80C51RA +

Features:

*80C51 Central Processing Unit
*Speed up to 33MHz
*Full static operation
*Operating voltage range: 2.7V to 5.5V @ 16MHz
*Security bits:
  ROM 2 bits
  OTPEPROM 3 bits
*Encryption array 64 bytes
*RAM expandable to 64K bytes
*4 level priority interrupt
*6 or7 interrupt sources, depending on device
*Four 8-bit I/O ports
*Full-duplex enhanced UART
  Framing error detection
  Automatic address recognition
*Power control modes
  Clock can be stopped and resumed
  Idle mode
  Power down mode
*Programmable clock out
*Second DPTR register
*Asynchronous port reset
*Low EMI (inhibit ALE)


Pinout




Specifications

PARAMETER	RATING	UNIT
Operating temperature under bias	0 to +70 or 40 to +85
Storage temperature range	65 to +150
Voltage on EA/V pin to V	0 to +13.0	V
Voltage on any other pin to VSS	0.5 to +6.5	V
Maximum IOL per I/O pin	15	mA
Power dissipation (based on package heat transfer limitations, not device power consumption)	1.5	W

NOTES:
1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any conditions other than those described in the AC and DC Electrical Characteristics section of this specification is not implied.
2. This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive static charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated maximum.
3. Parameters are valid over operating temperature range unless otherwise specified. All voltages are with respect to V_ss unless otherwise noted.


Description

Three different Single-Chip 8-Bit Microcontroller families are presented in this datasheet:
*80C32/8XC52/8XC54/8XC58
*80C51FA/8XC51FA/8XC51FB/8XC51FC
*80C51RA+/8XC51RA+/8XC51RB+/8XC51RC+/8XC51RD+

For applications requiring 4K ROM/EPROM, see the 8XC51/80C318-bit CMOS (low voltage, low power, and high speed)
microcontroller families datasheet.

All the families are Single-Chip 8-Bit Microcontrollers manufactured in advanced CMOS process and are derivatives of the 80C51 microcontroller family. All the devices have the same instruction set as the 80C51.

These devices provide architectural enhancements that make them applicable in a variety of applications for general control systems.