8XC51R Datasheet, PDF (1/20 Pages) Intel Corporation – CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

8XC51RA RB RC
CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
Commercial Express
87C51RA 83C51RA 80C51RA 87C51RB 83C51RB 87C51RC 83C51RC
See Table 1 for Proliferation Options
Y High Performance CHMOS EPROM
ROM CPU
Y 24 MHz Operation
Y 512 Bytes of On-Chip Data RAM
Y Dedicated Hardware Watchdog Timer
(One-Time Enabled with Reset-Out)
Y Three 16-Bit Timer Counters
Y Programmable Clock Out
Y Up Down Timer Counter
Y Three Level Program Lock System
Y 8K 16K 32K On-Chip Program Memory
Y Improved Quick Pulse Programming
Algorithm
Y Boolean Processor
Y 32 Programmable I O Lines
Y 6 Interrupt Sources
Y Programmable Serial Channel with
Framing Error Detection
Automatic Address Recognition
Y TTL and CMOS Compatible Logic
Levels
Y 64K External Program Memory Space
Y 64K External Data Memory Space
Y MCS 51 Compatible Instruction Set
Y Power Saving Idle and Power Down
Modes
Y ONCE (On-Circuit Emulation) Mode
Y Four-Level Interrupt Priority
Y Extended Temperature Range
(^b40 C to ^a85 C)
MEMORY ORGANIZATION
ROMless
Device
80C51RA
80C51RA
80C51RA
ROM
Device
83C51RA
83C51RB
83C51RC
EPROM
Version
87C51RA
87C51RB
87C51RC
ROM EPROM
Bytes
8K
16K
32K
These devices can address up to 64 Kbytes of external program data memory
RAM
Bytes
512
512
512
The Intel 8XC51RA 8XC51RB 8XC51RC is a single-chip control-oriented microcontroller which is fabricated
on Intel’s reliable CHMOS III-E technology Being a member of the MCS 51 family of controllers the
8XC51RA 8XC51RB 8XC51RC uses the same powerful instruction set has the same architecture and is pin-
for-pin compatible with the existing MCS 51 family of products The 8XC51RA 8XC51RB 8XC51RC is an
enhanced version of the 8XC52 8XC54 8XC58 The added features make it an even more powerful microcon-
troller for applications that require 512 bytes of on-chip data RAM and dedicated hardware WatchDog Timer
with reset-out features
Throughout this document 8XC51RX will refer to the 8XC51RA 8XC51RB and 8XC51RC unless information
applies to a specific device
For a detailed description of 8XC51RA RB RC refer to the 8XC51RA RB RC Hardware Description order
number 272668
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
December 1995
Order Number 272659-002