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ATMEGA644P-20MU 其他数据使用手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
微控制器
封装:
VQFN-44
描述:
8 位 PicoPower megaAVR 系列微控制器此系列 megaAVR 微控制器具有 picoPower 技术 — 非常适合节能。 它们提供大量程序和数据内存，性能高达 20 MIPS。 **picoPower megaAVR 微控制器的特色和优点** 片上闪存 SRAM 内部 EEPROM SPI TWI (I²C) USART、USB、CAN 和 LIN 接口 监控计时器 精密振荡器 GPIO 引脚 ADC DAC 内置温度传感器 内部参考电压 掉电检测器
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ATMEGA644P-20MU数据手册
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若手册格式错乱，请下载阅览PDF原文件
AVR505: Migration between ATmega16/32 and
ATmega164P/324P/644P
Features
• General porting considerations
• Memories
• I/O Mapping and SRAM
• EEPROM Programming
• External 32 kHz Watch Crystal
• Changes To Register and Bit Names
• Fuse Settings
• Interrupt Vectors
• IEEE 1149.1 (JTAG) Boundary Scan
• Operational Range
1 Introduction
The ATmega164P and the ATmega324P are new and enhanced versions of the
ATmega16 and the ATmega32 respectively, and ATmega644P is a new 64kB
device with the same features. An important improvement is the possibility for low
voltage operation (1.8V) with ATmega164P/324P/644P and decreased power
consumption. ATmega164P/324P/644P also features an extra USART and can run
at frequencies up to 20 MHz.
This application note summarizes the differences between ATmega16/32 and
ATmega164P/324P/644P and is a guide to assist current ATmega16/32 users in
converting existing designs to the ATmega164P/324P/644P. Note that electrical
differences such as power consumption and I/O driving capabilities are not covered
in this document. Refer to the datasheets for detailed information on the devices.
Migration from ATmega644 is covered by AVR508: Migration from ATmega644 to
ATmega644P.
ATmega164P/324P/644P are pin compatible with ATmega163/323, and migration
between these devices is possible but not within the scope of this application note.
Refer to AVR083: Replacing ATmega163 by ATmega16 and AVR084: Replacing
ATmega323 by ATmega32 for further details.
8-bit
Microcontrollers
Application Note
Rev. 8001C-AVR-06/06
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