原标题：Microchip ATtiny1627 8位MCU解决方案

　　microchip公司的ATtiny1624/1626/1627 8位微控制器(MCU),是tinyAVR® 2系列产品,采用AVR® CPU,其硬件乘法器运行高达20MHz,集成了16KB闪存,2JB SRAM和256B EEPROM,可采用14引脚,20引脚和24引脚封装.该器件采用Microchip的最新技术,具有灵活的低功耗架构,包括事件系统和睡眠运行(SleepWalkin),先进的数字外设和精确的模拟特性如带可编程增益放大器(PGA)的12位差分ADC.工作电压1.8V到 5.5V.器件具有多种内部基准源如1.024V, 2.048V, 2.500V, 4.096V和VDD.工作温度-40C - 85C (标准),可扩展至-40C - 125C .主要用在高精度传感器如烟雾,PIR,热电偶,湿度计,压力和力量传感器, 嘈杂环境的传感器,实时控制系统如电源转换器和二次安全监视.用于有限模拟性能的更大MCU/MPU的模拟接口芯片.本文介绍了ATtiny1627主要特性,框图和评估板ATtiny1627 Curiosity Nano(好奇纳米)主要特性,引脚图,电路图和PCB装配图.

　　The ATtiny1624/1626/1627 microcontrollers of the tinyAVR® 2 family are using the AVR® CPU with hardware multiplier, running at up to 20 MHz, with 16 KB Flash, 2 KB of SRAM, and 256B of EEPROM available in a 14-, 20-, and 24-pin package. The family uses the latest technologies from Microchip with a flexible and low-power architecture, including Event System and SleepWalking, advanced digital peripherals, and accurate analog features such as a 12-bit differential ADC with Programmable Gain Amplifier (PGA).

　　ATtiny1627主要特性:

　　• High-Performance Low-Power AVR® CPU

　　– Running at up to 20 MHz

　　– Single-cycle I/O access

　　– Two-level interrupt controller with vectored interrupts

　　– Two-cycle hardware multiplier

　　– Supply voltage range: 1.8V to 5.5V

　　• Memories

　　– 16 KB In-System self-programmable Flash memory

　　– 2 KB SRAM

　　– 256B EEPROM

　　– 32B of user row in nonvolatile memory that can keep data during chip-erase and be programmed while the device is locked

　　– Write/erase endurance

　　• Flash 10,000 cycles

　　• EEPROM 100,000 cycles

　　– Data retention: 40 years at 55C

　　• System

　　– Power-on Reset (POR)

　　– Brown-out Detection (BOD)

　　– Clock options

　　• Lockable 20 MHz Low-Power internal oscillator

　　• 32.768 kHz Ultra Low-Power (ULP) internal oscillator

　　• 32.768 kHz external crystal oscillator

　　• External clock input

　　– Single-pin Unified Program and Debug Interface (UPDI)

　　– Three sleep modes

　　• Idle with all peripherals running and immediate wake-up time

　　• Standby

　　– Configurable operation of selected peripherals

　　– SleepWalking peripherals

　　• Power-Down with full data retention

　　• Peripherals

　　– One 16-bit Timer/Counter type A (TCA) with a dedicated period register and three PWM channels

　　– Two 16-bit Timer/Counter type B (TCB) with input capture and simple PWM functionality

　　– One 16-bit Real-Time Counter (RTC) running from external 32.768 kHz crystal or internal 32.768 kHz ULP oscillator

　　– Two Universal Synchronous Asynchronous Receiver Transmitter (USART) with fractional baud rate generator, auto-baud, and start-of-frame detection

　　– Master/Slave Serial Peripheral Interface (SPI)

　　– Master/Slave Two-Wire Interface (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 four programmable Look-Up Tables (LUT)

　　– One Analog Comparator (AC) with scalable reference input

　　– One 12-bit differential 375 ksps Analog-to-Digital Converter (ADC) with Programmable Gain Amplifier (PGA) and up to 15 input channels

　　– Multiple internal voltage references

　　• 1.024V

　　• 2.048V

　　• 2.500V

　　• 4.096V

　　• VDD

　　– Automated Cyclic Redundancy Check (CRC) flash memory scan

　　– Watchdog Timer (WDT) with Window Mode, with a separate on-chip oscillator

　　– External interrupt on all general purpose pins

　　• I/O and Packages

　　– Up to 22 programmable I/O pins

　　– 14-pin

　　• SOIC150

　　• TSSOP

　　– 20-pin

　　• SOIC300

　　• SSOP

　　• VQFN 3x3 mm

　　– 24-pin

　　• VQFN 4x4 mm

　　• Temperature Ranges

　　– -40C to 85C (standard)

　　– -40C to 125C (extended)

　　• Speed Grades (-40C to 85C)

　　– 0-5 MHz @ 1.8V – 5.5V

　　– 0-10 MHz @ 2.7V – 5.5V

　　– 0-20 MHz @ 4.5V – 5.5V

　　• Speed Grades (-40C to 125C)

　　– 0-8 MHz @ 2.7V - 5.5V

　　– 0-16 MHz @ 4.5V - 5.5V

　　ATtiny1627应用:

　　• High-accuracy sensors: smoke, PIR, thermocouple, moisture, light, pressure, and force

　　• Sensors in noisy environments benefiting from noise suppression capabilities

　　• Real-time control systems such as power converters and secondary safety monitoring

　　• Analog interface chip for larger MCU/MPUs with limited analog performance

　　图1. ATtiny1627框图

　　评估板ATtiny1627 Curiosity Nano(好奇纳米)

　　The ATtiny1627 Curiosity Nano Evaluation Kit is a hardware platform to evaluate microcontrollers in the tinyAVR® 2-series. This board has the ATtiny1627 microcontroller (MCU) mounted.

　　Supported by Atmel Studio and Microchip MPLAB® X Integrated Development Environments (IDEs), the board provides easy access to the features of the ATtiny1627 to explore how to integrate the device into a custom design.

　　The Curiosity Nano series of evaluation boards include an on-board debugger. No external tools are necessary to program and debug the ATtiny1627.

　　图2. 评估板ATtiny1627 Curiosity Nano外形图

　　图3. 评估板ATtiny1627 Curiosity Nano元件分布图

　　评估板ATtiny1627 Curiosity Nano主要特性:

　　• ATtiny1627 Microcontroller

　　• One Yellow User LED

　　• One Mechanical User Switch

　　• Footprint for 32.768 kHz Crystal

　　• On-Board Debugger:

　　– Board identification in Atmel Studio/Microchip MPLAB® X IDE

　　– One green power and status LED

　　– Programming and debugging

　　– Virtual serial port (CDC)

　　– Two debug GPIO channels (DGI GPIO)

　　• USB Powered

　　• Adjustable Target Voltage:

　　– MIC5353 LDO regulator controlled by the on-board debugger

　　– 1.8-5.1V output voltage (limited by USB input voltage)

　　– 500 mA maximum output current (limited by ambient temperature and output voltage)

　　图4. 评估板ATtiny1627 Curiosity Nano引脚图