Maxim Integrated DS89C430-MNL+, 8bit 8051 Microcontroller, DS89C, 33MHz, 16 kB Flash, 40-Pin PDIP

High-Speed 8051 Architecture
One 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 Automatic Increment/Decrement and Toggle Select
Supports Four Paged Memory-Access Modes
On-Chip Memory
16kB/64kB Flash Memory
In-Application Programmable
In-System Programmable Through Serial Port
1kB SRAM for MOVX
80C52 Compatible
8051 Pin and Instruction Set Compatible
Four Bidirectional, 8-Bit I/O Ports
Three 16-Bit Timer Counters
256 Bytes Scratchpad RAM
Power-Management Mode
Programmable Clock Divider
Automatic Hardware and Software Exit
ROMSIZE Feature
Selects Internal Program Memory Size from 0 to 64kB
Allows Access to Entire External Memory Map
Dynamically Adjustable by Software
Peripheral Features
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
Electromagnetic Interference (EMI) Reduction
Applications
Automated Test Equipment (ATE)
Building Energy Control and Management
Building Security and Door Access Control
Consumer Electronics
Data Logging
Gaming Equipment
HVAC
Industrial Control and Automation
Magstripe Reader/Scanner
Motor Control
Programmable Logic Controllers
Telephones
Uninterruptible Power Supplies
Vending
White Goods (Washers, Microwaves, Etc.)