ATmega3208系列MCU物联网解决方案
microchip公司的atmega3208/3209/4808/4809是采用avr®处理器的megaavr® 0系列mcu，具有工作高达20mhz的硬件乘法器，以及高达48kb闪存储器，6kb sram和256b eeprom，采用最新的技术和灵活的低功率架构，包括事件系统和sleepwalking，精密模拟特性和先进的外设，采用28，32或48引脚封装，主要用在工业，医疗，家庭自动化和物联网（iot）应用。本文介绍了atmega3208/3209/4808/4809主要特性， 框图以及开发板avr-iot wg主要特性，电路图pcb设计图和材料清单。
the atmega3208/3209/4808/4809 microcontrollers of the megaavr® 0-series are using the avr®processor with hardware multiplier， running at up to 20 mhz， with a wide range of flash sizes up to 48 kb， up to 6 kb of sram， and 256 bytes of eeprom in 28-， 32-， or 48-pin package. the series uses the latest technologies from microchip with a flexible and low-power architecture including event system and sleepwalking， accurate analog features and advanced peripherals.
the devices described here offer flash sizes from 32 kb to 48 kb in a 32-pin package.
atmega3208/3209/4808/4809主要特性：
• avr® cpu
– single-cycle i/o access
– two-level interrupt controller
– two-cycle hardware multiplier
• memories
– up to 48 kb in-system self-programmable flash memory
– 256b eeprom
– up to 6 kb sram
– write/erase endurance：
• flash 10，000 cycles
• eeprom 100，000 cycles
– data retention： 20 years at 85°c
• system
– power-on reset （por） circuit
– brown-out detection （bod）
– clock options：
• 20 mhz low power internal oscillator with fuse-protected frequency setting
• 32.768 khz ultra low power （ulp） internal oscillator
• 32.768 khz external crystal oscillator
• external clock input
– single pin unified program debug interface （updi）
– three sleep modes：
• idle with all peripherals running and mode for immediate wake-up time
• standby
– configurable operation of selected peripherals
– sleepwalking peripherals
• power down with limited wake-up functionality
• peripherals
– one 16-bit timer/counter type a with dedicated period register， three compare channels （tca）
– three 16-bit timer/counter type b with input capture （tcb）
– one 16-bit real time counter （rtc） running from external crystal or internal rc oscillator
– three usart with fractional baud rate generator， autobaud， and start-of-frame detection
– master/slave serial peripheral interface （spi）
– dual mode master/slave twi with dual address match
• standard mode （sm， 100 khz）
• fast mode （fm， 400 khz）
• fast mode plus （fm+， 1 mhz）
– event system for cpu independent and predictable inter-peripheral signaling
– configurable custom logic （ccl） with up to four programmable lookup tables （lut）
– one analog comparator （ac） with scalable reference input
– one 10-bit 150 ksps analog to digital converter （adc）
– five selectable internal voltage references： 0.55v， 1.1v， 1.5v， 2.5v， and 4.3v
– crc code memory scan hardware
• optional automatic scan after reset
– watchdog timer （wdt） with window mode， with separate on-chip oscillator
– external interrupt on all general purpose pins
• i/o and packages：
– 27 programmable i/o lines
– 32-pin vqfn 5x5 and tqfp 7x7
• temperature range： -40°c to 125°c
• speed grades：
– 0-5 mhz @ 1.8v – 5.5v
– 0-10 mhz @ 2.7v – 5.5v
– 0-20 mhz @ 4.5v – 5.5v， -40°c to 105°c
图1. atmega3208/3209/4808/4809框图
开发板avr-iot wg
the avr-iot wg development board is a small and easily expandable demonstration and development platform for iot solutions， based on the avr® microcontroller architecture using wi-fi® technology. it was designed to demonstrate that the design of a typical iot application can be simplified by partitioning the problem into three blocks：
• smart - represented by the atmega4808 microcontroller
• secure - represented by the atecc608a secure element
• connected - represented by the winc1510 wi-fi controller module
the avr-iot wg development board features a usb interface chip nano embedded debugger （nedbg） that provides access to a serial port interface （serial to usb bridge）， a mass storage interface for easy ‘drag and drop’ programming， configuration and full access to the avr microcontroller updi interface for programming and debugging directly from microchip mplab® x ide and the atmel® studio 7.0 ide. the avr-iot wg development board comes preprogrammed and configured for demonstrating connectivity
to the google cloud iot core.
