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INA3010 Dataheets PDF



Part Number INA3010
Manufacturers ETC
Logo ETC
Description INFRARED REMOTE CONTROL TRANSMITTER RC-5
Datasheet INA3010 DatasheetINA3010 Datasheet (PDF)

INA3010 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. • • • • L.

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INA3010 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. • • • • Low voltage requirement Single pin oscillator Biphase transmission technique Test mode facility ORDERING INFORMATION INA3010N Plastic INA3010DW SOIC TA = -25° to 85° C for all packages. BLOCK DIAGRAM PIN ASSIGNMENT 1 INA3010 PIN DESCRIPTION PIN No 1 2 3-6 7 8 9-13 14 15-17 18 19 20 21-27 28 (I) (IPU) (ODN) (OP3) DESIGNATION X7 (IPU) SSM (I) Z0-Z3 (IPU) MDATA (OP3) DESCRIPTION sense input from key matrix system mode selection input sense inputs from key matrix generated output data modulated with 1/2 the oscillator frequency at a 25% duty factor generated output information scan drivers ground (0V) scan drivers oscillator input test point 2 test point 1 sense inputs from key matrix voltage supply DATA (OP3) DR7-DR3 (ODN) GND DR2-DR0 (ODN) OSC (I) TP2 (I) TP1 (I) X0-X6 (IPU) Vcc (I) = input = input with p-channel pull-up transistor = output with open drain n-channel transistor = 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 bit.


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