描述 Description

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. The architecture can provide a significant code size reduction when compiling C programs while fully preserving the legacy of C51 assembly routines.

特性 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 (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
? μWire and SPI Master and Slave Protocols
? Three 16-bit Timers/Counters (Timers 0, 1 and 2 of the Standard 80C51)
? EWC: Event and Waveform Controller
? Compatible with Intel’s Programmable Counter Array (PCA)
? Common 16-bit Timer/Counter Reference with Four Possible Clock Sources (Fosc/4, Fosc/12, Timer 1 and External Input)
? Five Modules, Each with Four Programmable Modes:
?? – 16-bit Software Timer/Counter
?? – 16-bit Timer/Counter Capture Input and Software Pulse Measurement
?? – High-speed Output and 16-bit Software Pulse Width Modulation (PWM)
?? – 8-bit Hardware PWM Without Overhead
? 16-bit Watchdog Timer/Counter Capability
? Secure 14-bit Hardware Watchdog Timer
? Power Management
? Power-On Reset (Integrated on the Chip)
? Power-Off Flag (Cold and Warm Resets)
? Software Programmable System Clock
? Idle Mode
? Power-down Mode
? Keyboard Interrupt Interface on Port 1
? Non Maskable Interrupt Input (NMI)
? Real-Time Wait States Inputs (WAIT#/AWAIT#)
? ONCE Mode and Full Speed Real-time In-circuit Emulation Support (Third Party Vendors)
? High Speed Versions:
?? – 4.5V to 5.5V
?? – 16 MHz and 24 MHz
? Typical Operating Current: 35 mA at 24 MHz
???????????????????????????????? 24 mA at 16 MHz
? Typical Power-down Current: 2 μA
? Low Voltage Version:
?? – 2.7V to 5.5V
?? – 16 MHz
? Typical Operating Current:11 mA at 3V
? Typical Power-down Current: 1 μA
? Temperature Ranges: Commercial (0°C to +70°C), Industrial (-40°C to +85°C), Automotive ((-40°C to +85°C) ROM only)
? Option: Extended Range (-55°C to +125°C)
? Packages: PDIL 40, PLCC 44 and VQFP 44
? Options: Known Good Dice and Ceramic Packages?