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DS87C520-WNL, DS87C530, DS87C530-080AA

Table of contents:
Info of DS87C520-WNL
Info of DS87C530
Info of DS87C530-080AA

DS87C520-WNL, DS87C530, DS87C530-080AA Selling Leads, Datasheet

MFG:109 Package Cooled:PLCC D/C:

DS87C520-WNL, DS87C530, DS87C530-080AA Picture

DS87C520-WNL, DS87C530, DS87C530-080AA Datasheet download

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Part Number: DS87C520-WNL

MFG: 109

Package Cooled: PLCC

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DS87C530 General Description

The DS87C530/DS83C530 EPROM/ROM microcontrollers with a real-time clock (RTC) are 8051-compatible microcontrollers based on the Dallas Semiconductor high-speed core. They use 4 clocks per instruction cycle instead of the 12 used by the standard 8051. They also provide a unique mix of peripherals not widely available on other processors. They include an on-chip RTC and battery backup support for an on-chip 1k x 8 SRAM. The new Power Management Mode allows software to select reduced power operation while still processing.

A combination of high-performance microcontroller core, RTC, battery-backed SRAM, and power management makes the DS87C530/DS83C530 ideal for instruments and portable applications. They also provide several peripherals found on other Dallas high-speed microcontrollers. These include two independent serial ports, two data pointers, on-chip power monitor with brownout detection and a watchdog timer.

Power Management Mode (PMM) allows software to select a slower CPU clock. While default operation uses four clocks per machine cycle, the PMM runs the processor at 64 or 1024 clocks per cycle. There is a corresponding drop in power consumption when the processor slows.

The EMI reduction feature allows software to select a reduced emission mode. This disables the ALE signal when it is unneeded.

The DS83C530 is a factory mask ROM version of the DS87C530 designed for high-volume, costsensitive applications. It is identical in all respects to the DS87C530, except that the 16kB of EPROM is replaced by a user-supplied application program. All references to features of the DS87C530 will apply to the DS83C530, with the exception of EPROM-specific features where noted. Please contact your local Dallas Semiconductor sales representative for ordering information.

Note: The DS87C530/DS83C530 are monolithic devices. A user must supply an external battery or super cap and a 32.768kHz timekeeping crystal to have permanently powered timekeeping or nonvolatile RAM.The DS87C530/DS83C530 provide all the support and switching circuitry needed to manage these resources.

DS87C530 Maximum Ratings

Voltage Range on Any Pin Relative to Ground ..-0.3V to (V_CC + 0.5V)
Voltage Range on V_CC Relative to Ground........-0.3V to +6.0V
Operating Temperature Range...............0 to +70
Storage Temperature Range .........-55 to +125 (Note 1)
Soldering Temperature .....See IPD/JEDEC J-STD-020 Specification
This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.

DS87C530 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

DS87C530 Connection Diagram

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