OpenRAM/sky130A/tech/DRC_sky130A.rul

////////////////////////////////////////////////////////////
// DEFINE BOOLEAN LAYERS
////////////////////////////////////////////////////////////
LAYOUT USE DATABASE PRECISION YES

layer pwell              41
layer nwell              42
layer active             43
layer poly               46
layer nimplant           45
layer pimplant           44
layer contact            25
layer active_contact     48
layer poly_contact       47
layer metal1             49
layer via1               50
layer metal2             51
layer via2               61
layer metal3             62
layer glass              52
layer pad                26

//Enabling incremental connectivity for antenna rule checks
DRC Incremental Connect Yes

well = nwell OR pwell
gate = poly AND active
implant = nimplant OR pimplant
fieldpoly = poly NOT active

contactenc1 = active OR poly
contactenc = contactenc1 AND metal1
diode = contact AND active
act_poly = interact poly active

GROUP mask_check
//Well.2 Well.4 
Poly.1 Poly.2 Poly.3 Poly.4 Poly.5 
Active.1 Active.2 // Active.3  
Contact.1 Contact.2 Contact.3 Contact.4
Contact.5 Contact.6 Metal1.1 Metal1.2 Metal1.3 



//Well.1 {
//@Nwell and Pwell must not overlap
//AND nwell pwell
//}

//Well.2 {
//@Min spacing of pwell to nwell = 0.00  
//EXTERNAL nwell pwell < 0.00    
//}

//Well.4 {
//@Min width of nwell = 3.6      
//INTERNAL nwell < 3.6       
//}

Poly.1 {
@Min width of poly = 0.6    
INTERNAL poly < 0.6        
}

Poly.2 {
@Min spacing of gate poly = 0.9    
EXTERNAL gate < 0.9
}

Poly.3 {
@Min extension of poly past active = 0.6  
ENCLOSURE active poly < 0.6     
}

Poly.4 {
@Minimum active enclosure of gate =0.6     
ENCLOSURE poly active < 0.6         
}

Poly.5 {
@Minimum spacing of poly to active = 0.3    
EXTERNAL act_poly active < 0.3      
}

Active.1 {
@Minimum width of active = 0.9
INTERNAL active < 0.9
}

Active.2 {
@Minimum spacing of active areas =  0.9
EXTERNAL active < 0.9
}

//Active.3 {
//@Minimum well enclosure of active = 1.8
//ENCLOSURE active well < 1.8
//}

Contact.1 {
@Minimum width of contact = 0.6                 
INTERNAL contact < 0.6                    
}

Contact.2 {
@Minimum spacing of contact = 0.9         
EXTERNAL contact < 0.9                    
}

Contact.3 {
@Contact must be inside metal1 and active or poly
NOT contact contactenc
}

Contact.4 {
@Minimum active enclosure of contact = 0.3       
ENCLOSURE contact active < 0.3                    
}

Contact.5 {
@Minimum poly enclosure of contact = 0.3          
ENCLOSURE contact poly < 0.3                      
}

Contact.6 {
@Minimum spacing of contact to poly = 0.6         
EXTERNAL poly contact < 0.6                     
}

Metal1.1 {
@Minimum width of metal1 = 0.9                   
INTERNAL metal1 < 0.9                           
}

Metal1.2 {
@Minimum spacing of metal1 = 0.9                
EXTERNAL metal1 < 0.9                           
}

Metal1.3 {
@Metal1 must extend past contact by 0.3 on two opposite sides     
RECTANGLE ENCLOSURE contact metal1
GOOD 0.00 0.3 OPPOSITE 0.00 0.3 OPPOSITE
}

Metal1.4 {
@Metal1 must extend past via1 by 0.3 on two opposite sides       
RECTANGLE ENCLOSURE via1 metal1
GOOD 0.00 0.3 OPPOSITE 0.00 0.3 OPPOSITE
}

Via1.1 {
@Minimum width of via1 = 0.6           
INTERNAL via1 < 0.6                   
}

Via1.2 {
@Minimum spacing of via1 = 0.6       
EXTERNAL via1 < 0.6                 
}

Via1.3 {
@Via1 must be inside metal1
NOT via1 metal1
}


Metal2.1 {
@Minimum width of metal2 = 0.9
INTERNAL metal2 < 0.9
}

Metal2.2 {
@Minimum spacing of metal2 = 0.9  
EXTERNAL metal2 < 0.9             
}

Metal2.3 {
@Metal2 must extend past via1 by 0.3 on two opposite sides          
RECTANGLE ENCLOSURE via1 metal2
GOOD 0.00 0.3 OPPOSITE 0.00 0.3 OPPOSITE                       
}

Metal2.4 {
@Metal2 must extend past via2 by 0.3 on two opposite sides          
RECTANGLE ENCLOSURE via2 metal2
GOOD 0.00 0.3 OPPOSITE 0.00 0.3 OPPOSITE                          
}

Via2.1 {
@Minimum width of via2 = 0.6     
INTERNAL via2 < 0.6             
}

Via2.2 {
@Minimum spacing of via2 = 0.9            
EXTERNAL via2 < 0.9                     
}

Via2.3 {
@Via2 must be inside metal2
NOT via2 metal2
}

Via2.4 {
@Via2 must be inside metal3
NOT via2 metal3
}

Metal3.1 {
@Minimum width of metal3 = 1.5             
INTERNAL metal3 < 1.5                      
}

Metal3.2 {
@Minimum spacing of metal3 = 0.9           
EXTERNAL metal3 < 0.9                      
}

Metal3.3 {
@Metal3 must extend past via2 by 0.6 on two opposite sides               
RECTANGLE ENCLOSURE via2 metal3
GOOD 0.00 0.6 OPPOSITE 0.00 0.6 OPPOSITE            
}