DS83C530-DS87C530| Datasheet

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DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock
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FEATURES
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

PIN CONFIGURATIONS
TOP VIEW 7 8 1 47 46

DALLAS DS87C530 DS83C530
20 21 33 34

PLCC, WINDOWED CLCC

DALLAS DS87C530 DS83C530
52 14

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.

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: 071107