chips.prt

cadence公司pcb内部培训的资料,并且附带其中的例子程序!比市面上任何一本cadence的书好!

FILE_TYPE=LIBRARY_PARTS;
TIME=' Created/Modified on Mon Mar 19 13:22:22 2001' ;
primitive 'TC55B4257','TC55B4257_SOIC';
  pin
    'A0':
      PIN_NUMBER='(5)';
      INPUT_LOAD='(-0.01,0.01)';
    'A1':
      PIN_NUMBER='(4)';
      INPUT_LOAD='(-0.01,0.01)';
    'A2':
      PIN_NUMBER='(3)';
      INPUT_LOAD='(-0.01,0.01)';
    'A3':
      PIN_NUMBER='(2)';
      INPUT_LOAD='(-0.01,0.01)';
    'A4':
      PIN_NUMBER='(32)';
      INPUT_LOAD='(-0.01,0.01)';
    'A5':
      PIN_NUMBER='(31)';
      INPUT_LOAD='(-0.01,0.01)';
    'A6':
      PIN_NUMBER='(30)';
      INPUT_LOAD='(-0.01,0.01)';
    'A7':
      PIN_NUMBER='(29)';
      INPUT_LOAD='(-0.01,0.01)';
    'A8':
      PIN_NUMBER='(28)';
      INPUT_LOAD='(-0.01,0.01)';
    'A9':
      PIN_NUMBER='(22)';
      INPUT_LOAD='(-0.01,0.01)';
    'A10':
      PIN_NUMBER='(21)';
      INPUT_LOAD='(-0.01,0.01)';
    'A11':
      PIN_NUMBER='(20)';
      INPUT_LOAD='(-0.01,0.01)';
    'A12':
      PIN_NUMBER='(19)';
      INPUT_LOAD='(-0.01,0.01)';
    'A13':
      PIN_NUMBER='(18)';
      INPUT_LOAD='(-0.01,0.01)';
    'A14':
      PIN_NUMBER='(15)';
      INPUT_LOAD='(-0.01,0.01)';
    'A15':
      PIN_NUMBER='(14)';
      INPUT_LOAD='(-0.01,0.01)';
    'A16':
      PIN_NUMBER='(13)';
      INPUT_LOAD='(-0.01,0.01)';
    'A17':
      PIN_NUMBER='(12)';
      INPUT_LOAD='(-0.01,0.01)';
    '-WE':
      PIN_NUMBER='(11)';
      INPUT_LOAD='(-0.01,0.01)';
    '-CE':
      PIN_NUMBER='(6)';
      INPUT_LOAD='(-0.01,0.01)';
    '-EO':
      PIN_NUMBER='(27)';
      INPUT_LOAD='(-0.01,0.01)';
    'IO1':
      PIN_NUMBER='(1)';
      INPUT_LOAD='(-0.01,0.01)';
      OUTPUT_LOAD='(1.0,-1.0)';
      BIDIRECTIONAL='TRUE';
    'IO2':
      PIN_NUMBER='(16)';
      INPUT_LOAD='(-0.01,0.01)';
      OUTPUT_LOAD='(1.0,-1.0)';
      BIDIRECTIONAL='TRUE';
    'IO3':
      PIN_NUMBER='(17)';
      INPUT_LOAD='(-0.01,0.01)';
      OUTPUT_LOAD='(1.0,-1.0)';
      BIDIRECTIONAL='TRUE';
    'DQ1':
      PIN_NUMBER='(7)';
      INPUT_LOAD='(-0.01,0.01)';
      OUTPUT_LOAD='(1.0,-1.0)';
      BIDIRECTIONAL='TRUE';
    'DQ2':
      PIN_NUMBER='(10)';
      INPUT_LOAD='(-0.01,0.01)';
      OUTPUT_LOAD='(1.0,-1.0)';
      BIDIRECTIONAL='TRUE';
    'DQ3':
      PIN_NUMBER='(23)';
      INPUT_LOAD='(-0.01,0.01)';
      OUTPUT_LOAD='(1.0,-1.0)';
      BIDIRECTIONAL='TRUE';
    'DQ4':
      PIN_NUMBER='(26)';
      INPUT_LOAD='(-0.01,0.01)';
      OUTPUT_LOAD='(1.0,-1.0)';
      BIDIRECTIONAL='TRUE';
  end_pin;
  body
    POWER_PINS='(VCC:8,24;GND:9,25)';
    CLASS='IC';
    PART_NAME='TC55B4257';
    PHYS_DES_PREFIX='U';
  end_body;
end_primitive;
END.