SAMHOP SM-R2

三合微科股份有限公司
SAMHOP Microelectronics Corp.
SM-T2/SM-R2
REMOTE CONTROLLER
WITH FIVE FUNCTION
GENERAL DESCRIPTION
FEATURES
The SM-T2 / SM-R2 is a pair of CMOS
chip, it was designed for remote controlled
car applications.
* Power supply : 2.4V - 5.0V
* Low stand-by current
* Five functions control
* Auto-power-off function for SM-T2
* Few external components are needed
The SM-T2 / SM-R2 has five control keys
for controlling the motions ( i.e. forward,
backward rightward, leftward and the turbo
function ) of the remote controller car.
APPLICATION
* Remote control car etc.
PIN ASSIGNMENTS (TOP VIEW)
RIGHTB
1
14
LEFTB
NC
2
13
NC
GND
3
12
OSCI
BACKWARDB
4
11
OSCO
FORWARDB
5
10
PC
TURBOB
6
9
VDD
SC
7
8
SO
VO2
GND
SI
OSCI
OSCO
RIGHT
LEFT
RDB
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
VI2
VO1
VI1
VDD
TURBO
FORWARD
BACKWARD
LDB
SM-T2
SM-R2
Page 1
V2.0 Mar 8,2002
三合微科股份有限公司
SAMHOP Microelectronics Corp.
SM-T2/SM-R2
REMOTE CONTROLLER
WITH FIVE FUNCTION
BLOCK DIAGRAM
TESTB
SM-T2
OSCI
TIMING
GENERATOR
OSCILLATOR
OSCO
RIGHTB
LEFTB
TURBOB
LATCH
CIRCUIT
ENCODING
CIRCUIT
PC
LOGIC
FORWARDB
SO
SC
FORWARDB
SM-R2
OSCI
TIMING
GENERATOR
OSCILLATOR
OSCO
SI
DECODING
CIRCUIT
AMP
COUNTER
PLA
RIGHT
VI1
VI2
LEFT
VO1
CONTROL
LOGIC
VO2
LATCH
TURBO
BACKWARD
FORWARD
LDB
RDB
Page 2
V2.0 Mar 8,2002
三合微科股份有限公司
SM-T2/SM-R2
SAMHOP Microelectronics Corp.
REMOTE CONTROLLER
WITH FIVE FUNCTION
PIN DESCRIPTION
SM-T2
Description
Pin No.
Pin Name
1
RIGHTB
2, 13
NC
3
GND
4
BACKWARDB
5
FORWARDB
6
TURBOB
7
SC
8
SO
9
VDD
10
PC
11
OSCO
Oscillator output pin
12
OSCI
Oscillator input pin
14
LEFTB
The rightward function will be selected, if this pin is connected to GND
Negative power supply
The backward function will be selected, if this pin is connected to GND
The forward function will be selected, if this pin is connected to GND
The turbo function will be selected, if this pin is connected to GND
Output pin of the encoding signal with carrier frequency
Positive power supply
Power control output pin
The leftward function will be selected, if this pin is connected to GND
SM-R2
Description
Pin No.
Pin Name
1
VO2
Inverter 2 output pin for power amplify
2
GND
Negative power supply
3
SI
4
OSCI
Oscillator input pin
5
OSCO
Oscillator output pin
6
RIGHT
Rightward output pin
7
LEFT
8
RDB
9
LDB
10
BACKWARD
11
FORWARD
Forward output pin
12
TURBO
TURBO output pin
13
VDD
14
15
VI1
Inverter 1 input pin for power amplify
VO1
Inverter 1 output pin for power amplify
16
VI2
Inverter 2 input pin for power amplify
Input pin of the encoding signal
Leftward output pin
Leftward function disable, if this pin is connected to GND
Backward output pin
Positive power supply
Page 3
VER 1.0, DEC. 2000
三合微科股份有限公司
SAMHOP Microelectronics Corp.
SM-T2/SM-R2
REMOTE CONTROLLER
WITH FIVE FUNCTION
FUNCTION DESCRIPTION
1. Code Format
Encode Rule (Bit Format)
1KHz
1KHz 50% Duty cycle
W1
500Hz 75% Duty cycle
W2
2. Data Format
W2 W2 W2 W2 (n) x W1 W2 W2 W2 W2 (n) x W1 W2 W2 W2 W2
No. of Function Code (n) W1
Decode Result
Function Key
End Code
4
W2
1
W2
2
10
Forward
Forward
16
Forward & Turbo
Forward
22
Turbo
Turbo
28
Turbo & Forward & Left
Forward & Left
34
Turbo & Forward & Right
Forward & Right
40
Backward
Backward
46
Backward & Right
Backward & Right
52
Backward & Left
Backward & Left
58
Left
Left
64
Right
Right
W2
3
W2
4
W2
••••••
W1 W1 W1 W1
1
2
3
4
W1
n-th
W2
W2
W2
W1
start code
function code
1 word
Page 4
V2.0 Mar 8,2002
三合微科股份有限公司
SAMHOP Microelectronics Corp.
