UPD6121G-001 NEC [NEC], UPD6121G-001 Datasheet

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REMOTE CONTROL TRANSMISSION CMOS IC The PD6121, 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 ...

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ORDERING INFORMATION * Part number PD6121G-001 20-pin plastic SOP (375 mil) PD6121G-002 20-pin plastic SOP (375 mil) PD6122G-001 24-pin plastic SOP (375 mil) PD6122G-002 24-pin plastic SOP (375 mil) PIN CONFIGURATION (Top View) µPD6121 ...

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BLOCK DIAGRAM OSCO OSCI Oscillator Frequency divider SEL Timing generator CCS Key input circuit Note KI – Note PD6121 PD6122 DIFFERENCES BETWEEN PRODUCTS Part number PD6121 Item ...

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PIN FUNCTIONS (1) Key input pins ( key input/output pins (KI pull-down resistor is placed between key input pins and a V simultaneously, the transmission of the corresponding signals is inhibited by a ...

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NEC TRANSMISSION FORMAT (REM OUTPUT) The NEC transmission format consists of the transmission of a leader code, 16-bit custom codes (Custom Code, Custom Code’), and 16-bit data codes (Data Code, Data Code) at one time, as shown in Figure ...

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CUSTOM CODE (CUSTOM CODE, CUSTOM CODE’) SETTING * The custom code is set in two different ways depending on whether Ver I or Ver II specifications are employed. Higher 8 bits of custom code Ver I Fixed by external ...

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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 ...

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Standard versions with Ver II specs. ( PD6121-002, 6122-002 Ver II, the CCS pin does not have the external diode reading function. The allocation and any one of the ...

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Figure 3-3. Example of Custom Code Setting for Ver II Specifications ( PD6121-002, 6122-002) Configuration Example CCS KI/O KI Connection of any one line and C of the higher 8 bits ...

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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 ...

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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 ...

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KEY DATA CODES (SINGLE INPUT) * CONNECTION KEY ...

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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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ONE-SHOT/CONTINUOUS COMMAND TRANSMISSION MODE 7.1 One-shot Command Transmission Mode In order to reduce the average transmission current, the PD6120C, 6121G, and 6122G transmit data only once, and thereafter transmit just the leader code and stop bit indicating that a ...

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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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Recommended Ceramic Resonators (T • PD6121, 6122 Maker Product Murata Seisakusho Corp. CSB455E CSB480E Toko Corp. CRK455 Kyocera Corp. KBR-455BTLR Example of external circuit OSCI OSCO Caution If using an oscillation circuit, wire the area enclosed ...

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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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RECOMMENDED SOLDERING CONDITIONS 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 ...

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APPENDIX. REMOTE CONTROL TRANSMISSION IC AND MICROCONTROLLER LIST * • Single-function remote control transmission ICs (NEC transmission format) Part number Parameter Operating voltage Operating clock Transmission format Leader Modulation method Custom code Data code No. of keys Package Cautions 1. ...

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Single-Function 4-bit Single-Chip Microcontroller Part number Parameter ROM capacity 512 x 10 bits RAM capacity bits Oscillator Ceramic oscillator S (S-IN) Read with P 0 function provided) S /LED (S-OUT) I/O (standby cancellation function provided) 1 ...

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Single-Chip Microcontroller for Programmable Remote Control Transmission Part number Parameter ROM capacity RAM capacity Oscillator S (S-IN /LED (S-OUT) 1 Key matrix (without Di) Timer clock Stack Carrier frequency Instruction execution time Operating frequency Power ...

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NOTES FOR CMOS DEVICES 1 PRECAUTION AGAINST ESD FOR SEMICONDUCTORS Note: Strong electric field, when exposed to a MOS device, can cause destruction of the gate oxide and ultimately degrade the device operation. Steps must be taken to stop generation ...

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The application circuits and their parameters are for references only and are not intended for use in actual design-in's. No part of this document may be copied or reproduced in any form or by any means without the prior written ...