JEDEC PUBLICATION 95 PAGE 4.21-7/A Table 4.21-1-Symbols,Recommended Values and Tolerances(cont'd) SYMBOL DEFINITION ele1 MIN NOM MAX NOTES No interconnect terminals on The maximum number of either edge:ND =((D-1.0)/e)+ Truncate to an integer ND land array terminal rows 1 All in the axis parallel to (remove all decimal Interconnect terminals on one datum B portions) or both edges:ND=((D-2.0)/e) +1 No bond finger terminals on The maximum number of either edge:NE =((E-1.0)/e)+ NE land array terminal rows 1 Truncate to an integer in the axis parallel to All (remove all decimal Bond finger terminals on one or datum A portions) both edges:NE=((E-2.0)/e)+ 1 Bond finger terminals on one The maximum number of edge:MD=(D-1.0)/e1)+1 Truncate to an integer MD interconnect terminals in the axis parallel to datum All (remove all decimal Bond finger terminals on both portions).Variable pitch B edges:MD =(2*((D-1.0)/e1)) is allowed +1 Bond finger terminals on one The maximum number of edge:ME=(E-1.0)/e1)+1 Truncate to an integer ME interconnect terminals in the axis parallel to datum All (remove all decimal Bond finger terminals on two portions).Variable pitch is A edges:ME=(2*(E-1.0)/e1) allowed +1 The bilateral profile tolerance that controls the position of the package aaa body sides.The centers All 0.10 of the profile zones are defined by the basic dimensions D and E The tolerance zone located parallel to datum bbb C in which the top surface All 0.10 to the package must be ocated The tolerance within This tolerance is ddd which the bottom surface of all terminals must be All 0.10 commonly known as the coplanarity of the package ocated terminals.JEDEC PUBLICATION 95 PAGE 4.21-7/A Table 4.21-1 – Symbols, Recommended Values and Tolerances (cont’d) SYMBOL DEFINITION e/e1 MIN NOM MAX NOTES No interconnect terminals on either edge: ND = ((D-1.0)/e) + 1 ND The maximum number of land array terminal rows in the axis parallel to datum B All Interconnect terminals on one or both edges: ND = ((D-2.0)/e) + 1 Truncate to an integer (remove all decimal portions) No bond finger terminals on either edge: NE = ((E-1.0)/e) + 1 NE The maximum number of land array terminal rows in the axis parallel to datum A All Bond finger terminals on one or both edges: NE = ((E-2.0)/e) + 1 Truncate to an integer (remove all decimal portions) Bond finger terminals on one edge: MD = ((D-1.0)/e1) + 1 MD The maximum number of interconnect terminals in the axis parallel to datum B All Bond finger terminals on both edges: MD = (2*((D-1.0)/e1)) + 1 Truncate to an integer (remove all decimal portions). Variable pitch is allowed Bond finger terminals on one edge: ME = ((E-1.0)/e1) + 1 ME The maximum number of interconnect terminals in the axis parallel to datum A All Bond finger terminals on two edges: ME = (2*((E-1.0)/e1)) + 1 Truncate to an integer (remove all decimal portions). Variable pitch is allowed aaa The bilateral profile tolerance that controls the position of the package body sides. The centers of the profile zones are defined by the basic dimensions D and E All 0.10 bbb The tolerance zone located parallel to datum C in which the top surface to the package must be located All 0.10 ddd The tolerance within which the bottom surface of all terminals must be located All 0.10 This tolerance is commonly known as the coplanarity of the package terminals