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AT80251G2D - 8/16-bit Microcontroller

General Description

The TSC80251G2D products are derivatives of the Atmel Microcontroller family based on the 8/16-bit C251 Architecture.

Key Features

  • Pin and Software Compatibility with Standard 80C51 Products and 80C51Fx/Rx/Rx+ Plug-In Replacement of Intel’s 8xC251Sx C251 Core: Intel’s MCS®251 D-step Compliance 40-byte Register File Registers Accessible as Bytes, Words or Dwor.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Features • • • • • • • • • • • • • • • • • • • • • • • • • • • Pin and Software Compatibility with Standard 80C51 Products and 80C51Fx/Rx/Rx+ Plug-In Replacement of Intel’s 8xC251Sx C251 Core: Intel’s MCS®251 D-step Compliance 40-byte Register File Registers Accessible as Bytes, Words or Dwords Three-stage Instruction Pipeline 16-bit Internal Code Fetch Enriched C51 Instruction Set 16-bit and 32-bit ALU Compare and Conditional Jump Instructions Expanded Set of Move Instructions Linear Addressing 1 Kbyte of On-Chip RAM External Memory Space (Code/Data) Programmable from 64 kilobytes to 256 kilobytes TSC87251G2D: 32 kilobytes of On-Chip EPROM/OTPROM – SINGLE PULSE Programming Algorithm TSC83251G2D: 32 kilobytes of On-Chip Masked ROM TSC80251G2D: ROMless Version Four 8-bit Parallel I/O Ports