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012401

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,

FEATURES

§ 80C32-compatible

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8051 pin- and instruction set-compatible

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Full duplex serial port

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Three 16-bit timer/counters

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256 bytes scratchpad RAM

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Multiplexed address/data bus

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Addresses 64 kB ROM and 64 kB RAM

§ High-Speed Architecture

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4 clocks/machine cycle (8051 = 12)

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Runs DC to 33 MHz clock rates

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Single-cycle instruction in 121 ns

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Dual data pointer

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Optional variable length MOVX to access

fast/slow RAM /peripherals

§ 10 total interrupt sources with 6 external

§ Internal power-on reset circuit

§ Upwardly compatible with the DS80C320

§ Available in 40-pin PDIP, 44-pin PLCC, and

44-pin TQFP

PACKAGE OUTLINE

DESCRIPTION

The DS80C310 is a fast 80C31/80C32-compatible microcontroller. It features a redesigned processor

core without wasted clock and memory cycles. As a result, it executes every 8051 instruction between 1.5

and 3 times faster than the original architecture for the same crystal speed. Typical applications will see a

speed improvement of 2.5 times using the same code and the same crystal. The DS80C310 offers a

DS80C310

High-Speed Micro

www.maxim-ic.com

PRELIMINARY