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AT80C51RB2-3CSCM bảng dữ liệu(PDF) 1 Page - ATMEL Corporation |
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AT80C51RB2-3CSCM bảng dữ liệu(HTML) 1 Page - ATMEL Corporation |
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1 / 83 page  Rev. 4113B–8051–03/05 Features • 80C52 Compatible – Four 8-bit I/O Ports – Three 16-bit Timer/Counters – 256 Bytes Scratch Pad RAM – 8 Interrupt Sources with 4 Priority Levels – Dual Data Pointer • Variable Length MOVX for Slow RAM/Peripherals • High-speed Architecture – 10 to 40 MHz in Standard Mode • 16K/32K Bytes On-Chip ROM Program • T80C51RD2 ROMless Versions • On-Chip 1024 bytes Expanded RAM (XRAM) – Software Selectable Size (0, 256, 512, 768, 1024 bytes) – 256 Bytes Selected at Reset for AT87C51RB2/RC2 Compatibility • Keyboard Interrupt Interface on Port P1 • 8-bit Clock Prescaler • 64K Program and Data Memory Spaces • Improved X2 Mode with Independant Selection for CPU and Each Peripheral • Programmable Counter Array 5 Channels with: – High-speed Output – Compare/Capture – Pulse Width Modulator – Watchdog Timer Capabilities • Asynchronous Port Reset • Full Duplex Enhanced UART • Dedicated Baud Rate Generator for UART • Low EMI (Inhibit ALE) • Hardware Watchdog Timer (One-time Enabled with Reset-out) • Power Control Modes –Idle Mode – Power-down Mode – Power-off Flag • Power Supply: 2.7V to 5.5V or 2.7V to 3.6V • Temperature Ranges: Commercial (0 to +70 °C) and Industrial (-40°C to +85°C) • Packages: PDIL40, PLCC44, VQFP44 Description AT8xC51Rx2 microcontrollers are high performance ROM versions of the 80C51 8-bit microcontrollers. They contain a 0K, 16K or 32K bytes ROM memory block for program. The microcontrollers retain all features of the Atmel 80C52 with 256 bytes of internal RAM, a 7-source 4-level interrupt controller and three timer/counters. In addition, the microcontrollers have a Programmable Counter Array, an XRAM of 1024 byte, a Hardware Watchdog Timer, a Keyboard Interface, a more versatile serial channel that facilitates multiprocessor communication (EUART) and a speed improve- ment mechanism (X2 mode). The microcontrollers have 2 software-selectable modes of reduced activity and 8 bit clock prescaler for further reduction in power consumption. In Idle mode, the CPU is frozen while the peripherals and the interrupt system are still operating. In the Power- down mode, the RAM is saved and all other functions are inoperative. 80C51 High Performance ROM 8-bit Microcontroller AT80C51RD2 AT83C51RB2 AT83C51RC2 |
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