Supported Devices
                            
                        
                            
                            
                                Features
                            
                        
                            
                                Operating Conditions
                            
                            
                        
                            
                                Pin Information
                            
                            
                        
                            
                                Device Package and Ordering Code
                            
                            
                        
                            
                                Memory Array Organization
                            
                            
                        
                            
                                Memory Operations
                            
                            
                        
                            
                                Registers
                            
                            
                        
                            
                                Summary of Operation Codes
                            
                            
                        
                            
                            
                                Power Mode
                            
                        
                            
                                Timing Information
                            
                            
                        
                            
                            
                                Programming and Configuration File Support
                            
                        
                            
                            
                                Document Revision History for EPCQ-L Serial Configuration Devices Datasheet
                            
                        
                    
                
                                                            
                                                            
                                                                
                                                                
                                                                    Block Protection Bits in EPCQ-L256 when TB Bit is Set to 0
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    Block Protection Bits in EPCQ-L256 when TB Bit is Set to 1
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    Block Protection Bits in EPCQ-L512 when TB Bit is Set to 0
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    Block Protection Bits in EPCQ-L512 when TB Bit is Set to 1
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    Block Protection Bits in EPCQ-L1024 when TB Bit is Set to 0
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    Block Protection Bits in EPCQ-L1024 when TB Bit is Set to 1
                                                                
                                                                
                                                            
                                                        
                                                    
                                    
                                    
                                        
                                        
                                            4BYTEADDREN and 4BYTEADDREX Operations (B7h and E9h)
                                        
                                        
                                    
                                        
                                        
                                            Write Enable Operation (06h)
                                        
                                        
                                    
                                        
                                        
                                            Write Disable Operation (04h)
                                        
                                        
                                    
                                        
                                        
                                            Read Bytes Operation (03h)
                                        
                                        
                                    
                                        
                                        
                                            Fast Read Operation (Bh)
                                        
                                        
                                    
                                        
                                        
                                            Extended Quad Input Fast Read Operation (EBh)
                                        
                                        
                                    
                                        
                                        
                                            Read Device Identification Operation (9Eh or 9Fh)
                                        
                                        
                                    
                                        
                                        
                                            Write Bytes Operation (02h)
                                        
                                        
                                    
                                        
                                        
                                            Extended Quad Input Fast Write Bytes Operation (12h)
                                        
                                        
                                    
                                        
                                        
                                            Erase Bulk Operation (C7h)
                                        
                                        
                                    
                                        
                                        
                                            Erase Die Operation (C4h)
                                        
                                        
                                    
                                        
                                        
                                            Erase Sector Operation (D8h)
                                        
                                        
                                    
                                
                            Read Device Identification Operation (9Eh or 9Fh)
This operation reads the 8-bit device identification of the EPCQ-L device from the DATA1 output pin. If this operation is shifted in while an erase or write cycle is in progress, the operation is not executed and does not affect the erase or write cycle in progress.
| EPCQ-L Device | Silicon ID (Binary Value) | 
|---|---|
| EPCQ-L256 | b'0001 1001 | 
| EPCQ-L512 | b'0010 0000 | 
| EPCQ-L1024 | b'0010 0001 | 
The 8-bit device identification of the EPCQ-L device is shifted out on the DATA1 pin on the falling edge of the DCLK signal. LSB is first shifted into the FPGA device.
   Figure 14. Read Device Identification Operation Timing Diagram