Microchip Technology ATMEGA325A-MNR

Overview

The Atmel ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, this microcontroller achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Features

• High performance, low power Atmel® AVR® 8-Bit Microcontroller
• Advanced RISC architecture
– 130 powerful instructions – most single clock cycle execution
– 32 × 8 general purpose working registers
– Fully static operation
– Up to 16MIPS throughput at 16MHz (Atmel ATmega165PA/645P)
– Up to 20MIPS throughput at 20MHz (Atmel ATmega165A/325A/325PA/645A/3250A/3250PA/6450A/6450P)
– On-chip 2-cycle multiplier
• High endurance non-volatile memory segments
– In-system self-programmable flash program memory
• 16KBytes (ATmega165A/ATmega165PA)
• 32KBytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA)
• 64KBytes (ATmega645A/ATmega645P/ATmega6450A/ATmega6450P)
– EEPROM
• 512Bytes (ATmega165A/ATmega165PA)
• 1Kbytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA)
• 2Kbytes (ATmega645A/ATmega645P/ATmega6450A/ATmega6450P)
– Internal SRAM
• 1KBytes (ATmega165A/ATmega165PA)
• 2KBytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA)
• 4KBytes (ATmega645A/ATmega645P/ATmega6450A/ATmega6450P)
– 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 On-chip Boot Program
• True read-while-write operation
– Programming lock for software security
• Atmel QTouch® library support
– Capacitive touch buttons, sliders and wheels
– Atmel QTouch and QMatrix acquisition
– Up to 64 sense channels
• 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
– 64/100-lead TQFP, 64-pad QFN/MLF and 64-pad DRQFN
• Speed grade:
– ATmega 165A/165PA/645A/645P: 0 - 16MHz @ 1.8 - 5.5V
– ATmega325A/325PA/3250A/3250PA/6450A/6450P: 0 - 20MHz @ 1.8 - 5.5V
• Temperature range:
– -40°C to 85C industrial
• Ultra-low power consumption (picoPower® devices)
– Active mode:
• 1MHz, 1.8V: 215µA
• 32kHz, 1.8V: 8µA (including oscillator)
– Power-down mode: 0.1µA at 1.8V
– Power-save mode: 0.6µA at 1.8V (Including 32kHz RTC)