|   | Single power supply can operate from 2.4V to 5.5V at 8MHz, or from 3.6V to 5.5V at 16MHz. | 
                            
                            
                              |   | Program ROM can be up to 127k x 12-bit. (00000H~5FFFFH, 6 banks) | 
                            
                            
                              |   | Data SRAM can be up to 448 x 4-bit. (20H~FFH per page, total 2 pages) | 
                            
                            
                              |   | There are total 24 I/O pins, PRA/PRB/PRC/PRD/PRE/PRF. Each pin of all ports can be wake-up port when they are configured as input or IO mode | 
                            
                            
                              |   | There are two kinds of clock sources in the device of AM4F.
a). Resistor mode (RM). 
b). High frequency crystal mode (HM). |