DS87C530

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EPROM Microcontrollers with Real-Time Clock

Part Models
2
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Part Details

  • 80C52 Compatible
    • 8051 Instruction-Set Compatible
    • Four 8-Bit I/O Ports
    • Three 16-Bit Timer/Counters
    • 256 Bytes Scratchpad RAM
  • Large On-Chip Memory
    • 16kB EPROM (OTP)
    • 1kB Extra On-Chip SRAM for MOVX
  • ROMSIZE Features
    • Selects Effective On-Chip ROM Size from 0 to 16kB
    • Allows Access to Entire External Memory Map
    • Dynamically Adjustable by Software
    • Useful as Boot Block for External Flash
  • Nonvolatile Functions
    • On-Chip Real-Time Clock with Alarm Interrupt
    • Battery Backup Support of 1kB SRAM
  • High-Speed Architecture
    • 4 Clocks/Machine Cycle (8051 = 12)
    • Runs DC to 33MHz Clock Rates
    • Single-Cycle Instruction in 121ns
    • Dual Data Pointer
    • Optional Variable Length MOVX to Access Fast/Slow RAM /Peripherals
  • Power Management Mode
    • Programmable Clock Source Saves Power
    • Runs from (crystal/64) or (crystal/1024)
    • Provides Automatic Hardware and Software Exit
  • EMI Reduction Mode Disables ALE
  • Two Full-Duplex Hardware Serial Ports
  • High Integration Controller Includes:
    • Power-Fail Reset
    • Early-Warning Power-Fail Interrupt
    • Programmable Watchdog Timer
  • 14 Total Interrupt Sources with Six External
DS87C530
EPROM Microcontrollers with Real-Time Clock
DS83C530, DS87C530: Block Diagram
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Application Note 3

Design Note 3

Technical Articles 9

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