the high byte
Q: In order to achieve single-cycle instruction operation if the external clock frequency?
A MCU is not the real clock is used or not used clock frequency multiplier circuit
Q: AVR instruction cycle using a number of clock cycles?
A. There is only one clock cycle such as adding two numbers in the register is equal to the total execution time of the clock signal on XTAL1 pin is the negative half of the week plus a half weeks
Q: Why AT90S8515 8K, said the MCU?
A majority of CISC microcontroller instructions are variable length instructions by a single byte of some other instructions can also be composed of four bytes is the length of most of the AVR instruction is two bytes in length is four bytes so only a few CPU can not run at startup time just to read and interpret a byte code size benchmarks that we always compare the result and bytes on the 80C51 8K fill a C program certainly fit the AVR 8K
Q: Where can I find the data book?
A. You can selectively from the website you can download them from local distributors and ATMEL office data book you can get e-mail request to
Q: AVR MCU which add more than my current performance?
A very compact code, especially for C programs 4-10 times the speed programmable FLASH memory can be programmed in the system, embedded EEPROM memory chip can be programmed in the system with low power consumption
