| Parameters | 
                                    
                                                                                                                        
                                                | Mfr | 
                                                STMicroelectronics | 
                                            
                                                                                    
                                                | Series | 
                                                - | 
                                            
                                                                                    
                                                | Package | 
                                                Tape & Reel (TR) | 
                                            
                                                                                    
                                                | Product Status | 
                                                Obsolete | 
                                            
                                                                                    
                                                | Conevo-Key Programmable | 
                                                Not Verified | 
                                            
                                                                                    
                                                | Type | 
                                                Clock/Calendar | 
                                            
                                                                                    
                                                | Features | 
                                                Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer | 
                                            
                                                                                    
                                                | Memory Size | 
                                                128B | 
                                            
                                                                                    
                                                | Time Format | 
                                                HH:MM:SS:hh (24 hr) | 
                                            
                                                                                    
                                                | Date Format | 
                                                YY-MM-DD-dd | 
                                            
                                                                                    
                                                | Interface | 
                                                I²C, 2-Wire Serial | 
                                            
                                                                                    
                                                | Voltage - Supply | 
                                                4.5V ~ 5.5V | 
                                            
                                                                                    
                                                | Voltage - Supply, Battery | 
                                                2.5V ~ 5.5V | 
                                            
                                                                                    
                                                | Current - Timekeeping (Max) | 
                                                1mA @ 4.5V ~ 5.5V | 
                                            
                                                                                    
                                                | Operating Temperature | 
                                                -40°C ~ 85°C | 
                                            
                                                                                    
                                                | Mounting Type | 
                                                Surface Mount | 
                                            
                                                                                    
                                                | Package / Case | 
                                                28-SOIC (0.295", 7.50mm Width) | 
                                            
                                                                                    
                                                | Supplier Device Package | 
                                                28-SO | 
                                            
                                                                                    
                                                | Base Product Number | 
                                                M41ST | 
                                            
                                                                                    
                                                | RoHS Status | 
                                                ROHS3 Compliant | 
                                            
                                                                                    
                                                | Moisture Sensitivity Level (MSL) | 
                                                1  (Unlimited) | 
                                            
                                                                                    
                                                | REACH Status | 
                                                REACH Unaffected | 
                                            
                                                                                    
                                                | ECCN | 
                                                EAR99 | 
                                            
                                                                                    
                                                | HTSUS | 
                                                8542.39.0001 | 
                                            
                                                                                    
                                                | Standard Package | 
                                                1,000 | 
                                            
                                                                                                                
                                
                             
                                                Real Time Clock (RTC) IC Clock/Calendar 128B I²C, 2-Wire Serial 28-SOIC (0.295", 7.50mm Width)