80C51RA - NXP

80C51RA 8-bit microcontroller

Three different Single-Chip 8-Bit Microcontroller families are presented in this datasheet: • 8XC54/8XC58 • 80C51FA/8XC51FA/8XC51FB/8XC51FC • 80C51RA+/8XC51RA+/8XC51RB+/8XC51RC+/8XC51RD+ For applications requiring 4K ROM/EPROM, see the 8XC51/80C31 8-bit CMOS (low voltage, low power, and high speed) microcontroller families datasheet. All the families are Sin.

Features

make it an even more powerful microcontroller for applications that require pulse width modulation, high-speed I/O and up/down counting capabilities such as motor control. It also has a more versatile serial channel that facilitates multiprocessor communications. FEATURES
• 80C51 Central Processing Unit
• Speed up to 33 MHz
• Full static operation
• Operating voltage range: 2.7 V to 5.5 V @ 16 MHz
• Security bits:
  – ROM
  – 2 bits
  – OTP
  –EPROM
  – 3 bits
• Encryption array
  – 64 bytes
• RAM expandable to 64K bytes
• 4 level priority interrupt
• 6 or7 interrupt sources, depending on device
• Four 8-.