UPD6121G-002 NEC, UPD6121G-002 Datasheet
UPD6121G-002
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UPD6121G-002 Summary of contents
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... 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. ...
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... PIN IDENTIFICATIONS CCS : Custom code selection input Key input 0 7 KI/O - KI/O : Key input/output 0 7 LMP : Lamp output OSCI, OSCO: Resonator connection pin 2 Package Description Standard (Ver I spec.) Standard (Ver II spec.) Standard (Ver I spec.) Standard (Ver II spec.) 20 CCS KI KI/O KI ...
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... SOP (375 mil) V LMP DD Output circuit Controller Data register Key input/output circuit KI/O KI/O KI/O KI/O KI/O KI PD6122 V = 2 MAX. 65,536 (16-bit setting Provided NEC transmission format 24-pin plastic SOP (375 mil) PD6121, 6122 * REM V SS KI/O KI ...
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... CCS input pin By placing a diode between the CCS pin and the KI/O pin possible to set a custom code. When a diode is connected, the corresponding custom code is “1”, and when not connected “0”. (7) LMP output pin The LMP pin outputs a low-level signal while the REM pin outputs a transmission code. ...
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... If intending to use custom codes other than 00xxH, please consult NEC in order to avoid various types of errors from occurring between systems. 2. When receiving data in the NEC transmission format, check that the 32 bits made up of the 16-bit custom code (Custom Code, Custom Code’) and the 16-bit data code (Data Code, Data Code) are fully decoded, and that there are no signals with the 33rd bit and after (be sure to check also Data Code) ...
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... Standard versions with Ver I specs. ( PD6121-001, PD6122-001) * Each of the higher 8 bits of the custom code is set to “1” when a diode is connected between the CCS pin and the corresponding KI/O pin, and is set to “0” when no diode is connected pull-up resistor is connected to the KI/O pin corresponding to one of the lower 8 bits of the custom code’, the bit is first set to “1”. Based on the 1’ ...
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... The higher 8 bits of the custom code are determined by the diode connected to the CCS pin and KI/O pin. Set custom code The inversion/non-inversion of the lower 8 bits of the custom code’ is determined by the pull-up resistor connected to the KI/O pin. Set custom code When the above-described setting is done, the following custom code is output. ...
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... In Ver II not possible to set all custom codes. Also, new custom codes cannot be ordered for Ver II products; therefore, Ver I products should be used if new custom codes are required the higher 8 bits of the custom code is done by connecting the CCS pin 0 pins, as shown below. 7 ...
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... KI/O KI Connection of any one line and C of the higher 8 bits of the custom code are fixed by connecting the CCS pin to KI Therefore, in the configuration example, they become and C of the higher 8 bits of the custom code are selected and fixed by the pull-up resistor ...
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... As noted above, setting the pull-up resistor and connection, produces the following custom code. Custom code Higher 8 bits of custom code * Remark Codes are transmitted from the LSB. 10 Lower 8 bits of custom code’ ...
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... REMOTE OUTPUT WAVEFORM (NEC TRANSMISSION FORMAT: ONE-SHOT COMMAND TRANSMISSION MODE) • When f = 455 kHz OSC (1) Remote (REM) output (from stage 2 , transmission occurs only when key is kept depressed) REM output 58.5 to 76.5 ms 108 ms 1 (2) Magnification of stage 1 3 REM output 9 ms 4.5 ms 13.5 ms Leader Code ...
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... K52 * K53 * K54 * KI/O 5 K55 * K56 * K57 * K58 * KI/O 6 K59 * K60 * K61 * K62 * KI/O 7 K63 * K64 * Note Bit D is “0” when the SEL pin is connected DATA CODE 0 ...
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DOUBLE-INPUT OPERATION All keys are provided with a multiple-input prevention circuit. When two or more keys are pressed simulta- neously, no signal is transmitted; but when the keys K21 and K22, K21 and K23, or K21 and K24 are ...
