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DS89C420-ECS

DS89C420-ECS

DS89C420-ECS

Maxim Integrated

16KB 16K x 8 FLASH 8051 8-Bit Microcontroller 89C Series DS89C420 50MHz 44-TQFP

SOT-23

DS89C420-ECS Datasheet PDF

non-compliant

Technical Specifications

Parameter NameValue
TypeParameter
Mounting Type Surface Mount
Package / Case 44-TQFP
Supplier Device Package 44-TQFP (10x10)
Operating Temperature0°C~70°C TA
PackagingTray
Series 89C
Published 2003
Part StatusObsolete
Moisture Sensitivity Level (MSL) 3 (168 Hours)
Max Operating Temperature70°C
Min Operating Temperature 0°C
Frequency 50MHz
Base Part Number DS89C420
Interface EBI/EMI, UART, USART
Memory Size16kB
Oscillator TypeExternal
Number of I/O 32
Speed 50MHz
RAM Size 1K x 8
Memory TypeFLASH
Voltage - Supply (Vcc/Vdd) 4.5V~5.5V
Core Processor 8051
Peripherals Power-Fail Reset, WDT
Program Memory TypeFLASH
Core Size 8-Bit
Program Memory Size 16KB 16K x 8
Connectivity EBI/EMI, SIO, UART/USART
Access Time 50 μs
Core Architecture 8051
RoHS StatusNon-RoHS Compliant
Lead Free Contains Lead
In-Stock:2098 items

DS89C420-ECS Product Details

DS89C420-ECS Overview


The package has a 44-TQFP shape. With 32 I/Os, it's pretty good. The Microcontroller's mounting type is Surface Mount and this IC chip has the following features. As the name implies, this Microcontroller is based on the 8-Bit core. As far as its program memory type is concerned, it is FLASH. Temperatures within 0°C~70°C TA range are measured by this Microcontroller. The 89C series is comprised of this electrical component. The electronic part has a program memory size of 16KB 16K x 8. There's a 8051 Core Processor inside. Its memory size is 16kB. It is possible to find alternatives to the base part number DS89C420 by using the part number search tool. An effective performance can be achieved at a frequency of 50MHz. The equipment on this page features FLASH memory technology. This device features a 8051 core architecture.

DS89C420-ECS Features


44-TQFP package
Mounting type of Surface Mount
Minimum temperature of 0°C


DS89C420-ECS Applications


There are a lot of Maxim Integrated
DS89C420-ECS Microcontroller applications.


  • Robots
  • Radio
  • Television
  • Heater/Fan
  • Calculator
  • Kindle
  • Christmas lights
  • 3D printers
  • Washing machine
  • Microwave ovens

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