DS80C323:High-Speed/Low-Power Microcontrollers

The DS80C320/DS80C323 are fast 80C31/80C32-compatible microcontrollers. Wasted clock and memory cycles have been removed using a redesigned processor core. As a result, every 8051 instruction is executed between 1.5 and 3 times faster than the original for the same crystal speed. Typical applications see a speed improvement of 2.5 times using the same code and same crystal. The DS80C320 offers a maximum crystal rate of 33MHz, resulting in apparent execution speeds of 82.5MHz (approximately 2.5X). The DS80C320/DS80C323 are pin compatible with all three packages of the standard 80C32 and offer the same timer/counters, serial port, and I/O ports. In short, the devices are extremely familiar to 8051users, but provide the speed of a 16-bit processor. The DS80C320 provides several extras in addition to greater speed. These include a second full hardware serial port, seven additional interrupts, programmable watchdog timer, power-fail interrupt and reset. The device also provides dual data pointers (DPTRs) to speed block data memory moves. It can also adjust the speed of off-chip data memory access to between two and nine machine cycles for flexibility in selecting memory and peripherals. The DS80C320 operating voltage ranges from 4.25V to 5.5V, making it ideal as a high-performance upgrade to existing 5V systems. For applications in which power consumption is critical, the DS80C323 offers the same feature set as the DS80C320, but with 2.7V to 5.5V operation. Designers must have two documents to fully use all the features of this device: this data sheet and the High-Speed Microcontroller User's Guide, available on our website at www.maximintegrated.com/microcontrollers. Data sheets contain pin descriptions, feature overviews, and electrical specifications, whereas our user's guides contain detailed information about device features and operation.

Key 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
DS80C320, DS80C323: Block Diagram
DS80C320, DS80C323: Block Diagram
DataSheet
titleDownload file
DS80C320-DS80C323 Data SheetDS80C320-DS80C323.pdf
Errata DS80C32380C323B3.pdf
Errata DS80C32380C323B5.pdf
Errata DS80C32380C323C4.pdf
Errata DS80C32380C323C5.pdf
Errata DS80C32380C323C6.pdf
Errata DS80C32380C323C7.pdf
Parametrics
Part NumberMCU CoreCore Clock Speed
(MHz)
Data ProcessingUSARTsTimer FeaturesPackage/PinsBudgetary
Price
maxSee Notes
DS80C3208051 (CISC)338-bit2WatchdogMQFP/44
PDIP(W)/40
PLCC/44
TQFP/44
$8.75 @1k
DS80C32318PDIP(W)/40
PLCC/44
TQFP/44
$4.02 @1k
Quality and Environmental Data
Additional Resources
Ordering Information
Part NumberNotesStatusRecommended ReplacementPackageTempRoHS
DS80C323-ECD18MHzNo Longer AvailableDS80C323-ECD+TQFP,;44 pin;148.8 mm²0°C to +70°CNo
DS80C323-ECD+ActiveTQFP,;44 pin;148.8 mm²0°C to +70°CLead Free
DS80C323-ECD+T&RActiveTQFP,;44 pin;148.8 mm²0°C to +70°CLead Free
DS80C323-ENDNo Longer AvailableDS80C323-END+TQFP,;44 pin;148.8 mm²-40°C to +85°CNo
DS80C323-END+ActiveTQFP,;44 pin;148.8 mm²-40°C to +85°CLead Free
DS80C323-MCD18MHzNo Longer AvailableDS80C323-MCD+PDIP(W),;40 pin;835.7 mm²0°C to +70°CNo
DS80C323-MCD+ActivePDIP(W),;40 pin;835.7 mm²0°C to +70°CLead Free
DS80C323-QCD18MHzNo Longer AvailableDS80C323-QCD+PLCC,;44 pin;311.5 mm²0°C to +70°CNo
DS80C323-QCD+ActivePLCC,;44 pin;311.5 mm²0°C to +70°CLead Free
DS80C323-QND+ActivePLCC,;44 pin;311.5 mm²-40°C to +85°CLead Free
Part NumberNotesStatusRecommended ReplacementPackageTempRoHS
DS80C323-QND+T&RActivePLCC,;44 pin;311.5 mm²-40°C to +85°CLead Free
DS80C323-QND/T&RNo Longer AvailableDS80C323-QND+T&RPLCC,;44 pin;311.5 mm²-40°C to +85°CLead Free
DS80C320-DS80C323.pdf DS80C323
80C323B3.pdf DS80C323
80C323B5.pdf DS80C323
80C323C4.pdf DS80C323
80C323C5.pdf DS80C323
80C323C6.pdf DS80C323
80C323C7.pdf DS80C323
High-Speed Microcontroller User's Guide DS87C530
Demonstrating Green Technology with Apples, Oranges, Lemons, and Limes DS80CH11
Interfacing 8051-based Microcontrollers to an SCI Port DS89C450
Micro Tutorial 1: Understanding DC Electrical Characteristics of Microcontrollers DS89C450
Replacing an Atmel TS80C51U2 with a DS80C320/323 Microcontroller DS80C323
8051 Microcontrollers: Frequently Asked Questions DS89C450
Using the High-Speed Micro's Watchdog Timer DS87C530
Using a EconOscillator™ to Clock an 8051 Microprocessor DS89C450
Using the High-Speed Micro's Serial Ports DS89C450
DS80C323.pdf DS80C323
高速微控制器用户指南 DS87C530
80C323C7.pdf DS80C323