101-0492 Rabbit Semiconductor, 101-0492 Datasheet - Page 21
101-0492
Manufacturer Part Number
101-0492
Description
INTERFACE OP6800 W/ETHERNET PORT
Manufacturer
Rabbit Semiconductor
Datasheet
1.101-0492.pdf
(110 pages)
Specifications of 101-0492
Module/board Type
Single Board Computer Module
For Use With/related Products
SR9160
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
316-1060
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3.2 Digital I/O
3.2.1 Digital Inputs
The OP6800 has eight digital inputs, IN00–IN07, each with a current-limiting resistor of
27 kΩ, and protected over a range of –36 V to +36 V. The inputs are all pulled up to +5 V
as shown in Figure 9.
The OP6800 also has five digital inputs, IN08–IN12, each with a current-limiting resistor
of 12 kΩ, protected over a range of –25 V to +25 V, and pulled up to +5 V.
The actual switching threshold for IN00–IN12 is approximately 2.40 V. Anything below
this value is a logic 0, and anything above is a logic 1
IN13–IN17 are connected in parallel with five of the keypad buttons. These inputs are nor-
mally pulled up, but pulling one of these inputs down is the equivalent of pressing the cor-
responding keypad key remotely.
User’s Manual
NOTE: Remote keypad signal inputs IN13–IN17 are not protected, and can only
handle a voltage range from 0 to +5 V. These inputs were designed solely to
facilitate a remote keypad, and should not be used for other purposes.
Table 2. Remote Keypad Operation
Keypad Key
Figure 9. OP6800 Digital Inputs
6 (
0 (
1 (
2 (
3 (
)
)
)
)
)
Remote Keypad
Signal Inputs
IN13
IN14
IN15
IN16
IN17
.
17
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