• Family: MCS-51 / 8052 Family
• Core Architecture: 8052-Compatible CMOS Microcontroller

CPU

• Data Width: 8-bit
• Instruction Set: Fully compatible with Intel 8051/8052
• Boolean Processor: Yes
• Architecture: Harvard-style 8051 architecture

Memory

• Program Memory: None (ROMless device)
• External Program Memory Support: Up to 64 KB
• Internal RAM: 256 Bytes
• External Data Memory Support: Up to 64 KB

I/O

• Programmable I/O Lines: 32
• Ports:
  • Port 0 (8-bit)
  • Port 1 (8-bit)
  • Port 2 (8-bit)
  • Port 3 (8-bit)

Timers

• Timer 0: 16-bit Timer/Counter
• Timer 1: 16-bit Timer/Counter
• Timer 2: 16-bit Timer/Counter with:
  • Capture mode
  • Auto-reload mode
  • Baud-rate generation

Serial Interface

• UART: Full-Duplex Serial Port
• Multiprocessor Communication: Supported
• Variable Baud Rates: Supported

Interrupt System

• Interrupt Sources: 6
• Priority Levels: 2
• Nested Interrupt Capability: Yes

Clock & Performance

• Maximum Oscillator Frequency: 16 MHz
• Machine Cycle: 12 Clock Cycles
• Typical Throughput: Approximately 1.33 MIPS @ 16 MHz

Power Supply

• Operating Voltage: 4.5 V to 5.5 V
• Nominal Voltage: 5 V

Power Management

• Idle Mode
• Power-Down Mode
• CMOS Low-Power Operation

Oscillator

• On-chip oscillator amplifier
• Crystal, ceramic resonator, or external clock source supported

Package

• Package Type: PDIP
• Pin Count: 40 Pins
• Suffix N: Plastic Dual In-Line Package

Operating Temperature

• Commercial Version: 0°C to +70°C
• Industrial Variants: Available in other suffixes