Datasheet

4
revolution
Revolution Education Ltd. Email: [e-mail] Web: www.rev-ed.co.uk Version 1.0 01/09
AXE091.PMD
AXE091 PICAXE DEVELOPMENT BOARD
Using the PICAXE Development Board:
Important Notes:
1. Up to 3 PICAXE chips can be fitted at any one time in the following sockets:
- Top socket - either 08 or 14 or 20
- Centre socket - 18
- Lower socket - either 28 or 40
2. Only one power source should be connected at any one time.
3. PICAXE chip polarity (pin 1 to top left) should be observed at all times.
Failure to observe any of these points may result in damage to the PICAXE chip.
PICAXE Input/Output Pin Connections:
Every pin of the PICAXE chip is brought out to a numbered position on a header
beside the IC socket:
- top socket for 08 / 14 / 20 pin devices
- centre socket for 18 pin devices
- lower socket for 28 / 40 pin devices
Note that on the left hand side of the lower socket there are separate header points
for the 40 pin (outer row) and 28 pin (inner row) parts. On all other parts the
headers are common for all size parts.
The following connections are already made via the PCB:
08/14/20 pin socket
- power and serial download circuit
18 pin socket
- power and serial download circuit
- 4k7 pull up and reset switch on PICAXE reset pin
28/40 pin socket
- power and serial download circuit
- 4k7 pull up and reset switch on PICAXE reset pin
- 8MHz resonator
Computer Connection:
Only use the AXE027 PICAXE USB cable
or AXE026 serial cable.
The standard PICAXE 22k/10k download
circuit is used on each of the three
download sockets, aswell as the fourth (inverted “N” RS232 communication)
socket at the bottom
of the board.
x
x
x
x
x
PICAXE
serial out
serial in
0V
22k
10k
Above view
a
b
c
a
b
c