DS89C420ECL Dallas Semiconductor, DS89C420ECL Datasheet

DS89C420ECL

Manufacturer Part Number

DS89C420ECL

Description

QFP48

Manufacturer

Dallas Semiconductor

Datasheet

1.DS89C420ECL.pdf (59 pages)

Specifications of DS89C420ECL

Date_code

06+

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Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.

GENERAL DESCRIPTION

The DS89C420 offers the highest performance

available in 8051-compatible microcontrollers. It

features a redesigned processor core that executes

every 8051 instruction (depending on the instruction

type) up to 12 times faster than the original for the

same crystal speed. Typical applications see a speed

improvement of 10 times using the same code and

crystal. The DS89C420 offers a maximum crystal

speed of 33MHz, achieving execution rates up to 33

million instructions per second (MIPS).

APPLICATIONS

Data Logging

Vending

Automotive Test Equipment

Motor Control

Magstripe Reader/Scanner

Consumer Electronics

Gaming Equipment

Appliances (Washers, Microwaves, etc.)

Telephones

HVAC

Building Security and Door Access Control

Building Energy Control and Management

Uninterruptible Power Supplies

Programmable Logic Controllers

Industrial Control and Automation

ORDERING INFORMATION

Ordering information continued at end of data sheet.

DS89C420-

MCL

DS89C420-

QCL

DS89C420-

ECL

PART

TEMP RANGE

0°C to +70°C

CLOCK

SPEED

(MHz)

MAX.

40 PDIP

44 PLCC

44 TQFP

PIN-PACKAGE

1 of 59

Ultra-High-Speed Microcontroller

FEATURES

§ 80C52 Compatible

§ On-Chip Memory

§ ROMSIZE Feature

See page 2 for a complete list of features.

PIN CONFIGURATIONS

Pin Configurations continued at end of data sheet.

TOP VIEW

- 8051 Pin and Instruction-Set Compatible

- Four Bidirectional I/O Ports

- Three 16-Bit Timer Counters

- 256 Bytes Scratchpad RAM

- 16kB Flash Memory

- In-System Programmable through Serial Port

- 1kB SRAM for MOVX

- Selects Internal Program Memory Size from

- Allows Access to Entire External Memory

- Dynamically Adjustable By Software

0 to 16k

Map

P1.2/RXD1

P1.3/TXD1

P3.0/RXD0

P3.1/TXD0

P1.1/T2EX

P1.4/INT2

P1.5/INT3

P1.6/INT4

P1.7/INT5

P3.2/INT0

P3.3/INT1

P3.6/WR

P3.7/RD

P1.0/T2

P3.4/T0

P3.5/T1

XTAL2

XTAL1

RST

VSS

DS89C420

DIP

DS89C420

P0.0

P0.1

P0.2

P0.3

P0.4

P0.5

P0.6

P0.7

EA/VPP

PSEN

P2.7

P2.6

P2.5

P2.4

P2.3

P2.2

P2.1

P2.0

VCC

ALE/PROG

103102

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