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APPROVAL SIGN

S/W APPROVAL SHEET. GTEC-0013. GTS. DATE ; `98. 06. 19. No. 9805. Globaltec. APPROVAL SIGN. `98. 06. 30. CHECK SUM :. No. DATE. CONTENTS OF MODIFICATION. 2. 12. Software Spec Sheet. Product Purpose Function Features. 4 bit 1 chip microcomputer.

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APPROVAL SIGN

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  1. S/W APPROVAL SHEET GTEC-0013 GTS DATE ; `98. 06. 19. No. 9805 Globaltec. APPROVAL SIGN `98. 06. 30. CHECK SUM : No DATE CONTENTS OF MODIFICATION

  2. 2 12 Software Spec Sheet • Product • Purpose • Function • Features • 4 bit 1 chip microcomputer • Infrared remote control encoder • 8 X8 key matrix scan • Operating frequency : 300KHz to 500KHz • CMOS process (Single 3V power supply) • Built in capacitor for ceramic oscillation circuit

  3. 3 12 1. Output waveform 1) uPD6122 A single pulse, modulated with 37.917KHz signal at 455KHz Tc Carrier frequency fCAR = 1/Tc = fOSC/12 Duty ratio = T1/Tc = 1/3 T1 - Configuration of Flame of 16bit ( NEC 16bit custom ) 1st flame Low Custom code High Custom code Lead code Data code Data code C0 C1 C2 C3 C4 C5 C6 C7 C0' C1' C2' C3' C4' C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D5 D7 - Configuration of Flame of 8bit ( NEC 8bit custom ) 1st flame Custom code Custom code Lead code Data code Data code C0 C1 C2 C3 C4 C5 C6 C7 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D5 D7 Repeat flame Full code Repeat code Tf

  4. 4 12 - Lead code 9ms 4.5ms - Repeat code 0.56ms 9ms 2.25ms - Bit Description Bit ﹍0﹍ Bit ﹍1﹍ 0.56ms 0.56ms 1.125ms 2.25ms - Flame Interval of Reprat flame: Tf The transmitted waveform as long as a key is depressed Tf Tf Tf = 108ms @455KHz

  5. 7 12 2. Truth Table Key No. Data(h) M50462 Data(h) TC9028 Data(h) uPD6122 Key No. Data(h) M50462 Data(h) TC9028 Data(h) uPD6122 1 00 00 00 33 20 20 40 2 01 01 01 34 21 21 41 3 02 02 02 35 22 22 42 4 03 03 03 36 23 23 43 5 04 04 04 37 24 24 44 6 05 05 05 38 25 25 45 7 06 06 06 39 26 26 46 8 07 07 07 40 27 27 47 9 08 08 08 41 28 28 48 10 09 09 09 42 29 29 49 11 0A 0A 0A 43 2A 2A 4A 12 0B 0B 0B 44 2B 2B 4B 13 0C 0C 0C 45 2C 2C 4C 14 0D 0D 0D 46 2D 2D 4D 15 0E 0E 0E 47 2E 2E 4E 16 0F 0F 0F 48 2F 2F 4F 17 10 10 10 49 30 30 50 18 11 11 11 50 31 31 51 19 12 12 12 51 32 32 52 20 13 13 13 52 33 33 53 21 14 14 14 53 34 34 54 22 15 15 15 54 35 35 55 23 16 16 16 55 36 36 56 24 17 17 17 56 37 37 57 25 18 18 18 57 38 38 58 26 19 19 19 58 39 39 59 27 1A 1A 1A 59 3A 3A 5A 28 1B 1B 1B 60 3B 3B 5B 29 1C 1C 1C 61 3C 3C 5C 30 1D 1D 1D 62 3D 3D 5D 31 1E 1E 1E 63 3E 3E 5E 32 1F 1F 1F 64 3F 3F 5F

  6. 8 12 - Double action keys ( M50462 only) ( ) = Key Number First Key No. Second Key No. Data ( HEX ) K0D0 ( 1 ) + D1R0 (13) 4C D1R1 (14) 4D D1R2 (15) 4E D1R3 (16) 4F K1D0 ( 2 ) + D1R0 (13) 8C D1R1 (14) 8D D1R2 (15) 8E D1R3 (16) 8F K2D0 ( 3 ) + D1R0 (13) CC D1R1 (14) CD D1R2 (15) CE D1R3 (16) CF Data ( HEX ) First Key No. Second Key No. PORT NUMBER D1R0 (13) 4C K0D0 ( 1 ) (1) + (13) = 4C (HEX data) First key + Second key = double action key data KEY NUMBER

  7. 12 12 Detail Circuit Diagram - NEC 6122- 001 - This mode will not support the custom as xx80h,xx40h,00FFh in 16bit Custom. 7 57 33 25 17 01 23 49 41 09 C0 K0 K1 K2 K3 R0 R1 R2 R3 D0 D1 D2 D3 D4 D5 D8 D9 D6 D7 C0 OSC1 8 58 34 26 18 10 02 C1 50 42 C1 22 OSC2 9 59 35 27 19 11 03 C2 51 43 C2 10 60 36 28 12 C3 52 44 20 C3 04 3 61 37 29 13 C4 53 45 21 05 C4 GTEC-0013 21 4 REM OUT 62 38 30 22 C5 54 46 14 C5 06 5 07 63 39 31 23 15 55 47 C6` C6 6 C7` 24 C7 64 40 32 16 56 48 08 11 24 Vdd 14 + 15 1 RESET 16 - 17 2 GND 18 12 13 19 20 = = = ﹍High﹍ ﹍Low﹍

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