Pin Assignments
1
2
3
4
5
6
7
8
9
10
D6 LICAL-DEC-MS001 D5
D7 D4
SEL_BAUD0 D3
SEL_BAUD1 D2
GND VCC
GND VCC
LATCH D1
RX_CNTL D0
TX_ID DATA_IN
MODE_IND LEARN
20
19
18
17
16
15
14
13
12
11
Figure 8: HS Series Encoder Pin Assignments
Pin Descriptions
Pin Number
1, 2, 13, 14,
17–20
3
4
5, 6
7
8
9
10
11
12
15, 16
Name
D0–D7
SEL_BAUD
SEND_COPY
GND
COPY_IN
CREATE_KEY
KEY_OUT
MODE_IND
LEARN
DATA_IN
V CC
I/O
O
I
I
I
I
O
O
I
I
Description
Data Input Lines
Baud Rate Selection Line
Send Copy Activation Line
Ground
Copy Input Line
Create Key Activation Line
Key and Transmitte rID Output Line
Mode Indicator Output
Learn Mode Activation Line
Data Input Line
Positive Power Supply
None of the input lines have internal pull-up or pull-down resistors. The input lines must
always be in a known state (either GND or V CC ) at all times or the operation may not be
predictable. The designer must ensure that the input lines are never floating, either by using
external resistors, by tying the lines directly to GND or V CC , or by use of other circuits to
control the line state.
Figure 9: Pin Descriptions
– 5 –
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