| Parameters | 
                                                                                                                        
                                                | Mfr | Atmel | 
                                                                                    
                                                | Series | AT91 | 
                                                                                    
                                                | Package | Bulk | 
                                                                                    
                                                | Product Status | Active | 
                                                                                    
                                                | Core Processor | ARM7® | 
                                                                                    
                                                | Core Size | 16/32-Bit | 
                                                                                    
                                                | Speed | 33MHz | 
                                                                                    
                                                | Connectivity | EBI/EMI, SPI, UART/USART | 
                                                                                    
                                                | Peripherals | WDT | 
                                                                                    
                                                | Number of I/O | 54 | 
                                                                                    
                                                | Program Memory Size | - | 
                                                                                    
                                                | Program Memory Type | ROMless | 
                                                                                    
                                                | EEPROM Size | - | 
                                                                                    
                                                | RAM Size | 8K x 8 | 
                                                                                    
                                                | Voltage - Supply (Vcc/Vdd) | 2.7V ~ 3.6V | 
                                                                                    
                                                | Data Converters | - | 
                                                                                    
                                                | Oscillator Type | External | 
                                                                                    
                                                | Operating Temperature | -40°C ~ 85°C (TA) | 
                                                                                    
                                                | Mounting Type | Surface Mount | 
                                                                                    
                                                | Package / Case | 144-LFBGA | 
                                                                                    
                                                | Supplier Device Package | 144-BGA (13x13) | 
                                                                                    
                                                | Base Product Number | AT91M42800A | 
                                                                                    
                                                | ECCN | 3A991A2 | 
                                                                                    
                                                | HTSUS | 8542.31.0001 | 
                                                                                    
                                                | Standard Package | 1 | 
                                                                                                                
                                
                             
                                                ARM7® AT91 Microcontroller IC 16/32-Bit 33MHz ROMless 144-BGA (13x13)