AVR 微处理器 ATmega103 / ATmega103L

ATmega103 / ATmega103L 特点

1. o Utilizes the AVR(R) RISC Architecture
   o AVR – High-performance and Low-power RISC Architecture
   – 121 Powerful Instructions – Most Single Clock Cycle Execution
   – 32 x 8 General-purpose Working Registers + Peripheral Control Registers
   – Up to 6 MIPS Throughput at 6 MHz
   o Data and Nonvolatile Program Memory
   – 128K Bytes of In-System Programmable Flash
   Endurance: 1,000 Write/Erase Cycles
   – 4K Bytes Internal SRAM
   – 4K Bytes of In-System Programmable EEPROM
   Endurance: 100,000 Write/Erase Cycles
   – Programming Lock for Flash Program and EEPROM Data Security
   – SPI Interface for In-System Programming
   o Peripheral Features
   – On-chip Analog Comparator
   – Programmable Watchdog Timer with On-chip Oscillator
   – Programmable Serial UART
   – Master/Slave SPI Serial Interface
   – Real-time Counter (RTC) with Separate Oscillator
   – Two 8-bit Timer/Counters with Separate Prescaler and PWM
   – Expanded 16-bit Timer/Counter System with Separate Prescaler, Compare,
   Capture Modes and Dual 8-, 9- or 10-bit PWM
   – Programmable Watchdog Timer with On-chip Oscillator
   – 8-channel, 10-bit ADC
   o Special Microcontroller Features
   – Low-power Idle, Power Save and Power-down Modes
   – Software Selectable Clock Frequency
   – External and Internal Interrupt Sources
   o Specifications
   – Low-power, High-speed CMOS Process Technology
   – Fully Static Operation
   o Power Consumption at 4 MHz, 3V, 25°C
   – Active: 5.5 mA
   – Idle Mode: 1.6 mA
   – Power-down Mode: < 1 μA
   o I/O and Packages
   – 32 Programmable I/O Lines, 8 Output Lines, 8 Input Lines
   – 64-lead TQFP
   o Operating Voltages
   – 2.7 - 3.6V (ATmega103L)
   – 4.0 - 5.5V (ATmega103)
   o Speed Grades
   – 0 - 4 MHz (ATmega103L)
   – 0 - 6 MHz (ATmega103)

ATmega103 / ATmega103L 描述

The ATmega103(L) is a low-power, CMOS, 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega103(L) achieves throughputs approaching 1 MIPS per MHz, allowing the system designer to optimize power consumption versus processing speed.

The AVR core is based on an enhanced RISC architecture that combines a rich instruction set with 32 general-purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers.

The ATmega103(L) provides the following features: 128K bytes of In-System Programmable Flash, 4K bytes EEPROM, 4K bytes SRAM, 32 general-purpose I/O lines, 8 input lines, 8 output lines, 32 general-purpose working registers, real-time counter (RTC), 4 flexible timer/counters with compare modes and PWM, UART, programmable watchdog timer with internal oscillator, an SPI serial port and 3 software-selectable power saving modes. The Idle mode stops the CPU while allowing the SRAM, timer/counters, SPI port and interrupt system to continue functioning. The Power-down mode saves the register contents but freezes the oscillator, disabling all other chip functions until the next interrupt or hardware reset. In Power Save mode, the timer oscillator continues to run, allowing the user to maintain a timer base while the rest of thedevice is sleeping.

The device is manufactured using Atmel’s high-density nonvolatile memory technology. The on-chip ISP Flash allows the program memory to be reprogrammed in-system through a serial interface or by a conventional nonvolatile memoryprogrammer. By combining an 8-bit RISC CPU with a large array of ISP Flash on a monolithic chip, the Atmel ATmega103(L) is a powerful microcontroller that provides a highly flexible and cost-effective solution to many embeddedcontrol applications.

The ATmega103(L) AVR is supported with a full suite of program and system development tools including: C compilers,macro assemblers, program debugger/simulators, in-circuit emulators and evaluation kits.

ATmega103 / ATmega103L 订购型号

工作速度 (MHz)	工作电压	定货号	封装	工作范围
4	2.7 - 3.6V	ATmega103L-4AC	64A	商业级 (0oC - 70oC)
		ATmega103L-4AI	64A	工业级(-40oC - 85oC)
6	4.0 - 5.5V	ATmega103-6AC	64A	商业级 (0oC - 70oC)
		ATmega103-6AI	64A	工业级(-40oC - 85oC)

ATmega103 / ATmega103L 应用技术支持与电子电路设计开发资源下载

1. ATmega103 / ATmega103L 英文数据手册下载.PDF
2. ATMEL 爱特梅尔半导体公司产品线. PDF (编号:Atmel Products)
3. Atmel 爱特梅尔AVR 微控制器简介.PDF (编号:Tech AVR 000)MLF 32
4. 面向新手的AVR开发工具,及基本知识.PDF(编号:Tech AVR 001)
5. 使用AVR 定时/计数器的PWM功能设计要点 .PDF