Atmel AT83251G2D
The TSC80251G2D products are derivatives of the Atmel Microcontroller family based on the 8/16-bit C251 Architecture. This family of products is tailored to 8/16-bit microcontroller applications requiring an increased instruction throughput, a reduced operating frequency or a larger addressable memory space.FEATURES
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● 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 (Ports 0, 1, 2 and 3 of the Standard 80C51) Serial I/O Port: Full Duplex UART (80C51 Compatible) With Independent Baud Rate Generator SSLC: Synchronous Serial Link Controller TWI Multi-master Protocol...