P89V51RD2 Microcontroller

P89V51RD2 Microcontroller

The P89V51RD2 is an 8-bit microcontroller manufactured by NXP Semiconductors. It is a high-performance derivative of the 8051 microcontroller family and is fully instruction-set compatible with the standard 8051.

This microcontroller features on-chip Flash program memory, RAM, and a wide range of peripherals. It supports In-System Programming (ISP) and In-Application Programming (IAP), allowing firmware to be updated without removing the device from the circuit. With enhanced performance and low-power operation, it is suitable for modern embedded control applications.

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Features

• 8-bit 8051-compatible CPU
• Operating voltage: 2.7 V – 5.5 V
• Maximum clock frequency: Up to 40 MHz
• Program memory: 64 KB Flash (IAP & ISP supported)
• RAM: 1 KB internal RAM
• I/O pins: 32 programmable I/O pins (4 ports)
• Timers/Counters:
• Three 16-bit timers (Timer0, Timer1, Timer2)
• Serial communication:
• Full-duplex UART
• Interrupts:
• 6 interrupt sources with two priority levels
• Watchdog Timer (WDT)
• Power-saving modes: Idle and Power-down
• On-chip oscillator support
• Security features: Code protection
• Available packages: DIP, PLCC, and SMD (TQFP)

Applications

• Embedded control systems
• Industrial automation
• Consumer electronics
• Home automation systems
• Communication and serial interface projects
• Data acquisition systems
• Educational and training kits