ATMEGA8-8PU

The ATMEGA8-8PU is one member of the ATMEGA8 series.The ATmega8 is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega8 achieves throughputs approaching 1 MIPS per MHz, allowing the system designer to optimize power consumption versus processing speed.The application section is the section of the Flash that is used for storing the application code. The protection level for the application section can be selected by the application boot Lock Bits (Boot Lock Bits 0), see Table 78 on page 209. The application section can never store any Boot Loader code since the SPM instruction is disabled when executed from the application section.

Features of the ATMEGA8-8PU are:(1)130 powerful instructions most single-clock cycle execution; (2)32 x 8 general purpose working registers; (3)fully static operation; (4)up to 16 MIPS throughput at 16 MHz; (5)on-chip 2-cycle multiplier; (6)byte-oriented two-wire serial interface; (7)programmable serial USART; (8)master/slave SPI serial interface; (9)programmable watchdog timer with separate on-chip oscillator; (10)on-chip analog comparator; (11)power-on reset and programmable brown-out detection; (12)internal calibrated RC oscillator; (13)external and internal interrupt sources; (14)five sleep modes: idle, ADC noise reduction, power-save,power-down, and standby.

The absolute maximum ratings of the ATMEGA8-8PU can be summarized as:(1)maximum operating voltage:6.0V;(2)operating temperature:-55 to 125;(3)storage temperature:-65 to 150;(4)DC current per I/O Pin:40.0mA;(5)DC current Vcc and GND pins:200.0 mA.Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or other conditions beyond those indicated in the operational sections of this specification is not implied.Exposure to absolute maximum rating conditions for extended periods may affect device reliability.The Boot Loader Support provides a real Read-While-Write Self-Programming mechanism for downloading and uploading program code by the MCU itself. This feature allows flexible application software updates controlled by the MCU using a Flash-resident Boot Loader program. The Boot Loader program can use any available data interface and associated protocol to read code and write (program) that code into the Flash memory, or read the code from the Program memory.