AT89S51 Microcontroller

FEATURES: 

• 4K Bytes of In-System Programmable (ISP) Flash Memory – Endurance: 1000 Write/Erase Cycles 

• 4.0V to 5.5V Operating Range 

• Fully Static Operation: 0 Hz to 33 MHz 

• Three-level Program Memory Lock 

• 128 x 8-bit Internal RAM 

• 32 Programmable I/O Lines 

• Two 16-bit Timer/Counters 

• Six Interrupt Sources 

• Full Duplex UART Serial Channel 

• Low-power Idle and Power-down Modes 

• Interrupt Recovery from Power-down Mode 

• Watchdog Timer 

• Dual Data Pointer 

• Power-off Flag 

• Fast Programming Time 

• Flexible ISP Programming (Byte and Page Mode) 

SPECIFICATIONS: 

• Core Processor: 8051       
• Data Bus Width: 8 bit       
• Maximum Clock Frequency: 33 MHz 
• Program Memory Size: 4 KB       
• Program Memory Type: Flash      
• RAM Size: 128 B     
• ADC: No                                          
• Number of Programmable I/Os: 32           
• Number of Timers: 2              
• Supply Voltage Range: 4 V to 5.5 V 
• Package: PDIP