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The ATmega8A is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega8A achieves throughputs approaching 1 MIPS per MHz, allowing the system designer to optimize power consumption versus processing speed. ATmega8 has 16 KB programmable flash memory, static RAM of 1 KB and EEPROM of 512 Bytes. The endurance cycle of flash memory and EEPROM is 10,000 and 100,000, respectively.
Features
- 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 16 MIPS Throughput at 16 MHz
- On-chip 2-cycle Multiplier
- Peripheral Features
- Two 8-bit Timer/Counters with Separate Prescaler, one Compare Mode
- One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode
- Real Time Counter with Separate Oscillator
- Three PWM Channels
- 8-channel ADC in TQFP and QFN/MLF package
- Eight Channels 10-bit Accuracy
- 6-channel ADC in PDIP package
- Six Channels 10-bit Accuracy
- Byte-oriented Two-wire Serial Interface
- Programmable Serial USART
- Master/Slave SPI Serial Interface
- Programmable Watchdog Timer with Separate On-chip Oscillator
- On-chip Analog Comparator
- Special Microcontroller Features
- 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
- Flash:8 KBytes
- EEPROM:512 Bytes
- SRAM:1024 Bytes
- Max I/O Pins:23
- Frequency Max:16 MHz
- VCC:2.7-5.5
- 10-bit A/D Channels:6
- Analog Comparator:Yes
- 16-bit Timers:1
- 8-bit Timer:2
- Brown Out Detector:Yes
- Ext Interrupts:2
- Hardware Multiplier:Yes
- Interrupts:18
- ISP:Yes
- On Chip Oscillator:Yes
- PWM Channels:3
- RTC:Yes
- Self Program Memory:Yes
- SPI:1
- TWI:Yes
- UART:1
- Watchdog:Yes
- Package:Lead Free PDIP 28