2 / 2 6 / 2 0 0 2 2 : 0 6 P M 2 / 2 6 / 2 0 0 2
1 9
N M I Y - 0 0 3 1
I / O C O N N E C T O R S
I/ O Connectors
The standard configuration of the NMIY-0031 board provides three I/O connectors and one
power connector.
POWER - J12
+5 VDC power is applied at J12. J12 is located along a short edge of the board between J1, VSC,
and VR1, 7805 locations. The terminal nearest the 7805 is for the positive lead, and the other
terminal, nearest to the reset jumper is ground. When connecting power, be certain you use
correct polarity.
KEYPAD - J3
J3 is the keypad connector. J3 is located between U1 and J4, near the user component area. Pin 1
is located nearest the edge of the board. J3 is designed to support a 4 x 5 matrix-type keypad. Pin
connections are:
Pin #
Signal
Keypad
Name
1
PB.0
Y1
2
PB.1
Y2
3
PA.2
X3
4
PA.1
X2
5
PB.2
Y3
6
PA.0
X1
7
PA.3
X4
8
PB.3
Y4
9
PB.4
Y5
Input from J3 is latched by U5. See the
Programming
section for details on using the latch.
Summary of Contents for NMIY-0031
Page 1: ...2 2 6 2 0 0 2 2 0 6 P M 1 NMIY 0031 Single Board Computer Covers NMIY 0031 V1 0 4 22 96 ...
Page 2: ...2 2 6 2 0 0 2 2 0 6 P M 2 ...
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