开发板avr-iot wg 主要特性：
• a light sensor
• a high-accuracy temperature sensor - mcp9808
additionally， a mikrobus™ connector is provided to expand the board capabilities with 450+ sensors and actuators offered by mikroelektronika （） via a growing portfolio of click boards™。
图2. 开发板avr-iot wg 外形图
图3. 开发板avr-iot wg 布局图
the avr-iot wg development board combines a powerful 8-bit atmega4808 mcu， an atecc608a cryptoauthentication™ secure element ic and the fully certified atwinc1510 wi-fi® network controller - which provides the most simple and effective way to connect your embedded application to google’s cloud iot core platform. the board also includes an on-board debugger， and requires no external hardware to program and debug the mcu.
图4. 开发板avr-iot wg 电路图（1）
图5. 开发板avr-iot wg 电路图（2）
图6. 开发板avr-iot wg 电路图（3）
图7. 开发板avr-iot wg pcb设计图（1）
图8. 开发板avr-iot wg pcb设计图（2）
图9. 开发板avr-iot wg pcb设计图（3）
图10. 开发板avr-iot wg pcb设计图（4）
图11. 开发板avr-iot wg pcb设计图（5）
图12. 开发板avr-iot wg pcb设计图（6）
图13. 开发板avr-iot wg pcb设计图（7）
图14. 开发板avr-iot wg pcb设计图（8）
图15. 开发板avr-iot wg pcb设计图（9）
图16. 开发板avr-iot wg pcb设计图（10）
图17. 开发板avr-iot wg pcb设计图（11）
开发板avr-iot wg材料清单：
树莓派和n1性能对比
鸿蒙上实现“数字华容道”小游戏
未来区块链将在更多领域得到应用
为什么要检测泄露电流_泄露电流的检测方法
云存储服务技术架构及云存储服务的优势
ATmega3208系列MCU物联网解决方案
如何用废旧电器改造德生BCL2000收音机
图解锂电隔膜
西门子博途编译步骤说明
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无人机如何探索犯罪现场
动力电池包耐碎石冲击试验机
请查收！华为CCF HPC China 2023 参会指南
有哪些设计感满满的轻薄笔记本值得买？
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三年后剥离晶圆代工业务 英特尔的深化转型之路
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国轩集团投资115亿元锂电新能源产业项目正式落户
黑鲨手机详细拆解，性能全解
the atmega3208/3209/4808/4809 microcontrollers of the megaavr® 0-series are using the avr®processor with hardware multiplier， running at up to 20 mhz， with a wide range of flash sizes up to 48 kb， up to 6 kb of sram， and 256 bytes of eeprom in 28-， 32-， or 48-pin package. the series uses the latest technologies from microchip with a flexible and low-power architecture including event system and sleepwalking， accurate analog features and advanced peripherals.
the devices described here offer flash sizes from 32 kb to 48 kb in a 32-pin package.
atmega3208/3209/4808/4809主要特性：
• avr® cpu
– single-cycle i/o access
– two-level interrupt controller
– two-cycle hardware multiplier
• memories
– up to 48 kb in-system self-programmable flash memory
– 256b eeprom
– up to 6 kb sram
– write/erase endurance：
• flash 10，000 cycles
• eeprom 100，000 cycles
– data retention： 20 years at 85°c
• system
– power-on reset （por） circuit
– brown-out detection （bod）
– clock options：
• 20 mhz low power internal oscillator with fuse-protected frequency setting
• 32.768 khz ultra low power （ulp） internal oscillator
• 32.768 khz external crystal oscillator
• external clock input
– single pin unified program debug interface （updi）
– three sleep modes：
• idle with all peripherals running and mode for immediate wake-up time
• standby
– configurable operation of selected peripherals
– sleepwalking peripherals
• power down with limited wake-up functionality
• peripherals
– one 16-bit timer/counter type a with dedicated period register， three compare channels （tca）
– three 16-bit timer/counter type b with input capture （tcb）
– one 16-bit real time counter （rtc） running from external crystal or internal rc oscillator
– three usart with fractional baud rate generator， autobaud， and start-of-frame detection
– master/slave serial peripheral interface （spi）
– dual mode master/slave twi with dual address match
