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REV: 101006

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

FEATURES

 80C32-Compatible

8051 Pin and Instruction Set Compatible

Four 8-Bit I/O Ports

Three 16-Bit Timer/Counters

256 Bytes Scratchpad RAM

Addresses 64kB ROM and 64kB RAM

 High-Speed Architecture

4 Clocks/Machine Cycle (8032 = 12)

DC to 33MHz (DS80C320)

DC to 18MHz (DS80C323)

Single-Cycle Instruction in 121ns

Uses Less Power for Equivalent Work

Dual Data Pointer

Optional Variable Length MOVX to Access

Fast/Slow RAM/Peripherals

 High-Integration Controller Includes:

Power-Fail Reset

Programmable Watchdog Timer

Early Warning Power-Fail Interrupt

 Two Full-Duplex Hardware Serial Ports

 13 Total Interrupt Sources with Six

External

 Available in 40-Pin DIP, 44-Pin PLCC, and

44-Pin TQFP

The High-Speed Microcontroller User’s Guide must be

used in conjunction with this data sheet. Download it

at: www.maxim-ic.com/microcontrollers.

Data

sheets

contain

pin

descriptions,

feature

overviews, and electrical specifications, whereas the

user’s guide contains detailed information about

device features and operation.

PIN CONFIGURATIONS

DS80C320/DS80C323

High-Speed/Low-Power Microcontrollers

www.maxim-ic.com

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