AcornElectronMainboard

DRAM.lib

18:f1d60a768fbd
2022-07-05 Paul Boddie Added decoupling capacitors for RAM chips and tidied the layout somewhat.
     1 EESchema-LIBRARY Version 2.4     2 #encoding utf-8     3 #     4 # 41464     5 #     6 DEF 41464 U 0 40 Y Y 1 F N     7 F0 "U" 0 600 50 H V C CNN     8 F1 "41464" 0 500 50 H V C CNN     9 F2 "" -50 50 50 H I C CNN    10 F3 "" -50 50 50 H I C CNN    11 DRAW    12 S -250 450 250 -450 0 1 0 f    13 X ~OE 1 -350 400 100 R 50 50 1 1 I    14 X A7 10 350 -400 100 L 50 50 1 1 I    15 X A3 11 350 -300 100 L 50 50 1 1 I    16 X A2 12 350 -200 100 L 50 50 1 1 I    17 X A1 13 350 -100 100 L 50 50 1 1 I    18 X A0 14 350 0 100 L 50 50 1 1 I    19 X DQ3 15 350 100 100 L 50 50 1 1 B    20 X ~CAS 16 350 200 100 L 50 50 1 1 I    21 X DQ4 17 350 300 100 L 50 50 1 1 B    22 X VSS 18 350 400 100 L 50 50 1 1 W    23 X DQ1 2 -350 300 100 R 50 50 1 1 B    24 X DQ2 3 -350 200 100 R 50 50 1 1 B    25 X ~W 4 -350 100 100 R 50 50 1 1 I    26 X ~RAS 5 -350 0 100 R 50 50 1 1 I    27 X A6 6 -350 -100 100 R 50 50 1 1 I    28 X A5 7 -350 -200 100 R 50 50 1 1 I    29 X A4 8 -350 -300 100 R 50 50 1 1 I    30 X VCC 9 -350 -400 100 R 50 50 1 1 W    31 ENDDRAW    32 ENDDEF    33 #    34 # 4164    35 #    36 DEF 4164 U 0 40 Y Y 1 F N    37 F0 "U" 0 550 50 H V C CNN    38 F1 "4164" 0 450 50 H V C CNN    39 F2 "" -50 0 50 H I C CNN    40 F3 "" -50 0 50 H I C CNN    41 DRAW    42 S -250 400 250 -400 0 1 0 f    43 X NC 1 -350 350 100 R 50 50 1 1 N    44 X A5 10 350 -250 100 L 50 50 1 1 I    45 X A4 11 350 -150 100 L 50 50 1 1 I    46 X A3 12 350 -50 100 L 50 50 1 1 I    47 X A6 13 350 50 100 L 50 50 1 1 I    48 X DO 14 350 150 100 L 50 50 1 1 T    49 X ~CAS 15 350 250 100 L 50 50 1 1 I    50 X VSS 16 350 350 100 L 50 50 1 1 W    51 X DI 2 -350 250 100 R 50 50 1 1 I    52 X ~WE 3 -350 150 100 R 50 50 1 1 I    53 X ~RAS 4 -350 50 100 R 50 50 1 1 I    54 X A0 5 -350 -50 100 R 50 50 1 1 I    55 X A2 6 -350 -150 100 R 50 50 1 1 I    56 X A1 7 -350 -250 100 R 50 50 1 1 I    57 X VCC 8 -350 -350 100 R 50 50 1 1 W    58 X A7 9 350 -350 100 L 50 50 1 1 I    59 ENDDRAW    60 ENDDEF    61 #    62 # TM4164EA4    63 #    64 DEF TM4164EA4 U 0 40 Y Y 1 F N    65 F0 "U" 0 1600 50 H V C CNN    66 F1 "TM4164EA4" 0 1700 50 H V C CNN    67 F2 "" 50 500 50 H I C CNN    68 F3 "" 50 500 50 H I C CNN    69 DRAW    70 S -250 1150 250 -1150 0 1 0 f    71 X NC 1 350 -650 100 L 50 50 1 1 N    72 X Q2 10 350 750 100 L 50 50 1 1 T    73 X ~W 11 350 -1050 100 L 50 50 1 1 I    74 X A1 12 350 50 100 L 50 50 1 1 I    75 X A3 13 350 -150 100 L 50 50 1 1 I    76 X A6 14 350 -450 100 L 50 50 1 1 I    77 X Q3 15 350 550 100 L 50 50 1 1 T    78 X D3 16 350 650 100 L 50 50 1 1 I    79 X A2 17 350 -50 100 L 50 50 1 1 I    80 X A0 18 350 150 100 L 50 50 1 1 I    81 X ~RAS 19 350 -950 100 L 50 50 1 1 I    82 X VDD 2 0 1250 100 D 50 50 1 1 W    83 X D4 20 350 450 100 L 50 50 1 1 I    84 X Q4 21 350 350 100 L 50 50 1 1 T    85 X VSS 22 0 -1250 100 U 50 50 1 1 W    86 X D1 3 350 1050 100 L 50 50 1 1 I    87 X Q1 4 350 950 100 L 50 50 1 1 T    88 X ~CAS 5 350 -850 100 L 50 50 1 1 I    89 X A7 6 350 -550 100 L 50 50 1 1 I    90 X A5 7 350 -350 100 L 50 50 1 1 I    91 X A4 8 350 -250 100 L 50 50 1 1 I    92 X D2 9 350 850 100 L 50 50 1 1 I    93 ENDDRAW    94 ENDDEF    95 #    96 #End Library