MAXIM DS80C320, DS80C323 User Manual

www.maxim-ic.com

DS80C320/DS80C323

High-Speed/Low-Power Microcontrollers

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

PIN CONFIGURATIONS

TOP VIEW

 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.

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Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata

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REV: 101006

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