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TECHNICAL DATA
INA3010
INFRARED REMOTE CONTROL
TRANSMITTER RC-5
The INA3010 is intended as a general purpose (RC-5) infrared
remote control system for use where a low voltage supply and a large
debounce time are expected. The device can generate 2048 different
commands and utilizes a keyboard with a single pole switch for each key.
The command are arranged so that 32 systems can be addressed, each
system containing 64 different commands. The keyboard interconnection
is illustrated by Fig.1.
mLow voltage requirement
oSingle pin oscillator
.cBiphase transmission technique
Test mode facility
www.DataSheet4UBLOCK DIAGRAM
ORDERING INFORMATION
INA3010N Plastic
INA3010DW SOIC
TA = -25° to 85° C for all packages.
PIN ASSIGNMENT
1

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INA3010
PIN DESCRIPTION
PIN No DESIGNATION
DESCRIPTION
1 X7 (IPU)
sense input from key matrix
2 SSM (I)
system mode selection input
3-6 Z0-Z3 (IPU)
sense inputs from key matrix
7
MDATA (OP3)
generated output data modulated with 1/2 the oscillator frequency at a 25%
duty factor
8 DATA (OP3)
generated output information
9-13 DR7-DR3 (ODN) scan drivers
14 GND
ground (0V)
15-17 DR2-DR0 (ODN) scan drivers
18 OSC (I)
oscillator input
19 TP2 (I)
test point 2
20 TP1 (I)
test point 1
21-27 X0-X6 (IPU)
sense inputs from key matrix
28 Vcc (I)
voltage supply
(I) = input
(IPU) = input with p-channel pull-up transistor
(ODN) = output with open drain n-channel transistor
(OP3) = output 3-state
FUNCTIONAL DESCRIPTION
Keyboard operation
Every connection of one X-input and one DR-output will be recognized as a legal key operation and will cause the
device to generate the corresponding code. The same applies to every connection of one Z-input to one DR-output with
the proviso that SSM must be LOW. When SSM is HIGH a wired connection must exist between a Z-input and DR-
output. If no connection is present the system number will not be generated. Activating two or more X-inputs, Z-inputs
or Z-inputs and X-inputs at the same time is an illegal action and inhibits further activity (oscillator will not start).
When one X- or Z-input is connected to more than one DR-output, the last scan signal will be considered as legal.
The maximum value of the contact series resistance of the switched keyboard is 7K.
Inputs
In the quiescent state the command inputs X0 to X7 are held HIGH by an internal pull-up transistor. When the system
mode selection (SSM) input is LOW and the system is quiescent, the system inputs Z0 to Z3 are also held HIGH by an
internal pull-up transistor. When SSM is HIGH the pull-up transistor for the Z-inputs is switched off, in order to
prevent current flow, and a wired connection in the Z-DR matrix provides the system number.
Outputs
The output signal DATA transmits the generated information in accordance with the format illustrated by Fig.2 and
Tables 1 and 2. The code is transmitted using a biphase technique as illustrated by Fig.3. The code consists of four
parts:
Start part - 1.5 bits (2 x logic 1)
Control part - 1 bit
System part - 5 bits
Command part - 6 bits
The output signal MDATA transmits the generated information modulated by 1/12 of the oscillator frequency with a
50% duty factor.
In the quiescent state both DATA and MDATA are non-conducting (3-state outputs).
The scan driver outputs DR0 to DR7 are open drain n-channel transistors and conduct when the circuit is quiescent.
After a legal key operation the scanning cycle is started and the outputs switched to the conductive state one by one.
The DR-outputs were switched off at the end of the preceding debounce cycle.
2

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INA3010
Table 1 Command matrix (X-DR)
Code
X-lines
DR-lines
no. 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
0x
x
1x
x
2x
x
3x
x
4x
x
5x
x
6x
x
7x
x
8x
x
9x
x
10 x
x
11 x
x
12 x
x
13 x
x
14 x
x
15 x
x
16 x
x
17 x
x
18 x
x
19 x
x
20 x
x
21 x
x
22 x
x
23 x
x
24 x
x
25 x
x
26 x
x
27 x
x
28 x
x
29 x
x
30 x
x
31 x
x
32 x x
33 x x
34 x
x
35 x
x
36 x
x
37 x
x
38 x
x
39 x
x
40 x x
41 x x
42 x x
43 x x
44 x
x
45 x
x
46 x
x
47 x
x
48 x x
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Command bits
4321
0000
0000
0001
0001
0010
0010
0011
0011
0100
0100
0101
0101
0110
0110
0111
0111
1000
1000
1001
1001
1010
1010
1011
1011
1100
1100
1101
1101
1110
1110
1111
1111
0000
0000
0001
0001
0010
0010
0011
0011
0100
0100
0101
0101
0110
0110
0111
0111
1000
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
3

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INA3010
Table 1 Command matrix (X-DR) (Continued)
Code
X-lines
DR-lines
no. 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
49 x x
50 x x
51 x x
52 x x
53 x x
54 x
x
55 x
x
56 x x
57 x x
58 x x
59 x x
60 x x
61 x x
62 x x
63 x x
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Command bits
4321
1000
1001
1001
1010
1010
1011
1011
1100
1100
1101
1101
1110
1110
1111
1111
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Table 2 System matrix (Z-DR)
Code
X-lines
DR-lines
no. 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
0x
x
1x
x
2x
x
3x
x
4x
x
5x
x
6x
x
7x
x
8x
x
9x
x
10 x
x
11 x
x
12 x
x
13 x
x
14 x
x
15 x
x
16 x
x
17 x
x
18 x
x
19 x
x
20 x
x
21 x
x
22 x
x
23 x
x
24 x
x
25 x
x
26 x
x
27 x
x
28 x
x
29 x
x
30 x
x
31 x
x
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
System bits
321
000
000
001
001
010
010
011
011
100
100
101
101
110
110
111
111
000
000
001
001
010
010
011
011
100
100
101
101
110
110
111
111
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
4

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INA3010
MAXIMUM RATINGS*
Symbol
VCC
VIN
VOUT
IIN
IOUT
PDO
PDO
PD
Tstg
Parameter
DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)*
DC Output Voltage (Referenced to GND)*
DC Input Current
DC Output Current
Maximum Power Dissipation
OSC output
other outputs
Power Dissipation in Still Air
Storage Temperature
Value
-0.5 to +8.5
-0.5 to VCC +0.5
-0.5 to VCC +0.5
±10
±10
50
100
200
-65 to +150
*VCC + 0.5 must not exceeed 9.0V..
*Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
+Derating - Plastic DIP: - 10 mW/°C from 65° to 85°C
SOIC Package: : - 7 mW/°C from 65° to 85°C
Unit
V
V
V
mA
mA
mW
mW
mW
°C
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
VIH
VIL
VOUT
IIN
IOL
IOH
TA
Parameter
DC Supply voltage (Reference to GND)
DC Input voltage (HIGH)
DC Input voltage (LOW)
DC Output Voltage (MDATA, DATA)
DC Input Current
DC Output Current (LOW)
pins 7,8
pins 9-13; 15-17
DC Output Current (MDATA, DATA)
Operating Temperature, All Package Types
Min
2.0
0.7VCC
0
-
-
-
-
-25
Max
7.0
VCC
0.3VCC
7.0
±10
0.6
0.3
-0.4
85
Unit
V
V
V
V
mA
mA
mA
oC
This device contains protection circuitry to guard against damage due to high static voltages or electric fields.
However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this
high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range GND(VIN or
VOUT)VCC.
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused
outputs must be left open.
5