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... A continuous command transmission mode for transmitting data a second or more times is also available. As shown in Figure 7- possible to continuously transmit commands for all the keys or for individual key output lines simply by adding a diode D and connecting this case, the average transmission current is larger than that in the one-shot command transmission mode. ...
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Figure 7-1. Continuous Command Transmission Mode (When f (1) PD6120C, 6121G, 6122G REM output 58.5 to 76.5 ms 108 ms LMP output (2) PD1913C, 1943G, 6102G ( ...
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Figure 7-2. Application Circuit for Continuous Command Transmission Mode 1 Continuous command transmission for all keys REM output is input to KI Ceramic resonator 455 kHz 220 pF OSCO OSCI CCS KI ...
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APPLICATION CIRCUIT EXAMPLE (1) Example application circuit using PD6121 Ceramic resonator 455 kHz OSCO OSCI V DD SEL µPD6121G-001 CCS (2) Example application circuit using PD6122 Ceramic resonator 455 kHz OSCO ...
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Application circuit example, receive side * PIN photo diode PH302C PH310 PH320 Note The PC2801A’s active level is high. 18 Preamplifier (amplification, waveform shaping) IN OUT Note µPC2800A, 2801A µPC2803 µPC2804 Shield case PD6121, 6122 Microcomputer Key input Display ...
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ELECTRICAL SPECIFICATIONS Absolute Maximum Ratings ( Parameter Supply voltage Input voltage Power dissipation Operating ambient temperature Storage temperature Recommended Operating Conditions (T Parameter Supply voltage Oscillation frequency Input voltage Custom code select pull-up resistor DC ...
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... Keep wiring as short as possible. • Do not cross other signal lines. Do not design wiring close to lines with large fluctuating current. • Make sure that the connection point of the oscillation circuit’s capacitor has the same potential • ...
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PACKAGE DRAWINGS (1) Package for the PD6121 20 PIN PLASTIC SOP (375 mil NOTE Each lead centerline is located within 0.12 mm (0.005 inch) of its true position (T.P.) at maximum material ...
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Package for the PD6122 * 24 PIN PLASTIC SOP (375 mil NOTE Each lead centerline is located within 0.12 mm (0.005 inch) of its true position (T.P.) at maximum material condition ...
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... The following conditions (see table below) must be met when soldering this product. For more details, refer to the NEC document SEMICONDUCTOR DEVICE MOUNTING TECHNOLOGY MANUAL (IEI-1207). Please consult an NEC sales representative in case an other soldering process is used case soldering is done under different conditions. Table 11-1. Soldering Conditions for Surface Mounting ...
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... Custom code Data code No. of keys Package Cautions 1. New custom codes are not available for the following standard products. PD6121G, 6122G Ver II standard products (-002 products other than listed in Caution 1 are used, please contact NEC for custom codes. 24 PD6121 V = 2 ...
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... Notes 1. Under development 2. This product’s pin configuration is the same as that of the 20-pin PD6133, 6134, and 6604, but the package is a 24-pin SOP shrink DIP package. Caution If using the NEC transmission format, please contact NEC for the custom code. PD6133 PD6134 ...
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... Operating frequency Power supply voltage Operating ambient temperature Charge/discharge function (NOP) Low voltage detector Package PROM version Caution If using the NEC transmission format, please contact NEC for the custom code. 26 PD6600 PD6600A PD6124 512 x 10 bits 1002 x 10 bits bits ...
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... Similar precautions need to be taken for PW boards with semiconductor devices on it. 2 HANDLING OF UNUSED INPUT PINS FOR CMOS Note: No connection for CMOS device inputs can be cause of malfunction connection is provided to the input pins possible that an internal input level may be generated due to noise, etc., hence causing malfunction. CMOS devices behave differently than Bipolar or NMOS devices ...
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... Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems or medical equipment for life support, etc. The quality grade of NEC devices in “Standard“ unless otherwise specified in NEC's Data Sheets or Data Books. If customers intend to use NEC devices for applications other than those specified for Standard quality grade, they should contact NEC Sales Representative in advance ...