M82510
ASYNCHRONOUS SERIAL CONTROLLER
Military
Y
Asynchronous Operation
5- to 9-Bit Character Format
Baud Rate DC to 288k
Complete Error Detection
Multiple Sampling Windows
Two Independent Four-Byte Transmit
and Receive FIFOs
Programmable Threshold
Two 16-bit Baud Rate Generators
Timers
System Clock Options
On-Chip Crystal Oscillator
External Clocks
Y
Y
Y
Y
Y
Y
MCS -51 9-Bit Protocol Support
Control Character Recognition
CHMOS III with Power Down Mode
Interrupts Maskable at Two Levels
Auto Echo and Loopback Modes
Seven I O Pins Dedicated and General
Purpose
Available in 28-Lead CERDIP and
28-Pad LCC Packages
Military Temperature Range
b
55 C to
a
125 C (T
C
)
Y
Y
Y
Y
Y
Y
The Intel CHMOS M82510 is designed to increase system efficiency in asynchronous environments such as
modems serial ports including expanding performance areas MCS -51 9-bit format and high speed async
The functional support provided in the M82510 is unparalleled 2 baud rate generators timers provide inde-
pendent data rates or protocol timeouts a crystal oscillator and smart modem I O simplify system logic New
features dual FIFOs and Control Character Recognition (CCR) dramatically reduce CPU interrupts and in-
crease software efficiency The M82510’s software versatility allows emulation of the INS 8250A 16450 for
IBM PC AT compatibility or a high performance mode configured by 35 control registers All interrupts are
maskable at 2 levels The multi-personality I O pins are configurable as desired A DPLL and multiple sampling
of serial data improve data reliability for high speed asynchronous communication The compact 28-pin
M82510 is fabricated in CHMOS III technology and includes a software powerdown option
IBM and PC AT are registered trademarks of IBM Corporation
271072 –1
Figure 1 Block Diagram
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 1996
March 1996
Order Number 271072-007
INTEL [ INTEL CORPORATION ]
