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8 Bit MCU, DS8 Family DS87C5xx Series Microcontrollers, 33 MHz, 16 KB, 1 KB, 52 Pins, PLCC


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DS87C530-QCL+   Datasheet
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Product Overview

The DS87C530-QCL+ is an EPROM/ROM microcontroller with real-time clock in 52 pin PLCC package. It is an 8051 compatible microcontrollers based on the Dallas Semiconductor high speed core. It uses 4 clocks per instruction cycle instead of the 12 used by the standard 8051. It also provides a unique mix of peripherals not widely available on other processors. It has an on-chip RTC and battery backup support for an on-chip 1K x 8 SRAM. The new Power Management Mode (PMM) 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 ideal for instruments and portable applications. It includes two independent serial ports, two data pointers, on-chip power monitor with brownout detection and a watchdog timer. PMM allows software to select a slower CPU clock. While default operation uses four clocks per machine cycle, the PMM runs at 64 or 1024 clocks per cycle.
  • Supply voltage range is 4.5V to 5.5V
  • Operating temperature range from 0°C to 70°C
  • Four 8bit I/O ports and 256bytes scratchpad RAM
  • 16KB EPROM (OTP) and 1KB extra on-chip SRAM for MOVX
  • Selects effective on-chip ROM size from 0 to 16KB
  • Runs DC to 33MHz clock rates
  • Single-cycle instruction in 121ns
  • EMI reduction mode disables ALE
  • Two full duplex hardware serial ports
  • 14 total interrupt sources with six external


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Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.


The DS87C530 are monolithic device. A user must supply an external battery or super cap and 32.768KHz timekeeping crystal to have permanently powered timekeeping or non-volatile RAM.

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Technical Documents (1)

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CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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Available for back order

More stock available to supplier lead times which is approximately 9/25/23

Due to market conditions delivery times are for general guidance only and may be subject to change at short notice

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1+ Php3,248.90
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