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Электронный компонент: INA3010N

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INA3010
1
I
NFRARED
R
EMOTE
C
ONTROL
T
RANSMITTER
(RC-5)
GENERAL DESCRIPTION
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.
FEATURES
Low voltage requirement
Single pin oscillator
Biphase transmission technique
Test mode facility
ORDERING INFORMATION
INA3010N Plastic
INA3010DW SOIC
T
A
= -25
to 85 C
for all packages
BLOCK DIAGRAM.
INA3010
2
PINNING
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
Note
(I) = input
(IPU) = input with p-channel pull-up transistor
(ODN) = output with open drain n-channel transistor
(OP3) = output 3-state
KEYBOARD INTERCONNECTION.
I N A3 0 1 0
INA3010
3
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 the7 proviso that SSM must be
LOW. When SSM is HIGH a wired connection must exist between a Z-input and a 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 7 kW.
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.3. The code is transmitted using a biphase technique as illustrated by
Fig.4. The code consists of four parts:
Start part -1.5 bits (2 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.

Command matrix (X-DR)
Code X-lines
DR-lines
Command
bits
no. 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 5 4 3 2 1 0
0 x x 0 0 0 0 0 0
1 x x 0 0 0 0 0 1
2 x x 0 0 0 0 1 0
3 x x 0 0 0 0 1 1
4 x x 0 0 0 1 0 0
5 x x 0 0 0 1 0 1
6 x x 0 0 0 1 1 0
7 x x 0 0 0 1 1 1
8 x x 0 0 1 0 0 0
9 x x 0 0 1 0 0 1
10 x x 0 0 1 0 1 0
11 x x 0 0 1 0 1 1
INA3010
4
Code X-lines
DR-lines
Command
bits
no. 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 5 4 3 2 1 0
12 x x 0 0 1 1 0 0
13 x x 0 0 1 1 0 1
14 x x 0 0 1 1 1 0
15 x x 0 0 1 1 1 1
16 x x 0 1 0 0 0 0
17 x x 0 1 0 0 0 1
18 x x 0 1 0 0 1 0
19 x x 0 1 0 0 1 1
20 x x 0 1 0 1 0 0
21 x x 0 1 0 1 0 1
22 x x 0 1 0 1 1 0
23 x x 0 1 0 1 1 1
24 x x 0 1 1 0 0 0
25 x x 0 1 1 0 0 1
26 x x 0 1 1 0 1 0
27 x x 0 1 1 0 1 1
28 x x 0 1 1 1 0 0
29 x x 0 1 1 1 0 1
30 x x 0 1 1 1 1 0
31 x x 0 1 1 1 1 1
32 x x 1 0 0 0 0 0
33 x x 1 0 0 0 0 1
34 x x 1 0 0 0 1 0
35 x x 1 0 0 0 1 1
36 x x 1 0 0 1 0 0
37 x x 1 0 0 1 0 1
38 x x 1 0 0 1 1 0
39 x x 1 0 0 1 1 1
40 x x 1 0 1 0 0 0
41 x x 1 0 1 0 0 1
42 x x 1 0 1 0 1 0
43 x x 1 0 1 0 1 1
44 x x 1 0 1 1 0 0
45 x x 1 0 1 1 0 1
46 x x 1 0 1 1 1 0
47 x x 1 0 1 1 1 1
48 x x 1 1 0 0 0 0
49 x x 1 1 0 0 0 1
50 x x 1 1 0 0 1 0
51 x x 1 1 0 0 1 1
52 x x 1 1 0 1 0 0
53 x x 1 1 0 1 0 1
54 x x 1 1 0 1 1 0
55 x x 1 1 0 1 1 1
56 x x 1 1 1 0 0 0
57 x x 1 1 1 0 0 1
58 x x 1 1 1 0 1 0
59 x x 1 1 1 0 1 1
60 x x 1 1 1 1 0 0
61 x x 1 1 1 1 0 1
62 x x 1 1 1 1 1 0
63 x x 1 1 1 1 1 1
INA3010
5
System matrix (Z-DR)
Code X-lines
DR-lines
System
bits
no. 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 4 3 2 1 0
0 x x 0 0 0 0 0
1 x x 0 0 0 0 1
2 x x 0 0 0 1 0
3 x x 0 0 0 1 1
4 x x 0 0 1 0 0
5 x x 0 0 1 0 1
6 x x 0 0 1 1 0
7 x x 0 0 1 1 1
8 x x 0 1 0 0 0
9 x x 0 1 0 0 1
10 x x 0 1 0 1 0
11 x x 0 1 0 1 1
12 x x 0 1 1 0 0
13 x x 0 1 1 0 1
14 x x 0 1 1 1 0
15 x x 0 1 1 1 1
16 x x 1 0 0 0 0
17 x x 1 0 0 0 1
18 x x 1 0 0 1 0
19 x x 1 0 0 1 1
20 x x 1 0 1 0 0
21 x x 1 0 1 0 1
22 x x 1 0 1 1 0
23 x x 1 0 1 1 1
24 x x 1 1 0 0 0
25 x x 1 1 0 0 1
26 x x 1 1 0 1 0
27 x x 1 1 0 1 1
28 x x 1 1 1 0 0
29 x x 1 1 1 0 1
30 x x 1 1 1 1 0
31 x x 1 1 1 1 1