Datasheet INA3010N, INA3010DW Datasheet (INTEGRAL)

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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.

INA3010

• Low voltage requirement

• Single pin oscillator

• Biphase transmission technique

• Test mode facility

BLOCK DIAGRAM

ORDERING INFORMATION

INA3010N Plastic

INA3010DW SOIC

TA = -25° to 85° C

for all packages

PIN ASSIGNMENT

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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 DRoutput 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 7KΩ.

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.

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INA3010

Table 1

Code X-lines DR-lines Command bits

no. 0123456701234567 5 4 3 2 1 0

10 x x 001010 11 x x 001011 12 x x 001100 13 x x 001101 14 x x 001110 15 x x001111 16 x x 010000 17 x x 010001 18 x x 010010 19 x x 010011 20 x x 010100 21 x x 010101 22 x x 010110 23 x x010111 24 x x 011000 25 x x 011001 26 x x 011010 27 x x 011011 28 x x 011100 29 x x 011101 30 x x 011110 31 x x011111 32 x x 100000 33 x x 100001 34 x x 100010 35 x x 100011 36 x x 100100 37 x x 100101 38 x x 100110 39 x x100111 40 x x 101000 41 x x 101001 42 x x 101010 43 x x 101011 44 x x 101100 45 x x 101101 46 x x 101110 47 x x101111 48 x x 110000

Table 1

Command matrix (X-DR)

0x x 000000 1x x 000001 2x x 000010 3x x 000011 4x x 000100 5x x 000101 6x x 000110 7x x000111 8 x x 001000 9 x x 001001

Command matrix (X-DR) (Continued)

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INA3010

Code X-lines DR-lines Command bits

no. 0123456701234567 5 4 3 2 1 0

49 x x 110001 50 x x 110010 51 x x 110011 52 x x 110100 53 x x 110101 54 x x 110110 55 x x110111 56 xx 111000 57 x x 111001 58 x x 111010 59 x x 111011 60 x x 111100 61 x x 111101 62 x x 111110 63 x x111111

Table 2

Code X-lines DR-lines System bits

no. 0123456701234567 4 3 2 1 0

10 x x 01010 11 x x 01011 12 x x 01100 13 x x 01101 14 x x 01110 15 x x01111 16 x x 10000 17 x x 10001 18 x x 10010 19 x x 10011 20 x x 10100 21 x x 10101 22 x x 10110 23 x x10111 24 x x 11000 25 x x 11001 26 x x 11010 27 x x 11011 28 x x 11100 29 x x 11101 30 x x 11110 31 x x11111

System matrix (Z-DR)

0x x 00000 1x x 00001 2x x 00010 3x x 00011 4x x 00100 5x x 00101 6x x 00110 7x x00111 8 x x 01000 9 x x 01001

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INA3010

MAXIMUM RATINGS

Symbol Parameter Value Unit

OUT

DC Supply Voltage (Referenced to GND) -0.5 to +8.5 V DC Input Voltage (Referenced to GND)* -0.5 to VCC +0.5 V

DC Output Voltage (Referenced to GND)* -0.5 to VCC +0.5 V DC Input Current DC Output Current

±10 ±10

Maximum Power Dissipation

OSC output other outputs

Power Dissipation in Still Air 200 mW

100

Tstg Storage Temperature -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

mA mA

mW mW

°C

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min Max Unit

OUT

This device c ontains p rote ction ci rcuitr y to guard a gainst damage d ue to high st atic voltages or electr ic 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, V GND≤(V

Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or V Unused outputs must be left open.

DC Supply voltage (Reference to GND) 2.0 7.0 V DC Input voltage (HIGH) 0.7V

DC Input voltage (LOW) 0 0.3V DC Output Voltage (MDATA, DATA) - 7.0 V DC Input Current - ±10 mA DC Output Current (LOW) -

pins 7,8 0.6 mA pins 9-13; 15-17 0.3

DC Output Current (MDATA, DATA) Operating Temperature, All Package Types

or V

OUT

)≤VCC.

and V

OUT

--0.4mA

-25 85

should be constrained to the range

V V

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INA3010

DC ELECTRICAL CHARACTERISTICS

= 2.0 to 7.0V unless otherwise specified, TA=-25 to +70°C)

(Voltage Reference to GND)

Guaranteed Limits

Symbol Parameter Test Conditions Min Max Unit

Quiscent supply current

UIL=0B; VIH=V I

=0 mA at all outputs

OUT

INPUTS

Input current

VIL=0V Pins 01, 03-06; 21-27 Pin 18 VIL=0V; VIH=V Input leakage current

VIL=0V; VIH=V Pins 01-06;19-27

-10 -600

3.0 33

±10

Pin 18 - -20

OUTPUTS

Output voltage HIGH, pins 07-08

Output voltage LOW Pins 07-08

IOH=-0.4mA

=0.3 V

IOL=0.6mA

=0V, VHI=0.7V

Pins 9-13; 15-17 IOL=0.3mA, VIL=0V,

=0.7V

Output leakage current

VO=VCC, VIH=VCC,

OH=VCC

VCC-0.3 - V

-0.3V

-10

Pins 07-13; 15-17 -

Output leakage

VO=0V, VIH=VCC, VOL=0V - -20 current

Pins 07-08 -

DC Output Current

VIL=0V; VIH=VCC; VOH=V

Pins 9-13; 15-17

µA

AC ELECTRICAL CHARACTERISTICS

TA=-25 to +85°C; VCC=2.0 to 7.0 V unless otherwise specified

Symbol Parameter Test Condition Guaranteed Limits

Typ Max Unit

Oscillator frequency CL=160pF

OSC

operational 432 450 KHz

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INA3010

Figure 1. Keyboard interconnection

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INA3010

Where: debounce time+scan time=18 bit-temes

repetition time=4x16 bit times

Figure 2. Data output format

Where: 1 bit-time=3.28 x T

Figure 3. Biphase transmission technique

=1.778 ms (typ.)

OSC