8031AH 8051AH
8032AH 8052AH
MCS 51
NMOS SINGLE-CHIP 8-BIT MICROCONTROLLERS
Automotive
Y
Y
Y
Y
Y
Y
High Performance HMOS Process
Internal Timers Event Counters
2-Level Interrupt Priority Structure
32 I O Lines (Four 8-Bit Ports)
64K Program Memory Space
Security Feature Protects EPROM Parts
Against Software Piracy
Boolean Processor
Y
Y
Bit-Addressable RAM
Programmable Full Duplex Serial
Channel
111 Instructions (64 Single-Cycle)
64K Data Memory Space
Available in PLCC and DIP Packages
Y
Y
Y
Y
The MCS 51 microcontroller products are optimized for control applications Byte-processing and numerical
operations on small data structures are facilitated by a variety of fast addressing modes for accessing the
internal RAM The instruction set provides a convenient menu of 8-bit arithmetic instructions including multiply
and divide instructions Extensive on-chip support is provided for one-bit variables as a separate data type
allowing direct bit manipulation and testing in control and logic systems that require Boolean processing
Device
8052AH
8051AH
8032AH
8031AH
Internal Memory
Program
8K x 8 ROM
4K x 8 ROM
none
none
Data
256 x 8 RAM
128 x 8 RAM
256 x 8 RAM
128 x 8 RAM
Timers
Event Counters
3 x 16-Bit
2 x 16-Bit
3 x 16-Bit
2 x 16-Bit
Interrupts
6
5
6
5
NOTICE
This datasheet contains information on products in full production Specifications within this datasheet
are subject to change without notice Verify with your local Intel sales office that you have the latest
datasheet before finalizing a design
Other brands and names are the property of their respective owners
Information in this document is provided in connection with Intel products Intel assumes no liability whatsoever including infringement of any patent or
copyright for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products Intel retains the right to make
changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata
COPYRIGHT
INTEL CORPORATION 1995
February 1995
Order Number 270499-006
INTEL [ INTEL CORPORATION ]
