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changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata

February 1994

COPYRIGHT

INTEL CORPORATION 1995

Order Number 270849-004

87C5487C54-20

CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

WITH 16 KBYTES USER PROGRAMMABLE EPROM

Automotive

Y

Extended Automotive Temperature

Y

High Performance CHMOS EPROM

Y

Three 16-Bit TimerCounters

Y

One-to-Three Level ProgramData Lock

System

Y

16K On-Chip EPROMROM

Y

256 Bytes of On-Chip Data RAM

Y

Quick Pulse Programming Algorithm

Y

Boolean Processor

Y

32 Programmable IO Lines

Y

7 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

RFI Reduction Mode

Y

Available in 12 MHz 16 MHz and

20 MHz Versions

Y

Available in PLCC and DIP Packages

(See Packaging Spec Order

231369)

MEMORY ORGANIZATION

PROGRAM MEMORY Up to 16 Kbytes of the program memory can reside in the on-chip EPROM The device

can also address up to 64K of program memory external to the chip

DATA MEMORY This microcontroller has a 256 x 8 on-chip RAM In addition it can address up to 64 Kbytes of

external data memory

The Intel 87C54 is a single-chip control-oriented microcontroller which is fabricated on Intel’s reliable

CHMOS EPROM technology Being a member of the MCS-51 family the 87C54 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 87C54 is an enhanced version of the 87C51FB Its added features of 16 Kbytes of program

memory make it an even more powerful microcontroller for applications that require High Speed IO and

updown counting capabilities such as brake and traction control