• standard mode （sm， 100 khz）
• fast mode （fm， 400 khz）
• fast mode plus （fm+， 1 mhz）
– event system for cpu independent and predictable inter-peripheral signaling
– configurable custom logic （ccl） with up to four programmable lookup tables （lut）
– one analog comparator （ac） with scalable reference input
– one 10-bit 150 ksps analog to digital converter （adc）
– five selectable internal voltage references： 0.55v， 1.1v， 1.5v， 2.5v， and 4.3v
– crc code memory scan hardware
• optional automatic scan after reset
– watchdog timer （wdt） with window mode， with separate on-chip oscillator
– external interrupt on all general purpose pins
• i/o and packages：
– 27 programmable i/o lines
– 32-pin vqfn 5x5 and tqfp 7x7
• temperature range： -40°c to 125°c
• speed grades：
– 0-5 mhz @ 1.8v – 5.5v
– 0-10 mhz @ 2.7v – 5.5v
– 0-20 mhz @ 4.5v – 5.5v， -40°c to 105°c
图1. atmega3208/3209/4808/4809框图
开发板avr-iot wg
the avr-iot wg development board is a small and easily expandable demonstration and development platform for iot solutions， based on the avr® microcontroller architecture using wi-fi® technology. it was designed to demonstrate that the design of a typical iot application can be simplified by partitioning the problem into three blocks：
• smart - represented by the atmega4808 microcontroller
• secure - represented by the atecc608a secure element
• connected - represented by the winc1510 wi-fi controller module
the avr-iot wg development board features a usb interface chip nano embedded debugger （nedbg） that provides access to a serial port interface （serial to usb bridge）， a mass storage interface for easy ‘drag and drop’ programming， configuration and full access to the avr microcontroller updi interface for programming and debugging directly from microchip mplab® x ide and the atmel® studio 7.0 ide. the avr-iot wg development board comes preprogrammed and configured for demonstrating connectivity
to the google cloud iot core.
开发板avr-iot wg 主要特性：
• a light sensor
• a high-accuracy temperature sensor - mcp9808
additionally， a mikrobus™ connector is provided to expand the board capabilities with 450+ sensors and actuators offered by mikroelektronika （） via a growing portfolio of click boards™。
图2. 开发板avr-iot wg 外形图
图3. 开发板avr-iot wg 布局图
the avr-iot wg development board combines a powerful 8-bit atmega4808 mcu， an atecc608a cryptoauthentication™ secure element ic and the fully certified atwinc1510 wi-fi® network controller - which provides the most simple and effective way to connect your embedded application to google’s cloud iot core platform. the board also includes an on-board debugger， and requires no external hardware to program and debug the mcu.
图4. 开发板avr-iot wg 电路图（1）
图5. 开发板avr-iot wg 电路图（2）
图6. 开发板avr-iot wg 电路图（3）
图7. 开发板avr-iot wg pcb设计图（1）
图8. 开发板avr-iot wg pcb设计图（2）
图9. 开发板avr-iot wg pcb设计图（3）
图10. 开发板avr-iot wg pcb设计图（4）
图11. 开发板avr-iot wg pcb设计图（5）
图12. 开发板avr-iot wg pcb设计图（6）
图13. 开发板avr-iot wg pcb设计图（7）
图14. 开发板avr-iot wg pcb设计图（8）
图15. 开发板avr-iot wg pcb设计图（9）
图16. 开发板avr-iot wg pcb设计图（10）
图17. 开发板avr-iot wg pcb设计图（11）
开发板avr-iot wg材料清单：
树莓派和n1性能对比
鸿蒙上实现“数字华容道”小游戏
未来区块链将在更多领域得到应用
为什么要检测泄露电流_泄露电流的检测方法
云存储服务技术架构及云存储服务的优势
ATmega3208系列MCU物联网解决方案
如何用废旧电器改造德生BCL2000收音机
图解锂电隔膜
西门子博途编译步骤说明
南京抽查护眼灯产品：合格率93.3%
无人机如何探索犯罪现场
动力电池包耐碎石冲击试验机
请查收！华为CCF HPC China 2023 参会指南
有哪些设计感满满的轻薄笔记本值得买？
LTC4252B-1 –48V/2.5A 热插拔控制器
三年后剥离晶圆代工业务 英特尔的深化转型之路
IDC：预计2022年亚太区块链解决方案支出达到2.4亿美元
基于西门子S7-200CPU在累积器中应用及注意事项
国轩集团投资115亿元锂电新能源产业项目正式落户
黑鲨手机详细拆解，性能全解