Page 1
The SM5162 is a RF remote control
encoder paired with SM5172. It utilizes
CMOS technology. The chip has 12 bits
of 3-state address pins that provides 3
12
codes. SM5162/ SM5172 pair is suitable
for use on remote controller.
PIN ASSIGNMENTS
GENERAL DESCRIPTION
APPLICATIONS
* Car Security
* Garage Door
* Ceiling Fan
* Home Security/Automatic
* Toys
FEATURES
* CMOS technology
* Low power consumption
* 12 tri-state pins
* Wide range operating voltage, Vcc = 3- 12V
* Up to six data bits
* High noise immunity
OCT. 2001
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
A0
A1
A2
A3
A4
A5
A6/D5
A7/D4
Vss
V
DD
Dout
OSC1
OSC2
TE
A11/D0
A10/D1
A9/D2
A8/D3
SM5162
SM5162S
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
A0
A1
A2
A3
A4
A5
A6/D5
A7/D4
Vss
NC
V
DD
Dout
OSC1
OSC2
TE
A11/D0
A10/D1
A9/D2
A8/D3
NC
SM5162
3
12
RF ENCODER
S
AM
H
OP
Microelectronics Corp.
Page 2
BLOCK DIAGRAM
OCT. 2001
Code Generator
Address
Control Logic
System Timing Generator
LED
Output
Driver
TE
OSC
OSC1
OSC2
A0
A11/D0
A1
A2
A3
A4
A5
A6/D5
A7/D4
A8/D3
A9/D2
A10/D1
Dout
Vss
VDD
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
A0
A1
A2
A3
A4
A5
A6/D5
A7/D4
Vss
V
DD
Dout
OSC1
OSC2
LED
A11/D0
A10/D1
A9/D2
A8/D3
SM5162-DX
SM5162S-DX
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
A0
A1
A2
A3
A4
A5
A6/D5
A7/D4
Vss
NC
V
DD
Dout
OSC1
OSC2
LED
A11/D0
A10/D1
A9/D2
A8/D3
NC
SM5162
3
12
RF ENCODER
S
AM
H
OP
Microelectronics Corp.
Page 3
OCT. 2001
PIN FUNCTION
No.
1
2
3
4
5
6
7
Pin Name
A0
A1
A2
A3
A4
A5
A6/D5
I/O
I
I
I
I
I
I
I/O
Function Operation
Address input, each pin can be set to "0",
"1" , or floating.
Address input or data output.
Negative power supply.
Address input or data output.
8
9
10
A7/D4
VSS
A8/D3
I/O
POWER
I/O
11
12
A9/D2
A10/D1
I/O
I/O
13
A11/D0
I/O
14
15
OSC1
I
Resistor connected between these two pins
determine the system clock.
16
OSC2
O
17
Dout
O
Serial output of encoded signals.
18
VDD
POWER
Positive power supply.
TE
I
Enables transmission.
LED
O
LED Output.
SM5162
3
12
RF ENCODER
S
AM
H
OP
Microelectronics Corp.
FUNCTION DESCRIPTION
1. Data Format
Page 4
OCT. 2001
OSC
BIT "F"
BIT "1"
*a
3a
BIT "0"
TE
Dout
Synchronisation Bit waveform is :
*a is 4 OSC Clock
a
32a
12 bits address
Sync.
a
SM5162
3
12
RF ENCODER
S
AM
H
OP
Microelectronics Corp.
Page 5
2. Frame Format
OCT. 2001
When SM5162 is used for no data, transmitting format is :
Synchronisation Bit waveform is :
When data type of SM5162 is used, address bits will decrease accordingly. For example, in
3 data type where address is 9 bits, transmitting format is :
SM5162/SM5172 has 12 bits including a maximum of 6 data bits.
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9 A10 A11
Sync.
According to
first transmission bit
in real signal A0 will be receive first.
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9 A10 A11 Sync.
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9 D1
D0
Sync.
A0
A1
A2
A3
A4
A5
A6
A7
A8 D2 D1
D0
Sync.
A0
A1
A2
A3
A4
A5
A6
A7 D3 D2 D1
D0
Sync.
A0
A1
A2
A3
A4
A5 D5 D4 D3 D2 D1
D0
Sync.
A0
A1
A2
A3
A4
A5
A6 D4 D3 D2 D1
D0
Sync.
SM5172
SM5172-M2/L2
SM5172-M4/L4
SM5172-M5/L5
SM5172-M6/L6
SM5172-M3/L3
a
32a
12 bits address
Sync.
9 address bits
Sync.
3 data bits
SM5162
3
12
RF ENCODER
S
AM
H
OP
Microelectronics Corp.
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