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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.
November 1994COPYRIGHT ' INTEL CORPORATION, 1995 Order Number: 272356-003
8XL51FA/FB/FC
LOW VOLTAGE
CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLERS
Commercial/Express
87L51FA/83L51FA/80L51FA/87L51FB/83L51FB/87L51FC/83L51FC
Y
High Performance CHMOS OTP ROM/
ROM/CPU
Y
Low Voltage Operation
Y
20 MHz Commercial/16 MHz Express
Operation
Y
Three 16-Bit Timer/Counters
Y
Programmable Counter Array with:
— High Speed Output,
— Compare/Capture,
— Pulse Width Modulator,
— Watchdog Timer Capabilities
Y
Up/Down Timer/Counter
Y
Three Level Program Lock System
Y
8K/16K/32K On-Chip Program Memory
Y
256 Bytes of On-Chip Data RAM
Y
Improved Quick Pulse Programming
Algorithm
Y
Boolean Processor
Y
32 Programmable I/O Lines
Y
7 Interrupt Sources
Y
Four Level Interrupt Priority
Y
Programmable Serial Channel with:
— Framing Error Detection
— Automatic Address Recognition
Y
64K External Program Memory Space
Y
64K External Data Memory Space
Y
MCS 51 Microcontroller Compatible
Instruction Set
Y
Power Saving Idle and Power Down
Modes
Y
ONCE (On-Circuit Emulation) Mode
Y
Extended Temperature Range
(
b
40§Cto
a
85§C)
MEMORY ORGANIZATION
Device
ROM OTP ROM
Version
ROMLESS
Version
ROM/
Bytes
RAM
OTP ROM
Bytes
83L51FA 87L51FA 80L51FA 8K 256
83L51FB 87L51FB 80L51FA 16K 256
83L51FC 87L51FC 80L51FA 32K 256
These devices can address up to 64 Kbytes of external program/data memory.
The Intel 8XL51FA/8XL51FB/8XL51FC 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 microcontroller family, the
8XL51FA/8XL51FB/8XL51FC uses the same powerful instruction set, has the same architecture, and is pin-
for-pin compatible with the existing MCS 51 microcontroller products.
The 8XL51FX is a 3V version of current 8XC51FX and will operate from 2.7V to 3.6V at a frequency range of
3.5 MHz to 16 MHz (Express)/20 MHz (Commercial).
For the remainder of this document, the 8XL51FA, 8XL51FB, 8XL51FC will be referred to as the 8XL51FX,
unless information applies to a specific device.