (active high) |
| /RES |
22 |
|
TTL level RESET (open collector with
2.7K pullup) (active low) |
|
IO0
IO1
IO2
IO3
IO4
IO5
IO6
IO7
IO8
IO9
IO10
IO11
IO12
IO13
IO14
IO15 |
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 |
PWM3
PWM1, RXD1
PWM2,
TXD1
AD0
AD2
AD5
AD1
AD6
AD7
PWM7
PWM5
PWM8
|
Input/Outputs -- user controlled
0-3.3V
level
4mA drive when configured as Outputs
5V tolerant
- use limiting resistor when connecting to a 5V
supply
EINT2
EINT0
|
| GND |
4,23 |
|
Ground (0V) |
| VDD |
24 |
|
Power 5-12V input power |
Alt-VDD
|
21
|
|
Alternate 5V input power (for Parallax compatability)
DO NOT exceed 5V on this pin
connection to pin
24 is preferred
this pin is pulled low during download of a C
program |
Dual Use AD pins
On reset or power up the AD pins are configured as digital
IOs on the ARMexpress LITE. When the BASIC accesses these pins they
are changed to analog inputs. After that they will remain analog
inputs until the next reset or power up.
PWM pins
All pins can be used for the software PWM function, and 6
pins can be used for the hardware driven HWPWM function (HWPWM channels 4 and 6
are not connected).
