DS89C420 Datasheet | Dallas Semiconducotr

- Ultra-High-Speed Microcontroller .maxim-ic. GENERAL DESCRIPTION The DS89C420 offers the highest performance available in 8051-patible 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 patible - 8051 Pin and Instruction-Set patible - Four Bidirectional I/O Ports - Three 16-Bit Timer Counters - 256 Bytes Scratchpad RAM - On-Chip Memory - 16k B Flash Memory - In-System Programmable through Serial Port - 1k B 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 See page 2 for a plete list of Features . 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 PIN CONFIGURATIONS TOP VIEW P1.0/T2 P1.1/T2EX P1.2/RXD1 P1.3/TXD1 P1.4/INT2 P1.5/INT3 P1.6/INT4 P1.7/INT5 RST P3.0/RXD0 P3.1/TXD0 P3.2/INT0 P3.3/INT1 P3.4/T0 P3.5/T1 P3.6/WR P3.7/RD XTAL2 XTAL1 VSS 1 2 3 4 5 6 7 8 9 10 DS89C420 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 VCC P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 EA/VPP ALE/PROG PSEN P2.7 P2.6 P2.5 P2.4 P2.3 P2.2 P2.1 P2.0 ORDERING INFORMATION MAX. PART TEMP RANGE CLOCK SPEED (MHz) DS89C420MCL DS89C420QCL DS89C420ECL 0°C to +70°C 0°C to +70°C 0°C to +70°C 33 33 33 40 PDIP 44 PLCC 44 TQFP...