MICROCHIP ATMEGA3208-AU

The ATmega3208/3209 microcontrollers are part of the megaAVR 0-series, which uses the AVR processor with hardware multiplier running at up to 20 MHz, and offers a wide range of Flash sizes up to 48 KB, up to 6 KB of SRAM, and 256 bytes of EEPROM in 28-, 32-, 40-, or 48-pin packages. The series uses the latest technologies from Microchip with a flexible and low-power architecture, including Event System and SleepWalking, accurate analog features, and advanced peripherals.

• AVR CPU: Single-cycle I/O access
• Two-level interrupt controller
• Two-cycle hardware multiplier
• Memories:
  • 32 KB In-system self-programmable Flash memory
  • 256B EEPROM
  • 6 KB SRAM
• Write/Erase endurance:
  • Flash 10,000 cycles
  • EEPROM 100,000 cycles
• Data retention: 40 years at 55℃
• 16/20 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 Debug Interface (UPDI)
• Three sleep modes:
  • Idle with all peripherals running for immediate wake-up
  • Standby – Configurable operation of selected peripherals
  • SleepWalking peripherals
  • Power-Down with limited wake-up functionality
• Peripherals:
  • One 16-bit Timer/Counter type A (TCA) with a dedicated period register and three compare channels
  • Up to four 16-bit Timer/Counters type B (TCB) with input capture
  • One 16-bit Real-Time Counter (RTC) running from an external crystal or an internal RC oscillator
  • Up to four USARTs with fractional baud rate generator, auto-baud, and start-of-frame detection
  • Host/client Serial Peripheral Interface (SPI)
  • Host/client TWI with dual address match
    • Can operate simultaneously as host and client
    • Standard mode (Sm, 100 kHz)
    • Fast mode (Fm, 400 kHz)
    • Fast mode plus (Fm+, 1 MHz)
  • Event System for core independent and predictable inter-peripheral signaling
  • Configurable Custom Logic (CCL) with up to four programmable Look-up Tables (LUT)
  • One Analog Comparator (AC) with a scalable reference input
  • One 10-bit 150 ksps Analog-to-Digital Converter (ADC)
  • Five selectable internal voltage references: 0.55V, 1.1V, 1.5V, 2.5V, and 4.3V
  • CRC code memory scan hardware
    • Optional automatic CRC scan before code execution is allowed
  • 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 41 programmable I/O lines
  • 28-pin SSOP
  • 32-pin VQFN 5x5 and TQFP 7x7
  • 48-pin VQFN 6x6 and TQFP 7x7
• Temperature Ranges:
  • Industrial: -40℃ to +85℃
  • Extended: -40℃ to +125℃
• Speed Grades -40℃ to +105℃:
  • 0.5 MHz @ 1.8V - 5.5V
  • 0 - 10 MHz @ 2.7V – 5.5V
  • 0.20 MHz @ 4.5V - 5.5V
• Speed Grades +105℃ to +125℃:
  • 0 - 8 MHz @ 2.7V - 5.5V
  • 0.16 MHz @ 4.5V - 5.5V
• Speed Grades -40℃ to +125℃ - Automotive Range Parts (-VAO):
  • 0.8 MHz @ 2.7V - 5.5V
  • 0.16 MHz @ 4.5V - 5.5V
• VAO variants available: Designed, manufactured, tested, and qualified per the AEC-Q100 requirements for automotive applications.