Microchip Technology Atmel ATmega328 8位元AVR® MCU

Atmel ATmega328 8位元AVR®微控制器是基於RISC的高性能設備，結合了32KB ISP閃存記憶與同時讀寫功能、1KB EEPROM、2KB SRAM、23條通用I/O電纜、32個工作寄存器、串行可編程USART等。Atmel ATmega328微控制器可在一個時鐘週期內執行功能強大的指令，使設備能夠實現接近1 MIPS每MHz的吞吐量，同時平衡功耗與處理速度。根據設計，Atmel微控制器可用於工業自動化與家庭及建築自動化。

特點

High performance, low power AVR® 8-Bit Microcontroller family
Advanced RISC architecture
- 131 powerful instructions – most single clock cycle execution
- 32 x 8 general-purpose working registers
- Fully static operation
- Up to 20 MIPS throughput at 20MHz
- On-chip 2-cycle multiplier
High endurance non-volatile memory segments
- 4/8/16/32KBytes of in-system self-programmable Flash program memory
- 256/512/512/1KBytes EEPROM
- 512/1K/1K/2KBytes internal SRAM
- Write/erase cycles 10,000 Flash/100,000 EEPROM
- Data retention 20 years at 85°C/100 years at 25°C(1)
- Optional boot code section with independent lock bits
In-system programming by an on-chip boot program
True read-while-write operation
- Programming lock for software security
QTouch® library support
- Capacitive touch buttons, sliders, and wheels
- QTouch and QMatrix™ acquisition
- Up to 64 sense channels
Peripheral features
- Two 8-bit timer/counters with separate prescaler and compare mode
- One 16-bit timer/counter with separate prescaler, compare mode, and capture mode
Real-time counter with separate oscillator
- Six PWM channels
- 8-channel 10-bit ADC in TQFP and VQFN package
Temperature measurement
- 6-channel 10-bit ADC in SPDIP package

Temperature measurement
- Programmable serial USART
- Master/slave SPI serial interface
- Byte-oriented 2-wire serial interface (Philips I²C compatible)
- Programmable watchdog timer with separate on-chip oscillator
- On-chip analog comparator
- Interrupt and wake up on Pin change
Special microcontroller features
- Power-on reset and programmable brown-out detection
- Internal calibrated oscillator
- External and internal interrupt sources
- Six sleep modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby
I/O and packages
- 23 programmable I/O lines
- 28-pin SPDIP, 32-lead TQFP, 28-pad VQFN, and 32-pad VQFN
Operating voltage
- 1.8 - 5.5V
Temperature range
- -40°C to 85°C
Speed grade
- 0-4MHz at 1.8-5.5V, 0-10MHz at 2.7-5.5.V, 0-20MHz at 4.5-5.5V
Power consumption at 1MHz, 1.8V, 25°C
- Active mode 0.2mA
- Power-down mode 0.1µA
Power-save mode 0.75µA (including 32kHz RTC)