ATMEGA325A-AU

The ATMEGA325A-AU is a high-performance, low-power 8-bit AVR RISC-based Microcontroller combines 32kB ISP flash memory with read-while-write capabilities, 1kB EEPROM, 2kB SRAM, 54/69 general purpose I/O lines, 32 general purpose working registers, a JTAG interface for boundary-scan and on-chip debugging/programming, three flexible timers/counters with compare modes, internal and external interrupts, serial programmable USART, an universal serial interface (USI) with start condition detector, an 8-channel 10-bit A/D converter, programmable watchdog timer with internal oscillator, SPI serial port and five software selectable power saving modes. The device operates between 1.8 to 5.5V. By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1MIPS per MHz, balancing power consumption and processing speed. The device is manufactured using high density non-volatile memory technology.

• Advanced RISC architecture
• Power-on reset and programmable brown-out detection
• Internal calibrated RC oscillator
• External and internal interrupt sources
• Five sleep modes - idle, ADC noise reduction, power-save, power-down and standby
• 130 powerful instructions-most single clock cycle execution
• 32 x 8 general purpose working registers
• Fully static operation
• Up to 20MIPS throughput at 20MHz
• On-chip 2-cycle multiplier
• QTouch® library support
• JTAG (IEEE std. 1149.1 compliant) interface
• Programmable watchdog timer with separate on-chip oscillator
• On-chip analogue comparator
• Interrupt and wake-up on pin change
• Programmable serial USART
• Serial peripheral interface (SPI)
• Universal serial interface with start condition detector
• Four PWM channels
• Real-time counter with separate oscillator