ATMEGA808-AU

The ATmega808/809/1608/1609 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.

Key features

• Single-cycle I/O access
• Two-level interrupt controller
• Two-cycle hardware multiplier
• Memories:
• 8 or 16 KB In-system self-programmable Flash memory
• 256B EEPROM
• 2 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.