Datasheet

revolution
Revolution Education Ltd. Email: [e-mail] Web: www.rev-ed.co.uk Version 2.0 01/09/2002
28-PINPROJ.P65
5
28-PIN PROJECT BOARD
Digital Inputs
The digital inputs have a 10k
pull down resistor on each
input pin.
The equivalent input circuit is
shown right.
The input ribbon cable connector has the following pin arrangement (wire 1 is marked
with red ink).
MICRO-
CONTROLLER
input pin
10k
6V
0V
digital inputs
V1+
in 0
in 1
in 2
in 3
in 4
in 5
in 6
in 7
0V
wire 1
20 V1+
19 V1+
18 V1+
17 0
16 V1+
15 1
14 V1+
13 2
12 V1+
11 3
10 V1+
94
8 V1+
75
6 V1+
56
4 V1+
37
20V
10V