Mfr Part #:

DS89C420-QCL

The Dallas Semiconductor DS89C420-QCL is an ultra-high-speed microcontroller compatible with the 80C52 architecture. It offers 16kB of flash memory and operates at speeds up to 33MHz.

✓ Total Stock: 4 pcs

$ Price Range: $6.43

DS89C420-QCL Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Bristol Electronics ✓ Non-Authorised Inventory information	4 pcs On Request	4 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

DS89C420-QCL Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Dallas Semiconductor
Industrial Grade	Yes
Lead Spacing	0.8 mm
Lead Style	Gull Wing
SVHC Present	Not Present
Storage Temperature	-55°C ~ 150°C
Watchdog Timer	Programmable

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DS89C420-QCL Description

Short technical summary and product information.

The DS89C420-QCL from Dallas Semiconductor is a high-performance, 8051-compatible microcontroller designed for demanding applications. It features an 80C52 pin and instruction-set compatible core, enabling seamless integration into existing designs.

This microcontroller boasts 16kB of in-system programmable flash memory and 1kB of SRAM for MOVX operations. It operates at clock speeds from DC up to 33MHz, achieving execution rates of up to 33 million instructions per second. The DS89C420-QCL includes standard 8051 resources such as three timer/counters, four 8-bit I/O ports, and a serial port, along with enhancements like a second full-duplex serial port, dual data pointers, and programmable watchdog timer.

Available in 44-pin TQFP, 44-pin PLCC, and 40-pin DIP packages, the DS89C420-QCL offers flexibility for various board designs. Its power management features include a programmable clock divider and automatic hardware/software exit.

Key electrical characteristics include 13 interrupt sources, five interrupt priority levels, and power-fail reset capabilities. The device is suitable for applications requiring high processing speeds and robust control features.

DS89C420-QCL Quick Information

Product Type: Microcontroller

Series: DS89C420

Canonical Name: DS89C420-QCL Ultra-High-Speed Microcontroller

Subcategory: Embedded Microcontroller

DS89C420-QCL Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

DS89C420-QCL Estimated Pricing

Qty	Low	High
1+	$6.43	$6.43

Estimated market price range - modelled values for guidance only, not live distributor offers.

DS89C420-QCL Features

80C52 compatible microcontroller
16kB in-system programmable flash memory
DC to 33MHz operation
Up to 33 million instructions per second
Available in TQFP, PLCC, and DIP packages

DS89C420-QCL Applications

High-speed embedded control and automation.
Communication systems with dual serial ports.
Real-time industrial control applications.
Data acquisition and processing systems.
Multi-tasking systems with dense interrupt handling.

DS89C420-QCL FAQs

7 frequently asked questions generated from this part’s specifications.

What package options are available for the DS89C420-QCL?

The DS89C420-QCL is offered in 44-pin TQFP, 44-pin PLCC, and 40-pin DIP packages.

What is the maximum clock speed of the DS89C420-QCL?

The DS89C420-QCL operates from DC to 33 MHz.

How much flash memory does the DS89C420-QCL have?

It has 16 kB of on-chip flash memory.

What is the on-chip RAM capacity of the DS89C420-QCL?

It includes 256 bytes of scratchpad RAM and an additional 1 kB SRAM for MOVX operations.

How many serial ports does the DS89C420-QCL have?

It has two full-duplex serial ports.

How many interrupt sources are available?

The DS89C420-QCL provides 13 interrupt sources, six of which are external, with five levels of priority.

Is the DS89C420-QCL 8051 instruction-set compatible?

Yes, it is 8051 pin and instruction-set compatible.