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DS89C420-ENL

Description
Ultra-High-Speed Microcontroller
File Size609KB,47 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Compare View All

DS89C420-ENL Overview

Ultra-High-Speed Microcontroller

-
DS89C420
Ultra-High-Speed Microcontroller
www.maxim-ic.com
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).
FEATURES
§
80C52 Compatible
8051 Pin- and Instruction-Set Compatible
Four Bidirectional I/O Ports
Three 16-Bit Timer Counters
256 Bytes Scratchpad RAM
On-Chip Memory
16kB Flash Memory
In-System Programmable through Serial Port
1kB SRAM for MOVX
ROMSIZE Feature
Selects Internal Program Memory Size from
0 to 16k
Allows Access to Entire External Memory Map
Dynamically Adjustable by Software
High-Speed Architecture
1 Clock-Per-Machine Cycle
DC to 33MHz Operation
Single-Cycle Instruction in 30ns
Optional Variable Length MOVX to Access
Fast/Slow Peripherals
Dual Data Pointers with Auto
Increment/Decrement and Toggle Select
Supports Four Paged Modes
§
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
§
§
§
Power Management Mode
Programmable Clock Divider
Automatic Hardware and Software Exit
§
§
PIN-
PACKAGE
40 PDIP
44 PLCC
44 TQFP
40 PDIP
44 PLCC
44 TQFP
40 PDIP
44 PLCC
44 TQFP
ORDERING INFORMATION
PART
DS89C420-MNG
DS89C420-QNG
DS89C420-ENG
DS89C420-MCL
DS89C420-QCL
DS89C420-ECL
DS89C420-MNL
DS89C420-QNL
DS89C420-ENL
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
MAX
CLOCK
SPEED
(MHz)
25
25
25
33
33
33
33
33
33
Two Full-Duplex Serial Ports
Programmable Watchdog Timer
13 Interrupt Sources (Six External)
Five Levels of Interrupt Priority
Power-Fail Reset
Early Warning Power-Fail Interrupt
§
§
§
§
Pin Configurations appear at end of data sheet.
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.
1 of 47
REV: 102203

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