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ATmega325P 带有32K系统内可编程Flash存储器

Flash (Kbytes)	32
EEPROM (Kbytes)	1
SRAM (Bytes)	2048
Max I/O Pins	54
F.max (MHz)	20
Vcc (V)	1.8-5.5
16-bit Timers	1
8-bit Timer	2
PWM (channels)	4
RTC	Yes
SPI	1+USI
UART	1
TWI	USI
ISP	Yes
10-bit A/D (Channe)	8
Analog Comparator	Yes
Brown Out Detector	Yes
Watchdog	Yes
On Chip Oscillator	Yes
Hardware Multiplie	Yes
Interrupts	23
Ext Interrupts	17
Self Program Memor	Yes
Pb-Free Packages	TQFP 64 MLF 64

32-Kbyte self-programming Flash Program Memory, 2-Kbyte SRAM, 1-KByte EEPROM, 8 Channel 10-bit A/D-converter. JTAG interface for on-chip-debug. Up to 20 MIPS throughput at 20 MHz. 1.8 - 5.5 Volt Operation.

• 32KB 系统内可编程Flash存储器：ATmega325P
• 32KB 系统内可编程Flash存储器：ATmega3250P

The ATmega325P/3250P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega325P/3250P achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

ATmega325P 特性

• High Performance, Low Power AVR® 8-Bit Microcontroller
• Advanced RISC Architecture
  – 130 Powerful Instructions – Most Single Clock Cycle Execution
  – 32 x 8 General Purpose Working Registers
  – Fully Static Operation
  – Up to 20 MIPS Throughput at 20 MHz
  – On-Chip 2-cycle Multiplier
• High Endurance Non-volatile Memory segments
  – 32K Bytes of In-System Self-programmable Flash program memory
  – 1K Bytes EEPROM
  – 2K Bytes Internal SRAM
  – Write/Erase cyles: 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 On-chip Boot Program
  True Read-While-Write Operation
  – Programming Lock for Software Security JTAG (IEEE std. 1149.1 compliant) Interface
  – Boundary-scan Capabilities According to the JTAG Standard
  – Extensive On-chip Debug Support
  – Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
• 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
  – Four PWM Channels
  – 8-channel, 10-bit ADC
  – Programmable Serial USART
  – Master/Slave SPI Serial Interface
  – Universal Serial Interface with Start Condition Detector
  – 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
  – Five Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, and
  Standby
• I/O and Packages
  – 54/69 Programmable I/O Lines
  – 64-lead TQFP, 64-pad QFN/MLF, and 100-lead TQFP
• Speed Grade:
  – ATmega325PV/ATmega3250PV:
  0 - 4 MHz @ 1.8 - 5.5V, 0 - 10 MHz @ 2.7 - 5.5V
  – ATmega325P/3250P:
  0 - 10 MHz @ 2.7 - 5.5V, 0 - 20 MHz @ 4.5 - 5.5V
• Temperature range: -40°C to 85°C Industrial
• Ultra-Low Power Consumption
  – Active Mode:420 μA at 1 MHz, 1.8V
  – Power-down Mode:40 nA at 1.8V
  – Power-save Mode:750 nA at 1.8V

ATmega325P 订购型号

Speed (MHz)	Power Supply	Ordering Code	Package	Operation Range
10	1.8 - 5.5V	ATmega325PV-10AU ATmega325PV-10MU	64A 64M1	Industrial (-40°C to 85°C)
20	2.7 - 5.5V	ATmega325P-20AU ATmega325P-20MU	64A 64M1	Industrial (-40°C to 85°C)

ATmega325P 应用技术支持与电子电路设计开发资源下载

1. ATMEL 爱特梅尔AVR 微控制器ATmega325P 数据手册DataSheet 下载. PDF
2. Atmel 爱特梅尔AVR 微控制器简介.PDF (编号:Tech AVR 000)MLF 32
3. 面向新手的AVR 开发工具,及基本知识.PDF(编号:Tech AVR 001)
4. 使用AVR 定时/计数器的PWM功能设计要点 .PDF
5. AVR指令集（版本：0856G–AVR–07/08）
6. AVR 微控制器汽车应用解决方案 . pdf
7. AVR 微控制器选型指南. pdf
8. ATMEL 爱特梅尔公司全线产品目录. pdf