VK204-25-422 Matrix Orbital, VK204-25-422 Datasheet - Page 32

• Manufacturer Part Number: VK204-25-422
• Description: VF CHARACTER DISPLAY 20X4 RS422
• Manufacturer: Matrix Orbital
• Series: VK204-25r

Specifications of VK204-25-422

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

6.6. Set Auto Repeat
Sets key press repeat mode to typematic or hold. In typematic mode if a key press is held, the key value is
transmitted immediately, then 5 times a second after a 1 second delay. In hold mode, the key down value is
transmitted once when pressed, and then the key up value is sent when the key is released. Default is typematic.
Mode
6.7. Auto Repeat
Turns auto repeat mode off. Default is on (typematic).
6.8. Assign Keypad
Assigns the key down and key up values sent to the host when a key press is detected. A key up and key down
value must be sent for every key, a value of 255 will leave the key unaltered. Defaults are shown below.
Key Down
Key Up
Mode
Mode Off
Codes
U(85)
A(65)
F(70)
K(75)
P(80)
1 byte, 1 for hold mode or 0 for typematic
Table 23: Default Key Down Values
25 bytes, key down values
25 bytes, key up values
Q(81)
B(66)
G(71)
V(86)
L(76)
Dec
Hex
Dec
Hex
Key Down
Dec
Hex
M(77)
W(87)
H(72)
C(67)
R(82)
254 96
FE 60
254 213
254 126
FE D5
D(68)
N(78)
X(88)
S(83)
FE 7E
I(73)
Key Down Key Up
Key Down Key Up
O(79)
Mode
Mode
E(69)
T(84)
Y(89)
J(74)
p(112)
u(117)
k(107)
f(102)
a(97)
Table 24: Default Key Up Values
q(113)
g(103)
v(118)
l(108)
b(98)
Key Up
m(109)
w(119)
h(104)
r(114)
c(99)
d(100)
n(110)
x(120)
s(115)
i(105)
o(111)
e(101)
y(121)
t(116)
j(106)
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