SM-T2/SM-R2
REMOTE CONTROLLER
WITH FIVE FUNCTION
3. Encode/Decode Timing
(A)
Any function key
Encode output
1st word
2nd word
3rd word
1 2 3 4 5 6 7 8
end code
Decode output
9ms
9ms
(B)
••••••
SI
8 msec
(n) W1
8 msec
1ms
Decode output
T
T=17ms+(nW1)x1ms
Page 5
V2.0 Mar 8,2002
三合微科股份有限公司
SAMHOP Microelectronics Corp.
SM-T2/SM-R2
REMOTE CONTROLLER
WITH FIVE FUNCTION
ABSOLUTE MAXIMUM RATINGS
Symbol
Ratings
Unit
DC Supply Voltage
VDD
5
V
Input/Output Voltage
VIN
GND-0.3 to VSS +0.3
V
Operating temperature
Topt
-10~60
o
Storage Temperature
Tstg
-25~125
o
Parameter
C
C
COMMENTS
Never allow a stress to exceed the values listed under "Absolute Maximum Ratings", other
-wise the device would suffer from a permanent damage. Nor is a stress since an
extended exposure to the absolute maximum rating condition may also affect the reliability
of the device, if not causing a damage thereof.
DC ELECTRICAL CHARACTERISTICS
TX2 (VDD=4.5V, Fosc=128KHz, TA=25oC, unless otherwise specified.
Symbol
Min.
Typ.
Max.
Unit
Operating Voltage
VDD
3
4
5
V
Operating Current
Idd
─
─
2
mA
Stand-by Current
Istb
─
─
10
mA
µ
DC O/P Driving Current
Idrive
5
─
─
mA
AC O/P Driving Current
Idrive
5
─
─
mA
Faudio
500
─
1K
Hz
Parameter
AC O/P Frequency
RX2 (VDD=4.0V, Fosc=128KHz, TA=25oC, unless otherwise specified.
Symbol
Min.
Typ.
Max.
Unit
Operating Voltage
VDD
3
4
5
V
Operating Current
Idd
─
─
2
mA
O/P Driving Current
Idrive
1
─
─
mA
O/P Sinking Current
Isink
1
─
─
mA
Ftolerance
-20
─
20
%
Parameter
Effect Decoding Frequency
Variation
Page 6
V2.0 Mar 8,2002
三合微科股份有限公司
SM-T2/SM-R2
SAMHOP Microelectronics Corp.
REMOTE CONTROLLER
WITH FIVE FUNCTION
APPLICATION CIRCUIT
TX2
C12 C11 V7
.01µ 4.7 µ 4148
POWER
OFF
R2
4.7K
8
VDD
SO
9
10
PC
7
SC
TURBOB
6
5
CR1
27.145
V2
9014
L1
2.2µ
V1
9014
C7
68
C7
68
V6
9013
A1
ANTENNA
L2
2.2 µ
C8
.02 µ
C9
68
R5
33
K
B1
9V
R8
3.9K
V3
LED
R4
6.8K
R3
220K
FOR
11
OSCO
BACK
4
GND
OSCI
12
R10
1K
3
13
2
TESTB
RIHGTB
1
V5
8550
V4
4.7V
R12
10M
S5
OFF
LEFTB
14
S6
R7
200K
R11
10M
R9
330
C4
150
L4
6.8 µ
L3
C2 L4
1506.8
R1
100
C1
100
C6
0.2µ
R6
100
S1
S2 S3
S4
Page 7
V2.0 Mar 8,2002
三合微科股份有限公司
SM-T2/SM-R2
SAMHOP Microelectronics Corp.
REMOTE CONTROLLER
WITH FIVE FUNCTION
APPLICATION CIRCUIT
RX
C15 C12
.01µ 100µ
C13 C14
4.7µ .01µ
R12
510
C18 C19
100 µ .1 µ
A1
C6
18
V1
C1815
VD1
4.2V
L2
9V
V8
9013
C4
4.7 µ
C5
.02 µ
R16
100
R3
2.2K
V2
9013
C7
0.1µ
C9
0.1µ
R4
2.2M
R23
1K
R8
200K
R7
2.2K
C11
1000
V4
8550
V6
8050
R18
330
LDB
9
R25
1K
C17
.02 µ
ROB
R13
220
8
10
B/WARD
LEFT
R17
100
V7
9013
V5
8550
M1
R15
330
7
11
F/WARD
RIGHT
12
TURBO
5
OSCI
4
SI
3
GND
2
OSCO
13
VDD
14
VI1
15
VO2
16
VI2
1
VO2
R6
2.2M
C6
.02 µ
V3
8050
R24
1K
C8
470
R5
2.2K
C10
30
12V
R11
10
R2
180K
C3
3000
R1
1K
V9
8550
R20
100
6
L1
2.2 µ
R10
4.3K
C1
4
C2
47
V11
9013
V13
8550
R9
330
R14
220
V14
8550
M2
V12
8050
V15
8050
V10
9013
R19
330
R21
1K
R22
1K
Page 8
V2.0 Mar 8,2002