DS87C530

EPROM微控制器,带有实时时钟


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说明

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.
DS83C530、DS87C530:原理框图 DS83C530、DS87C530:原理框图 放大+

关键特性

  • 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
Part NumberMCU CoreCore Clock Speed
(MHz)
Data ProcessingInternal SRAM
(KBytes)
USARTsTimer FeaturesPackage/PinsBudgetary
Price
maxSee Notes
DS87C530 8051 (CISC)338-bit12Watchdog
CQUAD/52
PLCC/52
PLCC/68
TQFP/52
$28.48 @1k
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Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

CAD Symbols and Footprints

  • DS87C530-QCL+
  • DS87C530-QNL+
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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