87C54 Datasheet, PDF (1/20 Pages) Intel Corporation – CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER WITH 16 KBYTES USER PROGRAMMABLE EPROM

87C54 87C54-20
CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
WITH 16 KBYTES USER PROGRAMMABLE EPROM
Automotive
Y Extended Automotive Temperature
Range (^b40 C to ^a125 C Ambient)
Y High Performance CHMOS EPROM
Y Three 16-Bit Timer Counters
Y One-to-Three Level Program Data Lock
System
Y 16K On-Chip EPROM ROM
Y 256 Bytes of On-Chip Data RAM
Y Quick Pulse Programming Algorithm
Y Boolean Processor
Y 32 Programmable I O 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 I O and
up down counting capabilities such as brake and traction control
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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
COPYRIGHT INTEL CORPORATION 1995
February 1994
Order Number 270849-004