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D6122G

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DATA SHEET DATA SHEET MOS INTEGRATED CIRCUIT µPD6121, 6122 REMOTE CONTROL TRANSMISSION CMOS IC The µPD6121, 6122 are infrared remote control transmission ICs using the NEC transmission format that are ideally suited for TVs, VCRs, audio equipment, air conditioners, etc. By combining external diodes and resistors, a maximum * of 65,536 custom codes can be specified. These ICs come in small packages, thus facilitating the design of light and compact remote control transmitters. The NEC transmission format consists of leader codes, custom codes (16 bits), and data codes (16 bits). It can be used for various systems through decoding by a microcontroller. FEATURES • • • • Low-voltage operation: VDD = 2.0 to 3.3 V Low current dissipation: 1 µA Max. (at standby) Custom codes: 65,536 (set by external diodes and resistors) * Data codes: • µPD6121: 32 codes (single input), 3 codes (double input), expandable up to 64 codes through SEL pin • µPD6122: 64 codes (single input), 3 codes (double input), expandable up to 128 codes through SEL pin • µPD6121, 6122 are transmission code-compatible (NEC transmission format) with the µPD1913CNote, 1943GNote, 6102GNote, and 6120CNote. • Pin compatibility: • µPD6121G-001 is pin-compatible with the µPD1943G (However, capacitance of capacitor connected to oscillator pin and other parameters vary) • µPD6122G-001 is pin-compatible with the µPD6102G (However, capacitance of capacitor connected to oscillator pin and other parameters vary) • Standard products (Ver. I, Ver. II specifications) * Note Provided for maintenance purpose only • When using this product (in NEC transmission format), please order custom codes from NEC. • New custom codes for the µPD6121G-002, µPD6122G-002 cannot be ordered. The information in this document is subject to change without notice. Document No. U10114EJ6V0DS00 (6th edition) (Previous No. IC-1813) Date Published October 1995 P) Printed in Japan The mark * shows revised points. © 1994 1994

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