LICAL-ENC-HS001 Linx Technologies Inc, LICAL-ENC-HS001 Datasheet - Page 3

• Manufacturer Part Number: LICAL-ENC-HS001
• Description: IC ENCODER HS SERIES 20-SSOP
• Manufacturer: Linx Technologies Inc
• Series: HSr
• Type: Encoderr

Specifications of LICAL-ENC-HS001

• Package / Case: 20-SSOP
• Applications: RF, IR
• Mounting Type: Surface Mount
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Figure 4: HS Series Encoder Pin Assignments
D0-D7
SEL_BAUD
SEL_TIMER
GND
KEY_IN
TX_CNTL
DATA_OUT
MODE_IND
CREATE_PIN
SEND
V
Table 3: HS Series Encoder Pin Assignments
NOTE:
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
ensure that the input lines are never floating, either by using external resistors, by tying the lines directly to
GND or V
Table 4: HS Series Encoder MODE_IND Definitions
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PIN ASSIGNMENTS
ENCODER MODE_IND INDICATION TABLE
Get Key Mode
Create PIN Mode
Enter PIN Mode
*Flash = ON for 200ms and OFF for 200ms
CC
Pin Name
The MODE_IND line is the primary means of indicating the state of the encoder
to the user. The table below provides definitions for the MODE_IND signals.
CC
, or by use of other circuits to control the line state.
10
ON for 1 second after a successful key transfer.
Flashes* for 15 seconds while waiting for user to enter a PIN. It
stops flashing when the fourth number is entered or when it
times out.
ON when each PIN is entered.
1
2
3
4
5
6
7
8
9
1, 2, 13, 14, 17-20
CC
Pin Number
D6
D7
SEL_BAUD
SEL_TIMER
GND
GND
KEY_IN
TX_CNTL
DATA_OUT
MODE_IND
) at all times or the operation may not be predictable. The designer must
15, 16
5, 6
LICAL-ENC-HS001
10
11
12
3
4
7
8
9
CREATE_PIN
I/O
—
—
O
O
O
I
I
I
I
I
I
SEND
External Transmitter Control Line
Create PIN Mode Selection Line
PIN Time-Out Timer Select Line
VCC
VCC
D5
D4
D3
D2
D1
D0
Baud Rate Selection Line
Encoder Send Data Line
Mode Indicator Output
Positive Power Supply
Serial Data Output
Data Input Lines
20
19
18
17
16
15
14
13
12
11
Description
Key Input Pin
Ground
PIN DESCRIPTIONS
Data Lines
SEL_BAUD
SEL_TIMER
GND
KEY_IN
TX_CNTL
DATA_OUT
MODE_IND
CREATE_PIN
SEND
V
CC
The encoder has eight data lines, D0 through D7. when the SEND line goes high,
the states of these lines are recorded, encrypted for transmission, then
reproduced on the outputs of the decoder.
This line is used to select the baud
rate of the serial data stream. The
state of the line allows the selection of
one of two possible baud rates, as
shown in the adjacent table.
The baud rate must be set before power-up. The encoder will not recognize any
change in the baud rate setting after it is on.
This line is used to set the length of inactive time before PIN reentry is required.
These lines are connected to ground.
This line is used to input the key from the decoder.
This line goes high when the SEND line goes high and low when the SEND line
goes low. This can be used to power up external devices, such as a transmitter,
when the encoder is sending data, and power it down when the encoder is
asleep. It can also be used to drive a LED for visual indication of transmission.
The encoder will output an encrypted serial data stream on this line. This line can
directly interface with all Linx RF transmitter modules or it can be used to
modulate an IR diode.
This line will be activated while the encoder is in Get Key Mode or Create Pin
Mode. It allows the connection of a LED or other indicator for user feedback.
When this line is taken high, the encoder will enter Create PIN Mode and allow
the user to set a Personal Identification Number (PIN) to control encoder access.
When this line goes high, the encoder will record the states of the data lines,
encrypt them for transmission, and send the packet as a serial bit stream through
the DATA_OUT line at the baud rate selected by the state of the SEL_BAUD line.
This is the positive power supply.
Table 5: Baud Rate Selection Table
SEL_BAUD
0
1
Baud Rate (bps)
28,800
4,800
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