8XC51GB
CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
Commercial Express
87C51GB 8 Kbytes OTP 8 Kbytes Internal Program Memory
83C51GB 8 Kbytes Factory Programmable ROM
80C51GB CPU with RAM and I O
8XC51GB 3 5 MHz to 12 MHz
g
20% V
CC
8XC51GB-1 3 5 MHz to 16 MHz
g
20% V
CC
Y
Y
Y
8 Kbytes On-Chip ROM OTP ROM
256 Bytes of On-Chip Data RAM
Two Programmable Counter Arrays
with
2 x 5 High Speed Input Output
Channels Compare Capture
Pulse Width Modulators
Watchdog Timer Capabilities
Three 16-Bit Timer Counters with
Four Programmable Modes
Capture Baud Rate Generation
(Timer 2)
Dedicated Watchdog Timer
8-Bit 8-Channel A D with
Eight 8-Bit Result Registers
Four Programmable Modes
Programmable Serial Channel with
Framing Error Detection
Automatic Address Recognition
Serial Expansion Port
Programmable Clock Out
Extended Temperature Range
(
b
40 C to
a
85 C)
Y
48 Programmable I O Lines with
40 Schmitt Trigger Inputs
15 Interrupt Sources with
7 External 8 Internal Sources
4 Programmable Priority Levels
Pre-Determined Port States on Reset
High Performance CHMOS Process
TTL and CHMOS Compatible Logic
Levels
Power Saving Modes
64K External Data Memory Space
64K External Program Memory Space
Three Level Program Lock System
ONCE (ON-Circuit Emulation) Mode
Quick Pulse Programming Algorithm
MCS 51 Microcontroller Fully
Compatible Instruction Set
Boolean Processor
Oscillator Fail Detect
Available in 68-Pin PLCC
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
MEMORY ORGANIZATION
PROGRAM MEMORY Up to 8 Kbytes of the program memory can reside in the on-chip ROM Also the device
can 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 8XC51GB is a single-chip control oriented microcontroller which is fabricated on Intel’s CHMOS III-E
technology The 8XC51GB is an enhanced version of the 8XC51FA and uses the same powerful instruction
set and architecture as existing MCS 51 microcontroller products Added features make it an even more
powerful microcontroller for applications that require On-Chip A D Pulse Width Modulation High Speed I O
up down counting capabilities and memory protection features It also has a more versatile serial channel that
facilitates multi-processor communications
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
November 1994
Order Number 272337-002
INTEL [ INTEL CORPORATION ]
