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EM6821 Datasheet(PDF) 4 Page - EM Microelectronic - MARIN SA |
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EM6821 Datasheet(HTML) 4 Page - EM Microelectronic - MARIN SA |
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4 / 68 page 
R EM6821 Copyright © 2005, EM Microelectronic-Marin SA 4 www.emmicroelectronic.com 1. Pin Description for EM6821 Chip TQFP 52 DIL 64 Signal Name Function Remarks 1 1 10 VL1 Voltage multiplier level 1 LCD level 1 input, if external supply selected 2 2 11 VL2 Voltage multiplier level 2 LCD level 2 input, if external supply selected 3 3 12 VL3 Voltage multiplier level 3 LCD level 3 input, if external supply selected 4 4 13 COM[1] LCD back plane 1 5 5 14 COM[2] LCD back plane 2 6 6 15 COM[3] LCD back plane 3 7 7 16 COM[4] LCD back plane 4 Not used if 3 times multiplexed 8 8 18 SEG[20] LCD Segment 20 9 9 19 SEG[19] LCD Segment 19 10 10 20 SEG[18] LCD Segment 18 11 11 21 SEG[17] LCD Segment 17 12 12 22 SEG[16] LCD Segment 16 13 13 23 SEG[15] LCD Segment 15 14 14 26 SEG[14] LCD Segment 14 15 15 27 SEG[13] LCD Segment 13 16 16 28 SEG[12] LCD Segment 12 17 17 29 SEG[11] LCD Segment 11 18 18 30 SEG[10] LCD Segment 10 19 19 31 SEG[9] LCD Segment 9 20 20 33 SEG[8] LCD Segment 8 21 21 34 SEG[7] LCD Segment 7 22 22 35 SEG[6] LCD Segment 6 23 23 36 SEG[5] LCD Segment 5 24 24 37 SEG[4] LCD Segment 4 25 25 38 SEG[3] LCD Segment 3 26 26 39 SEG[2] LCD Segment 2 27 27 42 SEG[1] LCD Segment 1 28 28 43 Reset Input reset terminal, internal pull-down 15 KOhm Main reset 29 29 44 Test Input test terminal, internal pull-down 15 KOhm For EM tests only, ground 0 ! Except when needed for MFP programming 30 30 45 PSP[0] Input/output , open drain serial port : SIN parallel out terminal 0 Serial interface data in or parallel data[0] in/out 31 31 46 PSP[1] Output , open drain serial port : Ready/CS parallel out terminal 1 Serial interface Ready CS or parallel data[1] in/out 32 32 47 PSP[2] Output , open drain serial port : SOUT parallel out terminal 2 Serial interface data out or parallel data[2] in/out 33 33 49 PSP[3] Input/output , open drain serial port : SCLK parallel out terminal 3 Serial interface clock I/O or parallel data[3] in/out 34 34 50 PB[0] Input/output, open drain port B terminal 0 Port B data[0] I/O or Ck[1] output |
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