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In case you're wondering WHY CKDIV8 is set from the factory, it's so that the clock will be low enough for the part to work (and be programmed) at any legal Vcc ...

2011/12/20 -The CKDIV8 Fuse divides the clock for the whole! Controller. The internal Clock source generates a frequency of 8MHz. When the CKDIV8 Fuse ist ...

2020/10/29 -Hi, I have been experiencing issues with a simple arduino sketch on PIO where my chip is running 8 times slower than expected even after I ...

2013/7/17 -I use atmega168a and configure fuse on Tools > device programming > AVR dragon > fuses > (click on) CKDIV8 to set it to 8 MHz internal clock.

2017/4/10 -CKDIV8 Fuse Bit of the ATmega328-PU chip of ArduinoUNO is unprogrammed. It means that: (a) System Clock (clkSYS) is equal fosc;

2016/6/18 -The CKDIV8 Fuse determines the initial value of the CLKPS bits. If CKDIV8 is unprogrammed, the CLKPS bits will be reset to “0000”. If CKDIV8 ...

2019/12/23 -The fuse bit in Atmel Studio LOW.CKDIV8 is programmed in order to divide the internal frequency by 8. If programmed, LOW.CKDIV8=0, so if it ...

2009/2/14 -I succeeded in flashing my Attyny45 with AVRDude. Now I am trying to disable the internal Fuse "CKDIV8" that divide the internal clock speed by ...

2021/8/29 -Hi all, My ATmega32U4 adventure continues... Everything was working fine until I tried to set the CKDIV8 bit in LFUSE to 1.

The CKDIV8 Fuse determines the initial value of the CLKPS bits. If CKDIV8 is unprogrammed, the CLKPS bits will be reset to “0000”. If CKDIV8 is programmed ...